{"pageNumber":"190","pageRowStart":"4725","pageSize":"25","recordCount":16460,"records":[{"id":70033807,"text":"70033807 - 2011 - Removal of inorganic mercury and methylmercury from surface waters following coagulation of dissolved organic matter with metal-based salts","interactions":[],"lastModifiedDate":"2020-01-28T17:01:12","indexId":"70033807","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3352,"text":"Science of the Total Environment","active":true,"publicationSubtype":{"id":10}},"title":"Removal of inorganic mercury and methylmercury from surface waters following coagulation of dissolved organic matter with metal-based salts","docAbstract":"The presence of inorganic mercury (IHg) and methylmercury (MeHg) in surface waters is a health concern worldwide. This study assessed the removal potential use of metal-based coagulants as a means to remove both dissolved IHg and MeHg from natural waters and provides information regarding the importance of Hg associations with the dissolved organic matter (DOM) fraction and metal hydroxides. Previous research indicated coagulants were not effective at removing Hg from solution; however these studies used high concentrations of Hg and did not reflect naturally occurring concentrations of Hg. In this study, water collected from an agricultural drain in the Sacramento-San Joaquin Delta was filtered to isolate the dissolved organic matter (DOM) fraction. The DOM was then treated with a range of coagulant doses to determine the efficacy of removing all forms of Hg from solution. Three industrial-grade coagulants were tested: ferric chloride, ferric sulfate, and polyaluminum chloride. Coagulation removed up to 85% of DOM from solution. In the absence of DOM, all three coagulants released IHg into solution, however in the presence of DOM the coagulants removed up to 97% of IHg and 80% of MeHg. Results suggest that the removal of Hg is mediated by DOM-coagulant interactions. There was a preferential association of IHg with the more aromatic, higher molecular weight fraction of DOM but no such relationship was found for MeHg. This study offers new fundamental insights regarding large-scale removal of Hg at environmentally relevant regarding large-scale removal of Hg at environmentally relevant concentrations.","language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2010.10.030","issn":"00489697","usgsCitation":"Henneberry, Y., Kraus, T., Fleck, J., Krabbenhoft, D.P., Bachand, P., and Horwath, W., 2011, Removal of inorganic mercury and methylmercury from surface waters following coagulation of dissolved organic matter with metal-based salts: Science of the Total Environment, v. 409, no. 3, p. 631-637, https://doi.org/10.1016/j.scitotenv.2010.10.030.","productDescription":"7 p.","startPage":"631","endPage":"637","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":242100,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"409","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aa72ce4b0c8380cd8527f","contributors":{"authors":[{"text":"Henneberry, Y.K.","contributorId":71402,"corporation":false,"usgs":true,"family":"Henneberry","given":"Y.K.","affiliations":[],"preferred":false,"id":442596,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kraus, T.E.C. 0000-0002-5187-8644","orcid":"https://orcid.org/0000-0002-5187-8644","contributorId":9758,"corporation":false,"usgs":true,"family":"Kraus","given":"T.E.C.","affiliations":[],"preferred":false,"id":442592,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fleck, J.A. 0000-0002-3217-3972","orcid":"https://orcid.org/0000-0002-3217-3972","contributorId":35864,"corporation":false,"usgs":true,"family":"Fleck","given":"J.A.","affiliations":[],"preferred":false,"id":442594,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Krabbenhoft, David P. 0000-0003-1964-5020 dpkrabbe@usgs.gov","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":1658,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"David","email":"dpkrabbe@usgs.gov","middleInitial":"P.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true},{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":442597,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bachand, P.M.","contributorId":54805,"corporation":false,"usgs":true,"family":"Bachand","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":442595,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Horwath, W.R.","contributorId":14652,"corporation":false,"usgs":true,"family":"Horwath","given":"W.R.","affiliations":[],"preferred":false,"id":442593,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70033791,"text":"70033791 - 2011 - Trends in pesticide concentrations in streams of the western United States, 1993-2005","interactions":[],"lastModifiedDate":"2018-10-17T09:53:28","indexId":"70033791","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Trends in pesticide concentrations in streams of the western United States, 1993-2005","docAbstract":"<p><span>Trends in pesticide concentrations for 15 streams in California, Oregon, Washington, and Idaho were determined for the organophosphate insecticides chlorpyrifos and diazinon and the herbicides atrazine, s‐ethyl diproplythiocarbamate (EPTC), metolachlor, simazine, and trifluralin. A parametric regression model was used to account for flow, seasonality, and antecedent hydrologic conditions and thereby estimate trends in pesticide concentrations in streams arising from changes in use amount and application method in their associated catchments. Decreasing trends most often were observed for diazinon, and reflect the shift to alternative pesticides by farmers, commercial applicators, and homeowners because of use restrictions and product cancelation. Consistent trends were observed for several herbicides, including upward trends in simazine at urban‐influenced sites from 2000 to 2005, and downward trends in atrazine and EPTC at agricultural sites from the mid‐1990s to 2005. The model provided additional information about pesticide occurrence and transport in the modeled streams. Two examples are presented and briefly discussed: (1) timing of peak concentrations for individual compounds varied greatly across this geographic gradient because of different application periods and the effects of local rain patterns, irrigation, and soil drainage and (2) reconstructions of continuous diazinon concentrations at sites in California are used to evaluate compliance with total maximum daily load targets.</span></p>","language":"English","publisher":"American Water Resources Association","doi":"10.1111/j.1752-1688.2010.00507.x","issn":"1093474X","usgsCitation":"Johnson, H.M., Domagalski, J.L., and Saleh, D., 2011, Trends in pesticide concentrations in streams of the western United States, 1993-2005: Journal of the American Water Resources Association, v. 47, no. 2, p. 265-286, https://doi.org/10.1111/j.1752-1688.2010.00507.x.","productDescription":"22 p.","startPage":"265","endPage":"286","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":487145,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1752-1688.2010.00507.x","text":"Publisher Index Page"},{"id":241839,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":214145,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2010.00507.x"}],"country":"United States","volume":"47","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-12-06","publicationStatus":"PW","scienceBaseUri":"505bb7d9e4b08c986b32750d","contributors":{"authors":[{"text":"Johnson, Henry M. 0000-0002-7571-4994 hjohnson@usgs.gov","orcid":"https://orcid.org/0000-0002-7571-4994","contributorId":869,"corporation":false,"usgs":true,"family":"Johnson","given":"Henry","email":"hjohnson@usgs.gov","middleInitial":"M.","affiliations":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"preferred":true,"id":442494,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Domagalski, Joseph L. 0000-0002-6032-757X joed@usgs.gov","orcid":"https://orcid.org/0000-0002-6032-757X","contributorId":1330,"corporation":false,"usgs":true,"family":"Domagalski","given":"Joseph","email":"joed@usgs.gov","middleInitial":"L.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":442493,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Saleh, Dina 0000-0002-1406-9303 dsaleh@usgs.gov","orcid":"https://orcid.org/0000-0002-1406-9303","contributorId":939,"corporation":false,"usgs":true,"family":"Saleh","given":"Dina","email":"dsaleh@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":442495,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032682,"text":"70032682 - 2011 - The importance of warm season warming to western U.S. streamflow changes","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032682","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"The importance of warm season warming to western U.S. streamflow changes","docAbstract":"Warm season climate warming will be a key driver of annual streamflow changes in four major river basins of the western U.S., as shown by hydrological model simulations using fixed precipitation and idealized seasonal temperature changes based on climate projections with SRES A2 forcing. Warm season (April-September) warming reduces streamflow throughout the year; streamflow declines both immediately and in the subsequent cool season. Cool season (October-March) warming, by contrast, increases streamflow immediately, partially compensating for streamflow reductions during the subsequent warm season. A uniform warm season warming of 3C drives a wide range of annual flow declines across the basins: 13.3%, 7.2%, 1.8%, and 3.6% in the Colorado, Columbia, Northern and Southern Sierra basins, respectively. The same warming applied during the cool season gives annual declines of only 3.5%, 1.7%, 2.1%, and 3.1%, respectively. Copyright 2011 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2011GL049660","issn":"00948276","usgsCitation":"Das, T., Pierce, D., Cayan, D., Vano, J., and Lettenmaier, D., 2011, The importance of warm season warming to western U.S. streamflow changes: Geophysical Research Letters, v. 38, no. 23, https://doi.org/10.1029/2011GL049660.","costCenters":[],"links":[{"id":475219,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2011gl049660","text":"Publisher Index Page"},{"id":213671,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2011GL049660"},{"id":241322,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"38","issue":"23","noUsgsAuthors":false,"publicationDate":"2011-12-15","publicationStatus":"PW","scienceBaseUri":"505bad02e4b08c986b3238f6","contributors":{"authors":[{"text":"Das, T.","contributorId":99383,"corporation":false,"usgs":true,"family":"Das","given":"T.","email":"","affiliations":[],"preferred":false,"id":437431,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pierce, D.W.","contributorId":23342,"corporation":false,"usgs":true,"family":"Pierce","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":437427,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cayan, D.R.","contributorId":25961,"corporation":false,"usgs":false,"family":"Cayan","given":"D.R.","email":"","affiliations":[{"id":16196,"text":"Scripps Institution of Oceanography, La Jolla, CA","active":true,"usgs":false}],"preferred":false,"id":437428,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Vano, J.A.","contributorId":73018,"corporation":false,"usgs":true,"family":"Vano","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":437430,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lettenmaier, D.P.","contributorId":61175,"corporation":false,"usgs":true,"family":"Lettenmaier","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":437429,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70032681,"text":"70032681 - 2011 - Hydrologic response of catchments to precipitation: Quantification of mechanical carriers and origins of water","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032681","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Hydrologic response of catchments to precipitation: Quantification of mechanical carriers and origins of water","docAbstract":"Precipitation-induced overland and groundwater flow and mixing processes are quantified to analyze the temporal (event and pre-event water) and spatial (groundwater discharge and overland runoff) origins of water entering a stream. Using a distributed-parameter control volume finite-element simulator that can simultaneously solve the fully coupled partial differential equations describing 2-D Manning and 3-D Darcian flow and advective-dispersive transport, mechanical flow (driven by hydraulic potential) and tracer-based hydrograph separation (driven by dispersive mixing as well as mechanical flow) are simulated in response to precipitation events in two cross sections oriented parallel and perpendicular to a stream. The results indicate that as precipitation becomes more intense, the subsurface mechanical flow contributions tend to become less significant relative to the total pre-event stream discharge. Hydrodynamic mixing can play an important role in enhancing pre-event tracer signals in the stream. This implies that temporally tagged chemical signals introduced into surface-subsurface flow systems from precipitation may not be strong enough to detect the changes in the subsurface flow system. It is concluded that diffusive/dispersive mixing, capillary fringe groundwater ridging, and macropore flow can influence the temporal sources of water in the stream, but any sole mechanism may not fully explain the strong pre-event water discharge. Further investigations of the influence of heterogeneity, residence time, geomorphology, and root zone processes are required to confirm the conclusions of this study. Copyright 2011 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water Resources Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2010WR010075","issn":"00431397","usgsCitation":"Park, Y., Sudicky, E., Brookfield, A., and Jones, J., 2011, Hydrologic response of catchments to precipitation: Quantification of mechanical carriers and origins of water: Water Resources Research, v. 47, no. 12, https://doi.org/10.1029/2010WR010075.","costCenters":[],"links":[{"id":475150,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2010wr010075","text":"Publisher Index Page"},{"id":213644,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010WR010075"},{"id":241291,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"47","issue":"12","noUsgsAuthors":false,"publicationDate":"2011-12-15","publicationStatus":"PW","scienceBaseUri":"505a3685e4b0c8380cd6079a","contributors":{"authors":[{"text":"Park, Y.-J.","contributorId":14645,"corporation":false,"usgs":true,"family":"Park","given":"Y.-J.","email":"","affiliations":[],"preferred":false,"id":437423,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sudicky, E.A.","contributorId":67237,"corporation":false,"usgs":true,"family":"Sudicky","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":437425,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brookfield, A.E.","contributorId":38784,"corporation":false,"usgs":true,"family":"Brookfield","given":"A.E.","affiliations":[],"preferred":false,"id":437424,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jones, J.P.","contributorId":101093,"corporation":false,"usgs":true,"family":"Jones","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":437426,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032674,"text":"70032674 - 2011 - NETPATH-WIN: an interactive user version of the mass-balance model, NETPATH","interactions":[],"lastModifiedDate":"2020-01-09T19:36:27","indexId":"70032674","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"NETPATH-WIN: an interactive user version of the mass-balance model, NETPATH","docAbstract":"NETPATH-WIN is an interactive user version of NETPATH, an inverse geochemical modeling code used to find mass-balance reaction models that are consistent with the observed chemical and isotopic composition of waters from aquatic systems. NETPATH-WIN was constructed to migrate NETPATH applications into the Microsoft WINDOWS® environment. The new version facilitates model utilization by eliminating difficulties in data preparation and results analysis of the DOS version of NETPATH, while preserving all of the capabilities of the original version. Through example applications, the note describes some of the features of NETPATH-WIN as applied to adjustment of radiocarbon data for geochemical reactions in groundwater systems.","language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6584.2010.00779.x","issn":"0017467X","usgsCitation":"El-Kadi, A., Plummer, N., and Aggarwal, P., 2011, NETPATH-WIN: an interactive user version of the mass-balance model, NETPATH: Ground Water, v. 49, no. 4, p. 593-599, https://doi.org/10.1111/j.1745-6584.2010.00779.x.","productDescription":"7 p.","startPage":"593","endPage":"599","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":241733,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-12-06","publicationStatus":"PW","scienceBaseUri":"505a6141e4b0c8380cd71895","contributors":{"authors":[{"text":"El-Kadi, A. I.","contributorId":103838,"corporation":false,"usgs":true,"family":"El-Kadi","given":"A. I.","affiliations":[],"preferred":false,"id":437397,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Plummer, Niel 0000-0002-4020-1013 nplummer@usgs.gov","orcid":"https://orcid.org/0000-0002-4020-1013","contributorId":190100,"corporation":false,"usgs":true,"family":"Plummer","given":"Niel","email":"nplummer@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":437396,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Aggarwal, P.","contributorId":14650,"corporation":false,"usgs":true,"family":"Aggarwal","given":"P.","affiliations":[],"preferred":false,"id":437395,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032642,"text":"70032642 - 2011 - Soil-geomorphic significance of land surface characteristics in an arid mountain range, Mojave Desert, USA","interactions":[],"lastModifiedDate":"2019-07-17T16:28:19","indexId":"70032642","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1198,"text":"Catena","active":true,"publicationSubtype":{"id":10}},"title":"Soil-geomorphic significance of land surface characteristics in an arid mountain range, Mojave Desert, USA","docAbstract":"Mountains comprise an extensive and visually prominent portion of the landscape in the Mojave Desert, California. Landform surface properties influence the role these mountains have in geomorphic processes such as dust flux and surface hydrology across the region. The primary goal of this study was to describe and quantify land surface properties of arid-mountain landforms as a step toward unraveling the role these properties have in soil-geomorphic processes. As part of a larger soil-geomorphic study, four major landform types were identified within the southern Fry Mountains in the southwestern Mojave Desert on the basis of topography and landscape position: mountaintop, mountainflank, mountainflat (intra-range low-relief surface), and mountainbase. A suite of rock, vegetation, and morphometric land surface characteristic variables was measured at each of 65 locations across the study area, which included an associated piedmont and playa. Our findings show that despite the variation within types, landforms have distinct land surface properties that likely control soil-geomorphic processes. We hypothesize that surface expression influences a feedback process at this site where water transports sediment to low lying areas on the landscape and wind carries dust and soluble salts to the mountains where they are washed between rocks, incorporated into the soil, and retained as relatively long-term storage. Recent land-based video and satellite photographs of the dust cloud emanating from the Sierra Cucapá Mountains in response to the 7.2-magnitude earthquake near Mexicali, Mexico, support the hypothesis that these landforms are massive repositories of dust.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Catena","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/j.catena.2011.07.011","issn":"03418162","usgsCitation":"Hirmas, D., Graham, R., and Kendrick, K., 2011, Soil-geomorphic significance of land surface characteristics in an arid mountain range, Mojave Desert, USA: Catena, v. 87, no. 3, p. 408-420, https://doi.org/10.1016/j.catena.2011.07.011.","productDescription":"13 p.","startPage":"408","endPage":"420","costCenters":[{"id":234,"text":"Earthquake Hazards Program","active":true,"usgs":true},{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":241258,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213613,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.catena.2011.07.011"}],"country":"United States","otherGeospatial":"Mojave Desert","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -117.98,34.16 ], [ -117.98,37.52 ], [ -114.73,37.52 ], [ -114.73,34.16 ], [ -117.98,34.16 ] ] ] } } ] }","volume":"87","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9226e4b08c986b319d29","contributors":{"authors":[{"text":"Hirmas, D.R.","contributorId":107509,"corporation":false,"usgs":true,"family":"Hirmas","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":437226,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Graham, R.C.","contributorId":33740,"corporation":false,"usgs":true,"family":"Graham","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":437224,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kendrick, K.J. 0000-0002-9839-6861","orcid":"https://orcid.org/0000-0002-9839-6861","contributorId":48595,"corporation":false,"usgs":true,"family":"Kendrick","given":"K.J.","affiliations":[],"preferred":false,"id":437225,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032575,"text":"70032575 - 2011 - Modeling hydrologic and geomorphic hazards across post-fire landscapes using a self-organizing map approach","interactions":[],"lastModifiedDate":"2017-05-23T13:37:23","indexId":"70032575","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1551,"text":"Environmental Modelling and Software","active":true,"publicationSubtype":{"id":10}},"title":"Modeling hydrologic and geomorphic hazards across post-fire landscapes using a self-organizing map approach","docAbstract":"<p>Few studies attempt to model the range of possible post-fire hydrologic and geomorphic hazards because of the sparseness of data and the coupled, nonlinear, spatial, and temporal relationships among landscape variables. In this study, a type of unsupervised artificial neural network, called a self-organized map (SOM), is trained using data from 540 burned basins in the western United States. The sparsely populated data set includes variables from independent numerical landscape categories (climate, land surface form, geologic texture, and post-fire condition), independent landscape classes (bedrock geology and state), and dependent initiation processes (runoff, landslide, and runoff and landslide combination) and responses (debris flows, floods, and no events). Pattern analysis of the SOM-based component planes is used to identify and interpret relations among the variables. Application of the Davies-Bouldin criteria following k-means clustering of the SOM neurons identified eight conceptual regional models for focusing future research and empirical model development. A split-sample validation on 60 independent basins (not included in the training) indicates that simultaneous predictions of initiation process and response types are at least 78% accurate. As climate shifts from wet to dry conditions, forecasts across the burned landscape reveal a decreasing trend in the total number of debris flow, flood, and runoff events with considerable variability among individual basins. These findings suggest the SOM may be useful in forecasting real-time post-fire hazards, and long-term post-recovery processes and effects of climate change scenarios.</p>","language":"English","publisher":"Elsevier Science","doi":"10.1016/j.envsoft.2011.07.001","issn":"13648152","usgsCitation":"Friedel, M.J., 2011, Modeling hydrologic and geomorphic hazards across post-fire landscapes using a self-organizing map approach: Environmental Modelling and Software, v. 26, no. 12, p. 1660-1674, https://doi.org/10.1016/j.envsoft.2011.07.001.","productDescription":"15 p.","startPage":"1660","endPage":"1674","costCenters":[],"links":[{"id":241760,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5c03e4b0c8380cd6f981","contributors":{"authors":[{"text":"Friedel, Michael J. 0000-0002-5060-3999 mfriedel@usgs.gov","orcid":"https://orcid.org/0000-0002-5060-3999","contributorId":595,"corporation":false,"usgs":true,"family":"Friedel","given":"Michael","email":"mfriedel@usgs.gov","middleInitial":"J.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":436890,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70032548,"text":"70032548 - 2011 - Self-potential investigations of a gravel bar in a restored river corridor","interactions":[],"lastModifiedDate":"2012-03-12T17:21:21","indexId":"70032548","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1928,"text":"Hydrology and Earth System Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Self-potential investigations of a gravel bar in a restored river corridor","docAbstract":"Self-potentials (SP) are sensitive to water fluxes and concentration gradients in both saturated and unsaturated geological media, but quantitative interpretations of SP field data may often be hindered by the superposition of different source contributions and time-varying electrode potentials. Self-potential mapping and close to two months of SP monitoring on a gravel bar were performed to investigate the origins of SP signals at a restored river section of the Thur River in northeastern Switzerland. The SP mapping and subsequent inversion of the data indicate that the SP sources are mainly located in the upper few meters in regions of soil cover rather than bare gravel. Wavelet analyses of the time-series indicate a strong, but non-linear influence of water table and water content variations, as well as rainfall intensity on the recorded SP signals. Modeling of the SP response with respect to an increase in the water table elevation and precipitation indicate that the distribution of soil properties in the vadose zone has a very strong influence. We conclude that the observed SP responses on the gravel bar are more complicated than previously proposed semi-empiric relationships between SP signals and hydraulic head or the thickness of the vadose zone. We suggest that future SP monitoring in restored river corridors should either focus on quantifying vadose zone processes by installing vertical profiles of closely spaced SP electrodes or by installing the electrodes within the river to avoid signals arising from vadose zone processes and time-varying electrochemical conditions in the vicinity of the electrodes. ?? 2011 Author(s).","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrology and Earth System Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.5194/hess-15-729-2011","issn":"10275606","usgsCitation":"Linde, N., Doetsch, J., Jougnot, D., Genoni, O., Durst, Y., Minsley, B., Vogt, T., Pasquale, N., and Luster, J., 2011, Self-potential investigations of a gravel bar in a restored river corridor: Hydrology and Earth System Sciences, v. 15, no. 3, p. 729-742, https://doi.org/10.5194/hess-15-729-2011.","startPage":"729","endPage":"742","numberOfPages":"14","costCenters":[],"links":[{"id":475085,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5194/hess-15-729-2011","text":"Publisher Index Page"},{"id":241348,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213695,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.5194/hess-15-729-2011"}],"volume":"15","issue":"3","noUsgsAuthors":false,"publicationDate":"2011-03-04","publicationStatus":"PW","scienceBaseUri":"505b8d02e4b08c986b31821d","contributors":{"authors":[{"text":"Linde, N.","contributorId":37545,"corporation":false,"usgs":true,"family":"Linde","given":"N.","email":"","affiliations":[],"preferred":false,"id":436761,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Doetsch, J.","contributorId":35131,"corporation":false,"usgs":true,"family":"Doetsch","given":"J.","email":"","affiliations":[],"preferred":false,"id":436760,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jougnot, D.","contributorId":102697,"corporation":false,"usgs":true,"family":"Jougnot","given":"D.","email":"","affiliations":[],"preferred":false,"id":436766,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Genoni, O.","contributorId":7918,"corporation":false,"usgs":true,"family":"Genoni","given":"O.","email":"","affiliations":[],"preferred":false,"id":436758,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Durst, Y.","contributorId":20989,"corporation":false,"usgs":true,"family":"Durst","given":"Y.","email":"","affiliations":[],"preferred":false,"id":436759,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Minsley, B. J.","contributorId":52107,"corporation":false,"usgs":true,"family":"Minsley","given":"B. J.","affiliations":[],"preferred":false,"id":436764,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Vogt, T.","contributorId":66925,"corporation":false,"usgs":true,"family":"Vogt","given":"T.","email":"","affiliations":[],"preferred":false,"id":436765,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Pasquale, N.","contributorId":43991,"corporation":false,"usgs":true,"family":"Pasquale","given":"N.","email":"","affiliations":[],"preferred":false,"id":436762,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Luster, J.","contributorId":51101,"corporation":false,"usgs":true,"family":"Luster","given":"J.","email":"","affiliations":[],"preferred":false,"id":436763,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70032546,"text":"70032546 - 2011 - Nest success of snowy plovers (Charadrius nivosus) in the Southern high plains of Texas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:21","indexId":"70032546","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3731,"text":"Waterbirds","onlineIssn":"19385390","printIssn":"15244695","active":true,"publicationSubtype":{"id":10}},"title":"Nest success of snowy plovers (Charadrius nivosus) in the Southern high plains of Texas","docAbstract":"Snowy Plovers (Charadrius nivosus) nesting on edges of saline lakes within the Southern High Plains (SHP) of Texas are threatened by habitat degradation due to reduced artesian spring flow, making many saline lakes unsuitable for nesting and migrating shorebirds. Factors influencing nest success were evaluated, current nest success estimates in the SHP of Texas were compared to estimates obtained ten years prior, and causes and timing of nest failures determined. Overall, 215 nests were monitored from three saline lakes in 20082009, with nest success estimates from Program MARK ranging from 7-33% ( x??= 22%). The leading causes of nest failures were attributed to predation (40%) and weather (36%). Nest success was negatively influenced by number of plants within 707-cm  2 plot, positively influenced by percent surface water availability, and at one saline lake, negatively influenced by day during the nesting season (i.e., nest success declined later in the nesting season). When compared to estimates ten years prior (19981999), mean nest success has declined by 31%. If nesting Snowy Plovers continue to experience increased predation rates, decreased hydrological integrity, and habitat alterations, populations will continue to decline throughout this region.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Waterbirds","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1675/063.034.0401","issn":"15244695","usgsCitation":"Saalfeld, S., Conway, W.C., Haukos, D., and Johnson, W., 2011, Nest success of snowy plovers (Charadrius nivosus) in the Southern high plains of Texas: Waterbirds, v. 34, no. 4, p. 389-399, https://doi.org/10.1675/063.034.0401.","startPage":"389","endPage":"399","numberOfPages":"11","costCenters":[],"links":[{"id":213666,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1675/063.034.0401"},{"id":241315,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6489e4b0c8380cd729fe","contributors":{"authors":[{"text":"Saalfeld, S.T.","contributorId":107108,"corporation":false,"usgs":true,"family":"Saalfeld","given":"S.T.","email":"","affiliations":[],"preferred":false,"id":436753,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Conway, Warren C.","contributorId":51550,"corporation":false,"usgs":true,"family":"Conway","given":"Warren","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":436752,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haukos, D.A.","contributorId":17188,"corporation":false,"usgs":true,"family":"Haukos","given":"D.A.","affiliations":[],"preferred":false,"id":436750,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johnson, W.P.","contributorId":43315,"corporation":false,"usgs":true,"family":"Johnson","given":"W.P.","email":"","affiliations":[],"preferred":false,"id":436751,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032544,"text":"70032544 - 2011 - New insights from well responses to fluctuations in barometric pressure","interactions":[],"lastModifiedDate":"2012-03-12T17:21:21","indexId":"70032544","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"New insights from well responses to fluctuations in barometric pressure","docAbstract":"Hydrologists have long recognized that changes in barometric pressure can produce changes in water levels in wells. The barometric response function (BRF) has proven to be an effective means to characterize this relationship; we show here how it can also be utilized to glean valuable insights into semi-confined aquifer systems. The form of the BRF indicates the degree of aquifer confinement, while a comparison of BRFs between wells sheds light on hydrostratigraphic continuity. A new approach for estimating hydraulic properties of aquitards from BRFs has been developed and verified. The BRF is not an invariant characteristic of a well; in unconfined or semi-confined aquifers, it can change with conditions in the vadose zone. Field data from a long-term research site demonstrate the hydrostratigraphic insights that can be gained from monitoring water levels and barometric pressure. Such insights should be of value for a wide range of practical applications. ?? 2010 The Author(s). Journal compilation ?? 2010 National Ground Water Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1745-6584.2010.00768.x","issn":"0017467X","usgsCitation":"Butler, J., Jin, W., Mohammed, G., and Reboulet, E., 2011, New insights from well responses to fluctuations in barometric pressure: Ground Water, v. 49, no. 4, p. 525-533, https://doi.org/10.1111/j.1745-6584.2010.00768.x.","startPage":"525","endPage":"533","numberOfPages":"9","costCenters":[],"links":[{"id":213637,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2010.00768.x"},{"id":241283,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-11-16","publicationStatus":"PW","scienceBaseUri":"505a65d8e4b0c8380cd72c62","contributors":{"authors":[{"text":"Butler, J.J.","contributorId":55605,"corporation":false,"usgs":true,"family":"Butler","given":"J.J.","affiliations":[],"preferred":false,"id":436744,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jin, W.","contributorId":27682,"corporation":false,"usgs":true,"family":"Jin","given":"W.","email":"","affiliations":[],"preferred":false,"id":436743,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mohammed, G.A.","contributorId":108321,"corporation":false,"usgs":true,"family":"Mohammed","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":436745,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reboulet, E.C.","contributorId":13047,"corporation":false,"usgs":true,"family":"Reboulet","given":"E.C.","email":"","affiliations":[],"preferred":false,"id":436742,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032485,"text":"70032485 - 2011 - An improved understanding of the Alaska coastal current: The application of a bivalve growth-temperature model to reconstruct freshwater-influenced paleoenvironments","interactions":[],"lastModifiedDate":"2012-03-12T17:21:22","indexId":"70032485","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3000,"text":"Palaios","active":true,"publicationSubtype":{"id":10}},"title":"An improved understanding of the Alaska coastal current: The application of a bivalve growth-temperature model to reconstruct freshwater-influenced paleoenvironments","docAbstract":"Shells of intertidal bivalve mollusks contain sub-seasonally to interannually resolved records of temperature and salinity variations in coastal settings. Such data are essential to understand changing land-sea interactions through time, specifically atmospheric (precipitation rate, glacial meltwater, river discharge) and oceanographic circulation patterns; however, independent temperature and salinity proxies are currently not available. We established a model for reconstructing daily water temperatures with an average standard error of ???1.3 ??C based on variations in the width of lunar daily growth increments of Saxidomus gigantea from southwestern Alaska, United States. Temperature explains 70% of the variability in shell growth. When used in conjunction with stable oxygen isotope data, this approach can also be used to identify changes in past seawater salinity. This study provides a better understanding of the hydrological changes related to the Alaska Coastal Current (ACC). In combination with ??18Oshell values, increment-derived temperatures were used to estimate salinity changes with an average error of 1.4 ?? 1.1 PSU. Our model was calibrated and tested with modern shells and then applied to archaeological specimens. As derived from the model, the time interval of 988-1447 cal yr BP was characterized by ???1-2 ??C colder and much drier (2-5 PSU) summers. During that time, the ACC was likely flowing much more slowly than at present. In contrast, between 599-1014 cal yr BP, the Aleutian low may have been stronger, which resulted in a 3 ??C temperature decrease during summers and 1-2 PSU fresher conditions than today; the ACC was probably flowing more quickly at that time. The shell growth-temperature model can be used to estimate seasonal to interannual salinity and temperature changes in freshwater-influenced environments through time. ?? 2011 SEPM (Society for Sedimentary Geology).","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaios","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2110/palo.2010.p10-151r","issn":"08831351","usgsCitation":"Hallmann, N., Schone, B., Irvine, G., Burchell, M., Cokelet, E., and Hilton, M., 2011, An improved understanding of the Alaska coastal current: The application of a bivalve growth-temperature model to reconstruct freshwater-influenced paleoenvironments: Palaios, v. 26, no. 6, p. 346-363, https://doi.org/10.2110/palo.2010.p10-151r.","startPage":"346","endPage":"363","numberOfPages":"18","costCenters":[],"links":[{"id":213818,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2110/palo.2010.p10-151r"},{"id":241478,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"26","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-06-17","publicationStatus":"PW","scienceBaseUri":"5059ea74e4b0c8380cd4888b","contributors":{"authors":[{"text":"Hallmann, N.","contributorId":25772,"corporation":false,"usgs":true,"family":"Hallmann","given":"N.","email":"","affiliations":[],"preferred":false,"id":436419,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schone, B.R.","contributorId":64900,"corporation":false,"usgs":true,"family":"Schone","given":"B.R.","email":"","affiliations":[],"preferred":false,"id":436421,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Irvine, G.V.","contributorId":97051,"corporation":false,"usgs":true,"family":"Irvine","given":"G.V.","email":"","affiliations":[],"preferred":false,"id":436423,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Burchell, M.","contributorId":68972,"corporation":false,"usgs":true,"family":"Burchell","given":"M.","email":"","affiliations":[],"preferred":false,"id":436422,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cokelet, E.D.","contributorId":48397,"corporation":false,"usgs":true,"family":"Cokelet","given":"E.D.","affiliations":[],"preferred":false,"id":436420,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hilton, M.R.","contributorId":20555,"corporation":false,"usgs":true,"family":"Hilton","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":436418,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70032484,"text":"70032484 - 2011 - Microtopography enhances nitrogen cycling and removal in created mitigation wetlands","interactions":[],"lastModifiedDate":"2012-03-12T17:21:22","indexId":"70032484","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1454,"text":"Ecological Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Microtopography enhances nitrogen cycling and removal in created mitigation wetlands","docAbstract":"Natural wetlands often have a heterogeneous soil surface topography, or microtopography (MT), that creates microsites of variable hydrology, vegetation, and soil biogeochemistry. Created mitigation wetlands are designed to mimic natural wetlands in structure and function, and recent mitigation projects have incorporated MT as one way to attain this goal. Microtopography may influence nitrogen (N) cycling in wetlands by providing adjacent areas of aerobic and anaerobic conditions and by increasing carbon storage, which together facilitate N cycling and removal. This study investigated three created wetlands in the Virginia Piedmont that incorporated disking-induced MT during construction. One site had paired disked and undisked plots, allowing an evaluation of the effects of this design feature on N flux rates. Microtopography was measured using conventional survey equipment along a 1-m circular transect and was described using two indices: tortuosity (T), describing soil surface roughness and relief, and limiting elevation difference (LD), describing soil surface relief. Ammonification, nitrification, and net N mineralization were determined with in situ incubation of modified ion-exchange resin cores and denitrification potential was determined using denitrification enzyme assay (DEA). Results demonstrated that disked plots had significantly greater LD than undisked plots one year after construction. Autogenic sources of MT (e.g. tussock-forming vegetation) in concert with variable hydrology and sedimentation maintained and in some cases enhanced MT in study wetlands. Tortuosity and LD values remained the same in one wetland when compared over a two-year period, suggesting a dynamic equilibrium of MT-forming and -eroding processes at play. Microtopography values also increased when comparing the original induced MT of a one-year old wetland with MT of older created wetlands (five and eight years old) with disking-induced MT, indicating that MT can increase by natural processes over time. When examined along a hydrologic gradient, LD increased with proximity to an overflow point as a result of differential sediment deposition and erosion during flood events. Nitrification increased with T and denitrification potential increased with LD, indicating that microtopographic heterogeneity enhances coupled N fluxes. The resulting N flux patterns may be explained by the increase in oxygen availability elicited by greater T (enhancing nitrification) and by the adjacent zones of aerobic and anaerobic conditions elicited by greater LD (enhancing coupled nitrification and denitrification potential). Findings of this study support the incorporation of MT into the design and regulatory evaluation of created wetlands in order to enhance N cycling and removal. ?? 2011.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.ecoleng.2011.03.013","issn":"09258574","usgsCitation":"Wolf, K., Ahn, C., and Noe, G., 2011, Microtopography enhances nitrogen cycling and removal in created mitigation wetlands: Ecological Engineering, v. 37, no. 9, p. 1398-1406, https://doi.org/10.1016/j.ecoleng.2011.03.013.","startPage":"1398","endPage":"1406","numberOfPages":"9","costCenters":[],"links":[{"id":213786,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.ecoleng.2011.03.013"},{"id":241444,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"37","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a56abe4b0c8380cd6d73a","contributors":{"authors":[{"text":"Wolf, K.L.","contributorId":37547,"corporation":false,"usgs":true,"family":"Wolf","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":436416,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ahn, C.","contributorId":22589,"corporation":false,"usgs":true,"family":"Ahn","given":"C.","email":"","affiliations":[],"preferred":false,"id":436415,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Noe, G.B.","contributorId":66464,"corporation":false,"usgs":true,"family":"Noe","given":"G.B.","email":"","affiliations":[],"preferred":false,"id":436417,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032419,"text":"70032419 - 2011 - Simulating the potential effects of climate change in two Colorado basins and at two Colorado ski areas","interactions":[],"lastModifiedDate":"2020-01-28T15:31:02","indexId":"70032419","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1421,"text":"Earth Interactions","active":true,"publicationSubtype":{"id":10}},"title":"Simulating the potential effects of climate change in two Colorado basins and at two Colorado ski areas","docAbstract":"<p>The mountainous areas of Colorado are used for tourism and recreation, and they provide water storage and supply for municipalities, industries, and agriculture. Recent studies suggest that water supply and tourist industries such as skiing are at risk from climate change. In this study, a distributed-parameter watershed model, the Precipitation-Runoff Modeling System (PRMS), is used to identify the potential effects of future climate on hydrologic conditions for two Colorado basins, the East River at Almont and the Yampa River at Steamboat Springs, and at the subbasin scale for two ski areas within those basins.</p><p>Climate-change input files for PRMS were generated by modifying daily PRMS precipitation and temperature inputs with mean monthly climate-change fields of precipitation and temperature derived from five general circulation model (GCM) simulations using one current and three future carbon emission scenarios. All GCM simulations of mean daily minimum and maximum air temperature for the East and Yampa River basins indicate a relatively steady increase of up to several degrees Celsius from baseline conditions by 2094. GCM simulations of precipitation in the two basins indicate little change or trend in precipitation, but there is a large range associated with these projections. PRMS projections of basin mean daily streamflow vary by scenario but indicate a central tendency toward slight decreases, with a large range associated with these projections.</p><p>Decreases in water content or changes in the spatial extent of snowpack in the East and Yampa River basins are important because of potential adverse effects on water supply and recreational activities. PRMS projections of each future scenario indicate a central tendency for decreases in basin mean snow-covered area and snowpack water equivalent, with the range in the projected decreases increasing with time. However, when examined on a monthly basis, the projected decreases are most dramatic during fall and spring. Presumably, ski area locations are picked because of a tendency to receive snow and keep snowpack relative to the surrounding area. This effect of ski area location within the basin was examined by comparing projections of March snow-covered area and snowpack water equivalent for the entire basin with more local projections for the portion of the basin that represents the ski area in the PRMS models. These projections indicate a steady decrease in March snow-covered area for the basins but only small changes in March snow-covered area at both ski areas for the three future scenarios until around 2050. After 2050, larger decreases are possible, but there is a large range in the projections of future scenarios. The rates of decrease for snowpack water equivalent and precipitation that falls as snow are similar at the basin and subbasin scale in both basins. Results from this modeling effort show that there is a wide range of possible outcomes for future snowpack conditions in Colorado. The results also highlight the differences between projections for entire basins and projections for local areas or subbasins within those basins.</p>","language":"English","publisher":"American Meteorological Society","doi":"10.1175/2011EI373.1","usgsCitation":"Battaglin, W., Hay, L.E., and Markstrom, S., 2011, Simulating the potential effects of climate change in two Colorado basins and at two Colorado ski areas: Earth Interactions, v. 15, no. 22, p. 1-23, https://doi.org/10.1175/2011EI373.1.","productDescription":"23 p.","startPage":"1","endPage":"23","costCenters":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":475226,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1175/2011ei373.1","text":"Publisher Index 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Steve","contributorId":23682,"corporation":false,"usgs":true,"family":"Markstrom","given":"Steve","affiliations":[],"preferred":false,"id":513951,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032330,"text":"70032330 - 2011 - Field tracer investigation of unsaturated zone flow paths and mechanisms in agricultural soils of northwestern Mississippi, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:25","indexId":"70032330","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Field tracer investigation of unsaturated zone flow paths and mechanisms in agricultural soils of northwestern Mississippi, USA","docAbstract":"In many farmed areas, intensive application of agricultural chemicals and withdrawal of groundwater for irrigation have led to water quality and supply issues. Unsaturated-zone processes, including preferential flow, play a major role in these effects but are not well understood. In the Bogue Phalia basin, an intensely agricultural area in the Delta region of northwestern Mississippi, the fine-textured soils often exhibit surface ponding and runoff after irrigation and rainfall as well as extensive surface cracking during prolonged dry periods. Fields are typically land-formed to promote surface flow into drainage ditches and streams that feed into larger river ecosystems. Downward flow of water below the root zone is considered minimal; regional groundwater models predict only 5% or less of precipitation recharges the heavily used alluvial aquifer. In this study transport mechanisms within and below the root zone of a fallow soybean field were assessed by performing a 2-m ring infiltration test with tracers and subsurface monitoring instruments. Seven months after tracer application, 48 continuous cores were collected for tracer extraction to define the extent of water movement and quantify preferential flow using a mass-balance approach. Vertical water movement was rapid below the pond indicating the importance of vertical preferential flow paths in the shallow unsaturated zone, especially to depths where agricultural disturbance occurs. Lateral flow of water at shallow depths was extensive and spatially non-uniform, reaching up to 10. m from the pond within 2. months. Within 1. month, the wetting front reached a textural boundary at 4-5. m between the fine-textured soil and sandy alluvium, now a potential capillary barrier which, prior to extensive irrigation withdrawals, was below the water table. Within 10. weeks, tracer was detectable at the water table which is presently about 12. m below land surface. Results indicate that 43% of percolation may be through preferential flow paths and that any water breaking through the capillary barrier (as potential recharge) likely does so in fingers which are difficult to detect with coring methods. In other areas where water levels have declined and soils have similar properties, the potential for transport of agricultural chemicals to the aquifer may be greater than previously assumed. ?? 2010 .","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2010.09.009","issn":"00221694","usgsCitation":"Perkins, K., Nimmo, J., Rose, C., and Coupe, R., 2011, Field tracer investigation of unsaturated zone flow paths and mechanisms in agricultural soils of northwestern Mississippi, USA: Journal of Hydrology, v. 396, no. 1-2, p. 1-11, https://doi.org/10.1016/j.jhydrol.2010.09.009.","startPage":"1","endPage":"11","numberOfPages":"11","costCenters":[],"links":[{"id":214951,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2010.09.009"},{"id":242712,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"396","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0fe3e4b0c8380cd53a64","contributors":{"authors":[{"text":"Perkins, K. S. 0000-0001-8349-447X","orcid":"https://orcid.org/0000-0001-8349-447X","contributorId":77557,"corporation":false,"usgs":true,"family":"Perkins","given":"K. S.","affiliations":[],"preferred":false,"id":435640,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nimmo, J. R. 0000-0001-8191-1727","orcid":"https://orcid.org/0000-0001-8191-1727","contributorId":58304,"corporation":false,"usgs":true,"family":"Nimmo","given":"J. R.","affiliations":[],"preferred":false,"id":435638,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rose, C.E.","contributorId":63233,"corporation":false,"usgs":true,"family":"Rose","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":435639,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Coupe, R.H.","contributorId":84778,"corporation":false,"usgs":true,"family":"Coupe","given":"R.H.","affiliations":[],"preferred":false,"id":435641,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032327,"text":"70032327 - 2011 - Spatial variation in transient water table responses: Differences between an upper and lower hillslope zone","interactions":[],"lastModifiedDate":"2012-03-12T17:21:25","indexId":"70032327","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Spatial variation in transient water table responses: Differences between an upper and lower hillslope zone","docAbstract":"To better understand storage-runoff dynamics, transient groundwater responses were examined in one of the steep watersheds in British Columbia's coastal mountains. Streamflow and piezometric data were collected for 1year to determine the spatial and temporal relations between transient groundwater levels and discharge. Correlations between piezometer responses and lag-time analysis were used to identify and better understand runoff generation mechanisms in this watershed. Results showed a large spatial and temporal variation in transient water table dynamics and indicated that two distinct zones existed: a lower hillslope zone and an upslope zone. Each zone was characterized by very different water table responses. The upper hillslope was disconnected from the stream for the majority of time, suggesting that during most events, it does not directly contribute to streamflow. Piezometers in the lower hillslope zone showed hydrologically limited responses, suggesting rapid subsurface flow, likely through the many macropores and soil pipes. The lag time between peak streamflow and peak groundwater level decreased with increasing antecedent moisture conditions and was more variable for piezometers further away from the stream than for piezometers close to the stream. The study results indicate that a single storage-runoff model is not appropriate for this steep watershed and that a two- or three-compartment model would be more suitable. ?? 2011 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/hyp.8354","issn":"08856087","usgsCitation":"Haught, D., and Van Meerveld, H., 2011, Spatial variation in transient water table responses: Differences between an upper and lower hillslope zone: Hydrological Processes, v. 25, no. 25, p. 3866-3877, https://doi.org/10.1002/hyp.8354.","startPage":"3866","endPage":"3877","numberOfPages":"12","costCenters":[],"links":[{"id":214890,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.8354"},{"id":242648,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"25","noUsgsAuthors":false,"publicationDate":"2011-11-14","publicationStatus":"PW","scienceBaseUri":"505b94bde4b08c986b31ac1b","contributors":{"authors":[{"text":"Haught, D.R.W.","contributorId":80100,"corporation":false,"usgs":true,"family":"Haught","given":"D.R.W.","email":"","affiliations":[],"preferred":false,"id":435629,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Van Meerveld, H. J.","contributorId":107954,"corporation":false,"usgs":true,"family":"Van Meerveld","given":"H. J.","affiliations":[],"preferred":false,"id":435630,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032325,"text":"70032325 - 2011 - The distribution and abundance of a nuisance native alga, Didymosphen Didymosphenia geminata, in streams of Glacier National Park: Climate drivers and management implications","interactions":[],"lastModifiedDate":"2012-03-12T17:21:25","indexId":"70032325","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3014,"text":"Park Science","active":true,"publicationSubtype":{"id":10}},"title":"The distribution and abundance of a nuisance native alga, Didymosphen Didymosphenia geminata, in streams of Glacier National Park: Climate drivers and management implications","docAbstract":"Didymosphenia geminata (didymo) is a freshwater alga native to North America, including Glacier National Park, Montana. It has long been considered a cold-water species, but has recently spread to lower latitudes and warmer waters, and increasingly forms large blooms that cover streambeds. We used a comprehensive monitoring data set from the National Park Service (NPS) and USGS models of stream temperatures to explore the drivers of didymo abundance in Glacier National Park. We estimate that approximately 64% of the stream length in the park contains didymo, with around 5% in a bloom state. Results suggest that didymo abundance likely increased over the study period (2007-2009), with blooms becoming more common. Our models suggest that didymo abundance is positively related to summer stream temperatures and negatively related to total nitrogen and the distance downstream from lakes. Regional climate model simulations indicate that stream temperatures in the park will likely continue to increase over the coming decades, which may increase the extent and severity of didymo blooms. As a result, didymo may be a useful indicator of thermal and hydrological modification associated with climate warming, especially in a relatively pristine system like Glacier where proximate human-related disturbances are absent or reduced. Glacier National Park plays an important role as a sentinel for climate change and associated education across the Rocky Mountain region.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Park Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"07359462","usgsCitation":"William, S.E., Ashton, I., Muhlfeld, C., Jones, L., and Bahls, L., 2011, The distribution and abundance of a nuisance native alga, Didymosphen Didymosphenia geminata, in streams of Glacier National Park: Climate drivers and management implications: Park Science, v. 28, no. 2.","costCenters":[],"links":[{"id":242646,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baacae4b08c986b3229f3","contributors":{"authors":[{"text":"William, Schweiger E.","contributorId":60463,"corporation":false,"usgs":true,"family":"William","given":"Schweiger","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":435618,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ashton, I.W.","contributorId":101900,"corporation":false,"usgs":true,"family":"Ashton","given":"I.W.","email":"","affiliations":[],"preferred":false,"id":435620,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Muhlfeld, C.C.","contributorId":97850,"corporation":false,"usgs":true,"family":"Muhlfeld","given":"C.C.","affiliations":[],"preferred":false,"id":435619,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jones, L.A.","contributorId":38794,"corporation":false,"usgs":true,"family":"Jones","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":435617,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bahls, L.L.","contributorId":36208,"corporation":false,"usgs":true,"family":"Bahls","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":435616,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70032299,"text":"70032299 - 2011 - Assessing the detail needed to capture rainfall-runoff dynamics with physics-based hydrologic response simulation","interactions":[],"lastModifiedDate":"2012-03-12T17:21:25","indexId":"70032299","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Assessing the detail needed to capture rainfall-runoff dynamics with physics-based hydrologic response simulation","docAbstract":"Concept development simulation with distributed, physics-based models provides a quantitative approach for investigating runoff generation processes across environmental conditions. Disparities within data sets employed to design and parameterize boundary value problems used in heuristic simulation inevitably introduce various levels of bias. The objective was to evaluate the impact of boundary value problem complexity on process representation for different runoff generation mechanisms. The comprehensive physics-based hydrologic response model InHM has been employed to generate base case simulations for four well-characterized catchments. The C3 and CB catchments are located within steep, forested environments dominated by subsurface stormflow; the TW and R5 catchments are located in gently sloping rangeland environments dominated by Dunne and Horton overland flows. Observational details are well captured within all four of the base case simulations, but the characterization of soil depth, permeability, rainfall intensity, and evapotranspiration differs for each. These differences are investigated through the conversion of each base case into a reduced case scenario, all sharing the same level of complexity. Evaluation of how individual boundary value problem characteristics impact simulated runoff generation processes is facilitated by quantitative analysis of integrated and distributed responses at high spatial and temporal resolution. Generally, the base case reduction causes moderate changes in discharge and runoff patterns, with the dominant process remaining unchanged. Moderate differences between the base and reduced cases highlight the importance of detailed field observations for parameterizing and evaluating physics-based models. Overall, similarities between the base and reduced cases indicate that the simpler boundary value problems may be useful for concept development simulation to investigate fundamental controls on the spectrum of runoff generation mechanisms. Copyright 2011 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Water Resources Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2010WR009906","issn":"00431397","usgsCitation":"Mirus, B., Ebel, B., Heppner, C., and Loague, K., 2011, Assessing the detail needed to capture rainfall-runoff dynamics with physics-based hydrologic response simulation: Water Resources Research, v. 47, no. 6, https://doi.org/10.1029/2010WR009906.","costCenters":[],"links":[{"id":475213,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2010wr009906","text":"Publisher Index Page"},{"id":215013,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2010WR009906"},{"id":242778,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"47","issue":"6","noUsgsAuthors":false,"publicationDate":"2011-06-11","publicationStatus":"PW","scienceBaseUri":"5059ede8e4b0c8380cd49ac0","contributors":{"authors":[{"text":"Mirus, B.B.","contributorId":68128,"corporation":false,"usgs":true,"family":"Mirus","given":"B.B.","affiliations":[],"preferred":false,"id":435500,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ebel, B.A.","contributorId":87772,"corporation":false,"usgs":true,"family":"Ebel","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":435502,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Heppner, C.S.","contributorId":37147,"corporation":false,"usgs":true,"family":"Heppner","given":"C.S.","affiliations":[],"preferred":false,"id":435499,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Loague, K.","contributorId":77307,"corporation":false,"usgs":true,"family":"Loague","given":"K.","affiliations":[],"preferred":false,"id":435501,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032296,"text":"70032296 - 2011 - Water storage at the Panola Mountain Research Watershed, Georgia, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:24","indexId":"70032296","displayToPublicDate":"2011-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"Water storage at the Panola Mountain Research Watershed, Georgia, USA","docAbstract":"Storage is a major component of a catchment water balance particularly when the water balance components are evaluated on short time scales, that is, less than annual. We propose a method of determining the storage-discharge relation using an exponential function and daily precipitation, potential evapotranspiration (PET) and baseflow during the dormant season when evapotranspiration (ET) is low. The method was applied to the 22-year data series of the 0.41-ha forested Panola Mountain Research Watershed, Georgia. The relation of cumulative daily precipitation minus daily runoff and PET versus baseflow was highly significant (r2=0.92, p&lt;0.0001), but the initial storage for each year varied markedly. For the 22-year study period, annual precipitation and runoff averaged 1240 and 380mm, respectively, whereas the absolute catchment storage range was ~400mm, averaging 219mm annually, which is attributed to contributions of soil water and groundwater. The soil moisture of a catchment average 1-m soil depth was evaluated and suggests that there was an active (changes in soil storage during stormflow) and passive (a longer-term seasonal cycle) soil water storage with ranges of 40-70 and 100-120mm, respectively. The active soil water storage was short term on the order of days during and immediately after rainstorms, and the passive or seasonal soil storage was highest during winter when ET was lowest and lowest during summer when ET was highest. An estimate of ET from daily changes in soil moisture (ETSM) during recessions was comparable with PET during the dormant season (1.5mmday-1) but was much lower during the growing season (June through August); monthly average SMET and PET ranged from 2.8 to 4.0mmday-1 and from 4.5 to 5.5mmday-1, respectively. The growing season difference is attributed to the overestimation of PET. ETSM estimates were comparable with those derived from hillslope water balances during sprinkling experiments. Master recession curves derived from the storage-discharge relation adjusted seasonally for ET (1.5 and 4.0mmday-1 during the dormant and growing seasons, respectively) fit actual recessions extremely well. ?? 2011 John Wiley &amp; Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/hyp.8334","issn":"08856087","usgsCitation":"Peters, N., and Aulenbach, B., 2011, Water storage at the Panola Mountain Research Watershed, Georgia, USA: Hydrological Processes, v. 25, no. 25, p. 3878-3889, https://doi.org/10.1002/hyp.8334.","startPage":"3878","endPage":"3889","numberOfPages":"12","costCenters":[],"links":[{"id":214950,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.8334"},{"id":242711,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"25","noUsgsAuthors":false,"publicationDate":"2011-11-15","publicationStatus":"PW","scienceBaseUri":"505bcc76e4b08c986b32db6a","contributors":{"authors":[{"text":"Peters, N.E.","contributorId":33332,"corporation":false,"usgs":true,"family":"Peters","given":"N.E.","email":"","affiliations":[],"preferred":false,"id":435490,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Aulenbach, Brent T.","contributorId":62766,"corporation":false,"usgs":true,"family":"Aulenbach","given":"Brent T.","affiliations":[],"preferred":false,"id":435491,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70036960,"text":"70036960 - 2011 - Using Cl/Br ratios and other indicators to assess potential impacts on groundwater quality from septic systems: A review and examples from principal aquifers in the United States","interactions":[],"lastModifiedDate":"2020-12-16T13:08:03.731019","indexId":"70036960","displayToPublicDate":"2010-12-05T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Using Cl/Br ratios and other indicators to assess potential impacts on groundwater quality from septic systems: A review and examples from principal aquifers in the United States","docAbstract":"<p id=\"sp005\">A detailed review was made of chemical indicators used to identify impacts from septic tanks on groundwater quality. Potential impacts from septic tank leachate on groundwater quality were assessed using the mass ratio of chloride–bromide (Cl/Br), concentrations of selected chemical constituents, and ancillary information (land use, census data, well depth, soil characteristics) for wells in principal aquifers of the United States. Chemical data were evaluated from 1848 domestic wells in 19 aquifers, 121 public-supply wells in 6 aquifers, and associated monitoring wells in four aquifers and their overlying hydrogeologic units. Based on previously reported Cl/Br ratios, statistical comparisons between targeted wells (where Cl/Br ratios range from 400 to 1100 and Cl concentrations range from 20 to 100&nbsp;mg/L) and non-targeted wells indicated that shallow targeted monitoring and domestic wells (&lt;20&nbsp;m depth below land surface) had a significantly (<i>p&nbsp;</i>&lt;&nbsp;0.05) higher median percentage of houses with septic tanks (1990 census data) than non-targeted wells. Higher (<i>p&nbsp;</i>=&nbsp;0.08) median nitrate–N concentration (3.1&nbsp;mg/L) in oxic (dissolved oxygen concentrations &gt;0.5&nbsp;mg/L) shallow groundwater from target domestic wells, relative to non-target wells (1.5&nbsp;mg/L), corresponded to significantly higher potassium, boron, chloride, dissolved organic carbon, and sulfate concentrations, which may also indicate the influence of septic-tank effluent. Impacts on groundwater quality from septic systems were most evident for the Eastern Glacial Deposits aquifer and the Northern High Plains aquifer that were associated with the number of housing units using septic tanks, high permeability of overlying sediments, mostly oxic conditions, and shallow wells. Overall, little or no influence from septic systems were found for water samples from the deeper public-supply wells.</p><p id=\"sp010\">The Cl/Br ratio is a useful first-level screening tool for assessing possible septic tank influence in water from shallow wells (&lt;20&nbsp;m) with the range of 400–1100. The use of this ratio would be enhanced with information on other chloride sources, temporal variability of chloride and bromide concentrations in shallow groundwater, knowledge of septic-system age and maintenance, and the use of multiple tracers (combination of additional chemical and microbiological indicators).</p>","language":"English","publisher":"Elsevier","doi":"10.1016/j.jhydrol.2010.11.017","issn":"00221694","usgsCitation":"Katz, B., Eberts, S.M., and Kauffman, L.J., 2011, Using Cl/Br ratios and other indicators to assess potential impacts on groundwater quality from septic systems: A review and examples from principal aquifers in the United States: Journal of Hydrology, v. 397, no. 3-4, p. 151-166, https://doi.org/10.1016/j.jhydrol.2010.11.017.","productDescription":"16 p.","startPage":"151","endPage":"166","numberOfPages":"16","costCenters":[],"links":[{"id":245867,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -128.32031249999997,\n              25.48295117535531\n            ],\n            [\n              -65.390625,\n              25.48295117535531\n            ],\n            [\n              -65.390625,\n              51.39920565355378\n            ],\n            [\n              -128.32031249999997,\n              51.39920565355378\n            ],\n            [\n              -128.32031249999997,\n              25.48295117535531\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"397","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc00de4b08c986b329ed0","contributors":{"authors":[{"text":"Katz, B. G.","contributorId":82702,"corporation":false,"usgs":true,"family":"Katz","given":"B. G.","affiliations":[],"preferred":false,"id":458684,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eberts, S. M.","contributorId":28276,"corporation":false,"usgs":true,"family":"Eberts","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":458682,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kauffman, L. J. 0000-0003-4564-0362","orcid":"https://orcid.org/0000-0003-4564-0362","contributorId":65217,"corporation":false,"usgs":true,"family":"Kauffman","given":"L.","email":"","middleInitial":"J.","affiliations":[{"id":470,"text":"New Jersey Water Science Center","active":true,"usgs":true}],"preferred":false,"id":458683,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70176896,"text":"70176896 - 2011 - Source identification of Florida Bay's methylmercury problem: Mainland runoff versus atmospheric deposition and <i>in situ</i> production","interactions":[],"lastModifiedDate":"2020-01-11T11:03:41","indexId":"70176896","displayToPublicDate":"2010-04-22T14:30:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Source identification of Florida Bay's methylmercury problem: Mainland runoff versus atmospheric deposition and <i>in situ</i> production","docAbstract":"<p><span>The first advisory to limit consumption of Florida Bay fish due to mercury was issued in 1995. Studies done by others in the late 1990s found elevated water column concentrations of both total Hg (THg) and methylmercury (MeHg) in creeks discharging from the Everglades, which had its own recognized mercury problem. To investigate the significance of allochthonous MeHg discharging from the upstream freshwater Everglades, we collected surface water and sediment along two transects from 2000 to 2002. Concentrations of THg and MeHg, ranging from 0.36&nbsp;ng THg/L to 5.98&nbsp;ng THg/L and from &lt;0.02&nbsp;ng MeHg/L to 1.79&nbsp;ng MeHg/L, were elevated in the mangrove transition zone when compared both to upstream canals and the open waters of Florida Bay. Sediment concentrations ranged from 5.8&nbsp;ng THg/g to 145.6&nbsp;ng THg/g and from 0.05&nbsp;ng MeHg/g to 5.4&nbsp;ng MeHg/g, with MeHg as a percentage of THg occasionally elevated in the open bay. Methylation assays indicated that sediments from Florida Bay have the potential to methylate Hg. Assessment of mass loading suggests that canals delivering stormwater from the northern Everglades are not as large a source as direct atmospheric deposition and&nbsp;</span><i class=\"EmphasisTypeItalic \">in situ</i><span>&nbsp;methylation, especially within the mangrove transition zone.</span></p>","language":"English","publisher":"Estuarine Research Federation","doi":"10.1007/s12237-010-9290-5","usgsCitation":"Rumbold, D.G., Evans, D.W., Niemczyk, S., Fink, L.E., Laine, K.A., Howard, N., Krabbenhoft, D.P., and Zucker, M., 2011, Source identification of Florida Bay's methylmercury problem: Mainland runoff versus atmospheric deposition and <i>in situ</i> production: Estuaries and Coasts, v. 34, no. 3, p. 494-513, https://doi.org/10.1007/s12237-010-9290-5.","productDescription":"20 p.","startPage":"494","endPage":"513","numberOfPages":"20","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-021473","costCenters":[{"id":381,"text":"Mercury Research Laboratory","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":329487,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Florida Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -81,\n              24.9\n            ],\n            [\n              -81,\n              25.6\n            ],\n            [\n              -80.1,\n              25.6\n            ],\n            [\n              -80.1,\n              24.9\n            ],\n            [\n              -81,\n              24.9\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"34","issue":"3","publishingServiceCenter":{"id":6,"text":"Columbus PSC"},"noUsgsAuthors":false,"publicationDate":"2010-04-22","publicationStatus":"PW","scienceBaseUri":"57fe8150e4b0824b2d1480ae","contributors":{"authors":[{"text":"Rumbold, Darren G.","contributorId":140777,"corporation":false,"usgs":false,"family":"Rumbold","given":"Darren","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":650643,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Evans, David W.","contributorId":175266,"corporation":false,"usgs":false,"family":"Evans","given":"David","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":650644,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Niemczyk, Sharon","contributorId":175269,"corporation":false,"usgs":false,"family":"Niemczyk","given":"Sharon","email":"","affiliations":[],"preferred":false,"id":650647,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fink, Larry E.","contributorId":175268,"corporation":false,"usgs":false,"family":"Fink","given":"Larry","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":650646,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Laine, Krysten A.","contributorId":175267,"corporation":false,"usgs":false,"family":"Laine","given":"Krysten","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":650645,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Howard, Nicole","contributorId":140036,"corporation":false,"usgs":false,"family":"Howard","given":"Nicole","email":"","affiliations":[],"preferred":false,"id":650656,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Krabbenhoft, David P. 0000-0003-1964-5020 dpkrabbe@usgs.gov","orcid":"https://orcid.org/0000-0003-1964-5020","contributorId":1658,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"David","email":"dpkrabbe@usgs.gov","middleInitial":"P.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true},{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":650641,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Zucker, Mark mzucker@usgs.gov","contributorId":2096,"corporation":false,"usgs":true,"family":"Zucker","given":"Mark","email":"mzucker@usgs.gov","affiliations":[],"preferred":true,"id":650642,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70193012,"text":"70193012 - 2011 - Effect of land cover change on runoff curve number estimation in Iowa, 1832-2001","interactions":[],"lastModifiedDate":"2017-11-21T14:08:36","indexId":"70193012","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2011","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1447,"text":"Ecohydrology","active":true,"publicationSubtype":{"id":10}},"title":"Effect of land cover change on runoff curve number estimation in Iowa, 1832-2001","docAbstract":"<p><span>Within the first few decades of European-descended settlers arriving in Iowa, much of the land cover across the state was transformed from prairie and forest to farmland, patches of forest, and urbanized areas. Land cover change over the subsequent 126 years was minor in comparison. Between 1832 and 1859, the General Land Office conducted a survey of the State of Iowa to aid in the disbursement of land. In 1875, an illustrated atlas of the State of Iowa was published, and in 2001, the US Geological Survey National Land Cover Dataset was compiled. Using these three data resources for classifying land cover, the hydrologic impact of the land cover change at three points in time over a period of 132+ years is presented in terms of the effect on the area-weighted average curve number, a term commonly used to predict peak runoff from rainstorms. In the four watersheds studied, the area-weighted average curve number associated with the first 30 years of settlement increased from 61·4 to 77·8. State-wide mapped forest area over this same period decreased 19%. Over the next 126 years, the area-weighted average curve number decreased to 76·7, despite an additional forest area reduction of 60%. This suggests that degradation of aquatic resources (plants, fish, invertebrates, and habitat) arising from hydrologic alteration was likely to have been much higher during the 30 years of initial settlement than in the subsequent period of 126 years in which land cover changes resulted primarily from deforestation and urbanization.&nbsp;</span></p>","language":"English","publisher":"Wiley","doi":"10.1002/eco.162","usgsCitation":"Wehmeyer, L.L., Weirich, F.H., and Cuffney, T.F., 2011, Effect of land cover change on runoff curve number estimation in Iowa, 1832-2001: Ecohydrology, v. 4, no. 2, p. 315-321, https://doi.org/10.1002/eco.162.","productDescription":"7 p.","startPage":"315","endPage":"321","ipdsId":"IP-017288","costCenters":[{"id":476,"text":"North Carolina Water Science Center","active":true,"usgs":true}],"links":[{"id":349219,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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tcuffney@usgs.gov","orcid":"https://orcid.org/0000-0003-1164-5560","contributorId":517,"corporation":false,"usgs":true,"family":"Cuffney","given":"Thomas","email":"tcuffney@usgs.gov","middleInitial":"F.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":723082,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":98922,"text":"sir20105185 - 2010 - Estimation of selected seasonal streamflow statistics representative of 1930–2002 in West Virginia","interactions":[],"lastModifiedDate":"2021-07-14T17:10:36.458182","indexId":"sir20105185","displayToPublicDate":"2021-07-14T13:15:00","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2010-5185","displayTitle":"Estimation of Selected Seasonal Streamflow Statistics Representative of 1930–2002 in West Virginia","title":"Estimation of selected seasonal streamflow statistics representative of 1930–2002 in West Virginia","docAbstract":"Regional equations and procedures were developed for estimating seasonal 1-day 10-year, 7-day 10-year, and 30-day 5-year hydrologically based low-flow frequency values for unregulated streams in West Virginia. Regional equations and procedures also were developed for estimating the seasonal U.S. Environmental Protection Agency harmonic-mean flows and the 50-percent flow-duration values. The seasons were defined as winter (January 1-March 31), spring (April 1-June 30), summer (July 1-September 30), and fall (October 1-December 31).\r\n\r\nRegional equations were developed using ordinary least squares regression using statistics from 117 U.S. Geological Survey continuous streamgage stations as dependent variables and basin characteristics as independent variables. Equations for three regions in West Virginia-North, South-Central, and Eastern Panhandle Regions-were determined. Drainage area, average annual precipitation, and longitude of the basin centroid are significant independent variables in one or more of the equations. The average standard error of estimates for the equations ranged from 12.6 to 299 percent.\r\n\r\nProcedures developed to estimate the selected seasonal streamflow statistics in this study are applicable only to rural, unregulated streams within the boundaries of West Virginia that have independent variables within the limits of the stations used to develop the regional equations: drainage area from 16.3 to 1,516 square miles in the North Region, from 2.78 to 1,619 square miles in the South-Central Region, and from 8.83 to 3,041 square miles in the Eastern Panhandle Region; average annual precipitation from 42.3 to 61.4 inches in the South-Central Region and from 39.8 to 52.9 inches in the Eastern Panhandle Region; and longitude of the basin centroid from 79.618 to 82.023 decimal degrees in the North Region. All estimates of seasonal streamflow statistics are representative of the period from the 1930 to the 2002 climatic year.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20105185","collaboration":"Prepared in cooperation with\r\nthe West Virginia Department of Environmental Protection, \r\nDivision of Water and Waste Management","usgsCitation":"Wiley, J.B., and Atkins, J.T., Jr., 2010, Estimation of selected seasonal streamflow statistics representative of 1930–2002 in West Virginia (ver. 1.1, July 2021): U.S. Geological Survey Scientific Investigations Report 2010–5185, 20 p., https://doi.org/10.3133/sir20105185.","productDescription":"Report: viii, 20 p.","onlineOnly":"Y","additionalOnlineFiles":"N","temporalStart":"1930-10-01","temporalEnd":"2002-09-30","costCenters":[{"id":37280,"text":"Virginia and West Virginia Water Science Center ","active":true,"usgs":true}],"links":[{"id":386953,"rank":3,"type":{"id":25,"text":"Version History"},"url":"https://pubs.usgs.gov/sir/2010/5185/versionHist.txt","size":"2.14 KB","linkFileType":{"id":2,"text":"txt"}},{"id":386949,"rank":4,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2010/5185/sir20105185.pdf","text":"Report","size":"4.41 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIR 2010-5185"},{"id":126109,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/sir/2010/5185/coverthb3.jpg"},{"id":14344,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2010/5185/index.html","linkFileType":{"id":5,"text":"html"}}],"projection":"Universal Transverse Mercator","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -83,37 ], [ -83,41 ], [ -77,41 ], [ -77,37 ], [ -83,37 ] ] ] } } ] }","edition":"Version 1.1: July 2021; Version 1.0: December 2010","contact":"<p><a href=\"mailto:dc_va@usgs.gov;%20dc_wv@usgs.gov\" data-mce-href=\"mailto:dc_va@usgs.gov;%20dc_wv@usgs.gov\">Director</a>, <a href=\"https://www.usgs.gov/centers/va-wv-water\" data-mce-href=\"https://www.usgs.gov/centers/va-wv-water\">Virginia and West Virginia Water Science Center</a><br>U.S. Geological Survey<br>1730 E. Parham Road<br>Richmond, VA 23228</p>","tableOfContents":"<ul><li>Abstract</li><li>Introduction</li><li>Selected Seasonal Streamflow Statistics</li><li>Development of Equations for Estimating Selected Seasonal Streamflow Statistics</li><li>Procedures for Estimating Selected Seasonal Streamflow Statistics</li><li>Example Applications of Procedures for Estimating Selected Seasonal Streamflow Statistics</li><li>Limitations of Procedures for Estimating Selected Seasonal Streamflow Statistics</li><li>Summary</li><li>Acknowledgments</li><li>References Cited</li></ul>","publishingServiceCenter":{"id":10,"text":"Baltimore PSC"},"publishedDate":"2010-12-09","revisedDate":"2021-07-14","noUsgsAuthors":false,"publicationDate":"2010-12-09","publicationStatus":"PW","scienceBaseUri":"4f4e4a0ae4b07f02db5fb20f","contributors":{"authors":[{"text":"Wiley, Jeffrey B.","contributorId":59746,"corporation":false,"usgs":true,"family":"Wiley","given":"Jeffrey","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":306946,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Atkins, John T. jtatkins@usgs.gov","contributorId":2804,"corporation":false,"usgs":true,"family":"Atkins","given":"John","email":"jtatkins@usgs.gov","middleInitial":"T.","affiliations":[],"preferred":true,"id":306945,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70041702,"text":"70041702 - 2010 - The 7Q10 in South Carolina water-quality regulation: Nearly fifty years later","interactions":[],"lastModifiedDate":"2016-11-30T12:13:08","indexId":"70041702","displayToPublicDate":"2015-06-09T09:15:00","publicationYear":"2010","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The 7Q10 in South Carolina water-quality regulation: Nearly fifty years later","docAbstract":"<p>The annual minimum 7-day average streamflow with a 10-year recurrence interval, often referred to as the 7Q10, has a long history of being an important low-flow statistic used in water-quality management in South Carolina as evidenced by its adoption into South Carolina law in 1967. State agencies, such as the South Carolina Department of Health and Environmental Control and the South Carolina Department of Natural Resources, use such lowflow statistics to determine Wasteload Allocations for National Pollutant Discharge Elimination System discharges, develop Total Maximum Daily Loads for streams, prepare the State Water Plan, and restrict the quantity of water that can be transferred out of basin. The U.S. Geological Survey, working cooperatively with the South Carolina Department of Health and Environmental Control, is updating low-flow statistics at continuous-record streamflow gages in South Carolina on a basin-by-basin approach. Such statistics are influenced by length of record and hydrologic conditions under which the record was collected. Statewide low-flow statistics in South Carolina were last updated in 1987. Since that time several droughts have occurred with the most severe occurring from 1998-2002 and the most recent occurring from 2006-2009. The low-flow statistics for the Pee Dee River basin were the first to be completed in this ongoing investigation.</p>","conferenceTitle":"Proceedings of the 2010 South Carolina Water Resources Conference","conferenceDate":"October 13-14, 2010","conferenceLocation":"Columbia, SC","language":"English","usgsCitation":"Feaster, T., and Cantrell, W.M., 2010, The 7Q10 in South Carolina water-quality regulation: Nearly fifty years later, Proceedings of the 2010 South Carolina Water Resources Conference, Columbia, SC, October 13-14, 2010, 5 p.","productDescription":"5 p.","numberOfPages":"5","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-022536","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":310777,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South 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,{"id":70038618,"text":"70038618 - 2010 - Development of inferential sensors for real-time quality control of water-level data for the Everglades Depth Estimation Network","interactions":[],"lastModifiedDate":"2015-10-29T12:33:43","indexId":"70038618","displayToPublicDate":"2015-06-08T08:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":12,"text":"Conference publication"},"title":"Development of inferential sensors for real-time quality control of water-level data for the Everglades Depth Estimation Network","docAbstract":"<p>The Everglades Depth Estimation Network (EDEN) is an integrated network of real-time water-level gaging stations, ground-elevation models, and watersurface models designed to provide scientists, engineers, and water-resource managers with current (2000-present) water-depth information for the entire freshwater portion of the greater Everglades. The generation of EDEN waterlevel surfaces is derived from real-time data. Real-time data are automatically checked for outliers using minimum, maximum, and rate-of-change thresholds for each station. Smaller errors in the real-time data, such as gradual drift of malfunctioning pressure transducers, are more difficult to immediately identify with visual inspection of time-series plots and may only be identified during on-site inspections of the gages. Correcting smaller errors in the data often is time consuming and water-level data may not be finalized for several months. To provide water-level surfaces on a daily basis, EDEN needed an automated process to identify errors in water-level data and to provide estimates for missing or erroneous waterlevel data.</p>\n<p>A technology often used for industrial applications is &ldquo;inferential sensor.&rdquo; Rather than installing a redundant sensor to measure a process, such as an additional waterlevel gage, an inferential sensor, or virtual sensor, is developed that estimates the processes measured by the physical sensor. The advantage of an inferential sensor is that it provides a redundant signal to the sensor in the field but without exposure to environmental threats. In the event that a gage does malfunction, the inferential sensor provides an estimate for the period of missing data. The inferential sensor also can be used in the quality assurance and quality control of the data. Inferential sensors for gages in the EDEN network are currently (2010) under development. The inferential sensors will be automated so that the real-time EDEN data will continuously be compared to the inferential sensor signal and digital reports of the status of the real-time data will be sent periodically to the appropriate support personnel. The development and application of inferential sensors is easily transferable to other real-time hydrologic monitoring networks.</p>","conferenceTitle":"Proceedings of the 2010 South Carolina Water Resources Conference","conferenceDate":"October 13-14, 2010","conferenceLocation":"Columbia, South Carolina","language":"English","usgsCitation":"Daamen, R.C., Edwin A. Roehl, J., and Conrads, P., 2010, Development of inferential sensors for real-time quality control of water-level data for the Everglades Depth Estimation Network, Proceedings of the 2010 South Carolina Water Resources Conference, Columbia, South Carolina, October 13-14, 2010, 4 p.","productDescription":"4 p.","numberOfPages":"4","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-022769","costCenters":[{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true}],"links":[{"id":310764,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Everglades National Park","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -81.84814453125,\n              24.958670130576788\n            ],\n            [\n              -81.84814453125,\n              26.56396337134019\n            ],\n            [\n              -80.19195556640625,\n              26.56396337134019\n            ],\n            [\n              -80.19195556640625,\n              24.958670130576788\n            ],\n            [\n              -81.84814453125,\n              24.958670130576788\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56334337e4b048076347eebd","contributors":{"authors":[{"text":"Daamen, Ruby C.","contributorId":105391,"corporation":false,"usgs":true,"family":"Daamen","given":"Ruby","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":578705,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwin A. Roehl, Jr.","contributorId":121477,"corporation":false,"usgs":true,"family":"Edwin A. Roehl","given":"Jr.","affiliations":[],"preferred":false,"id":578706,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Conrads, Paul 0000-0003-0408-4208 pconrads@usgs.gov","orcid":"https://orcid.org/0000-0003-0408-4208","contributorId":764,"corporation":false,"usgs":true,"family":"Conrads","given":"Paul","email":"pconrads@usgs.gov","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true}],"preferred":false,"id":578707,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70041555,"text":"70041555 - 2010 - Seasonal and decadal-scale channel evolution on the dammed Elwha River, Washington","interactions":[],"lastModifiedDate":"2022-11-14T16:25:22.816003","indexId":"70041555","displayToPublicDate":"2014-07-21T01:15:00","publicationYear":"2010","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Seasonal and decadal-scale channel evolution on the dammed Elwha River, Washington","docAbstract":"<p>More than 75,000 dams exist in the continental United States to provide water storage, flood control, and hydropower generation (Graf, 1999). Many of these were built during the early twentieth century and are due for relicensing consideration now and in the near future. The cost of repairing aging dams, together with growing understanding of the ecologic effects of river regulation (Williams and Wolman, 1984; Dynesius and Nilsson, 1994; Graf, 1999, 2003; Yang et al., 2007), in some places have prompted dam removal, facilitating restoration of riparian habitat to a more natural state. In the Pacific Northwest region of the U.S., river-restoration efforts are commonly targeted to improve habitat quality for native salmonid fish species, many runs of which have declined precipitiously from their historical conditions (owing, in part, to overfishing and habitat loss and degradation) and are now endangered (e.g., Nehlsen, 1997; Larsen et al., 2004; Pess et al., 2008). Removal of dams that block the upstream migration of anadromous fish is considered an important step toward any potential recovery of Pacific Northwest salmon and steelhead populations. </p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Joint Federal Interagency Conference on Sedimentation and Hydrologic Modeling","conferenceDate":"June 27-July 1, 2010","conferenceLocation":"Las Vegas, NV","language":"English","publisher":"Joint Federal Interagency Conference","usgsCitation":"Draut, A., Logan, J., Mastin, M.C., and McCoy, R.E., 2010, Seasonal and decadal-scale channel evolution on the dammed Elwha River, Washington, <i>in</i> Proceedings of the Joint Federal Interagency Conference 2010: Hydrology and sedimentation for a changing future: Existing and emerging issues, Las Vegas, NV, June 27-July 1, 2010, 12 p.","productDescription":"12 p.","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-018432","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true},{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"links":[{"id":319839,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":319838,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://acwi.gov/sos/pubs/2ndJFIC/"}],"country":"United States","state":"Washington","otherGeospatial":"Elwha River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -123.45,\n              48.136488877992974\n            ],\n            [\n              -123.68396159504877,\n              48.136488877992974\n            ],\n            [\n              -123.68396159504877,\n              47.51745573499318\n            ],\n            [\n              -123.45,\n              47.51745573499318\n            ],\n            [\n              -123.45,\n              48.136488877992974\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"572486abe4b0b13d39159754","contributors":{"authors":[{"text":"Draut, Amy E. aeast@usgs.gov","contributorId":139707,"corporation":false,"usgs":true,"family":"Draut","given":"Amy E.","email":"aeast@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":626146,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Logan, Joshua B.","contributorId":34470,"corporation":false,"usgs":true,"family":"Logan","given":"Joshua B.","affiliations":[],"preferred":false,"id":626147,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mastin, Mark C. 0000-0003-4018-7861 mcmastin@usgs.gov","orcid":"https://orcid.org/0000-0003-4018-7861","contributorId":1652,"corporation":false,"usgs":true,"family":"Mastin","given":"Mark","email":"mcmastin@usgs.gov","middleInitial":"C.","affiliations":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"preferred":true,"id":652895,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McCoy, Randall E.","contributorId":45795,"corporation":false,"usgs":true,"family":"McCoy","given":"Randall","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":652896,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
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