The Farm Process Version 2 (FMP2) for MODFLOW-2005 - Modifications and Upgrades to FMP1
Wolfgang Schmid, R. T. Hanson
2009, Techniques and Methods 6-A32
The ability to dynamically simulate the integrated supply-and-demand components of irrigated agricultural is needed to thoroughly understand the interrelation between surface water and groundwater flow in areas where the water-use by vegetation is an important component of the water budget. To meet this need, the computer program Farm Process (FMP1)...
Geochemical investigation of the Arbuckle-Simpson Aquifer, South-Central Oklahoma, 2004-06
Scott Christenson, Andrew G. Hunt, David L. Parkhurst
2009, Scientific Investigations Report 2009-5036
A geochemical reconnaissance investigation of the Arbuckle-Simpson aquifer in south-central Oklahoma was initiated in 2004 to characterize the ground-water quality at an aquifer scale, to describe the chemical evolution of ground water as it flows from recharge areas to discharge in wells and springs, and to determine the residence time...
Emerging opportunities in management of selenium contamination
Samuel N. Luoma, Theresa S. Presser
2009, Environmental Science & Technology (43) 8483-8487
The metalloid selenium (Se) has the diverse reactivity characteristic of the chalcogens in addition to organometallic behavior. Laboratory measurements indicate that Se is an acute reproductive toxicant, which makes it a concern for the environment. Yet to date, a lack of understanding on how Se species...
Methods of analysis: Determination of pyrethroid insecticides in water and sediment using gas chromatography/mass spectrometry
Michelle Hladik, Kelly L. Smalling, Kathryn Kuivila
2009, Techniques and Methods 5-C2
A method for the determination of 14 pyrethroid insecticides in environmental water and sediment samples is described. The method was developed by the U.S. Geological Survey in response to increasing concern over the effects of pyrethroids on aquatic organisms. The pyrethroids included in this method are ones that are applied...
Reconnaissance of pharmaceutical chemicals in urban streams of the Tualatin River Basin, Oregon, 2002
Stewart A. Rounds, Micelis C. Doyle, Patrick M. Edwards, Edward T. Furlong
2009, Scientific Investigations Report 2009-5119
A reconnaissance of pharmaceutical chemicals in urban streams of the Tualatin River basin was conducted in July 2002 in an effort to better understand the occurrence and distribution of such compounds, and to determine whether they might be useful indicators of human-related stream contamination. Of the 21 pharmaceutical chemicals and...
Effects of Water-Management Strategies on Water Resources in the Pawcatuck River Basin, Southwestern Rhode Island and Southeastern Connecticut
Robert F. Breault, Phillip J. Zarriello, Gardner C. Bent, John P. Masterson, Gregory E. Granato, J. Eric Scherer, Kathleen M. Crawley
2009, Circular 1340
The Pawcatuck River Basin in southwestern Rhode Island and southeastern Connecticut is an important high-quality water resource for domestic and public supplies, irrigation, recreation, and the aquatic ecosystem. Concerns about the effects of water withdrawals on aquatic habitat in the basin have prompted local, State, and Federal agencies to explore...
Data on mercury in water, bed sediment, and fish from streams across the United States, 1998-2005
Nancy J. Bauch, Lia C. Chasar, Barbara C. Scudder, Patrick W. Moran, Kerie J. Hitt, Mark E. Brigham, Michelle A. Lutz, Dennis A. Wentz
2009, Data Series 307
The U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) and Toxic Substances Hydrology Programs conducted the National Mercury Pilot Study in 1998 to examine relations of mercury (Hg) in water, bed sediment and fish in streams across the United States, including Alaska and Hawaii. Water and bed-sediment samples were analyzed...
Mercury in fish, bed sediment, and water from streams across the United States, 1998-2005
Barbara C. Scudder, Lia C. Chasar, Dennis A. Wentz, Nancy J. Bauch, Mark E. Brigham, Patrick W. Moran, David P. Krabbenhoft
2009, Scientific Investigations Report 2009-5109
Mercury (Hg) was examined in top-predator fish, bed sediment, and water from streams that spanned regional and national gradients of Hg source strength and other factors thought to influence methylmercury (MeHg) bioaccumulation. Sampled settings include stream basins that were agricultural, urbanized, undeveloped (forested, grassland, shrubland, and wetland land cover), and...
Hydrologic Setting and Conceptual Hydrologic Model of the Walker River Basin, West-Central Nevada
Thomas J. Lopes, Kip K. Allander
2009, Scientific Investigations Report 2009-5155
The Walker River is the main source of inflow to Walker Lake, a closed-basin lake in west-central Nevada. Between 1882 and 2008, agricultural diversions resulted in a lake-level decline of more than 150 feet and storage loss of 7,400,000 acre-ft. Evaporative concentration increased dissolved solids from 2,500 to 17,000 milligrams...
Boundary of the Eagle River watershed valley-fill aquifer, Eagle County, north-central Colorado, 2006-2007
Michael G. Rupert, Niel Plummer
2009, Data Series 458
This vector data set delineates the approximate boundary of the Eagle River watershed valley-fill aquifer (ERWVFA). This data set was developed by a cooperative project between the U.S. Geological Survey, Eagle County, the Eagle River Water and Sanitation District, the Town of Eagle, the Town of Gypsum, and the Upper...
Digital representation of 1:1,000,000-scale hydrographic areas of the Great Basin
Susan G. Buto
2009, Data Series 457
Hydrographic areas (HA) in Nevada were delineated by the U.S. Geological Survey (USGS) and Nevada Division of Water Resources in the late 1960s for scientific and administrative purposes. The official HA names, numbers, and boundaries continue to be used in USGS scientific reports and Nevada State Division of Water Resources...
Revised multi-node well (MNW2) package for MODFLOW ground-water flow model
Leonard F. Konikow, George Z. Hornberger, Keith J. Halford, Randall T. Hanson, Arlen W. Harbaugh
2009, Techniques and Methods 6-A30
Wells that are open to multiple aquifers can provide preferential pathways to flow and solute transport that short-circuit normal fluid flowlines. Representing these features in a regional flow model can produce a more realistic and reliable simulation model. This report describes modifications to the Multi-Node Well (MNW) Package of the...
Magnetotelluric and audiomagnetotelluric groundwater survey along the Humu'ula portion of Saddle Road near and around the Pohakuloa Training Area, Hawaii
Herbert A. Pierce, Donald M. Thomas
2009, Open-File Report 2009-1135
The Pohakuloa Training Area (PTA), operated by the U.S. Army on the Big Island of Hawaii, is in need of a reliable potable water supply to sustain ongoing operations by staff and trainees. In an effort to acquire baseline hydrologic data with which to develop a plan for providing that...
Effect of detention basin release rates on flood flows: Application of a model to the Blackberry Creek Watershed in Kane County, Illinois
David T. Soong, Elizabeth A. Murphy, Timothy D. Straub
2009, Scientific Investigations Report 2009-5106
The effects of stormwater detention basins with specified release rates are examined on the watershed scale with a Hydrological Simulation Program - FORTRAN (HSPF) continuous-simulation model. Modeling procedures for specifying release rates from detention basins with orifice and weir discharge configurations are discussed in this report. To facilitate future detention...
Book review: Fundamentals of rock mechanics
Paul A. Hsieh
2009, Geofluids (9) 251-252
No abstract available. ...
The role of climate in the dynamics of a hybrid zone in Appalachian salamanders
Susan C. Walls
2009, Global Change Biology (15) 1903-1910
I examined the potential influence of climate change on the dynamics of a previously studied hybrid zone between a pair of terrestrial salamanders at the Coweeta Hydrologic Laboratory, U.S. Forest Service, in the Nantahala Mountains of North Carolina, USA. A 16-year study led by Nelson G. Hairston, Sr. revealed that...
Estimating Low-Flow Frequency Statistics and Hydrologic Analysis of Selected Streamflow-Gaging Stations, Nooksack River Basin, Northwestern Washington and Canada
Christopher A. Curran, Theresa D. Olsen
2009, Scientific Investigations Report 2009-5170
Low-flow frequency statistics were computed at 17 continuous-record streamflow-gaging stations and 8 miscellaneous measurement sites in and near the Nooksack River basin in northwestern Washington and Canada, including the 1, 3, 7, 15, 30, and 60 consecutive-day low flows with recurrence intervals of 2 and 10 years. Using these low-flow...
Excel Spreadsheet Tools for Analyzing Groundwater Level Records and Displaying Information in ArcMap
Fred D. Tillman
2009, Techniques and Methods 4-F1
When beginning hydrologic investigations, a first action is often to gather existing sources of well information, compile this information into a single dataset, and visualize this information in a geographic information system (GIS) environment. This report presents tools (macros) developed using Visual Basic for Applications (VBA) for Microsoft Excel 2007...
The USGS and the Gulf of Mexico
Alyssa M. Dausman, Kate Spear
2009, Fact Sheet 2009-3059
The U.S. Geological Survey (USGS) is committed to mapping, monitoring, and conducting research in the Gulf of Mexico and adjacent watersheds. Through a network of science centers in the five Gulf States and across the Nation, the USGS applies its biologic, geologic, geographic, and hydrologic expertise to provide unbiased scientific...
Modeling Flood Plain Hydrology and Forest Productivity of Congaree Swamp, South Carolina
Thomas W. Doyle
2009, Scientific Investigations Report 2009-5130
An ecological field and modeling study was conducted to examine the flood relations of backswamp forests and park trails of the flood plain portion of Congaree National Park, S.C. Continuous water level gages were distributed across the length and width of the flood plain portion - referred to as 'Congaree...
Groundwater quality, age, and probability of contamination, Eagle River watershed valley-fill aquifer, north-central Colorado, 2006-2007
Michael G. Rupert, Niel Plummer
2009, Scientific Investigations Report 2009-5082
The Eagle River watershed is located near the destination resort town of Vail, Colorado. The area has a fastgrowing permanent population, and the resort industry is rapidly expanding. A large percentage of the land undergoing development to support that growth overlies the Eagle River watershed valley-fill aquifer (ERWVFA), which likely...
Hydrology of the Johnson Creek Basin, Oregon
Karl K. Lee, Daniel T. Snyder
2009, Scientific Investigations Report 2009-5123
The Johnson Creek basin is an important resource in the Portland, Oregon, metropolitan area. Johnson Creek forms a wildlife and recreational corridor through densely populated areas of the cities of Milwaukie, Portland, and Gresham, and rural and agricultural areas of Multnomah and Clackamas Counties. The basin has changed as a...
Errata: Atomic weights of the elements: Review 2000
John R. de Laeter, John Karl Bohlke, P. De Bievre, H. Hidaka, H.S. Peiser, K.J.R. Rosman, P.D.P. Taylor
2009, Pure and Applied Chemistry (81) 1535-1536
No abstract available. ...
Hydrology, Water Quality, and Aquatic Communities of Selected Springs in the St. Johns River Water Management District, Florida
Stephen J. Walsh, Leel Knowles Jr., Brian G. Katz, Douglas G. Strom
2009, Scientific Investigations Report 2009-5046
Hydrologic, physicochemical, and aquatic community data were collected and compiled by the U.S. Geological Survey for selected springs within the St. Johns River Water Management District from January 2004 to October 2007. Nine springs were included in this study: Alexander, Apopka, Bugg, De Leon, Gemini, Green, Rock, Silver Glen, and...
Methods and basic data from mass-loading studies in American Fork, October 1999, and Mary Ellen Gulch, Utah, September 2000
Briant A. Kimball, Robert L. Runkel, Linda J. Gerner
2009, Data Series 443
Land-management agencies are faced with decisions about remediation in streams affected by mine drainage. In support of the U. S. Forest Service, for the Uinta National Forest, the U.S. Geological Survey conducted mass-loading studies in American Fork and Mary Ellen Gulch, Utah. Synoptic samples were collected along a 10,000-meter study...
