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4723 results.

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Page 72, results 1776 - 1800

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Analysis of floods, including the tropical storm Irene inundation, of the Ottauquechee River in Woodstock, Bridgewater, and Killington and of Reservoir Brook in Bridgewater and Plymouth, Vermont
Robert H. Flynn
2014, Scientific Investigations Report 2014-5214
Digital flood-inundation maps were created by the U.S. Geological Survey (USGS) in cooperation with the U.S. Army Corps of Engineers, New York District for a 25-mile reach of the Ottauquechee River and a 2-mile reach of Reservoir Brook in Vermont. The reach of the Ottauquechee River that was studied extends...
Historical and projected climate (1901–2050) and hydrologic response of karst aquifers, and species vulnerability in south-central Texas and western South Dakota
John F. Stamm, Mary F. Poteet, Amy J. Symstad, MaryLynn Musgrove, Andrew J. Long, Barbara Mahler, Parker A. Norton
2014, Scientific Investigations Report 2014-5089
Two karst aquifers, the Edwards aquifer in the Balcones Escarpment region of south-central Texas and the Madison aquifer in the Black Hills of western South Dakota, were evaluated for hydrologic response to projected climate change through 2050. Edwards aquifer sites include Barton Springs, the Bexar County Index Well, and Comal...
Steady-state numerical groundwater flow model of the Great Basin carbonate and alluvial aquifer system
Lynette E. Brooks, Melissa D. Masbruch, Donald S. Sweetkind, Susan G. Buto
2014, Scientific Investigations Report 2014-5213
This report describes the construction, calibration, evaluation, and results of a steady-state numerical groundwater flow model of the Great Basin carbonate and alluvial aquifer system that was developed as part of the U.S. Geological Survey National Water Census Initiative to evaluate the nation’s groundwater availability. The study area spans 110,000...
Significance of a near-source tephra-stratigraphic sequence to the eruptive history of Hayes Volcano, south-central Alaska
Kristi L. Wallace, Michelle L. Coombs, Leslie A. Hayden, Christopher F. Waythomas
2014, Scientific Investigations Report 2014-5133
Bluffs along the Hayes River valley, 31 km northeast and 40 km downstream from Hayes Volcano, reveal volcanic deposits that shed new light on its eruptive history. Three thick (>10 cm) and five thin (<10 cm) tephra-fall deposits are dacitic in whole rock composition and contain high proportions of amphibole...
Methods for estimating magnitude and frequency of floods in Arizona, developed with unregulated and rural peak-flow data through water year 2010
Nicholas V. Paretti, Jeffrey R. Kennedy, Lovina A. Turney, Andrea G. Veilleux
2014, Scientific Investigations Report 2014-5211
Flooding is among the worst natural disasters responsible for loss of life and property in Arizona, underscoring the importance of accurate estimation of flood magnitude for proper structural design and floodplain mapping. Twenty-four years of additional peak-flow data have been recorded since the last comprehensive regional flood frequency analysis conducted...
Methods for estimating magnitude and frequency of 1-, 3-, 7-, 15-, and 30-day flood-duration flows in Arizona
Jeffrey R. Kennedy, Nicholas V. Paretti, Andrea G. Veilleux
2014, Scientific Investigations Report 2014-5109
Large floods have historically caused extensive damage in Arizona. Although peak-flow frequency estimates are required for managing the risk posed by floods, estimates of the frequency of sustained flood flow (flood-duration flow) are also useful for planning and assessing the adequacy of retention and conveyance structures and for water-resource planning....
Evaluation of the magnitude and frequency of floods in urban watersheds in Phoenix and Tucson, Arizona
Jeffrey R. Kennedy, Nicholas V. Paretti
2014, Scientific Investigations Report 2014-5121
Flooding in urban areas routinely causes severe damage to property and often results in loss of life. To investigate the effect of urbanization on the magnitude and frequency of flood peaks, a flood frequency analysis was carried out using data from urbanized streamgaging stations in Phoenix and Tucson, Arizona. Flood...
Hydrogeologic framework and groundwater/surface-water interactions of the South Fork Nooksack River Basin, northwestern Washington
Andrew S. Gendaszek
2014, Scientific Investigations Report 2014-5221
A hydrogeologic framework of the South Fork (SF) Nooksack River Basin in northwestern Washington was developed and hydrologic data were collected to characterize the groundwater-flow system and its interaction with surface‑water features. In addition to domestic, agricultural, and commercial uses of groundwater within the SF Nooksack River Basin, groundwater has...
Water quality in Indiana: trends in concentrations of selected nutrients, metals, and ions in streams, 2000-10
Martin R. Risch, Aubrey R. Bunch, Aldo V. Vecchia, Jeffrey D. Martin, Nancy T. Baker
2014, Scientific Investigations Report 2014-5205
Water quality in Indiana streams generally improved during the 2000–10 study period, based on trends in selected nutrients, metals, and ions. This study combined water-quality data from the Indiana Fixed Station Monitoring Program (FSMP) with streamflow data from nearby U.S. Geological Survey streamgages. A parametric time-series model, QWTREND, was used...
Seepage investigation on the Rio Grande from below Caballo Reservoir, New Mexico, to El Paso, Texas, 2012
Mark A. Gunn, D. Michael Roark
2014, Scientific Investigations Report 2014-5197
A seepage investigation was conducted by the U.S. Geological Survey, in cooperation with the New Mexico Interstate Stream Commission, along an approximately 106-mile reach of the Rio Grande from below Caballo Reservoir, New Mexico, to El Paso, Texas, during June 26–28, 2012, to determine gain or loss of streamflow due...
Water-level changes and change in water in storage in the High Plains aquifer, predevelopment to 2013 and 2011-13
Virginia L. McGuire
2014, Scientific Investigations Report 2014-5218
The High Plains aquifer underlies 111.8 million acres (about 175,000 square miles) in parts of eight States—Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. Water-level declines began in parts of the High Plains aquifer soon after the beginning of substantial irrigation with groundwater in the aquifer area...
Potash: a global overview of evaporate-related potash resources, including spatial databases of deposits, occurrences, and permissive tracts
Greta J. Orris, Mark D. Cocker, Pamela Dunlap, Jeff C. Wynn, Gregory T. Spanski, Deborah A. Briggs, Leila Gass, James D. Bliss, Karen S. Bolm, Chao Yang, Bruce R. Lipin, Stephen Ludington, Robert J. Miller, Miroslaw Slowakiewicz
2014, Scientific Investigations Report 2010-5090-S
Potash is mined worldwide to provide potassium, an essential nutrient for food crops. Evaporite-hosted potash deposits are the largest source of salts that contain potassium in water-soluble form, including potassium chloride, potassium-magnesium chloride, potassium sulfate, and potassium nitrate. Thick sections of evaporitic salt that form laterally continuous strata in sedimentary...
Lidar point density analysis: implications for identifying water bodies
Bruce B. Worstell, Sandra K. Poppenga, Gayla A. Evans, Sandra Prince
2014, Scientific Investigations Report 2014-5191
Most airborne topographic light detection and ranging (lidar) systems operate within the near-infrared spectrum. Laser pulses from these systems frequently are absorbed by water and therefore do not generate reflected returns on water bodies in the resulting void regions within the lidar point cloud. Thus, an analysis of lidar voids...
Methods for estimating drought streamflow probabilities for Virginia streams
Samuel H. Austin
2014, Scientific Investigations Report 2014-5145
Maximum likelihood logistic regression model equations used to estimate drought flow probabilities for Virginia streams are presented for 259 hydrologic basins in Virginia. Winter streamflows were used to estimate the likelihood of streamflows during the subsequent drought-prone summer months. The maximum likelihood logistic regression models identify probable streamflows from 5...
Estimates of groundwater recharge rates and sources in the East Mountain area, Eastern Bernalillo County, New Mexico, 2005-12
Steven E. Rice, Dianna M. Crilley
2014, Scientific Investigations Report 2014-5181
The U.S. Geological Survey, in cooperation with the Bernalillo County Public Works Division, has conducted a monitoring program in the East Mountain area of eastern Bernalillo County, New Mexico, since 2000 to better define the hydrogeologic characteristics of the East Mountain area and to provide scientific information that will assist...
Evaluation of a mass-balance approach to determine consumptive water use in northeastern Illinois
P.C. Mills, James J. Duncker, Thomas M. Over, Marian Domanski, Marian Domanski, Frank L. Engel
2014, Scientific Investigations Report 2014-5176
A principal component of evaluating and managing water use is consumptive use. This is the portion of water withdrawn for a particular use, such as residential, which is evaporated, transpired, incorporated into products or crops, consumed by humans or livestock, or otherwise removed from the immediate water environment. The amount...
Seismic instrumentation plan for the Hawaiian Volcano Observatory
Weston A. Thelen
2014, Scientific Investigations Report 2014-5179
The seismic network operated by the U.S. Geological Survey’s Hawaiian Volcano Observatory (HVO) is the main source of authoritative data for reporting earthquakes in the State of Hawaii, including those that occur on the State’s six active volcanoes (Kīlauea, Mauna Loa, Hualālai, Mauna Kea, Haleakalā, Lō‘ihi). Of these volcanoes, Kīlauea...
Sources, transport, and trends for selected trace metals and nutrients in the Coeur d'Alene and Spokane River Basins, Idaho, 1990-2013
Gregory M. Clark, Christopher A. Mebane
2014, Scientific Investigations Report 2014-5204
Data collected at 18 streamflow-gaging and water-quality sampling sites in the Coeur d’Alene and Spokane River Basins of northern Idaho were used to estimate mean streamflow‑weighted concentrations and annual loads of total and dissolved cadmium, lead, and zinc, and total phosphorus (TP) and nitrogen (TN) for water years (WYs) 2009–13....
Occurrence model for magmatic sulfide-rich nickel-copper-(platinum-group element) deposits related to mafic and ultramafic dike-sill complexes
Klaus J. Schulz, Laurel G. Woodruff, Suzanne W. Nicholson, Robert R. Seal II, Nadine M. Piatak, Val W. Chandler, John L. Mars
2014, Scientific Investigations Report 2010-5070-I
Magmatic sulfide deposits containing nickel (Ni) and copper (Cu), with or without (±) platinum-group elements (PGE), account for approximately 60 percent of the world’s nickel production. Most of the remainder of the Ni production is derived from lateritic deposits, which form by weathering of ultramafic rocks in humid tropical conditions....
Basin-scale simulation of current and potential climate changed hydrologic conditions in the Lake Michigan Basin, United States
Daniel E. Christiansen, John F. Walker, Randall J. Hunt
2014, Scientific Investigations Report 2014-5175
The Great Lakes Restoration Initiative (GLRI) is the largest public investment in the Great Lakes in two decades. A task force of 11 Federal agencies developed an action plan to implement the initiative. The U.S. Department of the Interior was one of the 11 agencies that entered into an interagency...
Turbidity and suspended sediment in the upper Esopus Creek watershed, Ulster County, New York
Michael R. McHale, Jason Siemion
2014, Scientific Investigations Report 2014-5200
Suspended-sediment concentrations (SSCs) and turbidity were measured for 2 to 3 years at 14 monitoring sites throughout the upper Esopus Creek watershed in the Catskill Mountains of New York State. The upper Esopus Creek watershed is part of the New York City water-supply system that supplies water to more than...
Measurement of unsaturated hydraulic properties and evaluation of property-transfer models for deep sedimentary interbeds, Idaho National Laboratory, Idaho
Kimberlie Perkins, Brittany D. Johnson, Benjamin B. Mirus
2014, Scientific Investigations Report 2014-5206
Operations at the Idaho National Laboratory (INL) have the potential to contaminate the underlying Eastern Snake River Plain (ESRP) aquifer. Methods to quantitatively characterize unsaturated flow and recharge to the ESRP aquifer are needed to inform water-resources management decisions at INL. In particular, hydraulic properties are needed to parameterize distributed...
Assessing inundation hazards to nuclear powerplant sites using geologically extended histories of riverine floods, tsunamis, and storm surges
Jim O’Connor, Brian F. Atwater, Timothy A. Cohn, Thomas M. Cronin, Mackenzie K. Keith, Christopher G. Smith, Mason Jr.
2014, Scientific Investigations Report 2014-5207
Most nuclear powerplants in the United States are near rivers, large lakes, or oceans. As evident from the Fukushima Daiichi, Japan, disaster of 2011, these water bodies pose inundation threats. Geologic records can extend knowledge of rare hazards from flooding, storm surges, and tsunamis. This knowledge can aid in assessing...
Water and nutrient budgets for Vancouver Lake, Vancouver, Washington, October 2010-October 2012
Rich W. Sheibley, James R. Foreman, Cameron A. Marshall, Wendy B. Welch
2014, Scientific Investigations Report 2014-5201
Vancouver Lake, a large shallow lake in Clark County, near Vancouver, Washington, has been undergoing water-quality problems for decades. Recently, the biggest concern for the lake are the almost annual harmful cyanobacteria blooms that cause the lake to close for recreation for several weeks each summer. Despite decades of interest...