Effects of urbanization on stream ecosystems in the South Platte River basin, Colorado and Wyoming
Lori A. Sprague, Robert E. Zuellig, Jean A. Dupree
2006, Scientific Investigations Report 2006-5101-A
This report describes the effects of urbanization on physical, chemical, and biological characteristics of stream ecosystems in 28 basins along an urban land-use gradient in the South Platte River Basin, Colorado and Wyoming, from 2002 through 2003. Study basins were chosen to minimize natural variability among basins due to factors...
Hydrologic Requirements of and Evapotranspiration by Riparian Vegetation along the San Pedro River, Arizona
James M. Leenhouts, Julie C. Stromberg, Russell L. Scott
2006, Fact Sheet 2006-3027
This report summarizes analyses of riparian system hydrologic requirements and ground-water use detailed in U.S. Geological Survey Scientific Investigations Report 2005-5163, 'Hydrologic requirements of and consumptive ground-water use by riparian vegetation along the San Pedro River, Arizona,' compiled by J.M. Leenhouts, J.C. Stromberg, and R.L. Scott....
1976 Big Thompson flood, Colorado — Thirty years later
Robert D. Jarrett, John E. Costa
2006, Fact Sheet 2006-3095
In the early evening of Saturday, July 31, 1976, a large stationary thunderstorm released as much as 7.5 inches of rainfall in about an hour (about 12 inches in a few hours) in the middle reaches of the Big Thompson River Basin and to a lesser extent in parts of...
Drought of 1998-2002: impacts on Florida's hydrology and landscape
Richard Jay Verdi, Stewart A. Tomlinson, Richard L. Marella
2006, Circular 1295
Lower than normal precipitation caused a severe statewide drought in Florida from 1998 to 2002. Based on precipitation and streamflow records dating to the early 1900s, the drought was one of the worst ever to affect the State. In terms of severity, this drought was comparable to the drought of...
Characterization of the hydrology, water chemistry, and aquatic communities of selected springs in the St. Johns River Water Management District, Florida, 2004
G. G. Phelps, Stephen J. Walsh, Robert M. Gerwig, William B. Tate
2006, Open-File Report 2006-1107
The hydrology, water chemistry, and aquatic communities of Silver Springs, De Leon Spring, Gemini Springs, and Green Spring in the St. Johns River Water Management District, Florida, were studied in 2004 to provide a better understanding of each spring and to compile data of potential use in future water-management decisions....
Sensitivity of potential evapotranspiration and simulated flow to varying meteorological inputs, Salt Creek watershed, DuPage County, Illinois
David E. Whitbeck
2006, Open-File Report 2005-1430
The Lamoreux Potential Evapotranspiration (LXPET) Program computes potential evapotranspiration (PET) using inputs from four different meteorological sources: temperature, dewpoint, wind speed, and solar radiation. PET and the same four meteorological inputs are used with precipitation data in the Hydrological Simulation Program-Fortran (HSPF) to simulate streamflow in the Salt Creek watershed,...
Compilation of Regional Ground-Water Divides for Principal Aquifers Corresponding to the Great Lakes Basin, United States
R. A. Sheets, L.A. Simonson
2006, Scientific Investigations Report 2006-5102
A compilation of regional ground-water divides for the five principal aquifers corresponding to the Great Lakes Basin within the United States is presented. The principal aquifers (or aquifer systems) are the Cambrian-Ordovician aquifer system, Silurian-Devonian aquifers, Mississippian aquifers, Pennsylvanian aquifers, and the surficial aquifer system. The regional ground-water divides mark...
Concentrations, fluxes, and yields of nitrogen, phosphorus, and suspended sediment in the Illinois River basin, 1996-2000
Paul J. Terrio
2006, Scientific Investigations Report 2006-5078
Concentrations, spatial and temporal variations, and fluxes of nitrogen, phosphorus, and suspended sediment were determined for 16 streams in the Illinois River Basin, Illinois from October 1996 through September 2000. Water samples were collected through the National Water-Quality Assessment's Lower Illinois River Basin (LIRB) and Upper Illinois River Basin (UIRB)...
Hydrologic requirements of and consumptive ground-water use by riparian vegetation along the San Pedro River, Arizona
James M. Leenhouts, Juliet C. Stromberg, Russell L. Scott, Sharon J. Lite, Mark Dixon, Tyler Rychener, Elizabeth Makings, David G. Williams, David C. Goodrich, William L. Cable, Lainie R. Levick, Roberta McGuire, Rico M. Gazal, Enrico A. Yepez, Patrick Ellsworth, Travis E. Huxman
2006, Scientific Investigations Report 2005-5163
This study is a coordinated effort by the U.S. Geological Survey (USGS), the U.S. Department of Agriculture, Agricultural Research Service (USDA ARS), and Arizona State University, with assistance from the U.S. Army Corps of Engineers, the University of Wyoming, and the University of Arizona. The specific objectives of the study...
Effects of a remedial system and its operation on volatile organic compound-contaminated ground water, Operable Unit 1, Savage Municipal Well Superfund Site, Milford, New Hampshire, 1998-2004
Philip T. Harte
2006, Scientific Investigations Report 2006-5083
The Savage Municipal Well Superfund site in the Town of Milford, N.H., is underlain by a 0.5-square mile plume of volatile organic compounds (VOCs), mostly tetrachloroethylene (PCE). The plume occurs mostly within a highly transmissive sand and gravel layer, but also extends into underlying till and bedrock. The plume...
Physical habitat classification and instream flow modeling to determine habitat availability during low-flow periods, North Fork Shenandoah River, Virginia
Jennifer L. Krstolic, Donald C. Hayes, Peter M. Ruhl
2006, Scientific Investigations Report 2006-5025
Increasing development and increasing water withdrawals for public, industrial, and agricultural water supply threaten to reduce streamflows in the Shenandoah River basin in Virginia. Water managers need more information to balance human water-supply needs with the daily streamflows necessary for maintaining the aquatic ecosystems. To meet the need for comprehensive...
Forecasting selenium discharges to the San Francisco Bay-Delta Estuary: Ecological effects of a proposed San Luis Drain extension
Theresa S. Presser, Samuel N. Luoma
2006, Professional Paper 1646
Selenium discharges to the San Francisco Bay-Delta Estuary (Bay-Delta) could change significantly if federal and state agencies (1) approve an extension of the San Luis Drain to convey agricultural drainage from the western San Joaquin Valley to the North Bay (Suisun Bay, Carquinez Strait, and San Pablo Bay); (2) allow...
Chapter 3. Determination of semivolatile organic compounds and polycyclic aromatic hydrocarbons in solids by gas chromatography/mass spectrometry
Steven D. Zaugg, Mark R. Burkhardt, Teresa L. Burbank, Mary C. Olson, Jana L. Iverson, Michael P. Schroeder
2006, Techniques and Methods 5-B3
A method for the determination of 38 polycyclic aromatic hydrocarbons (PAHs) and semivolatile organic compounds in solid samples is described. Samples are extracted using a pressurized solvent extraction system. The compounds of interest are extracted from the solid sample twice at 13,800 kilopascals; first at 120 degrees Celsius using a...
Seasonal changes in concentrations of dissolved pesticides and organic carbon in the Sacramento-San Joaquin delta, California, 1994-1996
James L. Orlando, Kathryn Kuivila
2006, Data Series 197
The Sacramento-San Joaquin Delta (Delta) of California is an ecologically rich and hydrologically complex region that receives runoff from nearly one-quarter of the state. Water-quality studies of surface water in the region have found dissolved pesticides in winter storm runoff at concentrations toxic to some aquatic invertebrates. However, scientists have...
Geohydrology of the lower Apalachicola-Chattahoochee-Flint River basin, southwestern Georgia, northwestern Florida, and southeastern Alabama
Lynn J. Torak, Jaime A. Painter
2006, Scientific Investigations Report 2006-5070
The lower Apalachicola-Chattahoochee-Flint (ACF) River Basin contains about 4,600 square miles of karstic and fluvial plains and nearly 100,000 cubic miles of predominantly karst limestone connected hydraulically to the principal rivers and lakes in the Coastal Plain of southwestern Georgia, northwestern Florida, and southwestern Alabama. Sediments of late-middle Eocene to...
Water use and availability in the West Narragansett Bay area, coastal Rhode Island, 1995-99
Mark T. Nimiroski, Emily C. Wild
2006, Scientific Investigations Report 2005-5256
During the 1999 drought in Rhode Island, belowaverage precipitation caused a drop in ground-water levels and streamflow was below long-term averages. The low water levels prompted the U. S. Geological Survey and the Rhode Island Water Resources Board to conduct a series of cooperative water-use studies. The purpose of these...
Occurrence of diatoms in lakeside wells in northern New Jersey as an indicator of the effect of surface water on ground-water quality
Timothy J. Reilly, Christopher E. Walker, Arthur L. Baehr, Robin M. Schrock, John R. Reinfelder
2006, Scientific Investigations Report 2005-5263
In a novel approach for detecting ground-water/surface-water interaction, diatoms were used as an indicator that surface water affects ground-water quality in lakeside communities in northern New Jersey. The presence of diatoms, which are abundant in lakes, in adjacent domestic wells demonstrated that ground water in these lakeside communities was under...
The behavior of rare earth elements in naturally and anthropogenically acidified waters
Scott A. Wood, Christopher H. Gammons, Stephen R. Parker
2006, Journal of Alloys and Compounds (418) 161-165
In this paper, the behavior of rare earth elements (REE) in a watershed impacted by acid-mine drainage (Fisher Creek, Montana) is compared to that in a volcanically acidified watershed (Rio Agrio and Lake Caviahue, Argentina). The REE behave conservatively in acidic waters with pH values less than approximately 5.5. However,...
Simulation of nutrient and sediment concentrations and loads in the Delaware inland bays watershed: Extension of the hydrologic and water-quality model to ungaged segments
Angelica L. Gutierrez-Magness
2006, Scientific Investigations Report 2006-5038
Rapid population increases, agriculture, and industrial practices have been identified as important sources of excessive nutrients and sediments in the Delaware Inland Bays watershed. The amount and effect of excessive nutrients and sediments in the Inland Bays watershed have been well documented by the Delaware Geological Survey, the Delaware Department...
Regionalized equations for bankfull-discharge and channel characteristics of streams in New York State—Hydrologic Region 7 in western New York
Christiane I. Mulvihill, Anne G. Ernst, Barry P. Baldigo
2006, Scientific Investigations Report 2006-5075
Computation of bankfull discharge and channel dimensions (width, depth, and cross-sectional area) at ungaged sites requires equations that relate bankfull discharge and channel dimensions to drainage-area at gaged sites. Bankfull-channel information commonly is needed for watershed assessments, stream channel classification, and the design of stream-restoration projects. Such equations are most...
Ground-water levels near the top of the water-table mound, western Cape Cod, Massachusetts, 2002-04
Andrew J. Massey, Carl S. Carlson, Denis R. LeBlanc
2006, Scientific Investigations Report 2006-5054
In January 2002 the U.S. Geological Survey began continuous water-level monitoring in three wells in the vicinity of the Southeast Ranges of Camp Edwards, near the Impact Area of the Massachusetts Military Reservation on Cape Cod. The purpose of this effort was to examine how water levels at sites with...
Questa baseline and pre-mining ground-water quality investigation. 21. Hydrology and water balance of the Red River Basin, New Mexico, 1930-2004
Cheryl A. Naus, Douglas P. McAda, Nathan C. Myers
2006, Scientific Investigations Report 2006-5040
A study of the hydrology of the Red River Basin of northern New Mexico, including development of a pre- mining water balance, contributes to a greater understanding of processes affecting the flow and chemistry of water in the Red River and its alluvial aquifer. Estimates of mean annual precipitation for...
Hydrogeophysical tracking of three‐dimensional tracer migration: The concept and application of apparent petrophysical relations
Kamini Singha, Steven M. Gorelick
2006, Water Resources Research (42)
Direct estimation of groundwater solute concentrations from geophysical tomograms has been only moderately successful because (1) reconstructed tomograms are often highly uncertain and subject to inversion artifacts, (2) the range of subsurface conditions represented in data sets is incomplete because of the paucity of colocated well or core data and...
The Everglades Depth Estimation Network (EDEN) for Support of Ecological and Biological Assessments
Pamela A. Telis
2006, Fact Sheet 2006-3087
The Everglades Depth Estimation Network (EDEN) is an integrated network of real-time water-level monitoring, ground-elevation modeling, and water-surface modeling that provides scientists and managers with current (1999-present), online water-depth information for the entire freshwater portion of the Greater Everglades. Presented on a 400-square-meter grid spacing, EDEN offers a consistent and...
Near-Field Receiving Water Monitoring of trace metals and a benthic community near the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay, California: 2005
Daniel J. Cain, Francis Parcheso, Janet K. Thompson, Samuel N. Luoma, Allison H. Lorenzi, Edward Moon, Michelle K. Shouse, Michelle I. Hornberger, Jessica Dyke
2006, Open-File Report 2006-1152
Trace elements in sediment and the clam Macoma petalum (formerly reported as Macoma balthica (Cohen and Carlton 1995)), clam reproductive activity and benthic, macroinvertebrate community structure are reported for a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant in South San Francisco...
