Near field receiving water monitoring of trace metals in clams (macoma balthica) and sediments near the Palo Alto Water Quality Control Plant in South San Francisco Bay, California: 2000
Edward Moon, Samuel N. Luoma, Daniel J. Cain, Michelle I. Hornberger, Carlos Primo C. David
2004, Open-File Report 2004-1213
Trace element concentrations were analyzed on samples of fine-grained sediments and clams (Macoma balthica) collected from a mudflat one kilometer south of the discharge of the Palo Alto Regional Water Quality Control Plant in South San Francisco Bay. This report serves as a continuation of the Near Field Receiving Water...
Simulation of Integrated Surface-Water/Ground-Water Flow and Salinity for a Coastal Wetland and Adjacent Estuary
Christian D. Langevin, Eric D. Swain, Wolfert Melinda A.
2004, Open-File Report 2004-1097
The SWIFT2D surface-water flow and transport code, which solves the St. Venant equations in two dimensions, was coupled with the SEAWAT variable-density ground-water code to represent hydrologic processes in coastal wetlands and adjacent estuaries. The integrated code was applied to the southern Everglades of Florida to quantify flow and salinity...
Delineation of Areas Contributing Water to the Dry Brook Public-Supply Well, South Hadley, Massachusetts
Stephen P. Garabedian, Janet Radway Stone
2004, Water-Resources Investigations Report 2003-4320
Areas contributing water to the Dry Brook public-supply well in South Hadley, Massachusetts, were delineated with a numerical ground-water-flow model that is based on geologic and hydrologic information for the confined sand and gravel aquifer pumped by the supply well. The study area is along the Connecticut River in central...
SutraGUI, a graphical-user interface for SUTRA, a model for ground-water flow with solute or energy transport
Richard B. Winston, Clifford I. Voss
2004, Open-File Report 2003-285
This report describes SutraGUI, a flexible graphical user-interface (GUI) that supports two-dimensional (2D) and three-dimensional (3D) simulation with the U.S. Geological Survey (USGS) SUTRA ground-water-flow and transport model (Voss and Provost, 2002). SutraGUI allows the user to create SUTRA ground-water models graphically. SutraGUI provides all of the graphical functionality required...
Geohydrology of the French Creek Basin and simulated effects of drought and ground-water withdrawals, Chester County, Pennsylvania
Ronald A. Sloto
2004, Water-Resources Investigations Report 2003-4263
This report describes the results of a study by the U.S. Geological Survey, in cooperation with the Delaware River Basin Commission, to develop a regional ground-water-flow model of the French Creek Basin in Chester County, Pa. The model was used to assist water-resource managers by illustrating the interconnection between ground-water...
Water resources data, Utah, water year 2003
J.R. Tibbetts, Michael Enright, Dale E. Wilberg
2004, Water Data Report UT-03-1
Water-resources data for the 2005 water year for Utah consist of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of ground water. This report contains discharge records for 165 gaging stations; stage and contents for...
Methods for the preparation and analysis of solids and suspended solids for methylmercury
John F. DeWild, Shane D. Olund, Mark L. Olson, Michael T. Tate
2004, Techniques and Methods 5-A7
This report presents the methods and method performance data for the determination of methylmercury concentrations in solids and suspended solids. Using the methods outlined here, the U.S. Geological Survey's Wisconsin District Mercury Laboratory can consistently detect methylmercury in solids and suspended solids at environmentally relevant concentrations. Solids can be analyzed...
Water resources data-Maine, water year 2003
G.J. Stewart, J. M. Caldwell, A.R. Cloutier
2004, Water Data Report ME-03-1
This volume of the annual hydrologic data report of Maine is one of a series of annual reports that document data gathered from the U.S. Geological Survey's surface- and ground-water data-collection networks in each State, Puerto Rico, and the Trust Territories. These records of streamflow, ground-water levels, and quality of...
Guidelines for surveying bankfull channel geometry and developing regional hydraulic-geometry relations for streams of New York State
Rocky O. Powell, Sarah J. Miller, Britt E. Westergard, Christiane I. Mulvihill, Barry P. Baldigo, Anne S. Gallagher, Richard R. Starr
2004, Open-File Report 2003-92
Many disturbed streams within New York State are being restored in an effort to provide bank and bed stability and thereby decrease sedimentation and erosion. Efforts to identify and provide accurate indicators for stable-channel characteristics for ungaged streams have been hampered by the lack of regional equations or relations that...
Methods for the preparation and analysis of solids and suspended solids for total mercury
Shane D. Olund, John F. DeWild, Mark L. Olson, Michael T. Tate
2004, Techniques and Methods 5-A8
The methods documented in this report are utilized by the Wisconsin District Mercury Lab for analysis of total mercury in solids (soils and sediments) and suspended solids (isolated on filters). Separate procedures are required for the different sample types. For solids, samples are prepared by room-temperature acid digestion and oxidation...
Physical stream habitat dynamics in Lower Bear Creek, northern Arkansas
Joanna M. Reuter, Robert B. Jacobson, Caroline M. Elliott
2003, Biological Science Report 2003-0002
We evaluated the roles of geomorphic and hydrologic dynamics in determining physical stream habitat in Bear Creek, a stream with a 239 km2 drainage basin in the Ozark Plateaus (Ozarks) in northern Arkansas. During a relatively wet 12-month monitoring period, the geomorphology of Bear Creek was altered by a...
Hydrology and simulation of ground-water flow in Kamas Valley, Summit County, Utah
L.E. Brooks, Bernard J. Stolp, L.E. Spangler
2003, Technical Publication 117
Kamas Valley, Utah, is located about 50 miles east of Salt Lake City and is undergoing residential development. The increasing number of wells and septic systems raised concerns of water managers and prompted this hydrologic study. About 350,000 acre-feet per year of surface water flows through Kamas Valley in the...
Phytoplankton fuels Delta food web
Alan D. Jassby, James E. Cloern, A. B. Muller-Solger
2003, California Agriculture (57) 104-109
Populations of certain fishes and invertebrates in the Sacramento-San Joaquin Delta have declined in abundance in recent decades and there is evidence that food supply is partly responsible. While many sources of organic matter in the Delta could be supporting fish populations indirectly through...
Variability of isotope and major ion chemistry in the Allequash Basin, Wisconsin
John F. Walker, Randall J. Hunt, Thomas D. Bullen, David P. Krabbenhoft, Carol Kendall
2003, Ground Water (41) 883-894
As part of ongoing research conducted at one of the U.S. Geological Survey's Water, Energy, and Biogeochem-ical Budgets sites, work was undertaken to describe the spatial and temporal variability of stream and ground water isotopic composition and cation chemistry in the Trout Lake watershed, to relate the variability to the...
A proposed international watershed research network
W. R. Osterkamp, J. R. Gray
2003, Conference Paper, First Interagency Conference on Research in the Watersheds: October 27-30, 2003
An “International Watershed Research Network” is to be an initial project of the Sino-U. S. Centers for Soil and Water Conservation and Environmental Protection. The Network will provide a fundamental database for research personnel of the Centers, as well as of the global research community, and is viewed as an...
Synergy of agroforestry and bottomland hardwood afforestation
D.J. Twedt, J. Portwood
Terry R. Clason, editor(s)
2003, Book chapter, Land-use management for the future: proceedings of the 6th North American Agroforestry Conference, June 12-16, 1999, the Arlington Resort Hotel and Spa, Hot Springs, Arkansas
Afforestation of bottomland hardwood forests has historically emphasized planting heavy-seeded tree species such as oak (Quercus spp.) and pecan (Caryaillinoensis) with little or no silvicultural management during stand development. Slow growth of these tree species, herbivory, competing vegetation, and limited seed dispersal, often result in restored sites that are...
Coupling ice-sheet and climate models for simulation of former ice sheets
Shawn J. Marshall, David Pollard, Steven W. Hostetler, Peter U. Clark
2003, Developments in Quaternary Sciences (1) 105-126
This chapter explores the development of coupled climate and ice-sheet models over the past two decades, discusses the current technical and physical capabilities of models, and identifies future work for developing a better understanding of ice-climate events that have punctuated Earth history. The chapter also illustrates the complex behavior of...
Summary of synoptic sampling and tracer-injection tests in the Alamosa River Basin during low-flow conditions, October 1998: A sampling analysis report for modeling reactive transport of metals for the Summitville Mine, Colorado
Roderick F. Ortiz, James W. Ball
2003, Open-File Report 2003-466
No abstract available....
Summary of synoptic sampling and tracer-injection tests in the Alamosa River basin during high-flow conditions, June 1999: A sampling analysis report for modeling reactive transport of metals for the Summitville Mine, Colorado
Roderick F. Ortiz, James W. Ball
2003, Open-File Report 2003-467
No abstract available....
Geohydrology of the Valley-Fill aquifer in the Norwich-Oxford-Brisben area, Chenango County, New York
Kari K. Hetcher, Todd S. Miller, James D. Garry, Richard J. Reynolds
2003, Open-File Report 2003-242
This set of maps and geohydrologic sections depicts the geology and hydrology of aquifers in the 21.9-square-mile reach of the Chenango River valley between Brisben and North Norwich, N.Y. This report depicts the principal geographic features of the study area; locations of domestic, commercial, and municipal wells from which data...
Mercury in stream ecosystems -- New studies initiated by the U.S. Geological Survey
Mark E. Brigham, David P. Krabbenhoft, Pixie A. Hamilton
2003, Fact Sheet 016-03
Mercury can adversely affect humans and wildlife through consumption of contaminated fish, particularly by sensitive individuals, such as children and women of childbearing age. Mercury is currently the leading cause of impairment in the Nation’s estuaries and lakes and was cited in nearly 80 percent of fish-consumption advisories (2,242 of...
New studies initiated by the U.S. Geological Survey - Effects of nutrient enrichment on stream ecosystems
Mark D. Munn, Pixie A. Hamilton
2003, Fact Sheet 118-03
In 2001, the U.S. Geological Survey’s National Water-Quality Assessment (NAWQA) Program began an intensive study of nutrient enrichment elevated concentrations of nitrogen and phosphorus in streams in five agricultural basins across the Nation (see map, p. 2). This study is providing nationally consistent and comparable data and analyses of nutrient...
Water resources of Monroe County, New York, water years 1997-99, with emphasis on water quality in the Irondequoit Creek basin—Atmospheric deposition, ground water, streamflow, trends in water quality, and chemical loads to Irondequoit Bay
Donald A. Sherwood
2003, Water-Resources Investigations Report 2002-4221
Irondequoit Creek drains 169 square miles in the eastern part of Monroe County. Over time, nutrients transported by Irondequoit Creek to Irondequoit Bay on Lake Ontario have contributed to the eutrophication of the bay. Sewage-treatment-plant effluent, a major source of nutrients to the creek and its tributaries, was eliminated from...
Natural weathering rates of silicate minerals
A. F. White
Heinrich Holland, K. Turekian, editor(s)
2003, Book chapter, Treatise on geochemistry
No abstract available. ...
Geochemistry of groundwater
Christina M. Aiello
2003, Book chapter, Treatise on geochemistry
No abstract available. ...
