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Leetown Science Center
Water Resources Division, U.S. Geological Survey
2003, Report
The Leetown Science Center conducts research to provide information needed to restore, enhance, maintain, and protect fish and other important aquatic and terrestrial organisms and their supporting ecosystems....
Effects of West Nile Virus
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 2004-3002
USGS scientists are embarking on bold new research to better understand the consequences this disease may have on wildlife and human health....
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...
Measuring human-induced land subsidence from space
Gerald W. Bawden, Michelle Sneed, Sylvia V. Stork, Devin L. Galloway
2003, Fact Sheet 069-03
Satellite Interferometric Synthetic Aperture Radar (InSAR) is a revolutionary technique that allows scientists to measure and map changes on the Earth's surface as small as a few millimeters. By bouncing radar signals off the ground surface from the same point in space but at different times, the radar satellite can...
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...
Availability of ground-water data for California, water year 2002
Julia A. Huff
2003, Fact Sheet 074-03
The U.S. Geological Survey, Water Resources, in cooperation with Federal, State, and local agencies, obtains a large amount of data pertaining to the ground-water resources of California each water year (October 1?September 30). These data constitute a valuable database for developing an improved understanding of the water resources of the...
Data summary and loading sources for selected water-quality characteristics of streams in blowdown areas, North Fork Elk River Watershed, Colorado, March 1999-August 2000
Kenneth J. Leib, Paul Von Guerard
2003, Fact Sheet 127-02
On October 25, 1997, in and around the Routt National Forest and the Mount Zirkel Wilderness Area, a winter snowstorm occurred in conjunction with heavy winds that resulted in the destruction of thousands of acres of old-growth tree stands. The U.S. Geological Survey, in cooperation with the U.S. Forest Service,...
Selenium contamination and remediation at Stewart Lake Waterfowl Management Area and Ashley Creek, middle Green River basin, Utah
Ryan C. Rowland, Doyle W. Stephens, Bruce Waddell, David L. Naftz
2003, Fact Sheet 031-03
Selenium is an element required in trace amounts for human and animal health, but it can cause health problems for livestock, wildlife, and humans when ingested in higher-than-required concentrations. Incidences of mortality, birth defects, and reproductive failure in waterfowl were discovered at Kesterson National Wildlife Refuge, San Joaquin Valley, California,...
The Great Flood of 1993 on the Upper Mississippi River—10 years later
Gary P. Johnson, Robert R. Holmes Jr., Loyd A. Waite
2003, Fact Sheet 2004-3024
Ten years ago, the upper Mississippi River Basin in the Midwestern United States experienced the costliest flood in the history of the United States. The flood came to be known as “ The Great Flood of 1993.”...
Applying indicators of hydrologic alteration to Texas streams: overview of methods with examples from the Trinity River basin
Richard L. Kiesling
2003, Fact Sheet 128-03
Streamflow is a component of aquatic ecosystem health, and long-term alteration of streamflow characteristics can produce large changes in aquatic ecosystem structure and function. The physical, chemical, and biological properties of aquatic ecosystems are all affected by the magnitude and frequency of streamflow. For example, the physical structure (hydrogeomorphology) of...
U.S. Geological Survey World Wide Web Information
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 055-03
The U.S. Geological Survey (USGS) invites you to explore an earth science virtual library of digital information, publications, and data. The USGS World Wide Web sites offer an array of information that reflects scientific research and monitoring programs conducted in the areas of natural hazards, environmental resources, and cartography. This...
Hazards, Disasters, and The National Map
Water Resources Division, U.S. Geological Survey
2003, Fact Sheet 027-03
Governments depend on base geographic information that describes the Earth's surface and locates features. They use this information for economic and community development, land and natural resource management, delivery of health services, and ensuring public safety. It is also the foundation for studying and solving geographically based problems. Geographic information...