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Page 149, results 3701 - 3725

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Denver's urban ground-water quality: Nutrients, pesticides, and volatile organic compounds
Breton W. Bruce
1995, Fact Sheet 106-95
A recent study by the U.S. Geological Survey (USGS) under the National Water-Quality Assessment (NAWQA) program characterized the ground-water quality in a part of the Denver, Colorado, metropolitan area. The study provides an assessment of water-quality conditions in an alluvial aquifer that drains into the South Platte River. Thirty wells...
Are streams in agricultural and urban areas contaminated by pesticides?
R. A. Kimbrough
1995, Fact Sheet 104-95
To answer this question, a study of pesticides in streams in a small agricultural area and a small urban area in Colorado was conducted in 1993 by the U.S. Geological Survey (USGS) as part of the National Water-Quality Assessment (NAWQA) program. The results indicate that pesticides are present in streams,...
Potential-Field Geophysical Software for the PC
Water Resources Division, U.S. Geological Survey
1995, Fact Sheet 076-95
The computer programs of the Potential-Field Software Package run under the DOS operating system on IBM-compatible personal computers. They are used for the processing, display, and interpretation of potential-field geophysical data (gravity- and magnetic-field measurements) and other data sets that can be represented as grids or profiles. These programs have...
USGS global change research
Water Resources Division, U.S. Geological Survey
1995, Fact Sheet 162-95
The Earth's global environment--its interrelated climate, land, oceans, fresh water, atmospheric and ecological systems-has changed continually throughout Earth history. Human activities are having ever-increasing effects on these systems. Sustaining our environment as population and demands for resources increase requires a sound understanding of the causes and cycles of natural change...
United States Geological Survey, programs in Nevada
Water Resources Division, U.S. Geological Survey
1995, Fact Sheet 028-95
The U.S. Geological Survey (USGS) has been collecting and interpreting natural-resources data in Nevada for more than 100 years. This long-term commitment enables planners to manage better the resources of a State noted for paradoxes. Although Nevada is one of the most sparsely populated States in the Nation, it has...
Some bacteria are beneficial!
Peter B. McMahon
1995, Fact Sheet 102-95
Most people would agree that bacteria usually spell trouble where the quality of drinking water is con cerned. However, recent studies conducted by the U.S. Geological Survey (USGS) under the National Water-Quality Assessment (NAWQA) program have shown that some bacteria can improve the quality of water....