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Page 141, results 3501 - 3525

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The Upper Colorado River; National Water-Quality Assessment Program; surface-water-monitoring network
Norman E. Spahr, Nancy E. Driver, Verlin C. Stephens
1996, Fact Sheet 191-96
The U.S. Geological Survey began full implementation of the National Water-Quality Assessment (NAWQA) program in 1991. The long-term goals of the NAWQA program are to (1) describe current water-quality conditions for a large part of the Nation's freshwater streams, rivers, and aquifers; (2) describe how water quality is changing over...
The Importance of Reserve Growth to the Nation's Supply of Natural Gas
Water Resources Division, U.S. Geological Survey
1996, Fact Sheet 202-96
Experience shows that initial estimates of the size of newly discovered oil or gas fields are usually too low. As years pass, successive estimates of the ultimate recovery of fields tend to increase. The term "reserve growth" refers to the typical increases in estimated ultimate recovery that occur as oil...
Environmental behavior and fate of methyl tert-butyl ether (MTBE)
Paul J. Squillace, James F. Pankow, Nic E. Korte, John S. Zogorski
1996, Fact Sheet 203-96
When gasoline that has been oxygenated with methyl tert-butyl ether (MTBE) comes in contact with water, large amounts of MTBE can dissolve; at 25 degrees Celsius the water solubility of MTBE is about 5,000 milligrams per liter for a gasoline that is 10 percent MTBE by weight. In contrast, for...
Sediment and nutrient trapping efficiency of a constructed wetland near Delavan Lake, Wisconsin, 1993-1995
John F. Elder, Gerald L. Goddard
1996, Fact Sheet 232-96
Jackson Creek Wetland a 95-acre shallow prairie marsh containing three sediment retention ponds was constructed in 1992 to reduce sediment and nutrient in- flow to eutrophic Delavan Lake. The function of the wetland as a retention system for suspended sediments and nutrients (total and dissolved phosphorus, total ammonia plus organic...
Real-time streamflow conditions
David J. Graczyk, Warren A. Gebert
1996, Fact Sheet 190-96
Would you like to know streamflow conditions before you go fishing in Wisconsin or in more distant locations? Real-time streamflow data throughout Wisconsin and the United States are available on the Internet from the U.S. Geological Survey. You can see if the stream you are interested in fishing is high...
Review and evaluation of a model for simulating the natural hydrology of South Florida
Jerad D. Bales, Janice M. Fulford, Eric D. Swain
1996, Fact Sheet 180-96
The South Florida Ecosystem Program is an intergovernmental effort to re-establish and maintain the ecosystem of South Florida. One element of the restoration effort is the development of a firm scientific basis for making management decisions. The U.S. Geologcal Survey (USGS) is one of the agencies that provides this needed...
Airborne hunt for faults in the Portland-Vancouver area
Richard J. Blakely, Ray E. Wells, Thomas S. Yelin, Peter H. Stauffer, James W. Hendley II
1996, Fact Sheet 105-96
Geologic hazards in the Portland-Vancouver area include faults entirely hidden by river sediments, vegetation, and urban development. A recent aerial geophysical survey revealed patterns in the Earth's magnetic field that confirm the existence of a previously suspected fault running through Portland. It also indicated that this fault may pose a...
Radon in the fluvial aquifers of the White River Basin, Indiana, 1995
Joseph M. Fenelon, Rhett C. Moore
1996, Fact Sheet 1996–0124
Water samples collected in 1995 from 57 monitoring wells (48 shallow and 9 deep) in the fluvial aquifers of the White River Basin were analyzed for radon. Radon concentrations in the shallow wells ranged from 140 to 1,600 pCi/L (picocuries per liter); the median concentration was 420 pCi/L. In comparison,...
South Florida Ecosystem Program: Quantifying freshwater discharge for coastal hydraulic control structures in eastern Dade County, Florida
Amit Kapadia, Eric D. Swain
1996, Fact Sheet 123-96
The South Florida Ecosystem Restoration Program is an intergovernmental effort, involving a number of agencies, to reestablish and maintain the ecosystem of south Florida. One element of the restoration effort is the development of a firm scientific basis for resource decision making. The U.S. Geological Survey (USGS), one of the...
South Florida Ecosystem Program; gaging flows in northeastern Florida Bay
Eduardo Patino
1996, Fact Sheet 130-96
IntroductionThe South Florida Ecosystem Restoration Program is an intergovernmental effort, involving a number of agencies, to reestablish and maintain the ecosystem of south Florida. One element of the restoration effort is the development of a firm scientific basis for resource decision making. The U.S. Geological Survey (USGS), one of the...
Comparison of the South Florida natural system model with pre-canal Everglades hydrology estimated from historical sources
Christopher McVoy, Winifred A. Park, Jayantha Obeysekera
1996, Fact Sheet 187-96
Preservation and restoration of the remaining Everglades ecosystem is focussed on two aspects: improving upstream water quality and improving 'hydropatterns' - the timing, depth and flow of surface water. Restoration of hydropatterns requires knowledge of the original pre-canal drainage conditions as well as an understanding of the soil, topo-graphic, and...
Vegetation affects water movement in the Florida Everglades
Water Resources Division, U.S. Geological Survey
1996, Fact Sheet 147-96
IntroductionThe Florida Everglades is a vast, diverse wetland ecosystem characterized by small ground-surface slopes, slowly moving surface waters, and dense aquatic vegetation. Both submersed and emergent vegetation are found in sawgrass and cattail marshes, wet prairies, and sloughs. The south Florida ecosystem has been greatly altered during the last 100...