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Publication Extents

Not all publications have extents, not all extents are completely accurate
The relation of fish community composition to riparian cover and runoff potential in the Minnesota River basin, Minnesota and Iowa, 1997
Paul E. Hanson
2000, Fact Sheet 105-00
The relation of fish community composition to riparian cover and runoff potential was investigated in 20 streams in the Minnesota River Basin during the summer of 1997 as part of the U.S. Geological Survey’s National Water-Quality Assessment (NAWQA) Program (fig.1). Analysis of variance statistics indicated significant differences in the composition...
Investigation of the geology and hydrology of the Mogollon Highlands of central Arizona: a project of the Arizona Rural Watershed Initiative
John T.C. Parker, Marilyn E. Flynn
2000, Fact Sheet 159-00
The Mogollon Highlands of east central Arizona is a region of forested plateau and mountains, deep, sheerwalled canyons, and desert valleys. Known for its scenic beauty and characterized by a generally mild climate, the area, though still sparsely populated, attracts an increasing number of tourists and summer residents. Furthermore, the...
Land-subsidence and ground-water storage monitoring in the Tucson Active Management Area, Arizona
Don R. Pool, Daniel Winster, K. C. Cole
2000, Fact Sheet 084-00
The Tucson Active Management Area (TAMA) comprises two basins--Tucson Basin and Avra Valley. The TAMA has been directed by Arizona ground-water law to attain an annual balance between groundwater withdrawals and recharge by the year 2025. This balance is defined by the statute as "safe yield." Current ground-water withdrawals exceed...
Monitoring surface-water quality in Arizona: the fixed-station network
Saeid Tadayon
2000, Fact Sheet 028-00
Arizona is an arid State in which economic development is influenced largely by the quantity and quality of water and the location of adequate water supplies. In 1995, surface water supplied about 58 percent of total withdrawals in Arizona. Of the total amount of surface water used in 1995, about...
Nitrate concentrations in ground water in the Henrys Fork Basin, eastern Idaho
D. J. Parliman
2000, Fact Sheet 029-00
In 1998 and 1999, the U.S. Geological Survey (USGS) completed comprehensive studies of nitrate concentrations in ground water in the Henrys Fork Basin in eastern Idaho (fig. 1A). These studies were done in cooperation with the following agencies or groups: Idaho Division of Environmental Quality (DEQ), District 7 Health Department,...
Seagrasses in northern Gulf of Mexico: An ecosystem in trouble
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 017-00
The USGS National Wetlands Research Center has documented that Seagrasses in the northern Gulf of Mexico constitute an ecosystem in trouble. From studies in St. Andrews Bay, Period Bay, the Chandeleur Islands, and the Gulf Islands National Seashore, scientists have discovered that declining seagrass acreage ranges from 12% to 66%...
Coastal Prairie
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 019-00
The coastal prairie, located along the coastal plain of southwestern Louisiana and southcentral Texas, is the southernmost tip of the tallgrass prairie ecosystem so prevalent in the Midwest. The coastal prairie ecosystem once covered as much as 3.8 million ha (9 million acres); today, more than 99% of this land...
Monitoring The Water Quality of the Nation's Large Rivers Colorado River NASQAN Program
Robert J. Hart, Richard P. Hooper
2000, Fact Sheet 014-00
Since 1995, the National Stream Quality Accounting Network (NASQAN) of the U. S. Geological Survey (USGS) has focused on monitoring the water quality of the Nation's largest rivers including the Colorado, Columbia, Mississippi, and Rio Grande. The NASQAN program in the Colorado River Basin consists of eight stations that span...
Water Flows in the Necedah National Wildlife Refuge
Randall J. Hunt, David J. Graczyk, William J. Rose
2000, Fact Sheet 068-00
The Necedah National Wildlife Refuge (NNWR), in Juneau County, Wisconsin (fig. 1). contains extensive wetlands areas commonly recog- nized as providing habitat and protection for migratory birds and endangered species. Because of concerns with potential changes to the water resources that supply the Refuge, the U.S. Fish and Wildlife...
Fire ecology in the southeastern United States
USGS National Wetlands Research Center
2000, Fact Sheet 018-00
Fire has played an important role in the structure of natural ecosystems throughout North America. As a natural process, fire helps clear away dead and dying plant matter and increases the production of native species that occur in fire prone habitats. It also reduces the invasion of exotic species and...
Louisiana coastal ecosystem
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 015-00
Louisiana's coast and its degradation and restoration are major environmental issues being studied at the National Wetlands Research Center. Coastal ecosystems are vulnerable because of the tremendous amount of human activity that takes place along the coast. Information on ecological processes is essential to guide the development along the coast...
Chinese tallow: Invading the southeastern Coastal Plain
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 154-00
Chinese tallow is an ornamental tree with colorful autumn foliage that can survive full sunlight and shade, flooding, drought, and in some cases fire. To horticulturists this kind of tree sounds like a dream, but to ecologists, land managers, and land owners this kind of tree can be a nightmare,...
Research in rice fields
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 021-00
Between 1987 and 1999, 2.4-3 million acres of rice were planted annually nationwide. Rice fields are a major component of the contemporary landscapes in the Gulf Coastal Plain, the Mississippi Alluvial Valley, and Central Valley of California. In 1998, approximately 600,000 acres of rice were planted in Louisiana. In the...
Reconstructing historical changes in the environmental health of watersheds by using sediment cores from lakes and reservoirs in Salt Lake Valley, Utah
David L. Naftz, Doyle W. Stephens, Edward Callender, Peter C. Van Metre
2000, Fact Sheet 164-00
The Great Salt Lake Basins study area of the National Water-Quality Assessment (NAWQA) program, which began in 1997, is increasing the scientific understanding of factors that affect surface-water quality within the study-area boundaries (fig. 1). One way to improve the understanding of these factors is to look at historical trends...
Arsenic in ground water in Shiawassee County, Michigan
Sheridan K. Haack, Cynthia M. Rachol
2000, Fact Sheet 131-00
Previous studies of ground-water resources in Michigan by the Michigan Department of Community Health (MDCH), the Michigan Department of Environmental Quality (MDEQ), and the U.S. Geological Survey (USGS) indicate that in several counties in the southeastern part of the State the concentrations of arsenic in ground water may exceed the...
Arsenic in ground water in Tuscola County, Michigan
Sheridan K. Haack, Cynthia M. Rachol
2000, Fact Sheet 133-00
Previous studies of ground-water resources in Michigan by the Michigan Department of Community Health (MDCH), the Michigan Department of Environmental Quality (MDEQ), and the U.S. Geological Survey (USGS) indicate that in several counties in the southeastern part of the State the concentrations of arsenic in ground water may exceed the...