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Not all publications have extents, not all extents are completely accurate
Occurrence of pesticides in ground water in the White River Basin, Indiana, 1994–95
Joseph M. Fenelon, Rhett C. Moore
1996, Fact Sheet 1996–0084
Pesticides (herbicides and insecticides) are used extensively in the White River Basin. Application of herbicides to corn and soybeans accounts for most of the use. The U.S. Geological Survey collected samples from four networks of monitoring wells in the White River Basin during 1994-95. The most frequently detected compounds in...
Hydrology and water quality of Park Lake, south-central Wisconsin
P.A. Kammerer
1996, Fact Sheet 197-96
Park Lake extends to the northeast from the village of Pardeeville in Columbia County (fig. 1). Local residents perceive water-quality problems in the lake that include excessive algae and aquatic plant growth. Algae and plant growth in a lake are controlled, in part, by the availability of phosphorus in the...
Quality of ground water at selected sites in the upper Mahoning Creek Basin, Pennsylvania
Michael J. Langland
1996, Fact Sheet 176-96
The ground-water quality of the upper Mahoning Creek Basin is largely unknown. Human activities in the basin have altered much of the landscape. The presence of coal mining, oil and gas exploration, agriculture, on-lot septic systems, and commercial development within the basin can introduce contaminants altering the natural chemistry of...
Study design and preliminary data analysis for a streambank fencing project in the Mill Creek Basin, Pennsylvania
Daniel G. Galeone, Edward H. Koerkle
1996, Fact Sheet 193-96
The Pequea Creek and Mill Creek Basins within Lancaster and Chester Counties in Pennsylvania have been identified as areas needing control of nonpoint-source (NFS) pollution to improve water quality. The two basins are a total of approximately 200 square miles and are primarily underlain by carbonate bedrock. Land use is...
Pesticides in urban and agricultural streams, 1993-95
Larry F. Land
1996, Fact Sheet 178-96
Nonpoint sources of pesticides are a national issue and are a major interest in the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program because of their potential toxicity to humans and aquatic life. Using the water-quality data collected by the Trinity River Basin NAWQA study-unit team, an analysis of pesticides...
Water-quality trends using sediment cores from White Rock Lake, Dallas, Texas
Peter C. Van Metre, Larry F. Land, C.L. Braun
1996, Fact Sheet 217-96
The U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program has three objectives, one of which is "to define trends (or lack of trends) in water quality" (Leahy and others, 1990). Water-quality trends are of interest for at least three reasons: First, trends can improve our understanding of the influence of...
Precipitation and streamflow conditions in Arizona, winter and spring, 1996
Owen R. Baynham, Jeff V. Phillips
1996, Fact Sheet 223-96
According to precipitation and streamflow data collected in the State, Arizona experienced one of the driest periods on record from January 1 to June 30, 1996. During this period, Arizona averaged less than -4.5 on the Palmer Drought Index (PDI); a widely used index that compares monthly rainfall to soil...
Pesticides in streams of the western Lake Michigan drainages, Wisconsin and Michigan, 1993-95
Daniel J. Sullivan, Kevin D. Richards
1996, Fact Sheet 107-96
During 1993-95, water samples were collected at nine sites on eight streams in the Western Lake Michigan Drainages to attempt to determine pesticide concentrations. The sampling effort was part of the U.S. Geological Survey's National Water- Quality Assessment (NAWQA) Program. Pesticides analyzed for were 58 herbicides and 30 insecticides. Pesticides...
Regional evaluation of evapotranspiration in the Everglades
Edward R. German
1996, Fact Sheet 168-96
Understanding the water budget of the Everglades system is crucial to the success of restoration and management strategies. Although the water budget is simple in concept, it is difficult to assess quantitatively. Models used to simulate changes in water levels and vegetation resulting from management strategies need to accurately simulate...
Mercury and periphyton in the south Florida ecosystem
Water Resources Division, U.S. Geological Survey
1996, Fact Sheet 184-96
BackgroundAdvisories warning against the eating of game fish due to high concentrations (0.5 to 1.5 parts per million) of mercury are common in areas of Florida. When concentrations of mercury in fish are reported, it is primarily the compound methylmercury (MeHg), a neurotoxin, that is assumed present. MeHg has caused...
Using geochemical and statistical tools to identify irrigated areas that might contain high selenium concentrations in surface water
David L. Naftz
1996, Fact Sheet 077-96
Irrigated agriculture has a long history in the Western United States, beginning with Native American Indians. After passage of the Reclamation Act of 1902, the United States Government began building and subsidizing irrigation projects to foster settlement and development of the arid and semi-arid areas of the Western United States...