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Page 4139, results 103451 - 103475

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Hydrogeology of the southwestern part of the town of Hempstead, Nassau County, New York
Richard K. Krulikas
1989, Water-Resources Investigations Report 85-4288
The groundwater resources of the southwestern part of the Town of Hempstead in Nassau County, NY were investigated in 1984. The area studied encompasses 85 sq mi, or 68% of the town 's 125-sq mi area. The groundwater reservoir underlying the area consists of unconsolidated gravel, sand, silt, and clay...
Tectonically controlled fan delta and submarine fan sedimentation of late Miocene age, southern Temblor Range, California
Robert T. Ryder, Alan Thomson
1989, Professional Paper 1442
The Santa Margarita Formation in the southern Temblor Range, composed of conglomerate and subordinate sandstone, evolved as a large complex of fan deltas and submarine fans in late Miocene time. An 80 to 90-m.y.-old granitic basement of the Salinian block and an accompanying 23.5-m.y.-old volcanic field now located in the...
Ground-water levels, water quality, and potential effects of toxic-substance spills or cessation of quarry dewatering near a municipal ground-water supply, southern Franklin County, Ohio
A. C. Sedam, S. M. Eberts, E. Scott Bair
1989, Water-Resources Investigations Report 88-4138
A newly completed municipal ground-water supply that produces from a sand and gravel aquifer in southern Franklin County, Ohio, may be susceptible to potential sources of pollution. Among these are spills of toxic substances that could enter recharge areas of the aquifer or be carried by surface drainage and subsequently...
Water-resources activities in Florida, 1988-89
M.E. Glenn, editor(s)
1989, Open-File Report 89-227
This report contains summary statements of water resources activities in Florida conducted by the Water Resources Division of the U.S. Geological Survey in cooperation with Federal, State , and local agencies during 1988. These activities are part of the Federal program of appraising the Nation 's water resources. Included are...
Natural ground-water quality in Michigan, 1974-87
T. Ray Cummings
1989, Open-File Report 89-259
Wide variations occur in the chemical and physical characteristics of natural groundwaters in Michigan. Dissolved-solids concentrations range from 20 to 76,000 mg/L. Waters having low dissolved-solids concentrations are calcium bicarbonate-type waters. Sodium, sulfate, and chloride increase as mineralization increases. Iron, aluminum, and titanium concentrations are higher at some locations than...
Ground-water level data for North Carolina, 1987
Ronald W. Coble, A.G. Strickland, M. Carl Bailey
1989, Open-File Report 89-68
Continuous and periodic measurements in 54 key wells and water-level measurements emplaced in Coastal Plain aquifers across North Carolina in 193 supplemental wells are presented in this report. Hydrographs of selected wells show changes in ground-water storage in the State. The water table in the shallow aquifers was higher throughout...
Hydrogeology of the western part of the Salt River Valley area, Maricopa County, Arizona
James G. Brown, D. R. Pool
1989, Water-Resources Investigations Report 88-4202
The Salt River Valley is a major population and agricultural center of more than 3,000 mi2 in central Arizona (fig. 1). The western part of the Salt River Valley area (area of this report) covers about 1,500 mi2. The Phoenix metropolitan area with a population of more than 1.6 million...