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Page 4945, results 123601 - 123625

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Not all publications have extents, not all extents are completely accurate
Variations in climatic characteristics as related to evapotranspiration in South Park, central Park County, Colorado
Norman E. Spahr
1981, Water-Resources Investigations Report 80-86
Data collected from May through September in 1977, 1978, and 1979 at three stations were analyzed using an analysis of variance technique to determine variations in climatic characteristics in South Park, Colo. Knowledge of these climatic characteristics will aid in determining the amount of water that may be transferred from...
Assessment of the Santa Margarita Sandstone as a source of drinking water for the Scotts Valley area, Santa Cruz County, California
K. S. Muir
1981, Water-Resources Investigations Report 81-6
Scotts Valley, Calif., is a rural residential area with a rapidly expanding population. Its mediterranean-type climate yields an average annual rainfall of 40 inches. The Santa Margarita Sandstone is the principal aquifer in the area, supplying about 90 percent of all water for domestic purposes. Sources of recharge for the...
Streamflow characteristics of the Hudson Bay and Upper Missouri River Basins, Montana, through 1979
Ronald R. Shields, Melvin K. White
1981, Water-Resources Investigations Report 81-32
Statistical summaries of streamflow data for selected gaging stations are presented in this report to aid in appraising the hydrology of the Hudson Bay and upper Missouri River basins in Montana. Streamflow records are presented for 122 gaging stations for the period of record of each station. Streamflow-record collection in...
Hydrologic reconnaissance of the Beluga, Peters Creek, and Healy coal areas, Alaska
David R. Scully, Andrea P. Krumhardt, Donald R. Kernodle
1981, Water-Resources Investigations Report 81-56
The Beluga, Peters Creek, and Healy coal areas in Alaska were studied during 1975-78, with major emphasis on surface-water hydrology and water quality.In the Beluga coal area, mean annual discharge is estimated to range from 2.2 to 3.4 cubic feet per second per square mile of drainage area. The 7-day...
Preimpoundment water quality in the Tioga River Basin, Pennsylvania and New York
Janice R. Ward
1981, Water-Resources Investigations Report 81-1
The water quality in the Tioga River basin was studied from September 1973 to September 1978, prior to impoundment by the U.S. Army Corps of Engineers. Results of the investigation will be used in the operation of three reservoirs that were in the final stages of construction in late 1979. Annual...
Chemical quality of ground water in San Joaquin and part of Contra Costa Counties, California
Stephen K. Sorenson
1981, Water-Resources Investigations Report 81-26
Chemical water-quality conditions were investigated in San Joaquin and part of Contra Costa Counties by canvassing available wells and sampling water from 324 representative wells. Chemical water types varied, with 73 percent of the wells sampled containing either calcium-magnesium bicarbonate, or calcium-sodium bicarbonate type water. Substantial areas contain ground water...
Quality of surface water before implementation of a flood-control project in Chaska, Minnesota
L. H. Tornes
1981, Water-Resources Investigations Report 81-83
Samples were collected for 1 year from East Creek, Chaska Creek, and Courthouse Lake in Chaska, Minnesota, to determine the water quality before implementation of a flood-control project proposed by the U.S. Army Corps of Engineers. The creeks had similar water-quality characteristics. Data indicate that ground water may be the...
Erodibility of selected soils and estimates of sediment yields in the San Juan Basin, New Mexico
Rebecca M. Summer
1981, Water-Resources Investigations Report 81-44
Onsite rainfall-simulation experiments were conducted to derive field-erodibility indexes for rangeland soils and soils disturbed by mining in coal fields of northwestern New Mexico. Mean indexes on rangeland soils range from 0 grams (of detached soil) on dune soil to 121 grams on wash-transport zones. Mean field-erodibility-index values of soils...
Use of flow-duration curves to evaluate effects of urbanization on streamflow patterns on Long Island, New York
Keith R. Prince
1981, Water-Resources Investigations Report 80-114
Streamflow patterns on Long Island, N.Y., have been changing over the last three decades in response to eastward population growth and urbanization. Flow-duration curves for nine streams in Nassau and Suffolk Counties indicate that, during this time, streams in urbanized areas have had increased peak flows and decreased base flows,...
Water type and suitability of Oklahoma surface waters for public supply and irrigation; Part 2: Salt Fork Arkansas and Cimarron River basins through 1978
Jerry D. Stoner
1981, Water-Resources Investigations Report 81-39
Water-quality data in the Salt Fork Arkansas and Cimarron River basins within Oklahoma, through 1978, were examined for water type and suitability for public water supply and irrigation use. Of 76 stations with available data, 32 stations or 42 percent were considered to have sufficient data for analysis. The classification...
Polychlorinated biphenyl transport in the Hudson River, New York
John T. Turk, David E. Troutman
1981, Water-Resources Investigations Report 81-9
Polychlorinated biphenyls (PCB's) have been entering the Hudson River estuary since 1951. Concentration and loading of PCB 's in the river below Waterford, N.Y., are controlled at present by resuspension of sediments containing these substances; therefore , until the amount of PCB 's in the sediments is significantly lowered, reduction...
Relationship of water quality of Hudson River, New York, during peak discharges to geologic characteristics of contributing subbasins
John T. Turk, David E. Troutman
1981, Water-Resources Investigations Report 80-108
Water samples from two Hudson River floods in 1977--one originating mainly in shale subbasins that produce high sediment loads, the other in soil-poor, crystalline rock terrane that yields little sediment--were analyzed to evaluate the relationship of iron, manganese, lead, phosphorus, and polychlorinated biphenyls (PCB's) to suspended-sediment concentration. During the flood...
Water type and suitability of Oklahoma surface waters for public supply and irrigation; Part I, Arkansas river mainstem and Verdigris, Neosho, and Illinois river basins through 1978
Jerry D. Stoner
1981, Water-Resources Investigations Report 81-33
Water-quality data in the Arkansas River mainstem and the Verdigris, Neosho, and Illnois River basins are examined for water type and suitability for public water supply and for irrigation use. The classification of water type is based on the relation of the major ions -- calcium, magnesium, sodium, bicarbonate/carbonate, sulfate,...
Potentiometric surface of the Floridan Aquifer, St. Johns River Water Management District and vicinity, Florida, May 1981
George R. Schiner, Eugene C. Hayes
1981, Open-File Report 81-1052
This map presents the potentiometric surface of the Floridan aquifer in the St. Johns River Water Management District and vicinity for May 1981. The Floridan aquifer is the principal source of potable water in the area. Water-level measurements were made in approximately 1,000 wells and at several springs. The potentiometric...
Annual summary of ground-water conditions in Arizona, spring 1979 to spring 1980
Water Resources Division, U.S. Geological Survey
1981, Open-File Report 81-906
Withdrawal of ground water, about 4.0 million acre-feet in Arizona in 1979, is about 200,000 acre-feet less than the amount withdrawn in 1978. The withdrawals in 1978 and 1979 are the smallest since the mid-1950 's except in 1966. Nearly all the decrease was in the amount of ground water...