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Page 509, results 12701 - 12725

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National water summary 1985: Hydrologic events and surface-water resources
United States Geological Survey
1986, Water Supply Paper 2300
The surface-water resources of the United States, the focal point for this National Water Summary, are extensively developed and managed to provide water supplies, hydroelectric power, navigation, recreational opportunities, and sufficient instream flows to maintain fish and wildlife habitats and adequate water quality. Surface water represents 77 percent of the...
Annual summary of ground-water conditions in Arizona, spring 1984 to spring 1985
Water Resources Division, U.S. Geological Survey
1986, Open-File Report 86-422-W
In arid and semiarid regions such as Arizona, the availability of adequate water supplies has a significant influence on the type and extent of economic development. About two-thirds of the water used in the State is groundwater. The nature and extent of the groundwater reservoirs must be known for proper...
Delineating recharge areas for stratified-drift aquifers in Connecticut with geologic and topographic maps
E. H. Handman
1986, Water-Resources Investigations Report 83-4230
Stratified-drift aquifers, the major source of large quantities of groundwater in Connecticut, are recharged principally by (1) precipitation that infiltrates the land surface overlying the aquifer and percolates downward to the saturated zone, (2) subsurface inflow of groundwater from adjacent till-and-bedrock uplands, and (3) surface water that infiltrates through streambed...
Ground-water levels in the Great Basin region of Nevada, Utah, and adjacent states
James M. Thomas, James L. Mason, James D. Crabtree
1986, Hydrologic Atlas 694-B
The Great Basin Regional Aquifer-System Analysis (RASA) is the tenth study in a national program b the U.S. Geological Survey to analyze regional ground-water systems that comprise a major part of the Nation’s water supply. The main objectives of RASA studies are to: (1) Describe the ground-water systems as they...
Irrigated acreage and other land uses on the Snake River Plain, Idaho and eastern Oregon
Gerald F. Lindholm, S. A. Goodell
1986, Hydrologic Atlas 691
Prompted by the need for a current, accurate, and repeatable delineation of irrigated acreage on the Snake River Plain, the U.S. Geological Survey entered into a cooperative agreement with the Idaho Department of Water Resources Image Analysis Facility and the U.S. Bureau of Reclamation to delineate 1980 land use form...
Hydrogeologic framework and properties of regional aquifers in the Hollandale Embayment, southeastern Minnesota
D. G. Woodward
1986, Hydrologic Atlas 677
In 1977, the U.S. Geological Survey began a series of investigations of regional aquifer systems in the United States. These studies will provide quantitative information for use in developing and managing regional ground-water supplies. One of these studies, the Northern Midwest Regional Aquifer-System Analysis (RASA) project, concerns the Cambrian and...
Hydrologic characteristics of soils in parts of Arkansas, Colorado, Kansas, Missouri, Nebraska, New Mexico, Oklahoma, South Dakota, and Texas
Jack T. Dugan
1986, Hydrologic Atlas 678
Certain physical characteristics of soils, including permeability, available water capacity, thickness, and topographic position, have a definite effect on the hydrology of an area. They control the rate at which precipitation infiltrates or is transmitted through the soil, and thus they have a significant role in determining the rates both...
Geologic, hydrologic, and cultural factors in the selection of sites for the land disposal of wastes in Washington
N. P. Dion, R. C. Alvord, T.D. Olson
1986, Water-Resources Investigations Report 84-4279
As part of a program to deal with the problems of waste disposal in Washington, the Department of Ecology (WDOE), in cooperation with the U.S. Geological Survey, completed a study designed to provide the geologic, hydrologic, and cultural data needed to evaluate the suitability of State land areas for the...
Ground-water hydrology and subsurface migration of radionuclides at a commercial radioactive-waste burial site, West Valley, Cattaraugus County, New York
David E. Prudic
1986, Professional Paper 1325
Low-level radioactive wastes were buried from 1963-75 in trenches excavated in a clay-rich till about 28 meters thick. Beneath the till is a lacustrine sequence that is unsaturated in its upper part and acts as a drain to the till. The till is nearly isotropic; hydraulic conductivity ranges between 2...
Analysis of fixed-station water-quality data in the Umpqua River basin, Oregon
J. F. Rinella
1986, Water-Resources Investigations Report 85-4253
An appraisal of surface water quality in the Umpqua River basin was made using existing monthly data collected by the Oregon Department of Environmental Quality and the U.S. Geological Survey in cooperation with the Douglas County Water Resources Survey. This appraisal was limited to interpretation of instantaneous monthly water quality...
Hydrologic and climatologic factors affecting water levels of Devils Lake, North Dakota
Gregg J. Wiche
1986, Water-Resources Investigations Report 86-4320
High water levels of Devils Lake, North Dakota, and other terminal lakes, have, in recent years, threatened highways, agricultural land, recreational cabins, and communities located near these lakes. This study was undertaken to describe the hydrology of the Devils Lake basin and to determine how to estimate future water level...
Hydrologic and geologic analysis of two wells in Marion County, South Carolina
M.S. Reid, R.A. Renken, R. L. Wait, W. R. Aucott, R. W. Lee
1986, Water-Resources Investigations Report 86-4102
Two test wells were drilled in Marion County, South Carolina in 1982. Well MRN 77 (Marion 77) was drilled to a depth of 365 ft and was used as an observation well in the Black Creek aquifer and to supply water during drilling of the deeper well. MRN 78 (Marion...
Brine contamination of shallow ground water and streams in the Brookhaven Oil Field, Lincoln County, Mississippi
S. J. Kalkhoff
1986, Water-Resources Investigations Report 86-4087
A hydrologic investigation to define areas of brine contamination in shallow freshwater aquifers commonly used for streams that drain the Brookhaven Oil Field, was conducted from October 1983 to September 1984. The Brookhaven Oil Field covers approximately 15 sq mi in northwestern Lincoln County, Mississippi. Since 1943, disposal of approximately...
Methods for estimating magnitude and frequency of floods in Montana based on data through 1983
R. J. Omang, Charles Parrett, J. A. Hull
1986, Water-Resources Investigations Report 86-4027
Equations are presented for estimating flood magnitudes for ungaged sites in Montana based on data through 1983. The State was divided into eight regions based on hydrologic conditions, and separate multiple-regression equations were developed for each region. These equations relate annual flood magnitudes and frequencies to basin characteristics and are...