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Page 5276, results 131876 - 131900

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Hydrologic data-verification management program plan
C.W. Alexander
1982, Open-File Report 82-374
Data verification refers to the performance of quality control on hydrologic data that have been retrieved from the field and are being prepared for dissemination to water-data users. Water-data users now have access to computerized data files containing unpublished, unverified hydrologic data. Therefore, it is necessary to develop techniques and...
Geohydrology of the Standing Rock Indian Reservation, North and South Dakota
Lewis W. Howells
1982, Hydrologic Atlas 644
Effective improvement of economic and social conditions of Indians living on the Standing Rock Indian Reservation has been hampered by lack of adequate and reliable information about the quantity and quality of water supplies available for development.  Compounding the problem is the recent filling of Oahe Reservoir (now Lake Oahe),...
Streamflow and sediment transport in the Quillayute River basin, Washington
L. M. Nelson
1982, Open-File Report 82-627
From October 1976 to September 1978 the U.S. Geological Survey made a reconnaissance evaluation of the fluvial-sediment transport and documented the natural streamflow characteristics in the Quillayute River basin in northwestern Washington. Most of the flow originates from the tributaries, the Soleduck, Bogachiel, and Calawah Rivers. Flow in the summer...
A heat-pulse flowmeter for measuring minimal discharge rates in boreholes
A.E. Hess
1982, Open-File Report 82-699
The U.S. Geological Survey has tested a borehole-configured heat-pulse flowmeter which has good low-velocity flow-measuring sensitivity. The flowmeter was tested in the laboratory in 51-, 102-, and 152-millimeter-diameter columns using water velocities ranging from 0.35 to 250 millimeters per second. The heat-pulse flowmeter also was tested in a 15-meter-deep granite...
Modifications and corrections to the finite-difference model for simulation of three-dimensional ground-water flow
L.J. Torak
1982, Water-Resources Investigations Report 82-4025
This report describes modifications incorporated into the finite-difference model for simulation of groundwater flow in three dimensions. These modifications extend the application of this model to simulations involving head-dependent sources and sinks (i.e., rivers, evapotranspiration, and springs or drains). Other modifications are made that enhance the iterative-solution process of the...
Water quality of coal deposits and abandoned mines, Saginaw County, Michigan
A.H. Handy
1982, Open-File Report 82-511
Surface water arid;ground water from an area underlain by coal- bearing rocks in the vicinity of St. Charles Michigan, were analyzed to determine the quality characteristics of these water resources and to assess the relation between the two. Data for 15 constituents, including boron, phenol, lithium, strontium and manganese, were...
Vertical movement of ground water under the Merrill Field landfill, Anchorage, Alaska
Gordon L. Nelson, L.L. Dearborn
1982, Open-File Report 82-1016
Shallow groundwater under the Merrill Field sanitary landfill at Anchorage is polluted by leachate. Wells, including three Municipal-supply wells, obtain water from two confined aquifers 100-300 feet beneath the landfill area. Aquifer-test data and information on subsurface geology, ground-water levels, and properties of materials were used to estimate vertical gradients...
Downstream effects of reservoir releases to the Potomac River from Luke, Maryland, to Washington, D.C.
T. J. Trombley
1982, Water-Resources Investigations Report 82-4062
A digital computer flow-routing model was developed for the Potomac River in order to determine the downstream effects of flow releases from the Bloomington and Savage River Reservoirs. Both reservoirs are located above Luke, Maryland approximately 230 miles upstream from Washington, D. C. The downstream effects of reservoir releases were...
Digital classification of Landsat data for vegetation and land-cover mapping in the Blackfoot River watershed, southeastern Idaho
L. R. Pettinger
1982, Professional Paper 1219
This paper documents the procedures, results, and final products of a digital analysis of Landsat data used to produce a vegetation and landcover map of the Blackfoot River watershed in southeastern Idaho. Resource classes were identified at two levels of detail: generalized Level I classes (for example, forest land and...