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Page 5568, results 139176 - 139200

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Thermal modeling of flow in the San Diego Aqueduct, California, and its relation to evaporation
Harvey E. Jobson
1980, Professional Paper 1122
The thermal balance of the 26-kilometer long concrete-lined San Diego Aqueduct, a canal in southern California, was studied to determine the coefficients in a Dalton type evaporation formula. Meteorologic and hydraulic variables, as well as water temperature, were monitored continuously for a 1-year period. A thermal model was calibrated by...
Geophysical-geological analysis of Fairfax County, Virginia
David L. Daniels
1980, Open-File Report 80-1165
Aeromagnetic, aeroradioactivity, and gravity surveys of Fairfax County, Virginia, are interpreted with the aid of existing geologic data and local geophysical measurements. Highly magnetic metasedimentary rocks of the Peters Creek Schist and Sykesville Formation produce most of the magnetic anomalies of Fairfax County. In contrast, the granitoid rocks of the...
A systematic revision of the ostracode species described by Ulrich and Bassler and by Malkin from the Chesapeake Group in Maryland and Virginia
Richard M. Forester
1980, Professional Paper 1128
Those ostracode species described by Ulrich and Bassler (1904) and Malkin (1953) from the Chesapeake Group of early Miocene to early Pleistocene age are treated systematically. Lectotypes are designated for all species which have syntypic suites and the lectotypes, holotypes, or hypotypes for all but two species are illustrated. A...
Bibliography of geology and hydrology, southwestern New Mexico
Ann Finley Wright
1980, Water-Resources Investigations Report 80-20
The southwestern part of New Mexico is recognized as a source of abundant and varied natural resources. This bibliography of over 2,700 references concerned with geology, hydrology, chemistry, and geography has been compiled to assist physical science researchers in their study and development of this region....
Cross sections of the Hudson River estuary from Troy to New York City, New York
D.A. Stedfast
1980, Water-Resources Investigations Report 80-24
Data on channel geometry of the Hudson River estuary at 125 cross sections between the Federal Dam at Troy and the norhtern limits of New York City (133 miles) are presented for use in hydraulic modeling, tidal studies, traveltime and water-quality studies, and other uses requiring knowledge of Hudson River...
Principal facts for gravity stations of part of the Selway-Bitterroot Wilderness, Idaho and Montana
Michael R. Brickey, Viki Bankey, M. Dean Kleinkopf
1980, Open-File Report 80-1241
During the summers of 1978 and 1979, 211 gravity stations were established in the Selway-Bitterroot Wilderness area (Fig. 1). The data were obtained as part of the U.S. Geological Survey's (USGS) program to evaluate the mineral-resource potential of wilderness areas. This gravity survey complements a gravity study of the proposed...
Water quality of four lakes in Lakeville, Minnesota
L. H. Tornes, M.R. Have
1980, Water-Resources Investigations Report 80-66
Water-quality characteristics were determined for four selected lakes to provide background data for evaluating changes that may occur in the lakes because of urbanization. Precipitation of calcium carbonate is suggested by high pH values and a decrease in the calcium concentration when magnesium, sodium, and chloride concentrations increase. Pollution is...