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Page 4902, results 122526 - 122550

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Water quality in the tidal Potomac River and estuary, hydrologic data report, 1979 water year
Stephen F. Blanchard, D. C. Hahl
1981, Open-File Report 81-1074
This report contains data on the physical and chemical properties measured during the 1979 water year for the tidal Potomac River and estuary. Data were collected routinely at five major stations and periodically at 14 intervening stations. Each major station represents a cross section through which the transport of selected...
Evaluation of ground-water monitoring network, Santa Cruz County, California
G. G. Blankenbaker, Christopher D. Farrar
1981, Open-File Report 81-139
The Santa Cruz County Flood Control and Water Conservation District seeks to improve the existing network of observation wells to monitor water levels and ground-water quality in the Pajaro Valley subarea and the Aptos-Soquel, San Lorenzo, and Santa Cruz Coastal subbasins in California. The proposed network , consisting of 92...
Completion and testing of Madison Limestone test well 3, NW1/4SE1/4 sec. 35, T.2N., R.27E., Yellowstone County, Montana
Richard K. Blankennagel, Lewis W. Howells, W. Roger Miller
1981, Open-File Report 81-528
Selected intervals in the lower and upper parts of the Mission Canyon Limestone of Mississippian age, and the Amsden Formation and Tensleep Sandstone of Pennsylvanian age, containing water with dissolved-solids concentrations of 3,000 milligrams per liter or less, were perforated through 7-inch casing that was cemented to the wells of...
Approximate ground-water-level contours, April 1981, for the Soquel-Aptos area, Santa Cruz County, California
Richard M. Bloyd
1981, Open-File Report 81-680
Ground-water levels in selected wells were measured in the Soquel-Aptos, Calif., area in April 1981. On the basis of these measurements approximate ground-water-level contours were constructed. The general direction of ground-water movement in the Soquell-Aptos area is from the ridges in the northern part of the area, toward the adjacent...
Digital-model simulation of the Toppenish alluvial aquifer, Yakima Indian Reservation, Washington
E.L. Bolke, James A. Skrivan
1981, Open-File Report 81-425
Increasing demands for irrigating additional lands and proposals to divert water from the Yakima River by water users downstream from the Yakima Indian Reservation have made an accounting of water availability important for present-day water management in the Toppenish Creek basin. A digital model was constructed and calibrated for the...
The Accotink Schist, Lake Barcroft Metasandstone, and Popes Head Formation— Keys to an understanding of the tectonic evolution of the northern Virginia Piedmont
Avery Ala Drake, Peter T. Lyttle
1981, Professional Paper 1205
The newly named Accotink Schist and Lake Barcroft Metasandstone of the Eastern Fairfax sequence are the structurally lowest metamorphic rocks in the northernmost Piedmont of Virginia. The Accotink consists of beds of pelitic schist that have thin basal intervals containing graded, very fine grained metasiltstone, as well as interbeds of...
Surface geology of the Jeptha Knob cryptoexplosion structure, Shelby County, Kentucky
Earle Rupert Cressman
1981, Professional Paper 1151-B
The Jeptha Knob crytoexplosion structure, described by Bucher in 1925, was remapped in 1973 as part of the U.S. Geological Survey and the Kentucky Geological Survey cooperative mapping program. The knob is in the western part of the Blue Grass region. Hilltops in the rolling farmland adjacent to the knob...