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Page 5927, results 148151 - 148175

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Publication Extents

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Annual peak discharges from small drainage areas in Montana through September 1976
M. V. Johnson, R. J. Omang, J. A. Hull
1977, Open-File Report 77-172
Annual peak discharge from small drainage areas is tabulated for 336 sites in Montana. The 1976 additions included data collected at 206 sites. The program which investigates the magnitude and frequency of floods from small drainage areas in Montana, was begun July 1, 1955. Originally 45 crest-stage gaging stations were...
Selected water-level records for western Oklahoma, 1975-1976
Robert L. Goemaat
1977, Open-File Report 77-239
A systematic program to collect water-level records in Oklahoma began in 1937. The objectives of this program are (1) to provide long-term records of water-level fluctuations in representative wells, (2) to facilitate the prediction of water-level trends and indicate future availability of ground-water supplies, and (3) to provide information for...
Potentiometric surfaces of the upper glacial and Magothy aquifers and selected streamflow statistics, 1943-72, on Long Island, New York
Donald E. Vaupel, K. R. Prince, A.J. Koehler, Mario Runco
1977, Open-File Report 77-528
A brief text describes the two major aquifers and the discharge pattern of major streams on Long Island. Four water-table maps for the years 1943, 1959, 1966, and 1972, an average water-table map for the period 1943-72 supplemented by five well hydrographs representing Kings, Queens, western Nassau, eastern Nassau, and...
Hydrologic changes after logging in two small Oregon coastal watersheds
David Dell Harris
1977, Water Supply Paper 2037
Effects of clearcut, cable logging on the hydrologic characteristics of a small coastal stream in Oregon indicate an average 181-percent increase in sediment yield over a 7-year postlogging period. Annual runoff and high-flow volumes increased 19 and 1.1 inches (480 and 28 mm), respectively, after logging in the watershed. Clearcutting...
Availability of ground water in Montgomery County, Maryland
Claire A. Richardson
1977, Open-File Report 76-882
Montgomery County, Md., is underlain by consolidated rocks that, on the basis of well yields, have been subdivided into six hydrogeologic units. The distribution of the hydrogeologic units are shown on a map (scale 1:62,500). Most wells drilled in the county yield between 6 and 25 gal/min (0.4 to 1.6...
Potentiometric surface map of the Floridan Aquifer in the St. Johns River Water Management District and vicinity, Florida, September, 1977
F. A. Watkins, C. P. Laughlin, E. C. Hayes
1977, Water-Resources Investigations Report 78-69
This map presents the potentiometric surface of the Floridan aquifer in the St. Johns River Water Management District and vicinity for September 1977. The Floridan aquifer is the principal source of potable water in the area. Water-level measurements were made on approximately 900 wells and springs. The potentiometric surface is...
Artificial recharge to a freshwater-sensitive brackish-water sand aquifer, Norfolk, Virginia
Donald L. Brown, William Dudley Silvey
1977, Professional Paper 939
Fresh water was injected into a brackish-water sand for storage and retrieval. The initial injection rate of 400 gpm decreased to 70 gpm during test 3. The specific capacity of the well decreased also, from 15.4 to 0.93 gpm. Current-meter surveys indicated uniform reduction in hydraulic conductivity of all contributing...