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Potential for development of ground water at a test site near Truro, Massachusetts
J.H. Guswa, Clark J. Londquist
1976, Open-File Report 76-614
An aquifer test was carried out at a possible ground-water development site in Truro, Massachusetts. Average lateral hydraulic conductivity for material in the screened interval of the test well is 216 feet per day. Specific yield of the material at water-table depth is about 0.10. Anisotropy, or ratio of lateral...
Geohydrology of the Oklahoma Panhandle, Beaver, Cimarron, and Texas Counties
D.L. Hart, G. L. Hoffman, Robert L. Goemaat
1976, Water-Resources Investigations Report 75-25
The Ogallala aquifer, which consists of semiconsolidated clay, sand, and gravel, is the principal source of ground water in the Oklahoma Panhandle. This aquifer commonly yields 500 to 1,000 gallons per minute (32 to 63 litres per second) and may yield as much as 2,500 gallons per minute (158 litres...
Backflushing Filters for Field Processing of Water Samples Prior to Trace-Element Analyses
V. C. Kennedy, E. A. Jenne, J.M. Burchard
1976, Water-Resources Investigations Report 76-126
A portable unit is described for filtering water samples at field sites in such a manner that the filtrate is suitable for analysis not only of major constituents but also of trace elments at the mocrogram-per-liter level. A battery-operated peristaltic pump forces the water sample through medical-grade silicone tubing into...
Historic water-level changes and pumpage from the principal aquifers of the Memphis area, Tennessee: 1886-1975
James H. Criner, William Scott Parks
1976, Water-Resources Investigations Report 76-67
The Memphis Sand ("500-foot" sand) supplies about 95 percent of the water used in the Memphis area for municipal and industrial purposes. In general, pumpage has increased at an irregular rate since the completion of the first well to this aquifer in 1886. These withdrawals are responsible for an almost...
In-situ measurements of seismic velocities in the San Francisco Bay region...Part II
James F. Gibbs, Thomas E. Fumal, Roger D. Borcherdt
1976, Open-File Report 76-731
Seismic wave velocities (compressional and shear) are important parameters for determining the seismic response characteristics of various geologic units when subjected to strong earthquake ground shaking.Seismic velocities of various units often show a strong correlation with the amounts of damage following large earthquakes and have been used as a basis...
Measurement of "turbidity" and related characteristics of natural waters
R.J. Pickering
1976, Open-File Report 76-153
The U.S. Geological Survey, Water Resources Division has adopted the following principles to be used in selecting methods for the measurement of light transmitting characteristics of natural waters: (1) standard instruments and methods are to be adopted to measure and report in optical units, avoiding ' turbidity ' as a...