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At least 91 records · Page 5Linked to original sources

Seismic cross sections across the Spokane River valley and the Hillyard Trough, Idaho and Washington

Two seismic cross sections were run with a refraction seismograph near Spokane, Wash., in Hay and June 1951. One section trended north-south across the Spokane River valley plain Just east of the Idaho-Washington boundary; the other trended east-west across the strath just north of the Hillyard section of Spokane. Each section secured data that permitted the compilation of a graphic cross section showing the position of (1) the water table, (2) the base of the glacial and glaciofluviatile deposits, and (3) the generalized base of the Latah formation and associated deposits (which is the top of the consolidated bedrock). The data confirm the inference of Pardee and Bryan that the granitic bedrock lies at an altitude of about 1,0OO feet beneath the valley plain near the State boundary. The base (a heretofore unlocated feature) of the glacial outwash deposits, the main aquifer of the area, was determined as an uneven plane at an altitude of 1,800 to 1,700 feet in the State-boundary district and at 1,700 feet in the Hillyard Trough district.

Open-File Report

Some aspects of the water supply in the South Coastal basin, California

The observation well network in Alabama was started in 1940. Unpublished water-level data collected periodically at 254 observation wells are listed in this report with the location, description, and general information on construction of the observation wells. Publications containing water-level data from selected observation wells are also listed. (USGS)

Circular

Ground water for industrial use in the vicinity of Little Rock, Arkansas

Several inquiries about the availability of ground water and its quality for industrial use in the vicinity of Little Rock, Ark. have led to the assembling of the following information from the files of the United States Geological Survey in Little Rock and Fayetteville. There are large undeveloped reserves of ground water in the vicinity of Little Rock that can be made available through large-capacity wells. However, the water probably would require treatment for most industrial uses. Ground water is used in Little Rock and vicinity at an estimated rate of about 10 million gallons per day. The most productive water-bearing material consists of alluvial deposits along the Arkansas River and in a large area extending northeast, east, and southeast of the city. Records of 41 selected wells and chemical analyses of water from 28 wells tapping these deposits are given below. The areas in which the productive deposits occur and the location of the wells are shown on the map.

Arkansas