Geological Survey Water-Supply Paper Volume 1328-1329

Geological Survey Water-Supply Paper Volume 1328-1329

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. Excerpt: ... their vicinity; they are wells that encountered very small crevices or none at all. The probabilities are high that a successful well could be developed at no great distance from the unsuccessful one. In dry summers the yields of wells diminish, and some wells go dry; however, enough water to satisfy needs can be developed within the limits of the usual farm and little water is hauled even in dry summers. It remains to be seen how fully the supply of ground water will be able to satisfy future demands. Here, as in the rest of the Nation, the demand for water is rising as more and more waterusing equipment is installed about the home and farm. Furthermore, interest is being shown in the possibilities of supplemental irrigation of pastures and crops to avoid the losses that drought causes every few years. The chief factor limiting the amount of ground water available in any spot is the thinness of the zone that is saturated with water of acceptable quality. As described previously, this zone averages only about 85 feet thick during the summer season of water need. Crevices exist from the surface of bedrock to depths of more than 200 feet, but the depth to water in summer averages more than 25 feet below the land surface, and near a depth of about 110 feet the overall quality of the water is probably poor. Probably no more than a few inches of recoverable water are stored in this freshwater zone in the summer. Heavy pumping at one spot soon reduces the local supply, unless the well is located along a drainage course which concentrates the underground flow from the upstream area. Obtaining the greatest possible yield of ground water calls for two types of procedures. First, the water naturally in storage should be developed as fully as possible. Second, ..
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Product details

  • Paperback | 48 pages
  • 189 x 246 x 3mm | 104g
  • United States
  • English
  • black & white illustrations
  • 1236858034
  • 9781236858030