Domestic Water Well Construction

Date
1998-02
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Newark, DE: Delaware Geological Survey, University of Delaware
Abstract
The storage and movement of ground water depends on the types of rocks and associated interconnected spaces in which the water occurs. The Piedmont Province in northernmost Delaware is underlain by crystalline rocks. Because of the massiveness and hardness of such rocks, they yield little or no interstitial water to wells. Water is stored in and moves through fractures, cracks, and solution cavities. The amount of water available depends on the number and size of openings, and the degree to which they are interconnected. Wells drilled in the Piedmont range from 100 to 400 feet in depth and yields are highly variable over very short distances.
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