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Evaluation of a technique for simulating a compacting aquifer system in the Central Valley of California, USA

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Abstract

Large volumes of water have been pumped from the Central Valley aquifer system since the early 1900's. Water levels in the most heavily pumped areas had declined as much as 120 m by 1970. These large water-level declines resulted in approximately 21,000 hm3 of water released by inelastic compaction of numerous compressible fine-grained deposits. The principal technique used to evaluate the aquifer system was a three-dimensional computer program that solves the basic ground-water flow equation. The program was modified to incorporate water released by inelastic compaction of the fine-grained deposits by making storage a function of hydraulic head. The computer-simulated volume of water released from inelastic compaction for the period from 1961 through 1977 was 6 percent of the estimated volume. The technique could be used in other areas where water is released as a result of inelastic compaction of fine-grained deposits.

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Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Evaluation of a technique for simulating a compacting aquifer system in the Central Valley of California, USA
ISBN 9780947571405
Year Published 1984
Language English
Publisher IAHS Press
Publisher location Wallingford, Oxfordshire
Description 11 p.
First page 53
Last page 63
Conference Title Land Subsidence: Proceedings of the Third International Symposium on Land Subsidence
Conference Location Venice, Italy
Conference Date March 19-25, 1984
Country United States
State California
Other Geospatial Central Valley of California
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