Declining well yields related to depth in fractured rocks - Use of an exponential equation

Journal Article · Mon Mar 01 00:00:00 EST 1993 · Bulletin of the Association of Engineering Geologists; (United States)

OSTI ID:6520090

Page, R W ^[1]

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1. California State Water Resources Control Board, Sacramento (United States)

In southwestern Nevada County, where most wells are drilled into granitic or metamorphic rocks, well yields were found to decrease with increasing well depth. Data from that report indicated that declining well yields in the area probably could be approximated by an exponential equation. The purpose of this report is to demonstrate that an exponential equation can be used to approximate declining well yields related to depth in hard-rock areas of granitic and metamorphic rocks in the western foothills of the Sierra Nevada. The scope includes applying this equation to data from southwestern Nevada County, California.

• OSTI ID: 6520090
• Journal Information: Bulletin of the Association of Engineering Geologists; (United States), Vol. 30:1; ISSN 0004-5691
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
54 ENVIRONMENTAL SCIENCES
GROUND WATER
FLOW MODELS
WATER WELLS
PRODUCTION
WATER INFLUX
CALIFORNIA
CRETACEOUS PERIOD
EQUATIONS
GEOLOGIC FRACTURES
GRANITES
JURASSIC PERIOD
METAMORPHIC ROCKS
DEVELOPED COUNTRIES
GEOLOGIC AGES
GEOLOGIC STRUCTURES
HYDROGEN COMPOUNDS
IGNEOUS ROCKS
MATHEMATICAL MODELS
MESOZOIC ERA
NORTH AMERICA
OXYGEN COMPOUNDS
PLUTONIC ROCKS
ROCKS
USA
WATER
WELLS
580000* - Geosciences
540250 - Environment
Terrestrial- Site Resource & Use Studies- (1990-)