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Planning report for the Edwards-Trinity Regional Aquifer-System analysis in central Texas, Southeast Oklahoma, and Southwest Arkansas

Water-Resources Investigations Report 86-4343

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Abstract

The Edwards-Trinity regional aquifer system supplies more than 0.78 million acre-ft/yr (700 million gal/day) of water for central Texas and small adjacent parts of southeast Oklahoma and southwest Arkansas. Current (1986) and future concerns about the aquifer system involve the ever-increasing demand for water, most of which is associated with rapid population increases. Decreases in, or elimination of, spring discharges and encroachment of water from downdip saline water zones into updip freshwater zones are of primary concern in the area underlain by the Edwards (Balcones Fault Zone) aquifer. Water level declines of several hundred ft in the Trinity aquifer are a serious concern in some metropolitan areas. The Edwards-Trinity regional aquifer-system analysis project, begun in October 1985 and scheduled to be completed by October 1991, is one of a series of similar projects being conducted nationwide. The project is intended to define the geohydrologic framework, and to describe the geochemistry and groundwater flow of the aquifer system in order to provide a better understanding of the system 's long-term water yielding potential. A multidisciplinary approach will be used in which computer-based digital simulation of flow in the system will be the principal method of geohydrologic investigation. (Author 's abstract)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Planning report for the Edwards-Trinity Regional Aquifer-System analysis in central Texas, Southeast Oklahoma, and Southwest Arkansas
Series title:
Water-Resources Investigations Report
Series number:
86-4343
Edition:
-
Year Published:
1986
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
iv, 15 p. :maps ;28 cm.