Publication Citation

USGS Series Water-Resources Investigations Report
Report Number 75-63
Title Preliminary digital model of ground-water flow in the Madison Group, Powder River Basin and adjacent areas, Wyoming, Montana, South Dakota, North Dakota, and Nebraska
Edition -
Language ENGLISH
Author(s) Konikow, L. F.
Year 1976
Originating office
USGS Library Call Number (200) WRi no.75-63
Physical description v, 44 p. :ill., maps(some fold.) ;31 cm.
ISBN

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Abstract

A digital simulation model was used to analyze regional ground-water flow in the Madison Group aquifer in the Powder River Basin in Montana and Wyoming and adjacent areas. Most recharge to the aquifer originates in or near the outcrop areas of the Madison in the Bighorn Mountains and Black Hills, and most discharge occurs through springs and wells. Flow through the aquifer in the modeled areas was approximately 200 cubic feet per second. The aquifer can probably sustain increased ground-water withdrawals of up to several tens of cubic feet per second, but these withdrawals probably would significantly lower the potentiometric surface in the Madison aquifer in a large part of the basin. (Woodard-USGS)