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Reconnaissance of ground-water resources in a part of the Yampa River basin between Craig and Steamboat Springs, Moffat and Routt counties, Colorado

Water-Resources Investigations Report 77-4

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Abstract

Parts of the Yampa River basin near the towns of Steamboat Springs and Craig, Colo., have undergone rapid population growth in recent years. Aquifers in the study area include: alluvium; the Browns Park, Wasatch, Fort Union, Lance, Williams Fork, and Iles Formations; and the Lewis and Mancos Shales. Well yields are generally less than 25 gpm (gallons per minute). In the alluvium of the Yampa River, well yields may be as much as 900 gpm. Where the sandstones of the Williams Fork and Iles Formations are fractured, well yields have been reported to be as much as 100 gpm. Well yields from the Lewis and Mancos Shales are less than 5 gpm. The quality of the ground water is variable and dependent on rock type. Most of the waters are calcium and sodium bicarbonate types. Calcium sulfate type waters are found where water in the aquifer has been in contact with gypsum, organic materials, or coals. Dissolved-solids concentrations of ground water range from as little as 82 to as much as 4,230 milligrams per liter. (Woodard-USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Reconnaissance of ground-water resources in a part of the Yampa River basin between Craig and Steamboat Springs, Moffat and Routt counties, Colorado
Series title:
Water-Resources Investigations Report
Series number:
77-4
Edition:
-
Year Published:
1977
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
col. map ;31 x 62 cm. on sheet 86 x 118 cm. fold. in envelope 30 x 24 cm.