thumbnail

Appraisal of shallow ground-water resources, Pueblo Army Depot, Colorado

Open-File Report 72-447

Prepared by the U.S. Geological Survey for the Department of the Army Pueblo Army Depot
By:
and

Links

Abstract

The water supply for the Pueblo Army Depot, 15 miles wast of Pueblo, Colo., is obtained from wells that tap an aquifer in terrace alluvium. Withdrawals have resulted in a water-level decline of 27 feet, which adversely affects the discharge rate of individual wells. Furthermore, excessive pumpage has resulted in progressive deterioration of water quality. Over a 20-year period, hardness has increased from 70 milligrams per liter to 135 milligrams per liter and dissolved-solids content has increased from 250 milligrams per liter to 370 milligrams per liter.


Two new supply wells were drilled in the southern part of the Depot and were tested to determine aquifer properties and probable production rate. The hydraulic conductivity determined from these tests ranged from about 350 to nearly 600 gallons per day per square foot. The transmissivity for the full thickness of the aquifer is in the range of 7,500 to 12,000 gallons per day per foot.<.p>

The two new supply wells can be pumped at a combined rate of about 140 gallons per minute. If pumpage in the existing well field is reduced by the same amount, some recovery of water levels in the field will occur and the trend in water quality deterioration may slow or even reverse.

Geospatial Extents

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Appraisal of shallow ground-water resources, Pueblo Army Depot, Colorado
Series title:
Open-File Report
Series number:
72-447
Year Published:
1972
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Denver, CO
Description:
44 p.
Country:
United Ststes
State:
Colorado
Other Geospatial:
Pueblo Army Depot