WSP03388

• File Number: 8041
• Description: 208 Clean Water Grant
• State: CO
• Date: 3/4/1982
• Author: CWCB
• Title: Quarterly Reports on the 208 Clean Water Grant for the Water Quality Control Division of the Coloradio Dept of Health
• Water Supply Pro - Doc Type: Publication

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3683
GLENWOOD-DOTSERO SPRINGS UNIT - COLORADO

The Glenwood-Dotsero Springs Unit is located in western
Colorado in Eagle and Garfield Counties. It covers a narrow
stretch of canyon along the Colorado River between DotserO and
New Castle. Glenwood Springs lies within the study area and is
located about 13 miles east of New Castle and 18 miles west of
Dotsero. ;

This area contributes approximately 500,000 tons of salt
annually to the Colorado River. It is estimated that about 50
percent of this salt comes from 18 identified mineral springs in
the area. If the springs could be controlled and the salt removed,
the salt concentration at Imperial Dam would be reduced by 23 mg/L.
This is the second largest source of salinity in the state of Colo-
rado, with an annual discharge of approximately 25,000 acre-feet.

The project is currently in the feasibility stage with
collection and chemical analysis of the springs and the determina-
tion of flow quantl~ies already completed. The Bureau and its
contractor, URS Corporation, have identified five specific candidate
plans:

Candidate Plan

TDS change at Cost-effectiveness
Imperial Dam (mg/Ll ($ per mq/L/a)

-22.7 $1,000,000

1. Reverse osmosis desalting
of Glenwood Springs sur-
face and subsurface
water at Silt, Colo.

2. Natural evaporation of
Glenwood and Dotsero
surface water at Mack,
Colo.

-25.7

700,000

3. Natural evaporation of
Glenwood surface water
only at Mack, Colo.

4. Enhanced (spray) evaporation
of Glenwood and Dotsero
surface water at Silt, Colo.

-17.6

500,000

-25.7

525,000

5. Enhanced (spray) evaporation
of Glenwood surface water
at Silt, Colo.

-17.6

489,000

In all the candidate plans, there appear to be opportunities for
staging and/or sizing to accommodate future uses of saline water
for energy development. These plans will be further refined at
the appraisal level for use in public meetings scheduled for the
end of this year.

The Regional Director's proposed feasibility report is
scheduled for midcalendar year 1984 and Commissioner's report
seeking authorization is scheduled for early 1985.

(updated 11/13/81)

DS:CS

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