WSP11413

• File Number: 8443.600
• Description: Narrows Unit - Studies
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 2/1/1963
• Author: Bor,
• Title: Site Selecion Presentation to the South Platte Steering Committee
• Water Supply Pro - Doc Type: Report/Study

8. The Weld County site in addition to producing
9,000 to 13,000 acre-feet'more water shifts the
use of 17,000 acre-feet of water from the
North Sterling, Farmers-Pawnee, and some smaller
ditches in this reach to the Riverside and
BiJou ditches.

1952-1957 Time Level

1. There is sufficient demand below either site to
use all water developed.

2. The Weld County site reduces valley shortages
2,500 acre-feet more than the Narrows site. ,

3. The Weld County site reduces Riverside and BiJou
shortages by 22,000 acre-feet - the Narrows site
by 11,000 acre-feet.

4. The Weld County site reduces shortages below the
Bijou and Riverside service areas by 33,000
acre-feet - the Narrows site by 45,000 acre-feet.

Without provision for controlling BiJou Creek floods, the Weld
County site costs $7,000,000 more than the Narrows site. While
the Weld County site provides for a somewhat greater reduction
in valley shortages, its main effect is to reduce shortages in
an upstream area rather than a downstream area. These two
advantages of the Weld County site are not considered by the
Bureau sufficient to justifY an added expenditure of $7,000,000.
The Bureau of Reclamation is therefore again recommending the
Narrows site.

Before we go into some of the more important details of
the studies it would be advisable to go over the major study
criteria.

'Criteria for Narrows-Weld County Dam Site Selection Study

1. Basin water supply will be supplemented by return flows
resulting from municipal growth.

2. ~I needs will have first priority for use.

3. Use at highest possible elevatiOll permits more opportunity
for reuse of return flows.

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