PUB00027

• Year: 1990
• Title: Final Report Rio Grande Water Supply Study, Phase 1
• CWCB Section: Interstate & Federal
• Author: San Luis Valley Water Conservancy District
• Description: Reconnaissance level determination of the physically and legally available flow at 4 reservoir sites in the Rio Grande Basin upstream of Del Norte, Colorado
• Publications - Doc Type: Brochure

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100,000 acre-feet (af) per year. The Closed Basin Project deliveries are
categorized by type of use as follows:

Priority One - deliveries made to assist the State of Colorado in

meeting its Compact commitments to New Mexico and Texas.

Priority One deliveries are limited to an average 60,000

acre-feet/year over any 10 consecutive years.

Priority Two - deliveries made to enhance wildlife in the Alamosa

National Wildlife Refuge and Blanca Wildlife Habitat

Area. Priority Two deliveries are limited to 5,300 af

annually. For the Rio Grande Water Supply Study.

Priority Two deliveries were assumed to not contribute

flow to the Rio Grande and, therefore, were not modeled.

Priority Three - del iveries available at a charge for general use by Rio

Grande and Canejas water users after Priority One and

Priority Two uses have been satisfied. In any given

year, water available for Priority Three delivery will

depend on the amount of Priority One and Priority Two

water delivered. Priority Three water (as defined in

this study) was described as Priority Four water in the

authorizing legislation for the Closed Basin Project.

For each of the two mainstem diversion scenarios, Closed Basin Project deliveries

for Priority One and Priority Three water were developed.

The Closed Basin Project Priority One deliveries were estimated to alleviate as

much Compact curtailment of the rnainstem diversions as possible while satisfying

various operating guidelines of the Closed Basin Project. Most of the Priority

One deliveries were generated for average or above average runoff years since

those are the years in which Colorado has the greatest Compact obI igations.

Priority One deliveries were limited to an average of 60,000 af per year in any

ten year period or 94,500 af in anyone year.

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