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I I I I I I , I i I I I I I I I I I I I I I 100,000 acre-feet (af) per year. The Closed Basin Project deliveries are categorized by type of use as follows: 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 - deliveries available at a charge for general use by Rio Grande and Conejos 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. Priority One - 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 mainstem 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 obligations. 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. vi