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COMPACT ENTITLEMENTS <br />Colorado River Compact <br />The State of Colorado is a signatory state in two major interstate compacts <br />relating to the Colorado River. The Colorado River Compact allocates the water of the <br />Colorado River basin between the upper basin states (Colorado, Wyoming, Utah, and <br />New Mexico) and the lower basin states (Nevada, Arizona, and California). The Upper <br />Colorado River Compact allocates the upper basin states' entitlement among the upper <br />' basin states. The Upper Colorado River Compact divides the consumptive use available <br />to the Upper Basin, based on the following percentages: <br />Colorado 51.75% <br />New Mexico 11.25% <br />' Utah 23.00% <br />Wyoming 14.00% <br />' The Upper Colorado River Compact requires Colorado to deliver sufficient water <br />from the San Juan River and its tributaries (including the Animas River) to allow New <br />' Mexico to make full use of its Colorado River entitlement (11.25 percent of the Upper <br />Basin consumptive use). <br />The CWCB informally convened an ad hoc Endangered Fish Flow and Colorado <br />' River Compact Water Development Workgroup to assist in estimating and protecting the <br />future uses of Colorado's unused compact apportionment in the Colorado River basin. <br />This workgroup prepared a report in 1995 entitled, "Colorado River Compact Water <br />Development Projection." The workgroup determined that the San Juan River basin in <br />Colorado, which includes the Animas River, San Juan River mainstem, Piedra River, La <br />Plata River, and other streams, produces an average natural flow of 1,938,200 acre -feet <br />per year, of which the then - present (1985) consumption within Colorado was 259,600 <br />acre -feet per year. Based on data presented in the Bureau of Reclamation report, <br />"Colorado River System Consumptive Uses and Losses Report" (Revised December <br />2004), the annual consumption within the San Juan River Basin in Colorado averaged <br />353,600 acre -feet during 1996 -2000, a substantial increase over the previous estimate. <br />