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The 1948 Upper Colorado River Compact Allocates the Upper Basin consumptive use of water as <br />follows: <br />Arizona: 50,000 acre - feet/year <br />Of the total beneficial consumptive use allocated to the Upper Basin, less the 50,000 acre -feet allocated <br />to Arizona, the apportionment is: <br />Colorado: <br />51.75% <br />Utah: <br />23% <br />Wyoming: <br />14% <br />New Mexico: <br />11.25% <br />Additionally, the State of Colorado may not deplete the flow in the Yampa River below an aggregate of 5 <br />maf over any 10 -year period. <br />The CWCB Colorado River Basin Fact Sheee states: "Depending upon the interpretation of the <br />Compacts, other laws, and the amount of water in the river, Colorado's right to the consumptive use of <br />water under the Compacts may range from 3.079 maf (million acre -feet) to 3.855 maf per year. Colorado <br />currently consumes an average of 2.3 maf per year with facilities in place capable of using up to 2.6 maf. <br />Colorado's apportionment has not been divided among the various sub - basins within the state. The <br />Yampa and La Plata River Basins have specific delivery obligations under the Compacts. The allocation <br />and administration of any surpluses and shortages under the Compacts within Colorado remains open to <br />discussion but ultimately will be subject to determination and administration by the State Engineer". This <br />suggests that Colorado can deplete an additional 0.78 maf to 1.56 maf before full Compact development. <br />Additional work in the context of the CWCB sponsored Statewide Water Supply Initiative (SWSI) <br />presented existing Compact depletion estimates and developed projections of additional depletions out to <br />year 2030. Table 7.4 from the SWSI final report, included on the following page, concludes that <br />additional Compact development could range from 124,000 AF to 235,000 AF by 2030 depending on <br />assumptions used. <br />2 CWCB Colorado River Basin Fact Sheet, http: / /cwcb. state.co.us/ Board /Fact_Sheets /Basin_PIanning.htm <br />21 <br />