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<br />24 <br /> <br />historic criteria from 200 to 600 cfs during the 4 month boating season <br /> <br />and would involve the maintenance of a minimum stream flow in the 29-mile <br /> <br />reach that was 300 cfs greater than that has been proposed for the trout <br /> <br />fishery. In those years when Blue Mesa releases are made in the model to <br /> <br />protect minimum stream flows at Westwater for endangered fishes, however, <br /> <br />the total release for fishery purposes (700 cfsl would exceed the proposed <br /> <br />minimum for boating purposes. <br /> <br />K. Gunnison Tunnel Diversion Patterns <br /> <br />The capacity of the Gunnison Tunnel was assumed to be 1,122 cfs in <br /> <br />one study scenario and 1300 cfs in aYlother. Because diversions to the <br /> <br />Gunnison Tunnel for irrigation exhibit great variability from month to <br /> <br />month and year to year, they were modelled according to actual diversions <br /> <br />for the period of record. In one scenario, these historical diversions <br /> <br />were factored upward in an amount proportioYlal to the increased tunnel <br /> <br />capacity under the assumption that the increased capacity of the Gunnison <br /> <br />Tunnel will be used for irrigation diversions. <br /> <br />(See Appendix B.l <br /> <br />The diversions through the Gunnison Tunnel for the purpose of <br /> <br />hydropower generation were assumed to use all of the excess capacity of <br /> <br />the Tunnel for diversions in priority up to a maximum of 900 cfs. <br /> <br />L. M&I Supplies <br /> <br />WBLA, Inc. 1909 Broadway, #3, Boulder, Colorado 80302 <br />