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<br />. <br /> <br />. <br /> <br />Mr. J. William McDonald <br />October 17, 1989 <br />Page 4 <br /> <br />3. When flows drop to 10 cfs or less by December 1, the <br />amount of water released from Black Lakes would be <br />based upon the anticipated future additional <br />diversions associated with the future buildout of <br />Vail during the months of December, January, <br />February, and March 1 - 15 as shown below: <br /> <br /> Release Release <br />Month (cfs) (acre feet) <br />December 1.01 62.1 <br />January 1.82 111.9 <br />February 1.55 86.6 <br />March 1 - 15 1.33 39.4 <br />Total 300.0 <br /> <br />4. If releases from Black Lakes were delayed beyond <br />December I, due to flows at the Vail Gage in excess <br />of 10 cfs., then releases for the remainder of the <br />winter (through March 15) would be prorated so as to <br />utilize the full 300 acre feet of available storage. <br /> <br />5. If the 10 cfs trigger is not reached by January 1, <br />then releases will begin on January 1 in accordance <br />with the following schedule: <br /> <br /> Release Release <br />~ (cfs) (acre feet) <br />January 1.97 121. 0 <br />February 1.69 93.7 <br />March 1 - 31 1.38 85.3 <br />Total 300.0 <br /> <br />6. Black Lake releases would be periodically checked and <br />adjusted to maintain a constant flow during release <br />periods. <br /> <br />7. The District will continue to monitor its pattern of <br />usage as demands increase with the buildout of Vail. <br />If the pattern of usage throughout the winter months <br />changes, then this proposed plan of operation will be <br />refined to address potential aquatic impacts. <br />