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priorities from Water District 53 to the USBR projections. These senior depletions are also shown in Table 2 above and total 53,940 acre feet. The same monthly demand pattern for the subordinated depletions was assumed for these senior depletions, which were also considered net depletions after return flow to the Gunnison River above Crystal. It is assumed that most of the historic depletions above Blue Mesa are included in these senior depletions. The senior depletions and the depletions benefitting from the subordination total 113,940 acre feet. E. Water Rights Below Black Canyon Historic operations of Blue Mesa have generally maintained a minimUM flow below the Gunnison Tunnel of 200 cfs, lower than that which is examined in this study for certain future operations. Thus, such future Blue Mesa operations should not increase the frequency of calls by existing downstream diversions. Calls from the Redlands diversion have been very infrequent (7 instances over the last 26 years). The records for these calls were compared against the records of flow at the guage just below the Gunnison Tunnel to determine whether these calls went past the North Fork of the Gunnison, and up the mainstream into the area of study. The guaged flows below the Gunnison Tunnel exhibited little, if any, response to the calls before and after the closure of Blue Mesa in early 1966, indicating that the call did not go up the mainstream and curtail diversions under the WBLA, Inc. 1909 Broadway, #3, Boulder, Colorado S0302 14