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The three reservoirs modeled in Scenario 2B were able to eliminate shortages to agricultural deptetion demands that were identified in the No- Action Alternative. Enhanced instream flow targets were met or exceeded throughout the 32-year study period (1952-1983) on Ohio and Tomichi Creeks, but not on upper Cochetopa and Pauline Creeks, where insufficient physical supply caused infrequent deficiencies. Tables 6.2 through 6.4 summarize the monthly instream flows predicted by the model in specified locations on Ohio, Tomichi, and Cochetopa Creeks with the three reservoirs in place. The recreation potential of Castleton and Sargents No. 3 reservoirs appear good. As shown on Figures 6.1 and 6.2, these reservoirs fill regularly and are substantially full most of the time. Pauline Reservoir, shown on Figure 6.3, is often very low or near empty because of the lack of physical supply. Blue Mesa Reservoir storage levels under this scenario differ from the No-Action Alternative as depicted in Figure 6.4. The Taylor Park Exchange Agreement stipulates that the UVWUA be given a credit to draw on Blue Mesa storage in direct proportion to Taylor Park Reservoir releases made in excess of Gunnison Tunnel diversions, up to an amount equal to their Taylor Park storage decree. Flows downstream of Taylor Park Dam, Blue Mesa Reservoir inflows, and tunnel diversions were all monitored in the model to keep track of credits and debits to the "exchange account." As mentioned previously, the late season releases from the three reservoirs increase late season inflows to Blue Mesa, which reduces the need for Gunnison Tunnel diversions to draw on Blue Mesa storage duririg the latter part of the growing season. This reduces the draw on UVWUA's storage credit in Blue Mesa and results in the Taylor Park Exchange Account showing a higher average storage credit than in the No-Action Alternative. The average monthly exchange credit under Scenario 26 is 5228 af/mo, compared to 4857 af/mo in the No-Action Alternative. This indicates that construction of the three in-basin reservoirs increases the dependability of the UVWUA water supply from Taylor Park Reservoir. 6-4