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DRAFT DRAFT DRAFT <br />Total Flow at Dolores and Bedrock without MVIC Diversions <br />900000 <br />800000 <br />700000 <br />LL 600000 <br />Q <br />d 500000 <br />o~ <br />~ 400000 <br />N <br />0 300000 <br />200000 <br />100000 <br />0 <br />1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 <br />-Total Flow at Bedrock -Total Flow at Dolores <br />Figure 6. Total annual flow at Bedrock and Dolores gages for 1974-1985, <br />synthesized at the Bedrock gage by adding MVIC daily diversions back into the <br />daily gage record. <br />The peak flow data comparison over these years reinforces the general patterns for <br />total flow described above (Figure 7) in that during wet years, peak flows at <br />Bedrock were much larger than those at Dolores; during dry years, the difference <br />between peaks at Dolores and Bedrock was diminished. However, there is greater <br />variability in the peak flow data, especially when comparing the date that peak flows <br />occurred. The four peaks greater than 8000 cfs at Bedrock all occurred between <br />April 19 and April 26, while the peaks for the same years at Dolores occurred <br />between May 30 and June 11. For dry years (e.g., 1974, 1977, 1981) the timing of <br />peaks is even more variable, with peaks at Bedrock in 1974 and 1977 occurring in <br />mid-July in response to monsoonal moisture. Peaks at Dolores generally shift <br />forward (May 11 and April 18 in 1974 and 1977). In 1981, peak flow at Dolores and <br />Bedrock were one day apart, indicating the direct relationship of snowmelt runoff <br />and peak flow for this particular year. In general, these data indicate that the <br />relationship between the peak flows at these two gage sites is not directly <br />correlated. <br />9/5/06 1 ~ <br />