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Table 17. A periodic chart of the flow and flow windows which will <br />maintain 90 percent of the weighted-useable-area for adult and <br />depositional life stages of Colorado squawfish and adult <br />razorback suckers. <br />------------------------------------------------------------------------- <br />Jan Feb Mar ~r Mao Jun Jul Aug Sew' Oct Nov Dec <br />Jan Dec <br />1500 ( 500-2700) Colorado squawfish: Adult <br />Mid-Jun Sep <br />4200 (2200-5600) <br />Colorado squawfish: Deposition <br />Mao Jun <br />5600 (1600-7700) <br />Razorback sucker: Adult <br />Jul Nov <br />1900 (1400-2700) <br />Razorback sucker: Adult <br />RECONI-~iDED FIAW <br />Jan Mav Mid-Jun Jul Sep Oct Dec <br />1700------------------ 2700 2200-------------------- 1700--------- <br />Mean monthly flows from 1930 to 1982 <br />JAN FEB MAR APR MAY 3UN JUL At3G SEP OCT NOV DEC <br />2546 3000 2415 5519 9653 8776 3777 1934 1495 2360 2566 2607 <br />the PHABSL^1 analysis for Ruple Ranch predicts that habitat is maximized at <br />flows that are quite low relative to the range of historic flows. From <br />November to April the recommended flow of 1700 cfs is only 55 percent of <br />the average flow during this time period (3109 cfs). The recommended flow <br />for May is only 30 percent of the mean flow (9653 cfs). Similarly in June <br />and July the optimum flow is 35 percent of the monthly mean (6276.5). <br />According to Tyus, Jones and Trinca (1987) optimum Colorado squawfish <br />spawning and initiation of migration occurred between 2820 and 13100 cfs <br />36 <br />