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38 <br />Duchesne, and aid in the recovery of endangered fishes. This study was funded <br />and field data collections began in the spring of 1997. <br />TABLE 2 <br />DUCHESNE RIVER FLOW RECOMMENDATIONS <br />MONTHS WET <br />25~ EXCEEDANCE AVERAGE <br />50~ EXCEEDANCE DRY <br />75~ EXCEEDANCE <br />JAN 477 410 345 <br />FEB 493 437 379 <br />MAR 590 471 352 <br />APR 603 370 199 <br />MAY 1790 906 334 <br />JUN 2970 1600 621 <br />JUL 524 209 40 <br />AUG 285 100 31 <br />SEP 193 105 47 <br />OCT 331 216 109 <br />NOV 477 374 265 <br />DEC 499_ 428 350 <br />ANNUAL TOTAL <br />555 KAF <br />338 KAF <br />184 KAF <br />*(values are expressed as mean monthly flows in cubic it. per secona~. <br />Final flow recommendations will be based on the research results, and will <br />test the validity of preliminary flow recommendations for the Duchene River. <br />With pre-development river flows depleted by 74 percent, the Duchesne River is <br />proportionately more developed than any other tributary in the Upper Colorado <br />River system. Protecting, and/or improving remaining habitats are essential <br />to avoid jeopardy to the species and/or adverse modification of critical <br />habitats in both the Duchesne and Green Rivers. <br />Cumulative Effects <br />