Laserfiche WebLink
4 BIOLOGICAL REPORT 24 <br />Fontenelle <br />>I0M <br />='z <br />Flaming <br />Duchesne R. <br /> <br /> <br /> C/ <br /> <br />fI C <br />4 <br />4• f 4 <br />?a <br />San Juan R. <br />Flow Gauge <br />Dam <br />Diversion Dam <br />-}? Trans-basin Diversion <br />6`. Tailwater Trout Fishery <br />Rhithron-Potamon Transition <br />Squawfish Spawning Area <br />Nursery Area <br />C Humpback Chub Population <br />WYOMING <br />? ---- -- ----------COLORADO <br />C ' - Yampa <br />White River - 4- <br />+ <br />I - -? .e?Je <br />P_ GV?? 4T { <br />ONE 0_1 <br />.?; Aspinal <br />r* T 70 <br />?? 1 coo <br />ka <br /> <br />UTAH _ COLORADO <br />--- --------------- - -- -- ------ <br />ARIZONA NEW MEXICO <br />r•f? ?9 <br />Kilometers 0 50 100 150 200 250 <br />Miles 0 50 100 150 <br />Fig. 1. The Upper Colorado River Basin ecosystem upstream from Lake Powell showing rhithron-potamon <br />transition zones on the largest tributaries, generalized localities of humpback chub populations, localities of <br />squawfish spawning and nursery areas (i.e., alluvial reaches and associated backwaters and wetlands where <br />young-of-the-year and juvenile razorback sucker and Colorado River squawfish are most often found), large <br />hydroelectric or storage dams and diversion dams that regulate discharge and block squawfish and razorback <br />migration, and localities of economically important tailwater trout fisheries (modified from Stanford and Ward <br />1984,1986b; Tyus and Karp 1991).