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<br />14 <br /> <br />to the confluence with the Green River in T. 5 S., R. 3 E., section 5 <br />(Uintah Meridian). <br /> <br />Colorado. Delta and Mesa Counties. The Gunnison River and its 100-year <br />floodplain from the confluence with the Uncompahgre River in T. 15 S. , <br />R. 96 W., section 11 (6th Principal Meridian) to Redlands Diversion Dam <br />in T. 1 S.. R. 1 W.. section 27 (Ute Meridian). <br /> <br />Colorado Mesa and Garfield Counties. The Colorado River and its <br />100-year floodplain from Colorado River Bridge at exit 90 north off <br />Interstate 70 in T. 6 S., R. 93 W., section 16 (6th Principal Meridian) <br />to Westwater Canyon in T. 20 S., R. 25 E., section 12 (Salt Lake <br />Meridian) including the Gunnison River and its 100-year floodplain from <br />the Redlands Diversion Dam in T. 1 S., R. 1 W., section 27 (Ute <br />Meridian) to the confluence with the Colorado River in T. 1 S., R. 1 W., <br />section 22 (Ute Meridian). <br /> <br />Utah. Grand San Juan. Wavne and Garfield Counties. The Colorado River <br />and its 100-year floodplain from Westwater Canyon in T. 20 S., R. 25 E.. <br />section 12 (Salt Lake Meridian) to full pool elevation, upstream of <br />North Wash. and including the Dirty Devil arm of Lake Powell in <br />T. 33 S., R. 14 E., section 29 (Salt Lake Meridian). <br /> <br />New Mexico San Juan Countv' and Utah. San Juan Countv. The San Juan <br />River and its 100-year floodplain from the Hogback Diversion in <br />T. 29 N.. R. 16 W.. section 9 (New Mexico Meridian) to the full pool <br />elevation at the mouth of Neskahai Canyon on the San Juan arm of Lake <br />Powell in T. 41 S.. R. 11 E., section 26 (Salt Lake Meridian). <br /> <br />Bioloqv <br /> <br />Specific information on biological and physical habitat requirements of the <br />razorback sucker is very limited. Localized extirpation of razorback suckers <br />from some localities, coupled with the species' continued decline in numbers <br />and distribution. has made it difficult to fully understand all details of its <br />life history requirements. particularly in riverine environments. <br /> <br />In general, a natural hydrograph with a large spring peak. a gradually <br />descending limb into early summer. and low stable flows through summer, fall. <br />and winter are thought to create the best habitat conditions for endangered <br />fishes while maintaining the integrity of the channel geomorphology. Prior to <br />construction of large main stem dams and the suppression of spring peak flows, <br />low velocity. off-channel habitats (seasonally flooded bottomlands and <br />