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the Recovery Goals were developed; however, it also was recognized that the accuracy of <br />the estimates vary among populations. Monitoring of Colorado pikeminnow populations <br />is ongoing, and sampling protocols and the reliability of the population estimates are <br />being assessed by the Service and cooperating entities. <br />Estimates of wild adult Colorado pikeminnow in the middle and lower Green River <br />ranged from 3,100 adults in 2001 and 2,300 adults in 2003 (Bestgen et al. 2004). In the <br />Colorado River estimates of wild adults ranged from about 450 in 1992 to about 780 in <br />2003. To date approximately 4,426 hatchery-produced subadult Colorado pikeminnow <br />have been stocked into unoccupied reaches of the Colorado River in the Upper Basin. In <br />the San Juan River an estimate of about 20 wild adults was based on data collected in the <br />early to mid-1990s. Over 668,000 juveniles Colorado pikeminnow were stocked in the <br />San Juan River in 2002-2004. Approximately 300,000 juveniles were stocked in the fall <br />of 2005. <br />Critical Habitat <br />Critical habitat for the Colorado pikeminnow was designated in 1994 within the 100-year <br />floodplain of the Colorado pikeminnow's historical range in the following area of the <br />upper Colorado River (59 FR 13374). Colorado pikeminnow now only occur in the <br />upper Colorado River basin (upstream of Lee Ferry just below the Glen Canyon Dam). <br />Most of Lake Powell is not suitable habitat for Colorado pikeminnow and is not <br />designated critical habitat. The total designated miles is 1,148 and represents 29 percent <br />of the historical habitat for the species: <br />Moffat County, Colorado. The Yampa River and its 100-year floodplain from the <br />State Highway 394 bridge in T. 6 N., R. 91 W., section 1 (6th Principal Meridian) <br />to the confluence with the Green River in T. 7 N., R. 103 W., section 28 <br />(6th Principal Meridian). <br />Uintah, Carbon, Grand, Emery, Wayne, and San Juan Counties, Utah; and Moffat <br />County, Colorado. The Green River and its 100-year floodplain from the <br />confluence with the Yampa River in T. 7 N., R. 103 W., section 28 (6th Principal <br />Meridian) to the confluence with the Colorado River in T. 30 S., R. 19 E., section <br />7 (Salt Lake Meridian). <br />Rio Blanco County, Colorado; and Uintah County, Utah. The White River and its <br />100-year floodplain from Rio Blanco Lake Dam in T. 1 N., R. 96 W., section 6 <br />(6th Principal Meridian) to the confluence with the Green River in T. 9 S., <br />R. 20 E., section 4 (Salt Lake Meridian). <br />Delta and Mesa Counties, Colorado. The Gunnison River and its 100-year <br />floodplain from the confluence with the Uncompahgre River in T. 15 S., R. 96 <br />W., section 11 (6th Principal Meridian) to the confluence with the Colorado River <br />in T. 1 S., R. 1 W., section 22 (Ute Meridian). <br />13