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Stubb Dam to the Grand Valley Irrigation Dam and Corn Lake to Westwater Ranger Station. Some warmwater reaches in the Upper Colorado River in western Colorado (e.g., Government Highline Dam to Price-Stubb Dam) and eastern Utah (e.g., Westwater Ranger Station to Westwater Wash, RMs 128-124.8) were not sampled, whereas other reaches were sampled more than others (e.g., 15- and 18-mile reaches). The river miles and dates sampled from 1995-2001 and the actual electrofishing and seining effort expended sampling the Upper Colorado and Gunnison rivers are provided in Appendix; Table B.1. Other ongoing, short-term RP projects also reported incidental recaptures of stocked razorback sucker from 1996-2001. Stocked razorback sucker were collected in the fish trap at the Redlands Diversion Dam passageway (Burdick 2001; Burdick 2002(c) [No. C-4b]), from irrigation canals (Martinez 2001, 2002 [No. CAP 18/19]) and from various riverine and oil channel floodplain habitats with seines (Trammel et al. 2002 [No. 87b]; Meismer and Hudson 2001 [No. 87a]), trammel nets (Osmundson 2002 [No. 22-A-2]), electrofishing (Osmundson 2003 [No. 89]); Burdick 2002(a) [No. 105]), and trap nets (Burdick 2002(b) [No. C-6-GP]) during other approved RP investigations. Recaptures of stocked razorback sucker were also reported in the Colorado River in Colorado (personal communication, Rick Anderson, Colorado Division of Wildlife [CDOW]), in the Colorado River in Utah (personal communication, Steve Meismer, Utah Division of Wildlife Resources [UDWR]) and in the Green River in Utah (personal communication, Peter Cavalk UDWR). At recapture, all razorback sucker were checked for the presence of a PIT tag, weighed (g), and measured (TL). Other data recorded were recapture location (river and RM) and date. In some instances, the PIT tag of some recaptured razorback sucker was not recorded because investigators did not have a PIT tag reader/scanner available. Return rates of stocked razorback sucker were determined from recaptured fish. Only razorback sucker that had been at large for at least 6 months following stocking were used to determine return rates and report habitat of recaptured fish. It was believed that fish that survived the first 6 months following stocking had likely adapted to riverine conditions, and it was further assumed that they were likely to continue to survive. This time period was selected by the author. None of the domestic-reared razorback sucker stocked from 1995 to 2001 were implanted with radio transmitters. Displacement was reported as upstream and downstream displacement and was defined as the respective distance between the release site and recapture point. 12