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<br />4. All fish found in the fish trap were counted and sorted by <br />species. All native fish were released upstream of Redlands <br />Diversion Dam. Most of the carp collected in the trap were <br />removed; all other nonnative fish were returned downstream of <br />the dam. None of the native fish captured in the fish trap <br />were fin-clipped in 1997. <br /> <br />RadiotrackinQ <br /> <br />1. Twelve adult Colorado squawfish were implanted with 360-day <br />radiotags during April. May, and June. Two fish were <br />captured from the 2.3-mile reach of the Lower Gunnison River. <br />one was captured in the channel connecting Gardner Pond with <br />the Colorado River and four from Pickup Pond in the IS-mile <br />reach of the Colorado River, and four from Walter Walker <br />State Wildlife Area (WWSWA) in the 18.mile reach of the <br />Colorado River. Three of the radiotagged fish were released <br />at river mile 3.0 in the Lower Gunnison River. four at WWSWA, <br />and five in the channel connecting Gardner Pond with the <br />Colorado River. <br /> <br />2. The spatial and temporal movements of radiotagged adult <br />Colorado squawfish were monitored by tracking fish from boats <br />and by three semi-permanent, land-based tracking stations <br />that were installed in April in the 2.3-mile reach of the <br />Lower Gunnison River. These stations were located at the <br />Redlands Diversion Dam. one at river mile 2.4, and one at <br />river mile 1.4. The station at the dam had seven antennae to <br />monitor movement of fish at seven different points, 1) <br />downstream of the plunge pool. 2) in the plunge pool. 3) <br />three in the fishway itself. and 4) two upstream of the fish <br />trap. Each of the two downstream stations were equipped with <br />two antennae. <br /> <br />3. Contact was established and maintained until August 1997 with <br />four of the 11 squawfish that were implanted with radiotags <br />in 1996. By late-October, contact was made with nine of <br />eleven fish radiotagged in 1997. Unfortunately, the radiotag <br />and carcass of one Colorado squawfish implanted in June 1997 <br />was found in WWSWA in August./ One fish was never contacted <br />following its release in the~nnel connecting Gardner Pond <br />with the Colorado River. None of the fish radiotagged in <br />1996 or 1997 were detected using the fishway, at Redlands. <br />However, four radiotagged fish were detected in the plunge <br />pool immediately downstream of the Redlands Diversion Dam <br />plunge pool in 1996 and two squawfish radiotagged in 1997 <br />were intermittently detected about 0.1 mile downstream of the <br />Redlands Diversion Dam plunge pool during late-July and mid. <br />September. Two other squawfish radiotagged in 1997 occupied <br />a lower section of the 2.3-mile reach of ,the Lower Gunnison <br />River in mid-July and mid.September but were not detected by <br />monitoring equipment in or immediately downstream of the <br />plunge pool. <br /> <br />At some time during 1997. the three radiotagged fish that had <br /> <br />4 <br />