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DRAFT A small reproducing population of Colorado squawfish exists in the San Juan River. A single juvenile squawfish was captured in the San Juan River just below the confluence of McElmo Creek near Aneth, Utah, in 1.978 (Minckley and Carothers-1980; VTN 1978). Platania summarized captures of squawfish in New Mexico and Utah from 1987 to 1989. Eight adults and 19 young-of-the-year were captured (two additional adults were observed but not captured). Except for one adult captured in the San Juan arm of Lake Powell, the adults were captured in the San Juan River between River Mile (RM) 89 near Bluff, Utah, and RM 163 near Shiprock, New_Mexico. in 1987, 18 young-of-the-year were collected from the San Juan River. Two were collected downstream of Shiprock, New Mexico (Plantania 1990), six near Bluff, Utah, and 10 in the Lake Powell inflow area. A young-of-the-year captured in 1988, also was taken from this inflow area. In 1990, another young-of-the-year was collected near Bluff, Utah (Bill Bates, Utah Division of Wildlife, pers. comm.). In the Lower Colorado River Basin (Lower Basin), Miller and- Lowe (1964), and Minckley and Deacon (1968) considered Colorado squawfish extirpated from the Gila River system, and Minckley (1973, 1919) ]ater expanded this to include all Arizona waters except above Glen Canyon Dam in Lake Powell. No Colorado squawfish (other than stocked fish) have been taken from the Gila River basin since 1950 (Miller 1961);_ a 1958 record of this species from the Salt River, Arizona (Branson et al. 1966), was based on misidentified roundtail chub, Gila robusta (R.R. Miller pers. comm. to W.L. Minckley). The last-adult squawfish from the mainstem lower Colorado River was taken by a fisherman in 1967 in Lake Mohave (Minckley and Deacon 1968). Although natural populations of the species were extirpated from the Lower Basin, hatchery-reared Colorado squawfish have been introduced in several locations. More than 96,000 fingerling and 442 larger Colorado squawfish, 355-405 mm (14-16 in.) total length [TL], were introduced at six locations on the Salt and Verde rivers, Arizona, in 1985 (Brooks 1986). Seven of-the larger squawfish were captured in experimental trammel nets within 10 days after stocking, and five more fish of the larger size group were captured about 5 months after stocking. In 1987, 31,750 fingerling Colorado squawfish from Dexter National Fish Hatchery were stocked at two sites in the-Salt River drainage (including 6,750 into Canyon Creek) and 100 Colorado squawfish were stocked into the Verde River. Arizona Game and Fish Department biologists recaptured three in Canyon Creek, and one in the Salt River. In 1988, Dexter National Fish Hatchery personnel stocked 24,000 fingerlings into the Salt River, 18,000 into Canyon Creek, and 89,303 into the Verde River. Bubbling Ponds State Fish Hatchery personnel stocked 120,604 fingerlings into the Verde River and 1,194 into Sycamore Creek, a tributary to the Verde River. In 1988, 57 Colorado squawfish were recaptured on Verde River, and six from the Salt River. Recaptures during both years included fish which had been at large for 3 months to 1 year (Dean Hendrickson, Arizona Game & Fish, pers. comm.). Colorado squawfish stockings continue in the Salt and Verde rivers, and expansion of the program is planned.