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LIST OF FIGURES Figure Paqe 4 Combined catch per unit effort (Fish/h) versus flow for four sub-adult and adult native fishes (BH, FM, RT, CS) and three sub-adult and adult nonnative fishes (CP. WS, CC,) collected with electrofishing in the plunge pool and 2.2-mile reach of the Lower Gunnison River, 30 March to 7 November 1995 . . . . . . . . . . . . . . . . . . . . . . . 18 5. Comparison between total catch per unit effort (Fish/h) for sub-adult and adult Colorado squawfish collected by electrofishing in the plunge pool immediately downstream of the Redlands Diversion Dam and in the 2.2-mile reach of the Lower Gunnison River, Colorado, March 1994 to November 1995 ............................. 19 6. Plan view of the 2.3-mile reach of the lower Gunnison River and the location and widths of the 27 transects surveyed by the Bureau of Reclamation during April 1993 . . . . . . . . . . . . . . . . 21 7. Plan view of the 2.3-mile study area of the lower Gunnison River between the Redlands Diversion Dam and the confluence with the Colorado River . . . . . . . . . . . . . . . . . . . . . . . 24 8. Mean daily flow (cfs) and shape of the hydrograph for five low-water years (1972, 1977, 1981, 1989, and 1990) compared to 1990, a low, low-water year from 1 May to 31 October in the 2.3-mile reach of the lower Gunnison River between the Redlands Diversion Dam and the confluence with the Colorado River (top) . . . . . . . . . . . . . . . . 32 9. Mean daily flow (cfs) and shape of the hydrograph for five moderate-water years (1969, 1973, 1975, 1982, and 1992) compared to.1992, a low, moderate-water year from 1 May to 31 October in the 2.3-mile reach of the lower Gunnison River between the Redlands Diversion Dam and the confluence with the Colorado River . . . . . . . . . . . . . . . . . . . . . 33 vi