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. make spawning migrations (Reid 1971 and Moyle 1976). Miller et ale (1982b) reported extensive movement by adult Colorado squawfish in the Green River with greatest migratory behavior associated with the spawning period. They also reported evidence of homing behavior with fish returning after extensive migration to areas where they were originally captured. Observations made during 1982 showed independent movement by Colorado squawfish from the White River to separate spawning sites on the Green and Yampa rivers. The one squawfish that remained in the White River through July provides further evidence that squawfish may spawn in the White River, but to date, spawning has not been confirmed. It appears if spawning does occur in the White River total fish numbers are probably low. By 1 August, no telemetered fish remained in the White River. None of the telemetered fish that moved into the Green River in June and July had returned to the White River by 24 November. Miller et ale (1982a) reported a radio-tagged fish ~ad traveled from the White River into the Green River to Gray Canyon, then returned to the White River in September. The one fish which exhibited a similar migration pattern also traveled back upstream, but had only reached RM 217.5 of the Green River, 28.8 mi (46.3 km) below the White River by the end of November. It is unknown whether this fish eventually returned to the White River. . . . . . . . Systematic Sampling of River Habitats Standardized sampling of a 5.0-mi (8.0-km) station in each of the three strata was completed between 15 and 25 June (runOff) and between 7 and 16 September (post-runoff). Electrofishing was the most effective . . 23 .