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232 100 C 80 O N Q 60 E O U C 40 O U L O IZ 20 83 84 85 83 84 85 87 88 89 90 83 84 85 89 90 Year Above reservoir Reservoir basin Below dam 0 Native ? Non-native Fig. 2. Percentage comparison of native and non-native fishes sampled above Kenney Reservoir basin. within the basin and reservoir following completion, and downstream of Taylor Draw Dam. 1983-1990. comprised the greater proportion in samples near- est to the Colorado/Utah stateline. These studies in- dicate prior to this investigation, the ichthyofauna of the White River within the section described in this paper was dominated by native species. Methods Fish samples were taken above the reservoir basin from RK 176.9-184.6 (1983-1985), within the river and basin encompassed by the reservoir from RK 167.9-176.8 (1983-1985, 1987, 1989-1990), and be- low Taylor Dam from RK 115.5-167.8 (1983-1985 and 1989-1990). Sampling in the river was perform- ed by various combinations of seining, electrofish- ing, gill netting, and drift nets, typically from June to October. Details of these samplings are given in Martinez, Chart (1987) and Trammell (1991). Sein- ing was performed in backwater and low velocity habitats using a 4.5 xl 2 m two-man seine with 15 mm mesh.?Electrofishing (pulsed DC) from a boat was performed during the day along shoreline areas in all habitat types. Gill nets (multifilament 45.7 x 3.6 m x 19 mm square mesh or 30.5 m x 1.5 m x 19 mm square mesh) were used immediate- ly below the dam and in the reservoir. Drift nets (0.6 m x 2.4 m frames holding, 1.2 m diameter trawls fitted with 6.3 mm mesh) were set in the channels directly below the spillway. In addition to gill nets, sampling in the reservoir was conducted using bag seines and electrofishing, gear. The seine, 12.2 x 1.2 m. 9.5 mm wing mesh and 3.2 mm bag mesh, was used to sample shoreline areas. Electrofishing was