. The Big Blackfoot River restoration progress report for 2002 and 2003 . Fish populations; Fishes; Fishery management; Trout fisheries; Stream ecology; Blackfoot River (Mont. ). Fish Populations In 2002, we duplicated fish population sampling at four long- term monitoring sites established in 1989. The combined CPUE for both bull trout and WSCT show continued static densities in Copper Creek (Figure 20). Following the fire in 2000, bull trout redd counts declined 73 % in the reach of Copper Creek compared with 2002 and declined 80% compared with the long term mean of 20 redds (1989-200
. The Big Blackfoot River restoration progress report for 2002 and 2003 . Fish populations; Fishes; Fishery management; Trout fisheries; Stream ecology; Blackfoot River (Mont. ). Fish Populations In 2002, we duplicated fish population sampling at four long- term monitoring sites established in 1989. The combined CPUE for both bull trout and WSCT show continued static densities in Copper Creek (Figure 20). Following the fire in 2000, bull trout redd counts declined 73 % in the reach of Copper Creek compared with 2002 and declined 80% compared with the long term mean of 20 redds (1989-2002). Future monitoring will attempt to assess the fire and post-fire related impacts to Copper Creek nafive Figure 20. CPUE for bull trout and WSCT > 4" for Copper Creek (1989, 1999 and 2002). Cottonwood Creek Restoration objectives: improve degraded habitat; eliminate fish losses to irrigation ditches; and restore migration corridors for native fish. Project Summary Cottonwood Creek, a large tributary to the middle Blackfoot River originating near Cottonwood Lakes, flows 16-miles to its junction with the Blackfoot River at river mile 43. Cottonwood Creek supports bull trout, WSCT, rainbow trout, brown trout and brook trout. WSCT and bull trout dominate the headwaters. Genetic testing of WSCT in Cottonwood Creek in 2003 showed no introgression (Appendix J). Rainbow trout inhabit the lower mile of stream while brook trout and brown trout dominate middle stream reaches. Impacts to fish populations and their habitats were present throughout the Cottonwood Creek drainage, although most of the identified private land problems were corrected during the 1990s. Completed restoration measures involve water conservation and water leasing, upgrading irrigation diversions with fish ladders, fish screens at large diversions, and implementation of riparian grazing changes. In 2002, the last open irrigation ditch was closed during a flood-to-sprinkler irrigation conversion. In 2
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