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. The Big Blackfoot River restoration progress report for 2002 and 2003 . Fish populations; Fishes; Fishery management; Trout fisheries; Stream ecology; Blackfoot River (Mont. ). Executive Summary The 2002 and 2003 reporting period was a time of continued drought in the Blackfoot Watershed. The drought began in 2000 and involved elevated summer water temperatures, below normal mid-summer and winter flow conditions, and extreme wildfires. The drought contributed to fish population declines in the Blackfoot River and many tributaries. Despite the drought, fish populations in many restored stream

. The Big Blackfoot River restoration progress report for 2002 and 2003 . Fish populations; Fishes; Fishery management; Trout fisheries; Stream ecology; Blackfoot River (Mont. ). Executive Summary The 2002 and 2003 reporting period was a time of continued drought in the Blackfoot Watershed. The drought began in 2000 and involved elevated summer water temperatures, below normal mid-summer and winter flow conditions, and extreme wildfires. The drought contributed to fish population declines in the Blackfoot River and many tributaries. Despite the drought, fish populations in many restored stream Stock Photo
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Library Book Collection / Alamy Stock Photo

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RHT9WD

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7.1 MB (249.3 KB Compressed download)

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2130 x 1173 px | 36.1 x 19.9 cm | 14.2 x 7.8 inches | 150dpi

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. The Big Blackfoot River restoration progress report for 2002 and 2003 . Fish populations; Fishes; Fishery management; Trout fisheries; Stream ecology; Blackfoot River (Mont. ). Executive Summary The 2002 and 2003 reporting period was a time of continued drought in the Blackfoot Watershed. The drought began in 2000 and involved elevated summer water temperatures, below normal mid-summer and winter flow conditions, and extreme wildfires. The drought contributed to fish population declines in the Blackfoot River and many tributaries. Despite the drought, fish populations in many restored streams responded positively to riparian improvements. Compared with 2000, total trout densities (> 6.0") declined at two long-term monitoring locations (Johnsrud and Scotty Brown Bridge) on the Blackfoot River in 2002. Declines occurred primarily with small-to-intermediate rainbow trout in the lower river (Johnsrud section), whereas densities of larger rainbow trout increased. Westslope cutthroat trout (WSCT) densities (> 6.0") remained generally stable between 2000 and 2002 after gradually increasing through the 1990s. Densities of Blackfoot River bull trout (> 6.0"), also increasing through the 1990s, were generally stable in the lower river between 2000 and 2002 (increase in the Johnsrud section and a decline in the Scotty Brown section). Densities of lower Blackfoot River brown trout (> 6.0"), also increasing through the 1990s, were similar between 2000 and 2002 (Results Part II). In 2002, we established a new Blackfoot River population survey site - the Wales Creek section (river miles 60.0 to 66.2) downstream of Nevada Creek. This survey section supported much lower total trout densities (> 6.0") than earlier up-river (near Arrastra Creek) surveys (Pierce et al. 2000) and lower Blackfoot River survey sections (Figure 1). Because of very low densities, we were unable to generate population estimates for bull trout, WSCT and rainbow trout

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