Idaho For catching sturgeon from the bank, you can't beat fishing on the Snake River at Eagle Rock, between Rupert and Pocatello in south-central Idaho. A four-foot sturgeon is average for this reach of the river. Downstream, both near C.J. Strike Reservoir and farther down in Hells Canyon, sturgeon reach seven and sometimes eight or nine feet. The bait that appeals to Eagle Rock sturgeon will also catch oversize brown trout, chunky rainbows, even catfish and bass.