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<br />Revised Supplemental Draft Environmental Assessment-Chapter 2-Altematives <br /> <br /> <br />Figure 2-Redlands Conventional Fish Ladder on the Gunnison River, Colorado <br /> <br />Constructed simultaneously, attraction flows could be incorporated into the hydropower <br />plant. Also if fish passage were constructed first, it would present site constraints on <br />hydropower plant construction. The Biology Committee of the Recovery Program does <br />not support two conventional fish ladders in close proximity due to biological concerns. <br /> <br />Design <br /> <br />'(he fi sh ladder would be built on the right bank of the river I . Conceptual designs for the <br />dl'\'c1opment of the site show the ladder on the same side ofthe river as the power plant <br />Intake of the proposed Jacobson Hydro No.1 Project (see Figure 3). The ladder would <br />consist of a 200 to 300 foot-long concrete channel, 6 feet in width, and 8 to 10 feet deep <br />similar to the fish passage constructed at the Redlands Diversion Dam (Figure 2). About <br />~5 efs of river flow would be diverted into the channel for the ladder. The upstream <br />entrance to the channel would have a trash rack to prevent debris from entering the fish <br />ladder. Baffles (vertically placed plates) would divide the ladder into a series of small <br />Jlools; fish would swim from pool to pool through openings in each baffle. The baffles <br />would be placed at appropriate intervals to keep flows at velocities that native fish can <br />swim against. The site would be fenced with a 6 foot-high fence for facility and public <br />safety. An existing access road would be used along the right-bank of the river to <br />provide construction and maintenance access. <br /> <br />I Right bank refers to the right side of the river as viewed when looking downstream. <br /> <br />9 <br />