Boardman River Feasibility Study - Alternative 41 (Draft)

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Environmental Consulting & Technology, Inc.
Boardman River Dam Project ; Alternative 41
This fact sheet is a summary of a detailed analysis of the alternative described below. The alternative was selected for detailed analysis along with five (5) other alternatives by the Boardman River Dams Committee. The following information is provided as a summary of the analysis of the alternative. Information on the existing conditions and impacts of this alternative can be obtained by reviewing the complete report on the website. You may notice that the description of the analysis of the alternative sometimes includes at the end of certain sentences an alphanumeric code in parentheses. This code refers to the list of questions that was included in the Request for Proposals.
This option will consist of modifying all of the dams by adding fish ladders and fish passageways at all of the dams, improving the spillway at Boardman Dam, and constructing a bottom draw structure at Brown Bridge Dam. The DNR weir operation on the Boardman River would be maintained. The fish ladder at Union Street would be replaced with a passage way that would maintain the current Boardman Lake level, but would allow the passage of fish from the Great Lakes into the Boardman River and vice versa. Sabin Dam would be maintained, but a fish passageway would be installed to allow fish passage at the dam. Boardman Dam would be retained and the penstocks altered to meet the requirements of the MDEQ. A fish passage structure would be installed to allow fish to pass at the dam. The Brown Bridge Dam would be modified to allow fish passage at the dam and a bottom draw system will be installed to potentially mitigate the impact of warm water discharge from the impoundment on downstream coldwater habitat.