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Frankenmuth Dam Fish Passage, Cass River, Saginaw County, Michigan

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Final rept.

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This document addresses the potential environmental impacts associated with the proposed action which includes the construction of fish passage at the Frankenmuth Dam on the Cass River in Saginaw County, Frankenmuth, Michigan. The proposed action is being accomplished under Section 506 Great Lakes Fishery and Ecosystem Restoration of the Water Resources Development Act WRDA of 2000 42 U.S.C. 1962d-22c, PL 106-541, as amended. Alternatives considered include a fish bypass channel, a rock ramp, a spiral fish ladder, dam removal, and no federal action. The preferred alternative is construction of a rock ramp starting approximately 350 feet downstream of the Frankenmuth Dam and creating rock weirs and resting pools along a gradual slope approximately 2.9 up to and encompassing the existing dam s footprint. The rock ramp would provide passage for fish species targeted for recovery in the Great Lakes i.e., walleye. An Environmental Assessment EA for the proposed action has been completed. The Draft EA and Preliminary Finding of No Significant Impact FONSI were made available to the public for a 30 day review period beginning February 3, 2012. USACE attended a public information meeting in the City of Frankenmuth on February 28, 2012 to discuss the proposed action and answer questions. Comments regarding the proposed action were received and responded to none of which were significant in nature. This EA indicates that the preferred alternative would not result in significant environmental impacts on the quality of the human environment. Adverse effects would include short-term noise, air emissions and traffic from construction equipment operation temporary, minor turbidity during construction activities temporary displacement of fish and wildlife during construction destruction of bottom dwelling organisms in the immediate work area minor removal of vegetation along the proposed access roads and possible increased passage of the sea lamprey.

Subject Categories:

  • Ecology
  • Hydrology, Limnology and Potamology
  • Civil Engineering
  • Environmental Health and Safety

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