US Army Corps of Engineers
Detroit District Website Website

Public Notice Manager

Manistique River Sea Lamprey Barrier Public notice

Published May 21, 2018
Expiration date: 6/15/2018


The U.S. Army, Corps of Engineers (USAGE), Detroit District, has completed an Environmental Assessment (EA) addressing the proposed construction of a sea lamprey barrier dam immediately downstream of the existing MPI Dam located on the Manistique River, Schoolcraft County, Manistique, Michigan. The EA may be reviewed on line at Go to the category "Other Public Notices" in the lower left corner of the webpage. A paper copy of the EA may be reviewed during normal business hours at the Manistique School and Public Library reference desk, 100 North Cedar Street, Manistique, Ml 49854 [telephone number: (906) 341-4316], the Manistique City Hall, 300

N. Maple Street, Clerk's Office and the U.S. Post Office lobby, 301 S. Cedar Street, Manistique. A paper copy of the EA may be obtained by writing to the USAGE address identified below. The EA, which contains more detailed information about the proposed activity and its potential impacts, is incorporated by reference into this notice.

Alternatives considered for the proposed project include: Alternative 1, construction of a cantilevered steel sheet pile wall immediately downstream of the existing dam; Alternative 2, construction of a steel post and concrete panel wall on top of the existing sill of the MPI dam; and Alternative 3, no Federal action. Alternative 1 is the recommended alternative and consists of the installation of 360 linear feet of steel sheet piling (SSP) to form the dam with an 18 inch drop to block lamprey migration during a 15 year river discharge event, removal of the entire MPI center flume wall (2,875 feet), and placement of 13,500 cubic yards of fill to construct an earthen berm in 0.8 acres of wetland to prevent lamprey from bypassing the new SSP barrier. Installation of the SSP barrier will raise water levels approximately one and one half feet in about 300 acres of Jamestown Slough located upstream resulting in the change in wetland types in about 16 acres of existing wetlands. The inundation will create about 2 acres of new wetlands from uplands.

The EA includes a Section 404(b)(1) Evaluation, pursuant to the Clean Water Act (CWA), for placement of fill material into the waters of the United States. Any person who has an interest that may be affected by the discharge and/or disposal of fill material may request a public hearing. To be considered, the request must be submitted in writing to the contact provided below within the comment period of this notice and must clearly set forth the interest that may be affected and the manner in which the interest may be affected by this activity.

This EA includes the USA CE Section 106 of the National Historic Preservation Act effect determination. Any person who has an historical or cultural interest that may be affected by the proposed action may submit comments. The comments must be submitted in writing within the comment period of this notice (as described below) and must clearly state what historical or cultural interest may be affected by this activity. You may also submit comments by email to:

Environmental review of the proposed action indicates that no significant cumulative or long-term adverse environmental impacts would be expected as a result of project implementation. The identified adverse effects would be minor, including short-term noise and air emissions from construction equipment operation. A Clean Water Act Section 401 water quality certification, or waiver thereof, would be obtained from the State of Michigan prior to beginning construction by the non-Federal sponsor through the state permit process.

This Public Notice is being issued pursuant to the National Environmental Policy Act to the

  1. Environmental Protection Agency, U.S. Fish and Wildlife Service, the State of Michigan, other Federal, state, and local agencies, tribes and tribal interests, and other interested groups and individuals for the purpose of providing information and to solicit comments and views relative to the proposed construction activity. Comments you may have concerning the proposed activity should be made within thirty (30) days from the date of this notice. If no comments are received by the end of the thirty (30) day review period, it will be assumed that you have no comment. Please direct your comments to:
  2. Army Engineer District, Detroit ATTN: CELRE-PLE (Charles A. Uhlarik) 477 Michigan Ave. Detroit, Michigan 48226-2550

Following the comment period and a review of the comments received, the USAGE Detroit District Engineer will make a final decision regarding the necessity of preparing an Environmental Impact Statement (EIS) for the proposed work. If any received comments identify significant impacts to the quality of the human environment, the project may be modified to reduce the level of impact, the work cancelled or a notice of intent to prepare an EIS could be published. Based on the conclusions of the EA, it appears preparation of an EIS will not be required; therefore, a preliminary Finding of No Significant Impact (FONSI) has been included in the EA. The preliminary FONS! concludes that implementing the proposed action does not constitute a major Federal action that significantly affects the quality of the human environment.