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City of Big Rapids, Michigan Dam Removal from the Muskegon River |
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Natural System and Location:
Muskegon River within the state of Michigan. The City of Big Rapids will remove the Muskegon River Dam remnant, restoring natural hydrological and ecological conditions to the largest free-flowing reach of high-gradient river in the Great Lakes Basin. The dam removal work plan involves upstream sediment dredging, downstream sediment traps and restoration of natural flow and river bottom elevation. The Michigan DNR and USGS will evaluate the biological, chemical, and physical conditions of the river before and after removal. The project will reconnect upstream and downstream habitat and reestablish the riffle, pool, and run sequence of the river.
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Hypothesis/Goal:
To remove a manmade obstruction from the Muskegon River thereby promoting natural sediment and bio-migration by reconnecting the Muskegon River.
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Restoration Strategy:
The removal of the dam and management of the impounded sediment released.
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Anticipated Outcomes/Environmental Affects:
The dam is to be removed with as little release of impounded sediment upstream of the dam. Desired effects include, minimal adverse quality if life reduction for downstream reparian rights owners, improved Muskegon River ecosystems, reduced City liability and improved safety for river users.
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Progress to Date:
Upstream hydro-dam removed August 20, 2000. Initial sediment controls very successful. Downstream sediment accumulation above secondary trap will need to be managed. USGS Water Resources Division (Lansing) continues to monitor impacts of removal. Temporary cofferdam removed. Sediment volumes and associated sediment management costs were significantly less than originally anticipated. Staff is working with project manager to evaluate reallocation of project funds to add value to an already successful project. GLPF staff met with USGS Lansing personnel on December 19 to review sediment-monitoring program. USGS website has been updated and fact sheets are in prep.
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| URL: www.ci.big-rapids.mi.us/damremoval/outline.htm |
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