Pool 5 Channel Management Study. Mississippi River 9-Foot Channel Project, Channel Management Program. Definite Project Report/Environmental Assessment. Pool 5, Upper Mississippi River, Buffalo County, Wisconsin and Wabasha and Winona Counties, Minnesota

摘要

The purpose of this study was to evaluate channel management in pool 5 on the Mississippi River, from Lock and Dam 5 at river mile 738.2 upstream to Lock and Dam no. 4 at river mile 752.8. Study efforts focused on measures to reduce the frequency of dredging problem areas, preventive maintenance, and using dredged material to construct islands habitat purposes. No significant navigation problems were identified aside from channel shoaling in the mid-pool reach. There has been significant decline in fish and wildlife habitat in the lower portion of pool 5 due primarily to loss of islands, sand sediments in backwater habitats, decline in aquatic vegetation and a reduction in bathymetric diversity. The primary restoration measure is the construction of five small islands in lower Belvidere Slough area using channel maintenance dredged material. Wing dam notching will also improve fish habitat.