Upper Mississippi River System - Environmental Management Program Definite Project Report (R1) for Construction. Monkey Chute Restoration Project. Pool 21, Upper Mississippi River, Marion County, Missouri.
ARMY ENGINEER DISTRICT ROCK ISLAND IL
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The Monkey Chute project area is in Pool 21 of the Upper Mississippi River at the downstream end of an old Mississippi River side channel located just upstream of Lock and Dam 21 at approximate river mile 326. The chute occupies 88 acres of open water west of the navigation channel on Federal land managed by the State of Missouri. The upstream end of the chute was cut off many years ago by deposition of sediment. Monkey chute is extensively used by waterfowl, particularly during the spring migration. Fishery studies have shown that it is a very productive fish area as well. The purpose of this project is to retain 88 acres backwater lake as year-round fish habitat, as well as to maintain its suitability for waterfowl and furbearers. The project will help to maintain the otherwise vanishing backwater habitat which is a critical part of the Upper Mississippi River system ecosystem. An incidental effect will be increased recreational use of the chute. The proposed project involves hydraulically dredging a channel from the main channel to return depth to 6 feet at normal pool, thereby providing fresh water to the chute under all pool conditions. The channel follows the existing chute to minimize dredging.
- Civil Engineering