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Published May 23, 2013, 01:16 PM

Corps study addresses Missouri River sediment

SIOUX FALLS, S.D. (AP) — The U.S. Army Corps of Engineers says a new study indicates that high discharge, short duration reservoir releases out of Fort Randall Dam could help flush fine sediment out of the Missouri River.

SIOUX FALLS, S.D. (AP) — The U.S. Army Corps of Engineers says a new study indicates that high discharge, short duration reservoir releases out of Fort Randall Dam could help flush fine sediment out of the Missouri River.

The corps says it has been concerned about the buildup of silt and sand behind Gavins Point Dam since the dam was constructed during the 1950s.

The U.S. Fish and Wildlife Service in 2003 recommended that the corps study the feasibility of hydraulic flushing to provide sand for shorebird habitat below Gavins to aid in habitat development.

Corps staff and basin stakeholders will be looking at combinations of flow, timing and infrastructure modifications that could more effectively transport sand downstream. The second phase of the study is expected to be completed by the end of 2013.

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