Water Control Manual. Flood Control Minnesota River, Minnesota. Lac Qui Parle Reservoir and March Lake Reservoir, including March Lake Dam, Lac Qui Parle Dam, Chippewa River Diversion Dam, and Watson Sag Weir, Watson, Minnesota. Revision.

The purpose of this manual is to provide guidance and instruction for project personnel and as a reference source for others who may be involved with or affected by project regulation. The scope of this manual covers all water control management activities as they related to the hydraulic and hydrologic aspects of the project. Lac qui Parle Reservoir is located on the Minnesota River in western Minnesota near the South Dakota state line. The reservoir is immediately downstream of the headwaters on the Minnesota River at Big Stone Lake.