2016 Map of School Grove Lake

About this map

The Redwood River flows through the southern portion of this landscape at the junction of Lyon, Yellow Medicine, and Redwood Counties. This agricultural region is defined by a series of shallow basins and managed waterways, including School Grove Lake and several dry or intermittent features such as Goose Lake Bed and Twin Lake Bed. The presence of these lake beds alongside permanent bodies like Tyson Lake and Timm Lake indicates a variable prairie-pothole hydrology that has been heavily modified for drainage. This adaptation is visible in the extensive network of engineered channels, notably Judicial Ditch Number Three and County Ditch Number Forty-six, which cut across the grid of section-line roads like Co Hwy 46 and 115th Ave.