Prairie Coteau Watershed Improvement & Protection Project

Minnewasta Lake receives most of its water from groundwater discharged from the surrounding Waubay Aquifer.  Its small watershed is comprised mainly of cropland and the lakes water quality is highly influenced by direct runoff from shoreline activities.  Minnewasta Lake is located in central Day County.



Minnewasta Lake

Maximum Depth: 14 feet 

Mean Depth: 10.5 feet

Lake Volume: 6,310 acre-ft

Surface Area: 601 acres 

Shoreline Length: 5.5 miles

Watershed Acres: 2,564 acres

Warm Water Permanent Fisheries: black bullhead, black crappie, bluegill, common carp, emerald shiner, fathead minnow, Iowa darter, northern pike, orange -spotted sunfish, walleye, white bass, white sucker, yellow perch. 


For more information on Minnewasta Lake, click on the following links:



Watershed Map


SD GF&P Lake Contour Map