Larson Lake is a small natural lake covering approximately 154 acres in southwest North Dakota, located half a mile north and 2 miles east of Regent in Hettinger County. This shallow water body has an average depth of 5.9 feet with a maximum depth reaching 11.6 feet. The lake is classified as a Class III fishery, capable of supporting natural reproduction and growth of warm water species. Characterized as hypereutrophic with high nutrient concentrations and dense algal growth, Larson Lake experiences summer thermal stratification. The surrounding watershed encompasses about 19,500 acres of predominantly grassland, pasture, and agricultural land, with spring wheat, hay, and corn being the primary crops grown in the area.