Lake Shetek is the largest lake in southwestern Minnesota, United States, and the headwaters of the Des Moines River. It is located in The Lakes, an unincorporated community in Murray County a few miles north-northwest of Currie. The name Shetek is derived from "pelican" in the Ojibwe language.

The Des Moines River is a tributary of the Mississippi River in the upper Midwestern United States that is approximately 525 miles (845 km) long from its farther headwaters. The largest river flowing across the state of Iowa, it rises in southern Minnesota and flows across Iowa from northwest to southeast, passing from the glaciated plains into the unglaciated hills near the capital city of Des Moines, named after the river, in the center of the state. The river continues to flow in a southeastern direction away from Des Moines, later flowing directly into the Mississippi River.