West Okoboji Lake is located near Milford, IA in Iowa and is one of the few natural lakes in the state. Lakeside Lab, which is situated on the lake, is a research facility that studies the ecology and hydrology of the area. The lake has a history of being an important recreational spot for tourism in the region. The hydrology of the lake is affected by both surface water flow and snowpack. The lake receives water from the Little Sioux River and its tributaries. The snowpack in the region contributes to the water supply of the lake during the spring and summer months. The lake is also used for agricultural purposes, with farms near the lake using the water for irrigation. Recreational activities such as boating, fishing, and swimming are popular on the lake.