Chalco Hills Recreation Area is located in northwestern Sarpy County, Nebraska, and approximately 12 miles (19 km) west of downtown Omaha. Chalco Hills consists of 1,186 acres (4.80 km²) of which 246 acres (1.00 km²) is covered by Wehrspann Lake, an artificial reservoir. The recreation area was opened in 1988 as part of Papio-Missouri River Natural Resources District efforts to provide flood control and improve recreation opportunities.