Smithville Reservoir is a popular recreational destination located near Smithville, MO in Missouri. It was created in 1972 as a result of the construction of the Smithville Dam on the Little Platte River. The reservoir has a capacity of 7,200 acre-feet of water, and its primary purpose is to provide flood control for the Kansas City metropolitan area.

The reservoir is fed by several small streams that flow into the Little Platte River. The Little Platte River is the primary surface flow provider for the reservoir. During the winter months, the reservoir is also fed by snowmelt from the surrounding fields and hills.

In addition to flood control, the reservoir is also used for recreation and agricultural purposes. The lake provides opportunities for boating, fishing, and swimming, and the surrounding area is popular for hunting and wildlife watching. The reservoir also serves as a source of irrigation water for nearby agricultural fields. Overall, Smithville Reservoir is an important resource for the local community and surrounding areas.