The Elk River Archeological District is a 14,807-acre (59.92 km2) historic district in Elk County, Kansas and Montgomery County, Kansas which includes 69 contributing sites.
It was listed on the National Register of Historic Places in 1978 for its information potential.
Several of the sites were discovered when the river was dammed to create the lake or in subsequent surveys of the surrounding area.
The sites represent evidence of continuous human habitation in the Elk River Valley from the Archaic period through the present day, with the earliest sites dating to circa 2000 B.C.
This article about a property in Kansas on the National Register of Historic Places is a stub.