Nelson Reservoir is a reservoir located in Phillips County, Montana, northeast of Malta and northwest of Saco, Montana, created by damming the Milk River, a tributary of the Missouri River.

It is stocked annually with 100,000 walleye[1] as well as yellow perch and northern pike.

It is a homogeneous earthfill dam originally built in 1914-1915 and enlarged in 1921–1922.

Nelson, who formed The Milk River Water User's Association to lobby for building diversion dikes and dams.

This Phillips County, Montana state location article is a stub.