John Martin Reservoir State Park

John Martin Reservoir State Park
A view of the dam, near one of the park's campgrounds.
LocationBent County, Colorado, U.S.
Nearest cityLas Animas, Colorado
Coordinates38°04′29″N 102°55′50″W / 38.07472°N 102.93056°W / 38.07472; -102.93056
Area13,176 acres (53.32 km2)
Established2001
Visitors293,698 (in 2021)
Governing bodyColorado Parks and Wildlife

John Martin Reservoir State Park is a state park in Colorado. It contains John Martin Reservoir, which is the second largest body of water in Colorado by capacity. It is also known for being a prime birdwatching location. Bent County, Colorado has been documented to have over 400 different species of birds. The namesake reservoir of the park is created by a 118-foot tall (36 m) and 2.6-mile long dam (4.2 km), which goes by the name of John Martin Dam.

Colorado Parks and Wildlife officials released thirty black-footed ferrets into a prairie dog colony in the nearby Southern Planes Preserve in 2022.