Wilderness Landscape & Natural Heritage
John Martin Reservoir State Park is located in southeastern Colorado along the Arkansas River in Bent County, distinguished by its large reservoir created by the John Martin Dam. The park covers over 17,000 acres of water and land, with the reservoir itself providing one of the largest surface areas for boating and fishing in the region. The area lies in a semi-arid grassland ecosystem, featuring a mix of prairie and riparian habitats that support diverse wildlife, especially bird species like waterfowl and raptors. Established primarily to control flooding and provide water storage, the reservoir opened in the mid-20th century and has since evolved into a popular recreation destination.
Visitors are drawn to the park’s opportunities for fishing—targeting species such as walleye, catfish, bass, and crappie—along with boating and paddle sports on the expansive reservoir. The shoreline and surrounding prairies offer excellent wildlife viewing and photography chances, especially during migration seasons. Multiple campgrounds provide developed and primitive camping options, making it accessible for extended stays. Trails are limited but offer pleasant hiking and biking in the prairie landscape. Additionally, the park hosts seasonal hunting and snow sports in winter. Its remoteness and quiet atmosphere appeal to anglers and outdoor enthusiasts seeking less crowded natural settings in Colorado’s plains region.
