Lake with ducks and swam

John Martin Reservoir Vacation Rentals

John Martin Reservoir

Show on map
John Martin Reservoir
Show on map

Why Rent On John Martin Reservoir

In Colorado’s southeastern plains, John Martin Reservoir sprawls across 11,600 acres as the state’s second-largest body of water. Nicknamed the “Sapphire on the Plains,” it was created by the John Martin Dam on the Arkansas River and serves flood control and irrigation purposes. It’s one of Colorado’s top birdwatching areas, designated as a Globally Important Bird Area, with over 400 species observed, including bald eagles and whooping cranes. Boating, water skiing, and jet skiing are popular here, with two campgrounds and ample shoreline for fishing. Anglers hook up catfish, walleye, and white bass. Located within John Martin Reservoir State Park, this vast, open-water lake offers a contrast to the alpine lakes of the Rockies—trading peaks for prairie sky and boundless horizons.

Best time to go
Late spring, from late May to mid-June, unveils John Martin Reservoir in its finest light. Crystal-clear waters beckon anglers and kayakers alike, while wildflowers bloom along sunlit shores. Enjoy tranquil days with fewer tourists, offering a serene escape into nature's embrace.
Water Quality
John Martin Reservoir's water is often described as sapphire, reflecting its deep blue hue. The water clarity is typically crystal-clear, offering excellent visibility for recreational activities.
Surface area (mi)
29.32
Max depth (ft)
59.06
Elevation (ft)
4642.39
Shoreline length (mi)
21.75

Popular activities

  • Boating
  • Swimming
  • Fishing
  • Hiking
pencil

Information not accurate?

Help us improve by making a suggestion.

Frequently Asked Questions

Ready to dive into what John Martin Reservoir has to offer? Let’s tackle some of the burning questions you might have as you plan your visit!

  • Yes, swimming is allowed in specific times and areas. Swimming is permitted in Lake Hasty and John Martin Reservoir from sunset to sunrise and at least 150 feet away from boat ramps, marinas, and other designated areas. The Lake Hasty swim beach is open from Memorial Day to Labor Day.

  • John Martin Reservoir is a popular destination because it offers excellent fishing, uncrowded boating, and water sports. The reservoir also provides modern campgrounds, various wildlife, and historical sites, making it a versatile place for recreation and nature lovers. It is located in a peaceful area of the Lower Arkansas River Valley.

  • At John Martin Reservoir, fishing is prohibited from the dam and within 100 feet of the dam or walleye spawning nets from March 1 to April 15, or until walleye spawning operations are complete. This regulation is in place to protect walleye during their spawning season. Hunting is also allowed in the adjacent State Wildlife Area.

  • There are no lifeguards on the beaches at John Martin Reservoir. Swimming is allowed in designated areas from Memorial Day to Labor Day, but swimmers are on their own risk. Life jackets are recommended for those who swim.

  • Towns near John Martin Reservoir include Hasty, Fort Lyon, La Junta, Lamar, Las Animas, and McClave. These towns are all located in Bent County, Colorado. John Martin Reservoir is a key recreational spot in this area, managed by the U.S. Army Corps of Engineers.