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.
- Surface area (mi)
- 29.32
- Max depth (ft)
- 59.06
- Elevation (ft)
- 4642.39
- Shoreline length (mi)
- 21.75
Ideal for
- Family friendly:
- Pet friendly:
- Romantic getaways:
Popular activities
- Boating
- Swimming
- Fishing
- Hiking
Islands
Emerging from the shimmering waters, the islands of John Martin Reservoir are captivating gems, offering enrichment to both the natural landscape and the visitor experience. Located in southeastern Colorado, this expansive reservoir has a rich history tied to irrigation and recreation, transforming the area into a vibrant hub for outdoor enthusiasts. The islands serve as vital recreational spaces, perfect for picnicking, birdwatching, and fishing, while understated hiking trails weave through the flora, leading to exhilarating lookouts that showcase panoramic views of the surrounding plains.
Among the islands, the captivating sights of ancient historical landmarks can be found, remnants of early settler life that whisper tales of the past. Photographers flock to these serene spots, capturing the play of light on the water as well as the striking contrasts of rustic structures against vast skies. The allure of the islands lies not only in their beauty but also in their promise of adventure and a tranquil escape from the ordinary.
Nearby amenities
At this recreational area, you can enjoy various amenities designed to enhance your visit. Boating is a prime activity, with the John Martin Reservoir State Park Marina offering boat rentals, a public dock, and a fuel dock for convenience. A designated canoe and kayak launch area makes it easy to explore the waters. For fishing enthusiasts, there’s a fishing pier and a bait and tackle shop nearby for all necessary supplies.
Dining options include the lakefront restaurant, which provides scenic views with delicious meals, while picnic areas equipped with BBQ grills allow for a more relaxed dining experience. RV and tent campsites are available for overnight stays, along with cabins and vacation rentals. The area also ensures easy access with a day-use parking lot and ADA compliant paths.
For outdoor recreation, hiking trails and designated swimming areas offer plenty of activities. Essential facilities like restrooms, showers, and a visitor information center ensure a comfortable stay, making this a well-rounded destination for all types of travelers.
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!
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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.
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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.
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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.
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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.
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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.