Colter Falls (historical)
Difficulty
Moderate
Trail Length
2.4 miles
Trail Type
Out And Back
Elevation Gain
350 ft
About Colter Falls (historical)
Colter Falls is a historical cascade on the upper Missouri River in north-central Montana and was the second of the Great Falls of the Missouri River series along a roughly 10-mile (16 km) stretch. Before the early 20th-century construction of Rainbow Dam the drop at Colter Falls measured about 6 feet 7 inches (2.01 m). Today the falls themselves sit submerged beneath the reservoir created by Rainbow Dam, so the site is valued more for its place in the river’s dramatic waterfall corridor and regional history than as an active, visible waterfall. While you won’t find a free-flowing drop to admire, the Colter Falls locale is inviting for hikers and riverfront visitors who want to experience the Great Falls corridor. Trails and viewpoints near Rainbow Dam and along the Missouri River let you trace the same riverine landscape that once featured Colter’s brief cascade, offering a quiet, interpretive outing for those interested in geology and the river’s changing uses over time.
Trail Description
There is no dedicated trail that leads directly to Colter Falls because the falls are submerged. The nearest maintained route is an out-and-back trail approximately 2.4 miles long with about 350 feet of elevation gain, typically rated moderate in difficulty. No specific USFS trail name or number, and no detailed USFS surface/grade/class information, are provided for a trail to the submerged falls; instead hikers use nearby riverfront trails and viewpoints around Rainbow Dam to view and learn about the historic waterfall site.
What to Expect
Visitors should not expect to see Colter Falls, as it is no longer visible. Instead, the area offers views of the Missouri River, the Rainbow Dam, and surrounding landscapes.
Accessibility
Accessibility may vary depending on the specific location around Rainbow Dam. Some viewpoints and trails may be accessible to individuals with mobility challenges.
Seasonal Closures
There are no known seasonal closures for the area around Rainbow Dam, but access may be affected by weather conditions or maintenance.
Safety Information
Visitors should exercise caution near the dam and reservoir due to strong currents and restricted areas. Follow all posted signs and guidelines.
Location & Access
Getting There
Colter Falls was located near Great Falls, Montana, on the Missouri River. The site is now submerged under the reservoir created by Rainbow Dam.
Get Directions on Google MapsParking
Parking is available near the Rainbow Dam area, which provides access to views of the Missouri River and the surrounding landscape.
Elevation
3251 feet above sea level
Coordinates
47.537460° N, -111.214695° W
Visitor Tips & Gear
Bring a camera to capture the scenic views of the Missouri River and Rainbow Dam. Check local regulations for access and safety guidelines.
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With 2.4 miles and 350 ft of elevation gain, sturdy boots and trekking poles will help on this moderate trail. Sun exposure on the trail makes good sun protection a must in summer.
Polarized Sunglasses (Knockaround)
Cuts glare off the water so you actually see the falls — and your photos turn out better too.
Columbia Watertight II Rain Jacket
Packs into its own pocket, seam-sealed, and keeps you dry from spray and surprise rain.
Earth Pak Waterproof Dry Bag
Keeps your phone and gear dry when waterfall mist soaks everything else.
Waterproof Phone Pouch (AiRunTech)
Cheap insurance — take photos right next to the falls without killing your phone.
Timberland Euro Sprint Mid Waterproof
Trusted waterproof boot with premium leather and grippy rubber sole — reliable on rocky, wet trails.
TrailBuddy Trekking Poles
Lightweight aluminum, cork grips, and flip-locks that actually hold — a best-seller for good reason.
Where to Stay
Find hotels, lodges, and B&Bs near the trailhead
Browse vacation cabins and private rentals nearby
Unique outdoor stays — tents, yurts, and treehouses
Rent a campervan or RV for your waterfall road trip
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Frequently Asked Questions
🐶 Are Dogs Allowed at Colter Falls (historical)?
❌ Dogs are not allowed
Are There Any Fees or Permits Required?
🆖 No fees required
🏊 Is There Swimming at Colter Falls (historical)?
❌ Swimming is not allowed
Best Seasons to Visit
Spring and summer are ideal for visiting the area around Rainbow Dam, as the weather is typically mild and the surrounding landscapes are lush.
Additional Information
Nearby Attractions
Nearby attractions include Giant Springs State Park, the Lewis and Clark Interpretive Center, and other waterfalls along the Missouri River such as Rainbow Falls and Black Eagle Falls.
Wildlife
The area around the Missouri River is home to various bird species, deer, and other wildlife. Visitors may spot animals while exploring the region.
