Great Falls

State: Montana. Type: series of five natural waterfalls on the upper Missouri River in Cascade County, near the city of Great Falls, which takes its name from the falls. The falls (from upstream to downstream: Black Eagle Falls, Colter Falls, Rainbow Falls, Crooked/Horseshoe Falls, and Big Falls/Great Falls) drop a combined 187 feet of vertical plunges over a 10-mile stretch where the river falls 612 feet total. First described by Meriwether Lewis on June 13, 1805. Three hydroelectric dams (Black Eagle 1890, Rainbow 1910, Ryan 1915) now affect portions of the falls.

The Great Falls of the Missouri River are a series of five waterfalls that gave the city of Great Falls, Montana its name, located along a roughly 10-mile stretch of the upper Missouri in Cascade County. The tallest, Big Falls (also called the Great Falls proper), drops 87 feet, and the group also includes Black Eagle Falls, Colter Falls, Rainbow Falls and Crooked Falls. Meriwether Lewis first laid eyes on the falls on June 13, 1805, during the Lewis and Clark Expedition, calling the sight "the grandest I ever beheld," though the discovery also forced the expedition into a grueling month-long portage around the cascades. Decades later, businessman Paris Gibson recognized the falls' hydroelectric potential and platted the city of Great Falls in 1883; three dams built between 1890 and 1915 (Black Eagle, Rainbow and Ryan) now submerge or alter portions of the falls, though sections remain visible, particularly when water flows are high. Today the area combines this expedition-era history with modern city infrastructure, and visitors can explore the falls, nearby Giant Springs State Park, and the Lewis and Clark National Historic Trail Interpretive Center together.

The falls stretch along the Missouri River in Cascade County, north-central Montana, running through and just outside the city of Great Falls. Giant Springs State Park, a common access point for viewing part of the river and its waterfalls, sits at 4803 Giant Springs Rd, Great Falls, MT 59405. The Lewis and Clark National Historic Trail Interpretive Center, built in 1998, sits nearby and interprets the expedition's portage of the falls.

Great Falls has a semi-arid continental climate with cold, windy winters and warm summers, typical of north-central Montana's high plains. The area is known for strong, sometimes sudden winds, including chinook winds that can bring rapid winter warm-ups. Visitors should be prepared for a wide seasonal temperature range and pack accordingly.

Late spring through early fall is the most comfortable period for exploring the falls and the River's Edge Trail, with warmer weather and longer daylight hours. Spring runoff can increase water flow over the falls, making for a more dramatic sight than during drier summer months, though exact flow-dependent visuals vary year to year.

The Great Falls were first documented by Europeans when Meriwether Lewis encountered them on June 13, 1805, during the Lewis and Clark Expedition, describing the sight as the grandest he had ever seen; the discovery meant the expedition had to portage its boats and gear nearly a month around the series of falls. William Clark discovered nearby Giant Springs during the same period of exploration. Decades later, businessman Paris Gibson saw the falls' potential to power an industrial city, platting Great Falls in 1883; the city was incorporated in 1888. Hydroelectric development followed, with Black Eagle Dam completed in 1890, Rainbow Dam in 1910, and Ryan Dam in 1915, each altering the natural appearance of the falls to varying degrees while providing power to the growing city.

Visitors can walk or bike sections of the 30-mile River's Edge Trail, which follows the falls and the historic portage route used by Lewis and Clark. The Lewis and Clark National Historic Trail Interpretive Center offers exhibits on the expedition and on Native peoples of the region. Giant Springs State Park, adjacent to the river, offers hiking, biking, fishing, bird watching, picnicking and river overlooks, plus a fish hatchery and access to the Roe River. Sightseeing at the individual named falls, particularly where dams have not fully submerged them, is a popular self-guided activity.

Giant Springs State Park is a key stop, home to one of the largest freshwater springs in the country (producing over 156 million gallons of water daily) and the short Roe River. The Lewis and Clark National Historic Trail Interpretive Center provides expedition-focused exhibits near the falls. Individual named falls, including Black Eagle Falls, Rainbow Falls, Crooked Falls and Big Falls, can be viewed from various points along the river, with dam infrastructure visible at several.

Great Falls International Airport serves the city with commercial flights; the falls and Giant Springs State Park are a short drive from the airport and downtown Great Falls. The city sits along US Highway 87 and US Highway 89, making it accessible by car from Billings, Helena and other Montana cities.

Giant Springs State Park is open year-round for day use only, sunrise to sunset, per Montana Fish, Wildlife & Parks. The Lewis and Clark National Historic Trail Interpretive Center and individual falls viewpoints may have separate hours; confirm current schedules with Great Falls Montana Tourism or the relevant site operator before visiting.

Giant Springs State Park charges a day-use fee of $8 per vehicle and $4 per walk-in or bicycle visitor for non-residents, per Montana FWP; Montana residents with a state parks registration pay no entrance fee. Fees for the Interpretive Center or other falls viewpoints were not confirmed in research and should be checked directly with the operator.

A half day is generally enough to see Giant Springs State Park and one or two of the falls viewpoints; a full day allows time to also visit the Interpretive Center and walk a longer stretch of the River's Edge Trail.

The city of Great Falls itself, a short drive from the falls and Giant Springs State Park, offers a range of hotel chains and other lodging typical of a mid-sized Montana city. Specific properties were not confirmed in research; check current listings via Great Falls Montana Tourism.

Great Falls, being a full-size city, has a broad range of restaurants downtown and along its main commercial corridors, though specific establishments near the falls themselves were not detailed in the sources reviewed. Visitors typically dine in the city center, a short drive from Giant Springs State Park and the falls.

Giant Springs State Park and the Lewis and Clark National Historic Trail Interpretive Center sit adjacent to the falls. The River's Edge Trail links many of the sites along a 30-mile route through the city. Downtown Great Falls offers additional shopping and dining a short drive from the river.

Great Falls International Airport is the primary gateway with commercial air service; a rental car is the most practical way to reach Giant Springs State Park and the individual falls viewpoints, which are spread along the river outside the immediate downtown core.

Stay on marked trails and overlooks near the falls and dam infrastructure, since river currents and drop-offs near the falls can be hazardous. Strong winds are common in the area, so secure loose items and dress in layers. For any emergency, dial 911.

A wind-resistant jacket is worth packing given the area's strong, sometimes sudden winds, along with sturdy footwear for trail walking. Sunscreen and water are useful for time spent outdoors at Giant Springs State Park and along the River's Edge Trail.

Pairing a visit to Giant Springs State Park with the nearby Lewis and Clark National Historic Trail Interpretive Center gives good context on both the natural feature and its expedition history. Water flow over the falls varies seasonally, so spring visits may offer a more dramatic view than late summer. Renting a car is the most practical way to see the falls, which are spread along a 10-mile stretch of river outside the compact downtown core.

Dial 911 for any emergency. For general visitor information, Great Falls Montana Tourism can be reached at 406-761-4436.

Great Falls Montana Tourism - https://www.visitgreatfallsmontana.org ; Giant Springs State Park (Montana FWP) - https://fwp.mt.gov/stateparks/giant-springs

This section is being updated and will be available shortly.

This section is being updated and will be available shortly.

This section is being updated and will be available shortly.