Giant Springs State Park

The water that pours out of Giant Springs has been on a long, slow journey. It falls as rain and snow on the Little Belt Mountains to the south, sinks into the Madison limestone aquifer, and travels underground for decades before surfacing here. By the time it reaches the spring it has been filtered to a remarkable clarity and cooled to a steady 54 degrees, which is why the pool never freezes and stays glass-clear through a Montana winter.

The sheer volume is the marvel. At around 150 million gallons a day, the spring is one of the largest freshwater springs in the United States, and standing at its edge you can see the sand and gravel dancing where the water boils up from below. It is a rare chance to look straight into the plumbing of a landscape.

The spring's overflow forms the Roe River, which runs only about 200 feet before it empties into the Missouri. In the late twentieth century a local effort, including schoolchildren, successfully petitioned Guinness World Records to recognize the Roe as the shortest river in the world, edging out a rival in Oregon. Guinness later retired the category, but the story stuck, and the tiny river is still a favorite oddity.

That gives the park a unique geographic distinction. Here the shortest river in the world empties into one of the longest, the Missouri, a few steps apart, a quirk of hydrology you can take in with a single glance.

The Corps of Discovery reached this stretch of the Missouri in June 1805 and camped near the great falls that gave Great Falls its name. Meriwether Lewis noted the large fountain of clear water bursting from the riverbank, one of the many discoveries he recorded during the grueling month-long portage the expedition made around the series of waterfalls here.

That history is close at hand. The Lewis and Clark Interpretive Center stands right beside the park on the bluff above the river, and the paved River's Edge Trail links the spring to the falls and overlooks, so you can walk the same river the expedition struggled to get around.

The park is the only Montana state park with a fish hatchery inside its boundaries. The Giant Springs hatchery raises trout in the cold spring water, and visitors can watch the fish in the raceways and ponds, a low-key hit with kids. The park also offers picnic grounds, a visitor center, and access to the River's Edge Trail for walking and biking along the Missouri.

Because the spring runs the same temperature year-round, the park is beautiful in every season, from summer picnics to a steaming pool on a snowy winter day. It is busiest in summer, when the trail, the picnic areas, and the interpretive center draw both locals and travelers passing through Great Falls.

The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.

Giant Springs State Park, in Great Falls, Montana, is a beautiful state park centered on Giant Springs, one of the largest freshwater springs in the country, where enormous volumes of crystal-clear water gush from the ground beside the Missouri River. The stunning spring, discovered and noted by the Lewis and Clark expedition, pours out huge quantities of clear, cold water, and the park also features the Roe River, sometimes cited as one of the shortest rivers in the world, along with trails, a fish hatchery, picnic areas, and lovely river scenery. A gorgeous and unique natural and recreational spot, it delights visitors. With its giant spring and river scenery, Giant Springs State Park offers a delightful destination in Montana.

You can admire the crystal-clear waters of Giant Springs gushing from the ground, see the very short Roe River, walk and bike the trails along the Missouri River, visit the fish hatchery, picnic, and enjoy the scenic river setting. The beautiful giant spring, the unusual short Roe River, the riverside trails, and the fish hatchery are the draws, making it a lovely and interesting park. Its connection to Lewis and Clark adds historical interest. With its spring and trails, Giant Springs State Park offers a rewarding experience in Great Falls, Montana.

Giant Springs is special as one of the largest freshwater springs in the country, pouring out enormous volumes of crystal-clear, cold water from the ground each day beside the Missouri River, a striking natural wonder. The spring was noted by the Lewis and Clark expedition during their time at Great Falls. The park is also home to the Roe River, which flows a very short distance from the spring to the Missouri and has been cited as one of the shortest rivers in the world. These unusual features make Giant Springs State Park a fascinating destination in Montana.

The mild months of spring through fall offer the most pleasant weather for enjoying the spring, the riverside trails, and picnicking, with spring and fall especially comfortable and the scenery lovely, while the clear spring is beautiful year-round. Fall brings pleasant weather and color along the river. For the most pleasant weather to enjoy the spring and trails, aim for spring through fall at Giant Springs State Park in Montana.

Giant Springs State Park is in Great Falls, Montana, along the Missouri River, within reach of the Lewis and Clark Interpretive Center, the C.M. Russell Museum, the Missouri River trails, and central Montana. That makes Giant Springs State Park a delightful stop to combine with the Lewis and Clark Interpretive Center, the C.M. Russell Museum, and the other attractions of Great Falls on a visit to Montana.