Dry Falls Overlook

Around fifteen thousand years ago, an ice dam in what is now Montana held back an enormous glacial lake, Lake Missoula. Again and again the dam failed, releasing walls of water that raced across eastern Washington at highway speed toward the sea.

When those floods poured over this basalt cliff, they formed a waterfall on a scale almost beyond imagining, estimated at several miles wide with flows dwarfing anything alive today. As the falls pounded the rock, they slowly ate their way upstream, retreating to where the cliff now stands. When the floods ended, the water simply stopped, leaving the dry cliff behind.

For a long time nobody could explain the strange, scoured landscape of eastern Washington, its dry channels, giant potholes, and stranded boulders. A geologist named J Harlen Bretz argued in the 1920s that only immense floods could have done it, an idea that was fiercely rejected for decades before the evidence finally proved him right.

Today the channeled scablands are recognized worldwide as one of the best places on the planet to read the marks of catastrophic flooding, and Dry Falls has been honored as a scientifically significant geologic site. Standing at the overlook, you are looking at the front line of that ancient deluge.

The little lakes strung out beneath the cliff are the falls' own plunge pools, the deep basins the falling water dug out, now fed by groundwater and rimmed with reeds. In a desert setting they are green oases, drawing wildlife and, in the state park below, anglers and campers.

The contrast is the whole story of the place: a bone-dry monument to a flood, with quiet blue water pooled at its foot.

The surrounding shrub-steppe is home to marmots, coyotes, mule deer, rattlesnakes, and a lot of birds, from cliff-nesting swallows and swifts to raptors riding the desert thermals. The lakes below attract waterfowl and migrants.

Spring is the sweet spot, when the desert briefly greens and wildflowers appear and the heat has not yet arrived. Summer is hot and bright, fall is mild and golden, and winter is cold and often windy, when the empty cliff looks starkest of all.

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.

The Dry Falls Overlook, near Coulee City in eastern Washington, offers a stunning view of one of the most remarkable geologic wonders in the state: a massive, now-dry waterfall cliff that was once, during the Ice Age, the largest waterfall known to have existed on Earth. During cataclysmic Ice Age floods thousands of years ago, enormous volumes of water poured over this three-and-a-half-mile-wide, four-hundred-foot-high rock precipice, dwarfing Niagara Falls. Today the falls are dry, leaving a dramatic, sculpted cliff and plunge basins with small lakes below. From the overlook and its interpretive center, visitors can gaze at this awe-inspiring monument to the power of the ancient floods.

From the Dry Falls Overlook, you can gaze out at the enormous, dramatic cliff of the now-dry ancient waterfall, taking in its vast scale, the sculpted rock, and the lakes in the plunge basins below, while an interpretive center explains the astonishing story of the Ice Age Missoula floods that created it. The sheer size and the tale of the once-mightiest waterfall on Earth are awe-inspiring. Interpretive signs and exhibits provide fascinating context. With its jaw-dropping view of the ancient dry falls and the story of the cataclysmic floods, the Dry Falls Overlook offers a memorable and educational stop in eastern Washington.

The Ice Age floods, also called the Missoula floods, were a series of cataclysmic events thousands of years ago when a massive ice dam holding back an enormous glacial lake in what is now Montana repeatedly broke, unleashing walls of water that raced across eastern Washington with unimaginable force. These floods carved the region's dramatic landscape, known as the Channeled Scablands, and created Dry Falls as water poured over the cliff in volumes far greater than any waterfall today. When the floods ended, the falls dried up, leaving the stark, sculpted precipice. This astonishing geologic story is what makes Dry Falls and the surrounding landscape so remarkable.

Spring through fall offers the most pleasant weather for enjoying the overlook, with spring bringing wildflowers and green to the scablands and fall offering comfortable temperatures, while summer can be hot in the exposed eastern Washington landscape, so morning or evening visits are more comfortable then, and winter is cold. The interpretive center has seasonal hours, so checking before you go is wise. Morning and evening light dramatizes the cliff. For the best combination of comfortable weather and good light, aim for spring, fall, or the cooler hours of a summer day at the Dry Falls Overlook.

The Dry Falls Overlook is near Coulee City in eastern Washington, within Sun Lakes-Dry Falls State Park, near the lakes of the park, the Grand Coulee Dam to the north, the Lake Lenore Caves, and the dramatic Channeled Scablands and Grand Coulee. That makes the Dry Falls Overlook a fascinating stop to combine with Sun Lakes-Dry Falls State Park, the Grand Coulee Dam, the Lake Lenore Caves, and the other Ice Age floods attractions of eastern Washington on a visit to the state.