Ice Age Floods National Geologic Trail

At the end of the last Ice Age, 18,000 to 15,000 years ago, an ice dam in northern Idaho created Glacial Lake Missoula stretching 3,000 square miles around Missoula, Montana. The dam burst and released flood waters across Washington, down the Columbia River into Oregon before reaching the Pacific Ocean. The Ice Age Floods forever changed the lives and landscape of the Pacific Northwest.

What you’ll hear

78 places to explore in this park.

• Back to Trailhead Park
• Badger Mountain Trail Head
• Beacon Rock
• Bowl and Pitcher (Riverside State Park)
• Bull Lake
• Cabinet Gorge Dam
• Candy Mountain
• Candy Mountain Trailhead
• Cape Disappointment State Park
• Cape Disappointment State Park-Lewis and Clark Interpretive Center
• Clark Fork Ice Dam
• Coffeepot Lake Recreation Area
• Columbia Gorge Discovery Center & Museum
• Columbia Hills Historical State Park
• Crab Creek - Rocky Ford Area
• Crown Point National Natural Landmark
• Drumheller Channels National Natural Landmark
• Eddy Narrows
• Ephrata Erratic Fan
• Erratic Rock State Natural Site (Bellevue Erratic)
• Farragut State Park
• Fishtrap Recreation Area
• Fort Owen State Park
• Fort Spokane Visitor Center and Museum
• Frenchman Coulee Recreation Area
• Ginkgo Petrified Forest National Natural Landmark
• Glacial Dam at Green Monarch Ridge View Point
• Glacial Lake Missoula National Natural Landmark (Camas Prairie Ripples)
• Glacial Lake Missoula Strandlines
• Gold Creek
• Govan Recreation Site
• Grand Coulee Dam Visitor Center
• Grand Coulee National Natural Landmark
• Green Monarch Ridge
• Hanford Reach National Monument
• Hat Rock State Park
• Ice Rafted Erratics
• Lake Como
• Lake Lewis High Water Marker
• Lake Pend Oreille
• Lyons Ferry State Park
• Montana Natural History Center
• Multnomah Falls and Lodge
• Museum of Natural History, University of Oregon
• National Bison Range
• Pacific Lake Recreation Site
• Palouse Falls State Park
• Panoramic Views to the north
• Pipistrelle Cliffs Trail at Drumheller Channels
• Potholes Coulee
• Purcell Trench
• Ravalli County Historical Museum
• Rimrock Trail at Drumheller Channels
• Rock Creek Recreation Site
• Saddle Mountain
• Saddle Mountains
• Scooteney Reservoir
• Skyline Trail Ice Age Floods
• Spokane's Riverfront Park - Ice Age Floods Playground
• Steamboat Rock State Park
• Stout's bar at Little Money Creek
• Sun Lakes-Dry Falls State Park
• Tammany Bar Flood Deposits
• Telford Recreation Area
• The Great Gravel Bar of Moses Coulee National Natural Landmark
• The Paradise Center
• The REACH Museum
• Trailhead Park Badger Mountain
• Travelers' Rest State Park
• Tualatin Heritage Center
• Tualatin Ice Age Walking Trail
• Tualatin Public Library
• Twin Lakes Recreation Area
• View Point of Mount Adams & Mount Rainer
• Wallula Gap National Natural Landmark
• Willamette Falls
• Willamette Floodplain National Natural Landmark
• Yakima Sportsman State Park