Park Lookout is an independent site, not the National Park Service. We are not affiliated with NPS. Confirm conditions on nps.gov before you go: official Ice Age Floods National Geologic Trail page.
Current NPS alerts (0)
NPS lists no current alerts for this site as of Oct 24, 2026, 9:57 PM ET.
Weather alerts (National Weather Service)
No active NWS watches, warnings or advisories for the forecast zone and county at the park's central point.
About this site
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.
- Type
- National Geologic Trail
- States
- Washington, Oregon, Idaho, Montana
- Address
- Program Manager, Ice Age Floods National Geologic Trail, 1008 Crest Drive, Coulee Dam, WA 99116