Park Passport

Ice Age Floods National Geologic Trail WA,OR,ID,MT

Lat, Long: 46.5669309008, -118.992564971

Designation: 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.

Weather:

The National Geologic Trail is a collection of sites stretched across a four state area, the weather will vary from site to site. Please check the weather for your local region, or the region you'll be visiting, through their respective sites.

Directions:

To Trail Headquarters from Spokane Take I-90 West At Exit 277, merge onto US-2 toward Davenport/Fairchild AFB/Spokane Airport Just past Wilbur, turn right onto WA-21 Stay left onto Highway 174 Turn right onto WA-155 Stay on WA-155 past Grand Coulee Dam and into the town of Coulee Dam Cross the Columbia River and continue on WA-155 Turn right onto Crest Drive and follow up the hill. The HQ Office is located on the left

For more details ›

Address/Contact:

Program Manager

Coulee Dam, US, 99116

Phone: (509) 237-9722

Email: iafl_program_manager@nps.gov

Entrance Fees:

Green Monarch Ridge by Lake Pend Oreille IDLarge butte with lake in the foregroundSteamboat rock in the foreground with Banks Lake in the distanceDry Lake lake bed and falls blanked with snow.A overhead shot of the Dry Falls area