National Geologic Trail

Ice Age Floods National Geologic Trail

Ice Age Floods National Geologic Trail is a National Geologic Trail in Washington, Oregon, Idaho, Montana. The NPS currently lists 0 active alerts, 0 campgrounds and 0 visitor centers, and no entrance fee.

WashingtonOregonIdahoMontana National Geologic Trail No entrance fee

Updated · NPS Data API

Green Monarch Ridge by Lake Pend Oreille ID
Green Monarch Ridge · Photo: NPS Photo (via nps.gov)

About the park

“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.”

Active alerts

0

Closures

0

Campgrounds

0

Visitor centers

0

Current alerts and closures

The NPS listed no active alerts for this park in the Oct 28, 2026 snapshot. Conditions can change; check current conditions on nps.gov before you go.

Entrance fees and passes

This site has no entrance fee, according to NPS fee data.

Things to do

Activities the NPS lists for Ice Age Floods.

Guided ToursSelf-Guided Tours - WalkingSelf-Guided Tours - AutoJunior Ranger Program

Operating hours

The Ice Age Floods National Geologic Trail is a collection of sites operated and owned by a variety of partners. , Hours of operation and season will vary from site to site.

Ice Age Floods National Geologic Trail
DayHours
MondayAll Day
TuesdayAll Day
WednesdayAll Day
ThursdayAll Day
FridayAll Day
SaturdayAll Day
SundayAll Day

Weather: The National Geologic Trail is a collection of sites stretched across a four state area, the weather will vary from site to site.

Contact and directions

Phone
(509) 237-9722
Email
[email protected]
Address
Program Manager, Coulee Dam, WA 99116
Coordinates
46.5669, -118.9926· View on OpenStreetMap

Official park page on nps.gov Directions

Visitor centers

No visitor centers are listed for this site in the NPS data.

Campgrounds

No NPS campgrounds are listed for this site. Nearby national forests or state parks may offer camping.

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More parks in Washington

Ebey's Landing National Historical ReserveFort Vancouver National Historic SiteKlondike Gold Rush - Seattle Unit National Historical ParkLake Roosevelt National Recreation AreaLewis & Clark National Historic TrailLewis and Clark National Historical ParkManhattan Project National Historical ParkMinidoka National Historic SiteMount Rainier National ParkNez Perce National Historical ParkNorth Cascades National ParkOlympic National ParkAll in Washington

Nearest other NPS sites

Sources

  • Park details, alerts, fees and passes, visitor centers and campgrounds: National Park Service Data API, snapshot of Oct 28, 2026.
  • Official park page: https://www.nps.gov/iafl/index.htm
  • Data: National Park Service (NPS) Data API, U.S. Department of the Interior (developer.nps.gov). This product uses the NPS Data API but is not endorsed or certified by the National Park Service. The National Park Service and the U.S. Department of the Interior do not endorse OpenParks. Photos are NPS images shown with their original credits; park descriptions are short excerpts credited to the NPS. Always confirm current conditions on nps.gov before you travel.