Ice Age Floods National Geologic Trail

Ice Age Floods National Geologic Trail

Ice Age Floods National Geologic Trail is one of the NPS long-distance trail units touching Washington, Oregon, Idaho, and Montana, where a single trip might cover a few miles or several hundred. 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.

At Ice Age Floods National Geologic Trail, trail status shapes the entire user experience: trailhead layouts, shelter policies, water sources, and resupply logistics all sit under the same system.

Key Highlights

• Tragic Events
• Floods
• Geology
• Guided Tours
• Self-Guided Tours - Auto
• Self-Guided Tours - Walking
• Junior Ranger Program

Getting There

Reaching Ice Age Floods National Geologic Trail is straightforward once you know the route. 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

By Car

Most visitors arrive by private vehicle or rental car. Road conditions vary with weather and construction, so check the park's alerts page the day before you travel. Pay attention to GPS directions in rural stretches—some apps route drivers onto unmaintained service roads rather than the signed park entrance.

Nearest Airports

Regional airports provide the most convenient access for long-distance travelers. For the most current airline service and driving distances, cross-reference flight options with the park's contact page. Budget extra drive time from any airport, especially if you arrive after dark or during winter weather.

Public Transit and Tours

Direct public transit is limited at most National Park Service sites, but guided day tours and shuttles sometimes operate from nearby cities during peak season. Rideshare options are often reliable in gateway towns but may drop off outside the park boundary rather than at specific trailheads or visitor centers.

For turn-by-turn directions and current road status, consult the park's official directions page: https://www.nps.gov/iafl/planyourvisit/directions.htm.

Best Time to Visit

Weather shapes every visit. 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.

Spring (March – May)

Spring opens lower elevations first, with higher segments still snowbound. Water crossings can be tricky during melt.

Summer (June – August)

Summer is the main thru-hiking season, with long days and reliable trail town services.

Fall (September – November)

Fall offers stable weather, cooler hiking, and reduced bug pressure, though services taper off in some regions.

Winter (December – February)

Winter travel on the trail requires specialized skills and gear; most visitors choose snowshoe or ski day trips on low-elevation segments.

Activities and Adventures

Activities at Ice Age Floods National Geologic Trail reflect the character of the site. The options below are drawn from the park's current published list—confirm availability and any required reservations before planning around a specific activity.

• Guided Tours — schedules rotate seasonally; check the visitor center board on arrival for the current lineup.
• Self-Guided Tours - Walking — schedules rotate seasonally; check the visitor center board on arrival for the current lineup.
• Self-Guided Tours - Auto — schedules rotate seasonally; check the visitor center board on arrival for the current lineup.
• Junior Ranger Program — schedules rotate seasonally; check the visitor center board on arrival for the current lineup.

Ranger-led programs are often the highest-value activity for first-time visitors, combining interpretation with access you might miss on your own. Check program schedules at the visitor center on arrival.

Wildlife and Natural Features

Although Ice Age Floods National Geologic Trail is best known to many visitors for its recreation and scenery, it also protects the ecosystems that make those experiences possible.

Featured interpretive themes include Tragic Events, Floods, Geology.

Habitats and Ecosystems

The park's habitats support a cross-section of regional wildlife. Observing species in their native context is one of the most rewarding—and most overlooked—reasons to slow down during a visit.

Viewing Wildlife Responsibly

Give animals room, never feed them, and store food properly where bears or other scavengers are present. Use binoculars or a telephoto lens for close-up views rather than approaching.

Night Skies and Quiet

Many NPS units are increasingly valued as dark-sky and natural-quiet refuges. If your visit overlaps with a clear, moonless night, step away from artificial lighting and let your eyes adjust.

Lodging and Camping

Lodging strategy depends on how long you plan to stay at Ice Age Floods National Geologic Trail and what you want to do when you are not at the park.

On-Site Stays

Overnight accommodations inside the park's boundary are limited or not offered here. Most visitors stay in nearby towns and commute in each day.

Gateway Towns and Nearby Lodging

Communities close to the park offer a mix of chain hotels, independent inns, vacation rentals, and—depending on location—bed-and-breakfasts. Several Washington, Oregon, Idaho, and Montana towns serve as convenient bases, with restaurants, fuel, and grocery resupply. Book well ahead for summer weekends and major holidays.

Operating Hours and Seasons

Ice Age Floods National Geologic Trail: 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. Please check each respective site for more details and information.

Essential Information

Fees and Passes

No standard entrance fee is charged. Some special programs or partner-run facilities within the park may carry their own fees, so confirm before booking anything ticketed.

Contact

• Phone: (509) 237-9722
• Email: iafl_program_manager@nps.gov
• Official site: https://www.nps.gov/iafl/index.htm

Safety

Carry water, sun protection, and layered clothing appropriate for the season. Cell coverage can be spotty in parts of the park—download offline maps before you leave your lodging. In an emergency, dial 911 or contact the nearest ranger station.

Services and Accessibility

Main visitor centers typically offer accessible restrooms, interpretive exhibits, bookstore sales, and ranger assistance. Accessibility varies by building and trail; contact the park ahead of time to discuss specific needs. Pets are often allowed on leash in designated areas only—check current rules before bringing animals.

Regulations to Know

Drones are prohibited in nearly all National Park Service units without a special permit. Metal detecting, collection of natural or cultural objects, and off-trail travel in sensitive areas are also commonly restricted. Read the signs at each trailhead and ask a ranger if you are unsure.

At Ice Age Floods National Geologic Trail, even short sections can feel substantial. The route is long enough that every mile carries weight.