Avalanche Creek

Q: Will my kids be able to complete the hike to Avalanche Lake?

Most can. It's moderate (2 miles round trip, 500 ft elevation gain). There's also a short accessible boardwalk for shorter walks.

Q: Can I drink the water from the lake or creek?

No. Glacial meltwater carries Giardia regardless of its clear appearance. Use potable water stations at the picnic area.

Q: Do I need a shuttle reservation or can I just drive?

You can drive anytime. Summer (July-Sept) has a 3-hour parking limit. Shuttle is optional but competitive—reservations via Recreation.gov open 60 days in advance.

Q: What makes the forest here different from other parts of Glacier?

These old-growth hemlock and western cedar form a temperate rainforest—a microclimate unique to Avalanche. The cool, wet conditions allow species found nowhere else in Glacier.

Q: Is the water really milky or is that a photo effect?

It's genuinely milky. Glacial flour (rock silt) suspended in meltwater refracts light, creating that opaque blue. The flour comes from glaciers grinding bedrock upstream.

Type

Glacial Cirque with Old-Growth Forest

Accessibility

Drive-up viewing (picnic area, boardwalk) or Moderate hike (Avalanche Lake Trail: 2 miles round trip, 500 ft elevation gain, rocky sections)

Best Season

July through September (shuttle access, full road opening, snow-free trail)

Busiest Season

Mid-July through Labor Day (peak summer visitation)

Features

U-shaped glacial valley, old-growth temperate rainforest (hemlock and western cedar), Avalanche Lake fed by glacial meltwater, Avalanche Creek with visible glacial flour

Overview

About This Attraction

A glacial cirque where old-growth hemlock and western cedar thrive in Glacier's rarest microclimate—a temperate rainforest found nowhere else in the park. Avalanche Lake below holds milky-blue water, each glacial-flour grain a testament to ongoing erosion upstream. Two iconic trails begin here: the short Cedar Grove boardwalk and the moderate path to the lake's rocky shore, where you see the valley's U-shape and feel the cold meltwater's insistence. This is Glacier's most crowded place outside Going-to-the-Sun Road itself, yet the geology and ecosystem justify every visitor.

Quick Facts

Type

Glacial Cirque with Old-Growth Forest

Access

Drive-up viewing (picnic area, boardwalk) or Moderate hike (Avalanche Lake Trail: 2 miles round trip, 500 ft elevation gain, rocky sections)

Main Features

U-shaped glacial valley, old-growth temperate rainforest (hemlock and western cedar), Avalanche Lake fed by glacial meltwater, Avalanche Creek with visible glacial flour

What You'll See

Towering hemlock and cedar canopy, milky-blue glacial lake from suspended rock flour, U-shaped valley walls, exposed bedrock with glacial striations, mountains above the cirque

What Makes It Special

Oldest continuously-covered temperate rainforest in Glacier. Visible glacial flour in creek and lake (active meltwater erosion). Classic U-shaped valley from Pleistocene glaciation.

Safety Considerations

U-shaped valley with exposure; steep cirque walls above lake. Creek crossings in early season (snowmelt active April-July). Afternoon thunderstorms common in summer; plan to depart trail by 2pm. Popular area creates parking scarcity (fills by 8am July-August) and trail congestion during peak hours. Bears present—maintain 100-yard distance; store food safely.

Visitor Tips

Look for glacial striations and polish on exposed rock—direct evidence of ice flow.
The milky color reveals glacial flour still grinding from mountains above; each grain is fresh rock.
Western cedar and hemlock grow nowhere else in Glacier; this microclimate is unique.
Arrive before 7am for parking during July-August.
Watch for pikas and marmots on rocky areas above the forest; listen for their calls.
Creek crossings are safest mid-day after morning melt stabilizes (early season).

Details

Location & Features

Type: Glacial Cirque with Old-Growth Forest

Distance from Entrance: 15 miles east of West Glacier entrance; approximately 20-25 minutes by car

GPS: 48.6792077447,-113.819882361

What Makes It Unique:

Oldest continuously-covered temperate rainforest in Glacier. Visible glacial flour in creek and lake (active meltwater erosion). Classic U-shaped valley from Pleistocene glaciation.

Geology

Formation Type: Glacial Cirque

Scientific Interest:

Active glacial cirque with ongoing meltwater erosion. Striations and polish on bedrock (ice-flow direction). Temperate rainforest ecosystem at northern range limit.

Getting There

Directions:

From West Glacier entrance, drive Going-to-the-Sun Road 15 miles east to Avalanche Creek picnic area and trailhead parking. Shuttle access available July-September via Recreation.gov (competitive in peak season).

Access Type: Drive-up viewing (picnic area, boardwalk) or Moderate hike (Avalanche Lake Trail: 2 miles round trip, 500 ft elevation gain, rocky sections)

Road: Paved Going-to-the-Sun Road to picnic area; dirt/rock trail to Avalanche Lake

Seasonal Access: Year-round access to picnic area via paved road. Avalanche Lake Trail typically free of snow July through September.

Parking: Main lot fills by 8am during peak season. Limited pullout parking. 3-hour timed parking limit in effect July 1 - September 7, 2026.

Entry Fees: $35 per private vehicle (7-day pass)

Trails

Trailheads Here:

Avalanche Lake Trail, Trail of the Cedars

Connecting Trails:

Avalanche Lake Trail continues upward toward backcountry. Trail of the Cedars boardwalk connects to picnic area.

Photography & Viewing

Best Viewpoints:

Avalanche Lake shore for full cirque view and glacial morphology. Cedar grove from boardwalk or trail for ecosystem scale and forest immersion.

Photo Opportunities:

Golden hour light filtering through old-growth cedars (morning and evening). Avalanche Lake mirror reflections at sunrise. Wildflowers early season.

Best Photo Spots:

From trailhead looking into valley (morning light), lakeside for cirque reflections, among cedar grove for canopy texture and depth

Sunrise/Sunset: Excellent. East-facing cirque catches alpenglow. Morning light filtering through cedar canopy is spectacular.

Stargazing: Fair to moderate. Valley location provides some protection from direct light pollution but is not a dark-sky destination.

Facilities

Restrooms (Mix of facilities: flush restrooms (summer season), accessible restroom, seasonal vault toilet)
Potable Water
Picnic Areas
Interpretive Signs

Cell Service: Weak to no service at Avalanche Lake area. Plan accordingly.

Wildlife & Nature

Common Wildlife:

Marmots, pikas, mountain goats, black bears, elk, moose, beavers, northern river otters

Wildflower Peak: Mid-July through August (wildflowers in alpine meadows above lake)

Seasonal Information

Best Season: July through September (shuttle access, full road opening, snow-free trail)

Best Times: Early morning (before 7am) or late afternoon (after 4pm) to avoid crowds. June or September-October for fewer visitors.

Busiest: Mid-July through Labor Day (peak summer visitation)

Parking Fills: 8am-6pm July through August; 9am-5pm in June and September

Snow Until: Trail typically clear of snow by mid-July. Snowbanks along creek may persist through August.

Winter Access: Avalanche Lake Trail closed by snow typically November through June. Picnic area road remains open year-round. Winter backcountry access requires avalanche awareness.

Weather:

Afternoon thunderstorms common June-September. Morning fog in early season. Persistent snowpack until late June/early July.

Activities

Fishing (Westslope cutthroat trout in Avalanche Lake and creek (backcountry fishing permit required))

Nearby

Nearby Attractions:

Trail of the Cedars, Lake McDonald, McDonald Creek, Apgar Village, Apgar Nature Center

Nearby Services:

Potable water at picnic area, restrooms (seasonal). Nearest lodging at Lake McDonald Lodge. West Glacier services (gas, food) approximately 15 miles.

Insider Tips

The milky water reveals work happening upstream—glaciers grinding rock to flour in real time.
Cedar and hemlock thrive here in a rare temperate rainforest; nowhere else in Glacier has this forest ecology.
Arrive before 7am in peak season for parking; the lot fills reliably by 8am.
Rock flour (glacial silt) doesn't make water unsafe to touch, but giardia does—bring treated water.
Look for pikas among the rocks above the trail; they're most active in early morning.
The trail gains elevation steadily—it's doable for older kids but not easy for toddlers.

Visitor Information

Accessibility:

Boardwalk is paved and fully accessible. Avalanche Lake Trail is moderate difficulty with rocky terrain and steady elevation gain.

Family Friendly:

Boardwalk is fully accessible for strollers and wheelchairs. Avalanche Lake Trail is moderate but doable for fit children ages 6+. Creek crossings in early snowmelt season (May-June) require careful footing.

Nearby Facilities:

Avalanche Campground (tent camping), picnic area at creek with tables and fire pits

FAQs

Is it worth visiting if it's the most crowded place in the park?

Yes. The old-growth cedar-hemlock forest is Glacier's rarest ecosystem—it exists nowhere else in the park. The glacial cirque's geology and the milky lake's visible meltwater justify the visit.

Will my kids be able to complete the hike to Avalanche Lake?

Can I drink the water from the lake or creek?

Do I need a shuttle reservation or can I just drive?

What makes the forest here different from other parts of Glacier?

Is the water really milky or is that a photo effect?