Entrance station for Colonial Creek Campground on Diablo Lake.
Photo: NPS Photo
About
Colonial Creek South Campground is a remote, yet busy campground nestled in old growth forest on the south side of State Route 20 near mile marker 130.Ten walk-in, tent-only sites are available first-come, first-served in the winter (sites 64-73). Sites may be difficult to access in winter. Reservations required late May to September. Recreational opportunities include a fully accessible fishing pier and boat launch on Diablo Lake, as well as hiking opportunities on Thunder Creek and Thunder Knob trails.
Campsites
Location
Colonial Creek Campground
c/o North Cascades National Park Service Complex
Sedro-Woolley, WA 98284
Fees
Hours
Most of the campground is open seasonally with reservations, usually late May to mid-September. Colonial Campground South campsites 64-73 are open during winter months with no water, services, or fees. Vault toilets available. Snow may be on the ground during winter months and sites may be difficult to access.
Reservations
Reservations are required during the peak season for all campgrounds from late May through early September of each year. Campsite reservations are released in two different booking windows of 6 months in advance or 7 days in advance. Campsites can be reserved online or over the phone. To reserve campsites over the phone, call recreation.gov at (877) 444-6777.
Make a Reservation →Directions
Located off of SR 20 at mile post 130. Twenty miles (40 km) east of Marblemount, 63 miles (101 km) west of Winthrop.
Weather
The best weather for visiting the North Cascades generally occurs between mid-June and late September. Summer daytime temperatures average in the 70s F. Snow is off most trails by mid-July. Autumn and Spring are popular for color and wildlife. Storms are common: always be prepared for a few days of rain and wind. The east side of the Cascade Mountains (Lake Chelan National Recreation Area) is drier and warmer in the summer than the west side. Summer temperatures at Stehekin reach the 90s F.
Accessibility
There are three wheelchair accessible sites available in Colonial Creek North and South Campgrounds.
Gathering firewood is prohibited. Firewood is available outside the park.
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This campground is not large RV friendly. Large RVs can better be accommodated in Newhalem Creek Campground sites.
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There are three ADA accessible sites available in Colonial Creek North and South Campgrounds.
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Paved Roads - All vehicles OK
Developed Campground