Campground · WA
Colonial Creek South Campground
WA · North Cascades National Park
Colonial Creek South Campground is generally hard to book. Across the 5 months we have reservation data for, difficulty peaks in August (8/10) and eases to its lowest in May (5/10). The heat strip below breaks down every month — pick one for its full odds, lead-time chart, and easier nearby alternatives.
Booking difficulty by month
Midweek tip: in the busiest month (August), arrivals are lightest on Monday — shift your dates to improve your odds.
When reservations open
Booking window
Reservations open on a rolling 6-month window at 7:00 AM America/New York.
For example, sites for April 15, 2027 become bookable on October 15, 2026. Set a reminder a few minutes before release for the best shot.
Standard Recreation.gov 6-month rolling window: sites become bookable 6 months before arrival at 7:00 AM ET.
Sites & amenities
- 72 RV sites
- 3 accessible sites
- Max RV length 43 ft
Activities: BIRDING, KAYAKING, PHOTOGRAPHY, WATER ACCESS, HIKING, FISHING, INTERPRETIVE PROGRAMS, CAMPING, BOATING