National Park Service · Washington campground guide
The numbers
Fee range
$24/night
Season open
May through October
RV size limit
Up to 40 ft
Reservation window
6 months ahead via Recreation.gov
The insider read
North Cascades 'American Alps' — least-visited Pacific NW NP. Boat-shuttle from Diablo Lake to Stehekin (most isolated US town) requires advance booking.
Original analysis from PickRV — synthesised from public sources you can verify, pulling the operational details competitor guides typically skip.
Verify at nps.govOn site
Book it right
PickRV doesn't handle campground bookings — reserve direct through the official channel so policies and cancellations flow through one record.
Opens recreation.gov
Every fact above is sourced from the managing agency's canonical page. Cross-check fee, season, and size limit before you depend on them.
Match the campground's size limit and hookup level to a vehicle category, then plan the rest of the trip.
Keep exploring
Near Oak Harbor
StateInsider tip · Most-visited WA state park. Deception Pass bridge view + saltwater channels with whirlpools. North Beach loops face west for sunset.
Near Ilwaco
StateInsider tip · Mouth of the Columbia River. Two historic lighthouses on the headlands. Lewis & Clark NHP visitor center.
Near Coulee City
StateInsider tip · Dry Falls — once 3.5 miles wide + 400 ft tall, larger than Niagara in the Ice Age. Sun Lakes for swim. Geology trail.
Near Amanda Park
USFSInsider tip · Lake Quinault rainforest. World's largest Sitka Spruce (191 ft) 5 min. Historic Lake Quinault Lodge restaurant.
Your next step
Newhalem Creek Campground (North Cascades NP/NRA) takes rigs up to 40 ft, so what you arrive in decides whether the loop works at all. If you don't own one, the same trip runs on a motorhome rented in Washington.
Nothing in Washington is bookable today — PickRV opens for bookings on October 25. Dated requests are what we take to owners, so give us the window you actually want — you get one email the day a rig covers it, and nothing else.
Nearby & related
Sourced costs, campground directories, and the places worth a detour — the next layer of Washington trip planning.
Before you go
Washington rules
Verified 2026-05-10
