Washington
Millersylvania State Park
Verified by America’s State Parks Editorial Team – Updated February 2026
Millersylvania State Park features 138 campsites on beautiful Deep Lake, old-growth forests, and 16 miles of trails through towering cedar and fir groves—a Pacific Northwest escape!
Deep Lake
| Lake Info | Details |
|---|---|
| 🌊 Name | Deep Lake |
| 🏊 Swimming | Designated beach |
| 🚣 Boating | Non-motorized |
| 🎣 Fishing | Available |
138 Campsites
| Camping Info | Details |
|---|---|
| 🏕️ Standard | 93 sites |
| ⚡ Utility | 45 sites (RV up to 60ft) |
| 🏠 Cottage | Historic Lakeside Cottage |
| 👥 Group Camp | Available |
16 Miles of Trails
| Trail Info | Details |
|---|---|
| 🥾 Total | 16 miles |
| 🌲 Scenery | Old-growth cedar & fir |
| 🚴 Biking | Trails available |
| 🌸 Spring | Wildflower blooms! |
FAQ
Are there old-growth trees?
Yes! The park protects stands of old-growth cedar and fir forests—a rare Pacific Northwest treasure.
What are the park hours?
Summer: 6:30am–dusk. Winter: 8am–dusk. Make reservations for peak season (Memorial Day–Labor Day).
How big can my RV be?
Up to 60 feet! There are 45 utility sites that accommodate large RVs on Deep Lake’s eastern shore.
🌲 Washington’s Forest Lake Retreat
Visit WA State Parks website.
Last updated: February 20, 2026
