Seasonal old-growth forest campground near Winlock with 24 standard and eight full-hookup vehicle sites, showers, and trails; main campground closed in winter.
Lewis and Clark State Park protects lowland forest along the I-5 corridor near Winlock. The current official brochure identifies 24 standard campsites and eight full-hookup back-in sites, for 32 vehicle campsites, plus separate hiker/biker and equestrian sites. Showers and drinking water are available. The official material does not publish a dependable park-wide RV length or list an RV trailer dump, so those details are omitted. The main campground closes for winter; the posted 2026–27 closure runs October 1 through May 1.
Lewis and Clark State Park protects a mature lowland forest with trails through Douglas fir, western red cedar, and wetland areas. The campground is seasonal, so consult the current winter schedule before traveling.
Practical guidance assembled from current operator maps, park pages, and clearly identified community observations.
Sites 1–12 in the old-growth loop are among the most impressive in any WA state park — massive Douglas firs 200+ years old provide full canopy cover. Book these first. Sites 13–25 in the secondary loop are in younger forest and more open. No hookups are available. This small, beautiful park fills on summer weekends — arrive by Thursday. The old-growth trail loop is a must-do even if you're not camping.
| 📍 Nearest Town | Chehalis, WA |
| ⛽ Gas Station | 10 mi |
| 🛒 Grocery Store | 10 mi |
| 🏪 Costco | 50 mi |
| ☕ Starbucks | 12 mi |
| 🏕️ Nearest State Park | 20 mi |
Stock up in Chehalis, WA before heading out — services get limited near the campground.
Ready to book?
Main campground closed October 1, 2026–May 1, 2027; reserve during the operating season and verify current dates. Confirm current rules, site dimensions, and conditions with the operator. Booking and availability are handled externally.