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About Washington State Park
Washington State Park encompasses 2,157.57 acres along the Big River in De Soto, Missouri. A destination for history and nature lovers alike, the park welcomed 307,643 visitors in 2021 — drawn by its ancient petroglyphs, scenic trails, and diverse wildlife.
The park is home to over 350 Native American petroglyphs, some dating back more than 1,000 years. These ancient rock carvings are among the most significant archaeological sites in the Midwest, offering a window into the lives and spiritual practices of the region's earliest inhabitants.
With 50 campsites, 11 lodging cabins, a swimming pool, camp store, 9.7 miles of trails, and 140 recorded bird species, Washington State Park is a complete outdoor destination for families, birders, anglers, and history enthusiasts.
Ancient Petroglyphs
Washington State Park protects one of the largest collections of Native American petroglyphs in the state. More than 350 rock carvings, over 1,000 years old, are found throughout the park. These sacred markings — including spirals, animal figures, and abstract designs — are a testament to the rich cultural history of Missouri's indigenous peoples. Guided petroglyph tours are available seasonally.
Park Amenities
- 50 Campsites
- 11 Lodging Cabins
- Swimming Pool
- Camp Store
- 9.7 Miles of Trails
- 140 Bird Species
- Ancient Petroglyphs
- Big River Access
- Picnic Areas
- Fishing
Cabins & Lodging
Washington State Park offers 11 lodging cabins nestled among the trees along the Big River. These cabins provide a comfortable home base for exploring the park's trails, petroglyphs, and natural beauty.
In addition to cabins, the park has 50 campsites — some with electric hookups and others offering a more basic, back-to-nature experience. Whether you prefer the comfort of a cabin or the simplicity of a tent, Washington State Park has a spot for you.
Fish of the Big River
A 12-part educational series on the fish species, fishing techniques, and conservation practices of the Big River. Download any guide below.
Recreation
From the swimming pool to 9.7 miles of trails and 140 bird species, Washington State Park offers something for every outdoor enthusiast.
Swimming Pool
Cool off at the park's swimming pool — a great spot for families during the warmer months. The pool provides a safe and refreshing way to enjoy a summer day at the park.
Trails
Explore 9.7 miles of trails winding through the park's forests and along the Big River. Trails range from easy nature walks to more challenging hikes, with opportunities to see petroglyphs along the way.
9.7 milesBirding
With 140 recorded bird species, Washington State Park is a birder's paradise. From warblers and woodpeckers to raptors and waterfowl, there's always something to spot along the trails and river.
140 species
Camp Store
Stock up on essentials, snacks, firewood, and souvenirs at the park's camp store. A convenient stop for campers and day visitors alike.
Resources & Downloads
Download park maps and checklists to plan your visit.
Photo Gallery
Plan Your Visit to Washington State Park
Ancient petroglyphs, the Big River, and 2,157 acres of Missouri wilderness await. Reserve your campsite or cabin today.