Caswell Memorial State Park
California’s Last Riparian Oak Woodland on the Stanislaus River
Caswell Memorial State Park near Ripon, California, preserves one of the last remaining riparian oak woodlands in the Central Valley — an ecosystem that once stretched for hundreds of miles along California’s great rivers but has been reduced to a tiny fraction of its original range. This 258-acre park along the Stanislaus River is a living museum of what the Valley floor looked like before agriculture transformed the landscape.
The park’s towering valley oaks, some centuries old, create a cathedral-like canopy that shelters endangered species including the riparian brush rabbit — one of the most endangered mammals in North America.
Hiking & Nature
Several easy to moderate trails wind beneath the massive oaks and along the Stanislaus River, offering exceptional wildlife viewing and photography opportunities. The shaded trails are a welcome escape from the Central Valley heat.
- Oak Forest Nature Trail: A self-guided interpretive loop through the heart of the ancient oak woodland
- River Trail: Follows the Stanislaus River with seasonal wildflower displays and frequent wildlife sightings
- Wildlife to Watch: Great blue herons, red-tailed hawks, woodpeckers, wild turkeys, deer, and the rare riparian brush rabbit
Fishing & River Activities
The Stanislaus River meanders through the park, offering excellent fishing and seasonal water activities.
- Fish Species: Largemouth bass, smallmouth bass, striped bass, catfish, crappie, bluegill, and seasonal Chinook salmon runs
- River Recreation: Swimming, canoeing, kayaking, and tubing when conditions permit. Life jackets recommended — water temperatures and levels change rapidly.
- License: Valid California fishing license required for ages 16+
Camping
- 64 family campsites nestled within the oak forest canopy — camping beneath centuries-old trees
- Accommodates tents, trailers up to 21 feet, and motorhomes up to 24 feet
- Each site has a picnic table, fire ring, and bear-proof food locker
- Flush toilets, hot showers, and drinking water available. No hookups.
- Group campsites available for larger parties
- Open year-round. Reserve via Reserve California
Visitor Tips
- Best Time: Spring (wildflowers and mild temps) and fall (salmon runs and comfortable camping). Summer is extremely hot — plan activities for early morning.
- Quiet Hours: 10 PM–6 AM. Generators allowed only during designated hours.
- River Safety: Always wear life jackets. Cold water and changing levels can be dangerous even on warm days.
- Entry Fee: $10 per vehicle.
