Just over four miles from Ripon, Caswell Memorial State Park Campground sits along the Stanislaus River in California's Central Valley. This state park campground operates without hookups but accommodates RVs up to 28 feet, with online reservations available through California State Parks.
Most campsites offer substantial shade from mature trees, with many positioned close to river access points. Barbara B. notes that "most of the sites are close to the entrance to the river" and campers can select from various spots with different privacy levels. Site sizes vary considerably—some provide ample space for multiple tents while others feel more compact with surrounding vegetation.
The Stanislaus River serves as the campground's main attraction, offering a 45-minute float from the camping area down to the day-use beach. Tubing proves popular during warmer months, though the water runs cold year-round. Several hiking trails wind through the park, and fishing access draws anglers to the riverbank. Weekend programming includes movies and nature demonstrations for children when available.
Mosquitoes present a significant challenge, particularly during summer months when river conditions and dense vegetation create ideal breeding habitat. Multiple reviewers emphasize bringing bug spray. Bathroom facilities receive mixed feedback—some visitors praise their cleanliness while others report maintenance issues during busy periods. Weekends typically see full occupancy with family groups, creating a lively atmosphere that extends into evening hours.
Campers exploring the region can find places to camp around Ripon for additional options. The park's proximity to the Central Valley makes it accessible for weekend getaways, though nights cool down regardless of daytime temperatures.
Description
Caswell Memorial Campground
Warning 1 Alert is In Effect
There is 1 alert for this campground. Camp safely!
Warning 1 Alert is In Effect
There is 1 alert for this campground. Camp safely!
WELCOME TO CASWELL MSP
Campers, please note the length for each campsite, if you are booking for future dates, please reserve the appropriate site for your RV, trailer, etc. or any other vehicles you may be arriving in. We do not offer overflow parking, and each reservation is strictly 2 vehicles at the campsite, 8 people at all times.
18’ Sites** :**
2, 3, 4, 6, 7, 11, 12, 17, 21, 22, 24, 25, 27, 28, 29(ADA), 30, 31, 33, 35, 36, 37, 38, 39, 40, 41(ADA), 42, 43, 44(ADA), 47, 48, 50, 51, 53, 54, 56(ADA), 58, 60, 61, 63
21’ Sites** :**
14, 15, 16, 18, 19, 20, 23, 32, 34
**24’ Sites** :**
13, 45, 46, 49, 52, 55, 57, 59, 62, 64
**Max length is strictly 24’.
If you have any questions, please call (209) 599-3810 Monday – Thursday 8 a.m. to 8 p.m.
RV Road Trip Guides
Location
Public CampgroundCaswell Memorial State Park Campground is located in California
Directions
From 99, take the Austin Rd. exit. Head South on Austin Rd. and you will run into the park at the end of the road.
Address
28000 South Austin Rd.
Ripon, CA 95366-9527
Coordinates
37.7005157470703 N
121.17830657959 W
Connectivity
- T-Mobile5GExcellent CoverageVerified by 14 usersLast on 3/19/26
- VerizonLTESome Coverage
- AT&T5GGood CoverageVerified by 1 userLast on 3/19/26
Connectivity
- T-Mobile5GExcellent CoverageVerified by 14 usersLast on 3/19/26
- VerizonLTESome Coverage
- AT&T5GGood CoverageVerified by 1 userLast on 3/19/26
Access
Site Types
- Tent Sites
- RV Sites
- Standard (Tent/RV)
- Group
Features
For Campers
- Picnic Table
- Firewood Available
- Phone Service
- Reservable
- WiFi
- Showers
- Toilets
- Alcohol
- Fires
Drive Time
- 23 min from Modesto, CA
- 25 min from Stockton, CA
- 56 min from Merced, CA
- 1 hr 14 min from San Jose, CA

























