Take I5 to Hwy 12 (Lodi Exit). Go west toward Rio Vista on Hwy 12 about 10 miles. After second drawbridge go about 2 miles, then turn left on Jackson Slough Rd. At the end of Jackson Slough Rd, turn left onto West Brannan Island Rd. Go 1 mile. KOA is on your left across the levy road from Sacramento Delta Bay Marina on your right.