19091 S Manthey Rd, Lathrop, CA 95330
Open daily sunrise to sunset.
(209) 953-8800 or 331-7400
WEBSITEThe park, located between Tracy and Manteca off I-5, has a large, two-lane boat ramp with a floating dock.
Mossdale’s ramp offers access to the San Joaquin, Middle and Old rivers. Shaded picnic areas and barbecues, restrooms, fishing access, and a boat launch complete the facility.