San Joaquin County Parks close daily from 30 minutes after sunset to sunrise unless otherwise posted. Micke Grove, Oak Grove, Dos Reis, and Mossdale Crossing regional parks have specific posted hours; camping is only allowed at Dos Reis. After-hours presence is a trespass under Penal Code §602 and may be cited by the Sheriff's Office or Park Rangers.
San Joaquin County Parks Ordinance (adopted under Title 9 of the County Code) sets closing hours for all county-operated regional parks, including Micke Grove Regional Park (Lodi), Oak Grove Regional Park (Stockton), Dos Reis Regional Park (Lathrop on the San Joaquin River), Mossdale Crossing (Lathrop), and Stillman L. Magee (Clements). Default closing is 30 minutes after sunset, reopening at sunrise, though some facilities (Micke Grove Zoo, golf course, picnic areas) have specific posted hours. Overnight camping is only permitted at Dos Reis Regional Park with an advance reservation through the Parks Department. After-hours access is prohibited absent an event permit and constitutes trespass under California Penal Code §602. The Park Rangers and Sheriff's Office enforce closures; gates at vehicle entrances are locked at closing. Boat launch ramps at Dos Reis and Mossdale Crossing operate extended hours (5:00 AM to 10:00 PM) during summer fishing season. Consumption of alcohol, unleashed dogs, and amplified sound without permit are prohibited during operating hours as well.
After-hours trespass: $100–$250 infraction (SJ Parks ordinance) or misdemeanor PC §602. Unauthorized camping: $250–$500. Overnight vehicle in closed lot: tow + $100 plus tow fees. Vandalism: Penal Code charges + restitution.
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See how San Joaquin County's park curfew rules stack up against other locations.
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