Several volunteer groups help keep San Joaquin County Parks looking their best. They are:
- Oak Grove Docents: Serving the Oak Grove Regional Park Nature Center - (209) 953-8814
- Micke Grove Zoo: Contributions and Volunteers - (209) 331-2010
- Japanese Garden Docents: Serving Micke Grove Park's Japanese Garden - (209) 331-2050
- S.J. County Park Volunteers: Serving County Parks - (209) 953-8800
- Delta Fly Fishers: Fishing Derby For Kids & Trout Bout - www.deltaflyfishers.com
Monetary donations or memorial gifts are welcomed through the county's Park Donation Trust and Park Endowment Trust funds. Gifts can be designated toward specific park improvements (tree replacement, playground equipment, park benches, etc.) or contributed to continuing improvement projects. Memorial trees with no signage may also be planted in memory of a loved one, trees are selected and planted by parks staff. For more information or to make a donation, call (209) 953-8800 or 331-7400.