Modesto Reservoir
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Stanislaus |
| Nearest City | Waterford |
| River/Stream | Tr Tuolumne Rv |
| Coordinates | 37.66200, -120.68070 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 1,235 ft |
| Year Completed | 1911 (115 years old) |
Storage & Hydraulics
| NID Storage | 40,000 acre-ft |
| Max Storage | 40,000 acre-ft |
| Surface Area | 3,800 acres |
| Drainage Area | 10 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Modesto Irrigation District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/30/2025 |
| Emergency Action Plan | Yes |