Mary Street
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Riverside |
| Nearest City | Riverside |
| River/Stream | Alessandro Wash |
| Coordinates | 33.93310, -117.37740 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 1,035 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 320 acre-ft |
| Max Storage | 320 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 6 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Riverside County Flood Control and Water Conservation District |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/01/2025 |
| Emergency Action Plan | Yes |