Puddingstone Diversion
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Los Angeles |
| Nearest City | San Dimas |
| River/Stream | San Dimas Wash |
| Coordinates | 34.13270, -117.78290 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 825 ft |
| Year Completed | 1928 (98 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 19 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Los Angeles County Department Of Public Works |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/18/2025 |
| Emergency Action Plan | Yes |