Diemer Ozone Contact Basin
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Orange |
| Nearest City | Yorba Linda |
| River/Stream | OFFSTREAM |
| Coordinates | 33.91150, -117.82150 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 1,012 ft |
| Year Completed | 2011 (15 years old) |
Storage & Hydraulics
| NID Storage | 23 acre-ft |
| Max Storage | 23 acre-ft |
| Surface Area | 0 acres |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Metropolitan Water District Of Southern California |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/13/2025 |
| Emergency Action Plan | Yes |