Dyer
California — Alameda County
Location
| State | California |
| County | Alameda |
| Coordinates | 37.75980, -121.67400 |
Physical Characteristics
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 1,850 ft |
| NID Storage | 525 acre-ft |
| Max Storage | 525 acre-ft |
| Surface Area | 25 acres |
Safety Classification
| Hazard Potential | High |
| Condition Assessment | Fair |
| EAP Status | Yes |
| Last Inspection | November 18, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 2011 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | State |
| Owner | California Department of Water Resources |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.