Williamson No. 1
California — El Dorado County — Tr Weber Creek
Location
| State | California |
| County | El Dorado |
| River | Tr Weber Creek |
| Coordinates | 38.75550, -120.93720 |
Physical Characteristics
| NID Height | 42 ft |
| Dam Height | 42 ft |
| Dam Length | 240 ft |
| NID Storage | 117 acre-ft |
| Max Storage | 117 acre-ft |
| Surface Area | 11 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Poor |
| EAP Status | No |
| Last Inspection | April 15, 2025 |
| Inspection Frequency | 1 |
Dam Information
| Year Completed | 1926 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | Macy Mak Chan, Michael Chan, and Melinda Lau |
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.