Upper Blackwelder Dam
California — Yuba County — HUTCHINSON CREEK
Location
| State | California |
| County | Yuba |
| River | HUTCHINSON CREEK |
| Coordinates | 39.15833, -121.38333 |
Physical Characteristics
| NID Height | 19 ft |
| Dam Height | 14 ft |
| Dam Length | 1,000 ft |
| NID Storage | 330 acre-ft |
| Max Storage | 330 acre-ft |
| Surface Area | 35 acres |
Safety Classification
| Hazard Potential | Significant |
| Condition Assessment | Not Available |
| EAP Status | Yes |
| Last Inspection | July 18, 2022 |
| Inspection Frequency | 5 |
Dam Information
| Year Completed | 1955 |
| Primary Purpose | Flood Risk Reduction |
| Dam Type | Rockfill |
| Owner Type | Federal |
| Owner | USAF ACC |
| Other Name | Upper Blackwelder Lake |
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.