Isabel Lake No. 1
California — Santa Clara County — Tr Isabel Creek
Location
| State | California |
| County | Santa Clara |
| River | Tr Isabel Creek |
| Coordinates | 37.31790, -121.53960 |
Physical Characteristics
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 990 ft |
| NID Storage | 435 acre-ft |
| Max Storage | 435 acre-ft |
| Surface Area | 46 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Satisfactory |
| EAP Status | No |
| Last Inspection | June 6, 2025 |
| Inspection Frequency | 0.5 |
Dam Information
| Year Completed | 1948 |
| Primary Purpose | Water Supply |
| Dam Type | Earth |
| Owner Type | Private |
| Owner | O'Neal, Swenson and McDonald |
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.