Circle S
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Napa |
| Nearest City | Dam owner's home |
| River/Stream | Tr Milliken Cr |
| Coordinates | 38.41930, -122.27120 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 412 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 131 acre-ft |
| Max Storage | 131 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Circle R Ranch LLC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/12/2025 |
| Emergency Action Plan | Yes |