Foss Valley
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Napa |
| Nearest City | N/A |
| River/Stream | Tr Milliken Cr |
| Coordinates | 38.42760, -122.27860 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 56 ft |
| Dam Height | 56 ft |
| Dam Length | 2,500 ft |
| Year Completed | 1988 (38 years old) |
Storage & Hydraulics
| NID Storage | 800 acre-ft |
| Max Storage | 800 acre-ft |
| Surface Area | 31 acres |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Atlas Peak Vineyards |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/12/2025 |
| Emergency Action Plan | Yes |