West Valley
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| County | Modoc |
| Nearest City | Alturas |
| River/Stream | West Valley Cr |
| Coordinates | 41.22280, -120.41210 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 65 ft |
| Dam Height | 65 ft |
| Dam Length | 305 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 23,000 acre-ft |
| Max Storage | 23,000 acre-ft |
| Surface Area | 1,050 acres |
| Drainage Area | 136 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | South Fork Irrigation District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/04/2025 |
| Emergency Action Plan | Yes |