Big Sage
High HazardSatisfactory ConditionEmergency Action Plan: No
Location
| County | Modoc |
| Nearest City | Alturas |
| River/Stream | Rattlesnake Cr |
| Coordinates | 41.57780, -120.62770 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 680 ft |
| Year Completed | 1921 (105 years old) |
Storage & Hydraulics
| NID Storage | 77,000 acre-ft |
| Max Storage | 77,000 acre-ft |
| Surface Area | 5,270 acres |
| Drainage Area | 107 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Hot Spring Valley Water District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/22/2025 |
| Emergency Action Plan | No |