Thunder Lake
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | Minnesota |
| County | Cass |
| Nearest City | Boy River |
| River/Stream | Willow River-TR |
| Coordinates | 46.96047, -93.95298 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 8,640 acre-ft |
| Max Storage | 8,640 acre-ft |
| Normal Storage | 7,750 acre-ft |
| Surface Area | 1,347 acres |
| Drainage Area | 16 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | MNDNR-Fisheries |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 07/18/2024 |
| Emergency Action Plan | Not Required |