Tvinnereim Trust Dam
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Day |
| River/Stream | TR-Unnamed Lake |
| Coordinates | 45.43477, -97.57764 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 400 ft |
| Year Completed | 2015 (11 years old) |
Storage & Hydraulics
| NID Storage | 280 acre-ft |
| Max Storage | 280 acre-ft |
| Normal Storage | 149 acre-ft |
| Surface Area | 35 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 168 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Irene J. Tvinnereim Irrevocable Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |