Larsen Dam
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Lyman |
| Nearest City | OACOMA |
| River/Stream | DRY DRAW |
| Coordinates | 43.82979, -99.56955 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 350 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 280 acre-ft |
| Max Storage | 280 acre-ft |
| Normal Storage | 183 acre-ft |
| Surface Area | 31 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 600 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | S&PL |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 10/19/2017 |
| Emergency Action Plan | Not Required |