Larsen Lyman 1
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Pennington |
| Nearest City | NONE |
| River/Stream | TR CHEYENNE |
| Coordinates | 43.82999, -102.46666 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 300 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Normal Storage | 90 acre-ft |
| Max Discharge | 625 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | WALTER E. WITCHER |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |