Ethan
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Hanson |
| Nearest City | NONE |
| River/Stream | TWELVE MILE CREEK |
| Coordinates | 43.54515, -97.94285 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 750 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 402 acre-ft |
| Max Storage | 402 acre-ft |
| Normal Storage | 210 acre-ft |
| Max Discharge | 1,370 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | GF&P |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 10/04/2022 |
| Emergency Action Plan | Not Required |