Hanna
Significant HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Lawrence |
| Nearest City | CHEYENNE CROSSING |
| River/Stream | SPEARFISH CREEK |
| Coordinates | 44.25809, -103.84134 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 300 ft |
Storage & Hydraulics
| NID Storage | 27 acre-ft |
| Max Storage | 27 acre-ft |
| Normal Storage | 21 acre-ft |
| Max Discharge | 150 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | USDA FS |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 09/24/2019 |
| Emergency Action Plan | Not Required |