Ponca Right Dike
High HazardSatisfactory ConditionEmergency Action Plan: Yes
Location
| State | South Dakota |
| County | Gregory |
| Nearest City | None |
| River/Stream | Willow Creek |
| Coordinates | 43.06097, -99.14477 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 130 ft |
| Year Completed | 1994 (32 years old) |
Storage & Hydraulics
| NID Storage | 828 acre-ft |
| Max Storage | 828 acre-ft |
| Drainage Area | 9 sq mi |
| Max Discharge | 30,200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | BIA |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/06/2020 |
| Emergency Action Plan | Yes |