Allyn Dam
Low HazardPoor ConditionEmergency Action Plan: Not Required
Location
| State | Nebraska |
| County | Holt |
| Nearest City | REDBIRD |
| River/Stream | TR-NIOBRARA RIVER |
| Coordinates | 42.84467, -99.10074 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 25 ft |
| Dam Length | 1,042 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 138 acre-ft |
| Max Storage | 138 acre-ft |
| Normal Storage | 37 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 826 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Holt County |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/18/2023 |
| Emergency Action Plan | Not Required |