Zahn Dam
Zahn Dam is an earth dam located in Otoe County, Nebraska, built in 1952. It carries a Low hazard potential classification and has a poor condition assessment.
About Zahn Dam
The primary purpose of Zahn Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Sarah S Krause Trust (private). It impounds the Tr-s Fk Little Nemaha River near Talmage.
The dam stands 32 feet tall and stretches 455 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 147 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1952, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/15/2021.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Nebraska |
| County | Otoe |
| Nearest City | Talmage |
| River/Stream | Tr-s Fk Little Nemaha River |
| Coordinates | 40.52455, -96.13442 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 455 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 147 acre-ft |
| Max Storage | 147 acre-ft |
| Normal Storage | 9 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 730 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Sarah S Krause Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/15/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00370 |
| Federal ID | NE00370 |
| More Info | State Dam Safety Program |