Janssen Dam
Janssen Dam is an earth dam located in Otoe County, Nebraska, built in 1977. It carries a Low hazard potential classification and has a fair condition assessment.
About Janssen Dam
The primary purpose of Janssen Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dale Janssen (private). It impounds the Tr-little Nemaha River near Talmage.
The dam stands 24 feet tall and stretches 1,100 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 165 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1977, the structure is 49 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/15/2021.
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Location
| State | Nebraska |
| County | Otoe |
| Nearest City | Talmage |
| River/Stream | Tr-little Nemaha River |
| Coordinates | 40.60238, -96.16360 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 1,100 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 165 acre-ft |
| Max Storage | 165 acre-ft |
| Normal Storage | 64 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 340 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Dale Janssen |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/15/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01566 |
| Federal ID | NE01566 |
| More Info | State Dam Safety Program |