Helmink Dam
Helmink Dam is an earth dam located in Lancaster County, Nebraska, built in 2000. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Helmink Dam
Helmink Dam is a dam in Lancaster, Nebraska. The dam is owned by Ironhorse Acres Association (private). It impounds the Tr-mid Br Big Nemaha River near Firth.
The dam stands 24 feet tall and stretches 250 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 186 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2000, the structure is 26 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/22/2021.
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Location
| State | Nebraska |
| County | Lancaster |
| Nearest City | Firth |
| River/Stream | Tr-mid Br Big Nemaha River |
| Coordinates | 40.55398, -96.60222 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 21 ft |
| Dam Length | 250 ft |
| Year Completed | 2000 (26 years old) |
Storage & Hydraulics
| NID Storage | 186 acre-ft |
| Max Storage | 186 acre-ft |
| Normal Storage | 55 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 485 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Ironhorse Acres Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/22/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02532 |
| Federal ID | NE02532 |
| More Info | State Dam Safety Program |