Larson Dam 1626
Larson Dam 1626 is an earth dam located in Hamilton County, Nebraska, built in 1977. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Larson Dam 1626
The primary purpose of Larson Dam 1626 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 Upper Big Blue Natural Resources District (local government). It impounds the Tr-big Blue River near Kronborg.
The dam stands 26 feet tall and stretches 1,469 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 463 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1977, the structure is 49 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 06/29/2022.
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Location
| State | Nebraska |
| County | Hamilton |
| Nearest City | Kronborg |
| River/Stream | Tr-big Blue River |
| Coordinates | 41.00560, -97.95970 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 24 ft |
| Dam Length | 1,469 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 463 acre-ft |
| Max Storage | 463 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 679 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Upper Big Blue Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/29/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01626 |
| Federal ID | NE01626 |
| More Info | State Dam Safety Program |