Hebron Dam Reservoir Report
Nearby: Hintz Dam Dondlinger Dam
Last Updated: December 5, 2025
Hebron Dam, located in Thayer, Nebraska, is a local government-owned structure designed by USDA NRCS to provide flood risk reduction along the TR-Little Blue River.
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Summary
Completed in 1976, this earth dam stands at a height of 39 feet and has a hydraulic height of 38 feet, with a structural height of 46 feet. With a storage capacity of 685 acre-feet and a normal storage of 79 acre-feet, the dam covers a surface area of 10 acres and has a drainage area of 1.1 square miles.
This dam, regulated by the Nebraska Department of Natural Resources, has a high hazard potential but is currently in satisfactory condition as of the last assessment in March 2021. It has been modified in 1992 for hydraulic purposes and is inspected regularly to ensure its safety and functionality. Despite its primary purpose of flood risk reduction, Hebron Dam also serves as a vital water resource for the surrounding area, showcasing the importance of proper maintenance and management of such infrastructure in the face of changing climate patterns and water resource demands.
Overall, Hebron Dam stands as a crucial piece of infrastructure in Nebraska, providing essential flood protection and water storage capabilities in the region. With its history of construction and ongoing regulatory oversight, this dam exemplifies the intersection of water resource management, climate resilience, and infrastructure maintenance in ensuring the safety and security of communities along the TR-Little Blue River.
Years Modified |
1992 - Hydraulic |
Year Completed |
1976 |
Dam Length |
992 |
Dam Height |
39 |
River Or Stream |
TR-LITTLE BLUE RIVER |
Primary Dam Type |
Earth |
Surface Area |
10 |
Hydraulic Height |
38 |
Drainage Area |
1.1 |
Nid Storage |
685 |
Structural Height |
46 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
46 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Hebron Dam