Hergott Dam Reservoir Report
Nearby: Knigge 9623 Dam Wiedel Dam 8672
Last Updated: December 5, 2025
Hergott Dam, located in Thayer, Nebraska, serves multiple purposes including fire protection, stock watering, and small fish pond management.
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Summary
Built in 1960 by USDA NRCS, this privately owned earth dam stands at a height of 16.3 feet and has a storage capacity of 54.1 acre-feet. The dam's primary purpose is to provide essential water resources for the local community, with a low hazard potential and satisfactory condition assessment as of the last inspection in March 2020.
Situated along the TR-Little Blue River, Hergott Dam's location in Powell, Nebraska, makes it a vital water resource for the region. With a drainage area of 1.48 square miles and a maximum discharge capacity of 468 cubic feet per second, the dam plays a crucial role in controlling water flow and ensuring water availability for various uses. The dam is regulated by the NE DNR, with state permitting, inspection, and enforcement in place to maintain its integrity and safety.
In addition to its functional importance, Hergott Dam also provides a recreational spot with a surface area of 2 acres for fishing and other leisure activities. With a history of serving the community for over six decades, this dam stands as a testament to effective water resource management and climate resilience in Nebraska.
Year Completed |
1960 |
Dam Length |
230 |
Dam Height |
16.3 |
River Or Stream |
TR-LITTLE BLUE RIVER |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
16.3 |
Drainage Area |
1.48 |
Nid Storage |
54.1 |
Structural Height |
16.3 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
16 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Blue River Near Fairbury
|
230cfs |
Republican R Nr Hardy
|
97cfs |
Little Blue R At Hollenberg
|
70cfs |
Republican R At Scandia
|
110cfs |
Little Blue River Near Deweese
|
40cfs |
Turkey Creek Near De Witt
|
10cfs |
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.
Hergott Dam