Armstrong Dam Reservoir Report
Nearby: Hubl Road Dam Peil Livestock Dam
Last Updated: December 5, 2025
Armstrong Dam, located in Webster, Nebraska, is a privately owned structure designed by the USDA NRCS for fire protection, stock, or small fish pond purposes.
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Summary
Completed in 1960, this Earth-type dam stands at 16 feet tall and spans 340 feet in length. With a storage capacity of 107 acre-feet and a drainage area of 0.3 square miles, the dam serves as a crucial resource for the surrounding area.
Despite its importance, Armstrong Dam currently has a poor condition assessment and a low hazard potential. The dam has not been modified in recent years and is in need of maintenance and repair. The last inspection was conducted in August 2019, and the dam is inspected every 5 years. While the dam's emergency action plan and risk management measures are not clearly defined, the Nebraska Department of Natural Resources enforces state regulations and oversees the dam's operations.
Enthusiasts interested in water resources and climate change may find Armstrong Dam a compelling case study for the challenges faced by aging infrastructure in rural areas. As climate variability continues to impact water management practices, the need for sustainable and resilient dam structures like Armstrong Dam becomes increasingly apparent. The dam's location in the TR-ASH Creek watershed highlights the interconnectedness of water resources and ecosystem health, emphasizing the importance of proactive maintenance and risk management strategies for safeguarding communities and the environment.
Year Completed |
1960 |
Dam Length |
340 |
Dam Height |
16 |
River Or Stream |
TR-ASH CREEK |
Primary Dam Type |
Earth |
Surface Area |
12 |
Hydraulic Height |
16 |
Drainage Area |
0.3 |
Nid Storage |
107 |
Structural Height |
16 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
16 |
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.
Armstrong Dam