Allemang Lagoon Dam Reservoir Report
Last Updated: December 13, 2025
Allemang Lagoon Dam, located in Antelope, Nebraska, is a private-owned structure that plays a crucial role in water resource management in the area.
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Summary
Completed in 2012, this buttress dam stands at a height of 12 feet and has a storage capacity of 74.1 acre-feet, providing essential water storage for the surrounding region. With a low hazard potential and a satisfactory condition assessment, the dam ensures the safety and security of the local community.
Managed by the Nebraska Department of Natural Resources, Allemang Lagoon Dam is designed to regulate water flow along the TR-Elkhorn River. Its primary purpose is categorized as "Other," reflecting its versatile role in water resource management. The dam's stone core and soil foundation contribute to its structural integrity, while its inspection frequency of 5 years ensures ongoing maintenance and safety compliance.
With a drainage area of 0.13 square miles and a surface area of 7.1 acres, Allemang Lagoon Dam is a vital infrastructure for the region's water supply and climate resilience efforts. As climate change continues to impact water resources, structures like this play a crucial role in mitigating risks and ensuring sustainable water management practices for the future.
Year Completed |
2012 |
Dam Length |
2650 |
Dam Height |
12 |
River Or Stream |
TR-ELKHORN RIVER |
Primary Dam Type |
Buttress |
Surface Area |
7.1 |
Hydraulic Height |
12 |
Drainage Area |
0.13 |
Nid Storage |
74.1 |
Structural Height |
12 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
12 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Elkhorn River At Ewing
|
89cfs |
Verdigre C Nr Verdigre
|
206cfs |
Bazile Creek At Center
|
85cfs |
Niobrara River Nr. Verdel
|
517cfs |
North Fork Elkhorn River Near Pierce
|
96cfs |
Bazile Creek Near Niobrara
|
192cfs |
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.
Allemang Lagoon Dam