Ankrom Dam Reservoir Report
Nearby: Zentner Dam Lah Eickhoff Eqip Dam
Last Updated: December 13, 2025
Ankrom Dam, located in Richardson County, Nebraska, is a privately owned structure designed by the USDA NRCS and completed in 2005.
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Summary
With a height of 28 feet and a length of 532 feet, this earth dam serves multiple purposes including flood risk reduction. It is regulated by the Nebraska Department of Natural Resources and is subject to regular inspections, with the last one conducted in May 2016, indicating a satisfactory condition and low hazard potential.
Situated on Deroin Creek, the Ankrom Dam has a storage capacity of 27 acre-feet and a drainage area of 0.3 square miles. While the dam has not undergone any significant modifications since its completion, it has a maximum discharge capacity of 174 cfs. Despite being a non-USACE structure, it plays a crucial role in managing water resources in the area and contributes to the overall climate resilience of the region.
With its strategic location and design, Ankrom Dam stands as a testament to effective water management practices in Nebraska. As a key component in the state's regulatory framework, this dam not only helps mitigate flood risks but also supports the surrounding ecosystem. As climate enthusiasts, it is important to recognize the vital role such structures play in promoting sustainability and resilience in the face of changing environmental conditions.
Year Completed |
2005 |
Dam Length |
532 |
Dam Height |
28 |
River Or Stream |
DEROIN CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Drainage Area |
0.3 |
Nid Storage |
27 |
Structural Height |
30 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big Nemaha River At Falls City
|
310cfs |
Little Nemaha River At Auburn
|
82cfs |
Tarkio River At Fairfax Mo
|
55cfs |
North Fork Big Nemaha River At Humboldt
|
67cfs |
Missouri River At Rulo
|
26600cfs |
Nishnabotna River Above Hamburg
|
605cfs |
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.
Ankrom Dam