Ahrens Dam Reservoir Report
Last Updated: December 6, 2025
Ahrens Dam, located in Cass County, Nebraska, is a privately owned structure designed by the USDA NRCS and regulated by the Nebraska Department of Natural Resources.
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Summary
Completed in 1976, this earth dam stands at a height of 22 feet and serves multiple purposes including flood risk reduction. With a normal storage capacity of 24 acre-feet and a drainage area of 0.3 square miles, the dam plays a crucial role in managing water resources in the area.
Despite its low hazard potential, the dam's condition assessment is marked as poor as of May 2018. With a history of inspections every five years, there is a need for further assessment and potential maintenance to ensure the structure's longevity and effectiveness. The dam's location on the Weeping Water Creek, with a maximum discharge capacity of 222 cubic feet per second, highlights its importance in mitigating flood risks and managing water flow in the region.
As a key component of the local water infrastructure, Ahrens Dam plays a vital role in protecting against floods and managing water resources in Cass County, Nebraska. With its designer being the USDA NRCS and supervision by the Nebraska DNR, this earth dam stands as a testament to collaborative efforts in ensuring water resource management and climate resilience in the region.
Year Completed |
1976 |
Dam Length |
295 |
Dam Height |
22 |
River Or Stream |
TR-WEEPING WATER CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
21 |
Drainage Area |
0.3 |
Nid Storage |
64 |
Structural Height |
22 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Weeping Water Creek At Union
|
20cfs |
Platte R At Louisville Ne
|
5580cfs |
Missouri River At Nebraska City
|
22500cfs |
Platte R Nr Ashland
|
6290cfs |
Wahoo Cr At Ashland
|
78cfs |
Salt Creek At Greenwood
|
125cfs |
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.
Ahrens Dam