Isham Dam 9878 Reservoir Report
Last Updated: December 7, 2025
Isham Dam 9878, located in Dawes, Nebraska, was completed in 1950 and serves multiple purposes including fire protection, stock, and small fish pond management.
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Summary
This privately-owned earth dam stands at a height of 18.7 feet and has a storage capacity of 224.4 acre-feet. Situated on TR-Madden Creek, the dam is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections to ensure its structural integrity.
With a low hazard potential and a condition assessment that is currently not rated, Isham Dam 9878 plays a crucial role in managing water resources in the region. Its strategic location and design make it a valuable asset for water supply and recreational activities in the area. The dam's emergency action plan status and risk assessment measures are yet to be fully determined, highlighting the need for ongoing monitoring and maintenance to safeguard against potential risks and ensure the safety of surrounding communities.
As part of the Omaha District, Isham Dam 9878 stands as a testament to the importance of responsible dam management in mitigating climate-related risks and preserving water resources for future generations. This structure serves as a key component in the region's water infrastructure, demonstrating the intersection of water resource management and climate resilience in a rapidly changing environment.
Year Completed |
1950 |
Dam Length |
1000 |
Dam Height |
18.7 |
River Or Stream |
TR-MADDEN CREEK |
Primary Dam Type |
Earth |
Surface Area |
27.6 |
Hydraulic Height |
18.7 |
Drainage Area |
4.34 |
Nid Storage |
224.4 |
Structural Height |
18.7 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
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.
Isham Dam 9878