Koch Dam 1 Reservoir Report
Last Updated: December 6, 2025
Koch Dam 1, located in Eustis, Nebraska, was completed in 1966 by the USDA NRCS and stands as a vital structure for flood risk reduction and other purposes in the area.
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Summary
This private dam is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections to ensure its safety and effectiveness. With a height of 20 feet and a length of 287 feet, Koch Dam 1 provides a storage capacity of 56 acre-feet and serves a drainage area of 0.5 square miles.
Despite its low hazard potential, Koch Dam 1 plays a crucial role in managing water resources in the region, with a maximum discharge capacity of 361 cubic feet per second. The dam's earth and stone construction, along with its soil foundation, contribute to its structural integrity. While its condition assessment is currently not rated, the dam is subject to regular inspections every five years to uphold its safety standards and operational efficiency.
As a key component in the water infrastructure of Frontier County, Nebraska, Koch Dam 1 exemplifies the collaborative efforts between private owners and regulatory agencies to ensure the sustainable management of water resources in the face of changing climate conditions. The dam's location on Plum Creek underscores its importance in mitigating flood risks and supporting the local ecosystem. With ongoing monitoring and maintenance, Koch Dam 1 continues to fulfill its role in safeguarding the community against water-related hazards and contributing to the overall resilience of the region's water systems.
Year Completed |
1966 |
Dam Length |
287 |
Dam Height |
20 |
River Or Stream |
TR-PLUM CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
20 |
Drainage Area |
0.5 |
Nid Storage |
56 |
Structural Height |
20 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Spring Creek Nr Overton
|
7cfs |
Platte River Near Overton
|
1040cfs |
Republican River At Cambridge
|
60cfs |
Buffalo Creek Nr Overton Nebr
|
4cfs |
Platte R Mid Ch
|
1190cfs |
Elm Creek Nr Elm Creek
|
0cfs |
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.
Koch Dam 1
Gallagher Canyon SRA