Klasna Dam Reservoir Report

Last Updated: December 13, 2025

Klasna Dam, located in Boyd, Nebraska, along the Crooked Creek, is a vital piece of infrastructure designed for flood risk reduction and other purposes.


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Summary

Completed in 1932, this earth dam stands at a height of 26.3 feet and has a hydraulic height of 28.6 feet, providing essential protection to the surrounding area. With a storage capacity of 148.4 acre-feet and a drainage area of 6.15 square miles, Klasna Dam plays a crucial role in managing water resources in the region.

Owned and regulated by the local government and overseen by the Nebraska Department of Natural Resources, Klasna Dam has a low hazard potential and is deemed to be in satisfactory condition as of the last assessment in May 2019. With a maximum discharge capacity of 1230 cubic feet per second, this dam ensures the safety and security of the community by mitigating flood risks and maintaining normal storage levels of 34.2 acre-feet. The dam's location in Spencer, Nebraska, highlights its importance in safeguarding the surrounding area from potential water-related disasters.

As an integral part of the St. Paul District in Nebraska, Klasna Dam stands as a testament to effective water resource management and climate resilience efforts in the region. With its stone core and soil foundation, this dam continues to serve its primary purpose admirably, showcasing the intersection of engineering ingenuity and environmental stewardship. For water resource and climate enthusiasts, Klasna Dam represents a prime example of how infrastructure can be designed and managed to safeguard communities and ecosystems from the impacts of extreme weather events.

Year Completed

1932

Dam Length

830

Dam Height

26.3

River Or Stream

CROOKED CREEK

Primary Dam Type

Earth

Surface Area

9.6

Hydraulic Height

28.6

Drainage Area

6.15

Nid Storage

148.4

Structural Height

26.3

Hazard Potential

Low

Foundations

Soil

Nid Height

29
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.