Krumbo Dam Reservoir Report

Last Updated: December 14, 2025

Krumbo Dam, located in Harney, Oregon, stands as a testament to the collaborative efforts of the U.S.


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Summary

Fish & Wildlife Service in managing the resources of Krumbo Creek. Completed in 1957, this earth dam serves the primary purpose of recreation while also supporting water supply needs. With a height of 35 feet and a length of 505 feet, the dam boasts impressive storage capabilities, holding a maximum of 5365 acre-feet of water and covering a surface area of 198 acres.

The dam's structural integrity is regularly inspected, with the most recent assessment in August 2018 deeming its condition satisfactory and its hazard potential low. With a moderate risk assessment rating of 3, risk management measures are in place to ensure the safety and stability of the dam. Despite its age, Krumbo Dam has undergone modifications in 1983 to enhance its structural capabilities, ensuring its continued operation and contribution to the surrounding ecosystem.

As a key feature in the Portland District managed by the Fish and Wildlife Service, Krumbo Dam not only provides recreational opportunities but also plays a vital role in water supply management. With its strategic location and reliable performance, this dam stands as a model for sustainable water resource management in the region, highlighting the importance of infrastructure in mitigating the impacts of climate change on water availability and ecosystem health.

Years Modified

1983 - Structural

Year Completed

1957

Dam Length

505

Dam Height

35

River Or Stream

KRUMBO CREEK

Primary Dam Type

Earth

Surface Area

198

Hydraulic Height

33

Drainage Area

33.3

Nid Storage

5365

Structural Height

39

Outlet Gates

Other Controlled

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

39
       
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.