Bryant Mt. Dam Reservoir Report

Last Updated: December 5, 2025

Bryant Mt.


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Summary

Dam, located in Malin, Oregon, is a privately owned structure primarily utilized for irrigation purposes. Completed in 1946, this earth dam stands at a height of 15 feet with a hydraulic height of 11 feet, and a structural height of 15 feet. With a normal storage capacity of 80 acre-feet and a surface area of 28.7 acres, the dam serves to regulate surface and seepage water within its drainage area of 4.3 square miles.

Despite its low hazard potential, Bryant Mt. Dam is subject to state regulation, inspection, and enforcement by the Oregon Water Resources Department. The last inspection in August 2018 deemed the dam's condition as "Not Rated," indicating a need for further assessment. The dam does not have an Emergency Action Plan (EAP) in place, suggesting a potential area for improvement to ensure preparedness for emergency situations.

Owned by a private entity, Bryant Mt. Dam plays a crucial role in supporting agricultural activities in the region. With its modest dimensions and a history dating back to the mid-20th century, this structure stands as a testament to the importance of water resource management in sustaining local ecosystems and economies.

Year Completed

1946

Dam Length

347

Dam Height

15

River Or Stream

SURFACE AND SEEPAGE WATER

Primary Dam Type

Earth

Surface Area

28.7

Hydraulic Height

11

Drainage Area

4.3

Nid Storage

80

Structural Height

15

Hazard Potential

Low

Nid Height

15
       
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.