Blaine Dam #2 Reservoir Report

Last Updated: December 13, 2025

Blaine Dam #2, located in Wasco, Oregon, is a privately owned earth dam primarily used for irrigation purposes.


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Summary

Standing at a height of 27 feet, this dam has a normal storage capacity of 258 acre-feet. Despite its low hazard potential, the dam is state-regulated by the Oregon Water Resources Department and undergoes regular inspections to ensure its safety and functionality.

Designed by TENNESON, Blaine Dam #2 features needle outlet gates and is not associated with any other structures. The dam's last inspection took place in October 2020, with a frequency of every 6 years. While the condition assessment is currently not rated, the dam's emergency action plan status and risk management measures remain unspecified.

Water resource and climate enthusiasts may find Blaine Dam #2 an intriguing structure due to its role in supporting irrigation activities in the region. As a key component of water management in Wasco County, this dam serves as a reminder of the importance of maintaining and regulating such infrastructure to ensure sustainable water usage and environmental protection. Its location and design details make it a noteworthy feature in the local water resource landscape.

Dam Height

27

Primary Dam Type

Earth

Nid Storage

258

Outlet Gates

Needle

Hazard Potential

Low

Nid Height

27
       
Seasonal Comparison

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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.