Smith Reservoir Report

Last Updated: December 13, 2025

Smith is a hydroelectric dam located on the picturesque Smith River in Oregon, with a primary purpose of generating power and providing recreational opportunities.


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Summary

Built in 1963 by the Bechtel Corporation, this earth dam stands at an impressive height of 215 feet and has a maximum storage capacity of 17,530 acre-feet. The dam is equipped with a controlled spillway and a Tainter (radial) outlet gate, ensuring efficient water management.

With a hazard potential rated as high and a risk assessment of very high, Smith Dam is closely monitored by the Federal Energy Regulatory Commission. Despite its age, the dam's condition assessment is listed as not available, highlighting the need for continued inspection and risk management measures. The surrounding area offers a surface area of 170 acres for recreational activities, attracting both water resource and climate enthusiasts to its scenic location in Linn County.

As one of the key structures in the region, Smith Dam presents both opportunities and challenges for water resource management. Its strategic location in the Portland District and close oversight by federal agencies make it a fascinating site for those interested in the intersection of water resources, climate, and infrastructure development. The dam's role in providing clean energy and recreational benefits underscores the importance of sustainable water management practices in the face of changing climate conditions.

Year Completed

1963

Dam Length

1100

Dam Height

215

River Or Stream

Smith River

Primary Dam Type

Earth

Surface Area

170

Hydraulic Height

208

Drainage Area

18.7

Nid Storage

17530

Structural Height

235

Outlet Gates

Tainter (radial) - 1

Hazard Potential

High

Foundations

Rock

Nid Height

235
       
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.