Trail Bridge Saddle Dike Reservoir Report

Last Updated: December 13, 2025

Trail Bridge Saddle Dike is a significant structure located in Linn, Oregon, along the McKenzie River.


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Summary

Built in 1963 by the Bechtel Corporation, this earth dam stands at a height of 35 feet and spans a length of 1000 feet. With a primary purpose of hydroelectric power generation, the dam also serves recreational activities in the area.

Owned by a public utility, Trail Bridge Saddle Dike is regulated by the Federal Energy Regulatory Commission and undergoes inspections by the same agency. With a storage capacity of 2263 acre-feet and a hazard potential rated as high, the dam plays a crucial role in managing water resources in the region. The dam's location at T15S, R6E, S11, WM, makes it a key infrastructure for water management in Oregon.

Although the condition assessment of Trail Bridge Saddle Dike is not currently available, its risk assessment is rated as high. Emergency action plans are in place, but details on their preparation and guidelines adherence are not specified. With its importance for hydroelectric power generation and water resource management, Trail Bridge Saddle Dike stands as a vital structure in the region, closely monitored for any potential risks or hazards.

Year Completed

1963

Dam Length

1000

Dam Height

35

River Or Stream

McKenzie River

Primary Dam Type

Earth

Surface Area

73.4

Hydraulic Height

35

Drainage Area

184

Nid Storage

2263

Hazard Potential

High

Nid Height

35
       
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.