Echo Lake Reservoir Reservoir Report

Last Updated: December 13, 2025

Echo Lake Reservoir, located in Union, Oregon, is a privately owned water resource that serves primarily for irrigation purposes.


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Summary

The reservoir, completed in 1922, boasts a dam height of 10 feet and a storage capacity of 300 acre-feet. Positioned along the West Eagle Creek, this rockfill dam spans 580 feet in length and has a hydraulic height of 8 feet.

Although the hazard potential is rated as low and the condition assessment is currently not rated, the reservoir is subject to state regulation, inspection, and enforcement to ensure its continued safe operation. The outlet gates consist of a slide (sluice gate), and the reservoir has a maximum discharge capacity of 205 cubic feet per second. Despite the lack of spillway information, the reservoir's location and design make it a crucial component of the local water management infrastructure in the region.

With its significance in supporting irrigation activities in the area, Echo Lake Reservoir stands as a vital water resource in Union, Oregon. As climate and water resource enthusiasts track the management and maintenance of this reservoir, its role in sustaining agricultural activities and water supply in the region remains a focal point for water conservation efforts and climate resilience initiatives.

Year Completed

1922

Dam Length

580

Dam Height

10

River Or Stream

WEST EAGLE CREEK

Primary Dam Type

Rockfill

Surface Area

30

Hydraulic Height

8

Drainage Area

1.1

Nid Storage

300

Structural Height

10

Outlet Gates

Slide (sluice gate)

Hazard Potential

Low

Nid Height

10
       
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.