Emigrant Coaxial Dike Reservoir Report

Last Updated: December 5, 2025

The Emigrant Coaxial Dike, located in Ashland, Oregon, is a federal-owned structure designed by the Bureau of Reclamation to address flood risk reduction along the Emigrant Creek.


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Summary

Completed in 1960, this earth-type dam stands at 26 feet high and spans 500 feet in length, with a storage capacity of 46,700 acre-feet. With a primary purpose of flood risk reduction, this structure also supports irrigation and recreation activities in the area.

Despite its high hazard potential, the condition assessment of the Emigrant Coaxial Dike is currently not available. However, regular inspections are conducted by the Bureau of Reclamation to ensure the safety and integrity of the dam. In the event of emergencies, an Emergency Action Plan (EAP) is in place, last revised in August 2020. The risk assessment for this structure is categorized as high, emphasizing the importance of proactive risk management measures to safeguard the surrounding communities and environment.

Year Completed

1960

Dam Length

500

Dam Height

22

River Or Stream

EMIGRANT CREEK

Primary Dam Type

Earth

Surface Area

806

Hydraulic Height

25

Drainage Area

62

Nid Storage

46700

Structural Height

26

Hazard Potential

High

Foundations

Rock

Nid Height

26
       
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.