Rink Creek Reservoir Reservoir Report

Last Updated: December 13, 2025

Located in Coos, Oregon, the Rink Creek Reservoir stands as a vital water resource managed by the local government for water supply purposes.


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Summary

Completed in 1939, this Earth dam spans 600 feet in length and reaches a height of 55 feet, with a storage capacity of 246 acre-feet. The reservoir is fed by Rink and Walker Creeks, covering a surface area of 10.2 acres and serving as a critical water source for the surrounding area.

Maintained by the Oregon Water Resources Department, the Rink Creek Reservoir is regulated, inspected, and enforced for compliance with state regulations. With a significant hazard potential due to its structural characteristics, the dam features a slide (sluice gate) outlet gate and has a maximum discharge capacity of 190 cubic feet per second. Despite being not rated for condition assessment, the reservoir undergoes regular inspections every three years to ensure its integrity and safety for water supply and emergency management.

Encompassing a drainage area of 0.64 square miles, the Rink Creek Reservoir plays a crucial role in securing water resources for the Coquille area. As climate change continues to impact water availability and quality, the reservoir's strategic location and design highlight its importance in safeguarding against water scarcity and supporting sustainable water management practices in the region.

Year Completed

1939

Dam Length

600

Dam Height

55

River Or Stream

RINK & WALKER CREEKS

Primary Dam Type

Earth

Surface Area

10.2

Hydraulic Height

53

Drainage Area

0.64

Nid Storage

246

Structural Height

55

Outlet Gates

Slide (sluice gate)

Hazard Potential

Significant

Nid Height

55
       
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.