Gardiner Reservoir Report

Last Updated: December 15, 2025

Gardiner, a private-owned water resource located in Douglas County, Oregon, serves as a crucial Fish and Wildlife Pond along an unnamed stream or tributary of the Umpqua River.


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Summary

This Earth-type dam stands at a height of 25 feet, providing storage capacity for 90 acre-feet of water with a surface area of 8 acres. Despite its modest size, Gardiner poses a significant hazard potential and undergoes inspections every 3 years to ensure its structural integrity and safety.

Managed by the Oregon Water Resources Department (OWRD), Gardiner's primary purpose is to support the local ecosystem by providing habitat for fish and wildlife. Situated in S26, T21.00S, R12.00W of WM, this dam with slide gates for outlet control serves as an essential water management infrastructure in the region. The dam's significance is underscored by its state-regulated status, with permitting, inspection, and enforcement conducted by OWRD to maintain compliance and safety standards.

With Congressman Peter A. DeFazio representing the area, Gardiner reflects the intricate interplay between water resource management, environmental conservation, and regulatory oversight. As climate change impacts continue to shape water dynamics in the region, structures like Gardiner underscore the importance of sustainable water resource management practices to ensure the resilience of ecosystems and communities in the face of changing climatic conditions.

Dam Height

25

River Or Stream

UNNAMED STREAM/TRIB UMPQUA

Primary Dam Type

Earth

Surface Area

8

Drainage Area

0.56

Nid Storage

90

Outlet Gates

Slide (sluice gate)

Hazard Potential

Significant

Nid Height

25
       
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.