Three Creeks Natural Area Reservoir Report

Last Updated: December 13, 2025

Three Creeks Natural Area in Clackamas, Oregon is a privately owned property that is regulated by the Oregon Water Resources Department.


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Summary

This natural area features an earth dam with a height of 14 feet, providing storage for 57 acre-feet of water. The dam also has a spillway width of 330 feet, ensuring the safe release of excess water during high flow events.

Although the condition of the dam is not rated and there is no recent inspection data available, the hazard potential is considered significant. The emergency action plan status for Three Creeks Natural Area is not specified, indicating a potential need for further preparedness measures. Despite the lack of detailed risk assessment information, this natural area remains an important resource for water management and climate enthusiasts in the region.

While the specifics of the dam's operation and maintenance are not provided, the unique natural surroundings of Three Creeks Natural Area offer a valuable opportunity for outdoor recreation and environmental education. With its picturesque location and potential for water storage and management, this site serves as a reminder of the delicate balance between human development and the preservation of natural resources in the face of a changing climate.

Dam Height

14

Primary Dam Type

Earth

Nid Storage

57

Hazard Potential

Significant

Nid Height

14
       
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.
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Area Campgrounds