Icon Materials Reservoir Report

Last Updated: December 13, 2025

Icon Materials, a private company located in Auburn, Washington, plays a crucial role in water resource management and climate resilience.


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Summary

The dam associated with Icon Materials serves multiple purposes, including tailings storage and water supply. Built in 1997 by GeoEngineers, the earth dam stands at a hydraulic height of 120 feet and a structural height of 100 feet, with a length of 3000 feet and a storage capacity of 200 acre-feet. The dam, situated on the White River offstream, is regulated by the Washington Dept of Ecology and undergoes regular inspections to ensure its safe operation.

Despite its fair condition assessment and high hazard potential, Icon Materials' dam continues to support water resource management in the region. Its normal storage capacity of 50 acre-feet and maximum discharge of 125 cfs make it a vital component of the local water infrastructure. With a surface area of 30 acres and a drainage area of 0.05 square miles, the dam plays a significant role in flood control and water supply management in King County, Washington. As a key player in the state's water resource infrastructure, Icon Materials exemplifies the importance of private sector involvement in climate resilience efforts.

In conclusion, Icon Materials' dam stands as a testament to the intersection of water resource management and climate adaptation. With its strategic location on the White River and its multi-purpose functionality, the dam serves as a critical asset for the community. As climate change continues to impact water availability and quality, private entities like Icon Materials play a vital role in ensuring sustainable water management practices and enhancing the resilience of our water infrastructure.

Year Completed

1997

Dam Length

3000

River Or Stream

White River - Offstream

Primary Dam Type

Earth

Surface Area

30

Hydraulic Height

120

Drainage Area

0.05

Nid Storage

200

Structural Height

100

Hazard Potential

High

Foundations

Soil

Nid Height

120
       
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.