Flying Goose Ranch Wetland Dam No 1 Reservoir Report

Last Updated: December 5, 2025

Flying Goose Ranch Wetland Dam No 1, located in Pend Oreille, Washington, is a vital water resource structure with a primary purpose of supporting Fish and Wildlife Pond activities.


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Summary

Constructed in 1995, this Earth-type dam stands at a hydraulic height of 10 feet, providing a storage capacity of 100 acre-feet and a surface area of 60 acres. Its low hazard potential and condition assessment of "Not Rated" reflect its stable and well-maintained status.

Managed by the Washington Department of Ecology, this dam plays a crucial role in regulating water flow in the Tr - Pend Oreille River, with a maximum discharge capacity of 140 cubic feet per second. With a drainage area of 4.4 square miles, the dam contributes to the conservation of the local ecosystem and wildlife habitats. The dam's location within Congressional District 05, Washington, underlines its importance in the region's water resource management and climate resilience efforts.

As a publicly owned utility structure, Flying Goose Ranch Wetland Dam No 1 is subject to regular inspections, permitting, and enforcement by state agencies to ensure its safe operation and compliance with regulatory standards. Although its emergency action plan status and risk assessment details are currently unspecified, the dam's critical role in supporting wildlife, water storage, and flood control activities underscores its significance for water resource and climate enthusiasts.

Year Completed

1995

Dam Length

358

River Or Stream

Tr - Pend Oreille River

Primary Dam Type

Earth

Surface Area

60

Hydraulic Height

10

Drainage Area

4.4

Nid Storage

100

Structural Height

10

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

10
       
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.