Cedar Lake Dam Reservoir Report
Last Updated: December 5, 2025
Cedar Lake Dam, also known as Marney Lake Dam, is a privately owned structure located in Usk, Washington.
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Summary
Built in 1967 by the USDA NRCS, this earth dam stands at a height of 19 feet with a structural height of 23 feet, serving primarily for irrigation purposes. With a storage capacity of 50 acre-feet and a normal storage of 21 acre-feet, Cedar Lake Dam is situated on TR-Deer Creek in Pend Oreille County. The dam has a hazard potential classified as high, but its condition assessment is rated as fair as of the last inspection in September 2015.
Managed by the Washington Department of Ecology, Cedar Lake Dam is subject to state regulation, inspection, and enforcement. While its primary purpose is irrigation, the dam also provides opportunities for recreational activities. With a drainage area of 0.32 square miles and a maximum discharge capacity of 355 cubic feet per second, Cedar Lake Dam plays a crucial role in water resource management in the region. Despite its age, the dam continues to be a vital infrastructure for the local community and surrounding areas, contributing to the sustainable use of water resources and climate resilience efforts.
In the event of emergencies, the dam's emergency action plan status and risk management measures remain unspecified in the available data. However, the structure's compliance with state guidelines and preparedness for potential inundation events are crucial aspects that need to be regularly reviewed and updated. As water resource and climate enthusiasts, understanding the significance of Cedar Lake Dam in sustaining irrigation and recreation activities, as well as the need for ongoing maintenance and risk mitigation strategies, is essential for ensuring the long-term safety and functionality of this vital infrastructure.
Year Completed |
1967 |
Dam Length |
280 |
Dam Height |
19 |
River Or Stream |
TR-DEER CREEK |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
19 |
Drainage Area |
0.32 |
Nid Storage |
50 |
Structural Height |
23 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pend Oreille River At Newport Wa
|
17000cfs |
Little Spokane River At Elk
|
48cfs |
Priest River Nr Priest River Id
|
955cfs |
Priest R Outflow Nr Coolin
|
764cfs |
Little Spokane River At Dartford
|
173cfs |
Little Spokane River Near Dartford
|
457cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Skookum Creek- State Forest
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Enchantment Camp
|
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County Fair Campground
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Lodge Creek Camp
|
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Albeni Cove Campground
|
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Albeni Cove - Oldtown
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Cedar Lake Dam
Pondoray Shores Road, Newport