Waterville Effluent Storage Pond Reservoir Report
Last Updated: December 15, 2025
The Waterville Effluent Storage Pond in Douglas, Washington is a vital resource managed by the local government for the storage of effluent.
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Summary
Completed in 1981, this earth dam structure has a hydraulic height of 30 feet and a structural height of 20 feet, with a storage capacity of 73 acre-feet. Situated near Tr-Corbaley Creek, it serves as a key component in the region's water resource management system, supporting the community's needs for wastewater treatment and disposal.
Despite its low hazard potential, the pond is regulated and inspected by the Washington Dept of Ecology to ensure compliance with state regulations. With a normal storage capacity of 53 acre-feet and a drainage area of 0.01 square miles, the pond plays a crucial role in maintaining water quality and environmental sustainability in the area. The surrounding community benefits from the pond's presence, as it helps mitigate potential risks associated with effluent discharge and provides a reliable storage solution for wastewater management.
As an essential infrastructure for water resource management, the Waterville Effluent Storage Pond exemplifies the importance of sustainable practices in safeguarding our environment. With its earth dam structure and rockfill core, the pond stands as a testament to responsible water management in the region. As climate change continues to impact water resources, structures like the Waterville Effluent Storage Pond play a crucial role in ensuring the resilience and sustainability of our water systems for future generations.
Year Completed |
1981 |
Dam Length |
800 |
River Or Stream |
Tr-Corbaley Creek |
Primary Dam Type |
Earth |
Surface Area |
53 |
Hydraulic Height |
30 |
Drainage Area |
0.01 |
Nid Storage |
73 |
Structural Height |
20 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Entiat River Near Entiat
|
1050cfs |
Chelan River At Chelan
|
756cfs |
Mad River At Ardenvoir
|
197cfs |
Wenatchee River At Monitor
|
12000cfs |
Entiat River Near Ardenvoir
|
948cfs |
Wenatchee River At Peshastin
|
11200cfs |
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.
Entiat City Park
Duffy / Douglas Creek
Daroga State Park
North Douglas Creek
Lincoln Rock State Park
Douglas Creek Dispersed - Yakima River Canyon Dispersed
Waterville Effluent Storage Pond
Lakeshore Drive Entiat