Liberty Acres Lagoon 14 Reservoir Report
Last Updated: December 13, 2025
Liberty Acres Lagoon 14, also known as Liberty Acres Dam No.
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Summary
2, is a privately owned earth dam located in Granger, Washington. Built in 1990, this dam serves multiple purposes and has a storage capacity of 13 acre-feet. With a hydraulic height of 7 feet, the dam covers a surface area of 2.4 acres and drains a small watershed of 0.02 square miles.
Managed by the Washington Department of Ecology, Liberty Acres Lagoon 14 is deemed to have a significant hazard potential and is in fair condition as of the last inspection in 2015. Despite its small size, the dam plays a crucial role in water resource management in the Yakima County area. Its location in the Congressional District 04 of Washington underlines its importance in the regional climate and water infrastructure.
With state regulation, inspection, and enforcement in place, Liberty Acres Lagoon 14 is a key component of the water resource system in the region. Its modest size belies its impact on the local environment and underscores the need for ongoing monitoring and maintenance to ensure its continued effectiveness in managing water flow and storage in the area.
Year Completed |
1990 |
Primary Dam Type |
Earth |
Surface Area |
2.4 |
Hydraulic Height |
7 |
Drainage Area |
0.02 |
Nid Storage |
13 |
Structural Height |
7 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
7 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Granger Drain At Granger
|
13cfs |
Yakima River At Mabton
|
26200cfs |
Yakima River Above Ahtanum Creek At Union Gap
|
29600cfs |
Ahtanum Creek At Union Gap
|
542cfs |
Columbia River Below Priest Rapids Dam
|
103000cfs |
Toppenish Creek Near Fort Simcoe
|
73cfs |
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.
Liberty Acres Lagoon 14