D&A Dairy Consolidated Lagoon No. 1 Reservoir Report
Last Updated: December 13, 2025
D&A Dairy Consolidated Lagoon No.
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Summary
1 in Granger, Washington, is a private-owned facility regulated by the Washington Dept of Ecology and located in Yakima County. This Earth-type dam was completed in 2021 with a hydraulic height of 6 feet and a length of 890 feet, providing a storage capacity of 16 acre-feet. Despite not having a formal condition assessment, the lagoon is considered to have a significant hazard potential.
With its primary purpose being designated as "Other," the lagoon serves a unique function in the local water resource management system. While the dam does not have a designated spillway type or maximum discharge capacity listed, it undergoes inspections every 5 years to ensure its structural integrity and compliance with state regulations. The emergency action plan (EAP) for D&A Dairy Consolidated Lagoon No. 1 was last revised in April 2020, indicating a commitment to preparedness and risk management.
Located in Congressional District 04, Washington, this dairy lagoon presents an interesting case study for water resource and climate enthusiasts. As a relatively new structure, its design and operational aspects may offer valuable insights into sustainable water management practices and emergency response protocols. Further research and monitoring of D&A Dairy Consolidated Lagoon No. 1 could contribute to the broader conversation on dam safety and environmental stewardship in the region.
Year Completed |
2021 |
Dam Length |
890 |
Primary Dam Type |
Earth |
Hydraulic Height |
6 |
Nid Storage |
16 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
6 |
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 |
Yakima River At Kiona
|
20700cfs |
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.
D&A Dairy Consolidated Lagoon No. 1