Lamb Weston Richland Lrad Lagoon Reservoir Report
Last Updated: December 14, 2025
Lamb Weston Richland Lrad Lagoon is a private water storage facility located in Richland, Washington, that was completed in 2017.
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Summary
This lagoon serves as a crucial water resource for the area, with a maximum storage capacity of 96 acre-feet and a normal storage level of 89.1 acre-feet. The dam's primary purpose is classified as "Other," and it is primarily an earth dam constructed with a soil foundation.
Managed by the Washington Department of Ecology, Lamb Weston Richland Lrad Lagoon is subject to state regulation, inspection, and enforcement to ensure its structural integrity and compliance with safety standards. The dam has a hydraulic height of 21 feet and is considered to have a significant hazard potential, although its condition assessment in 2017 was deemed satisfactory. The facility's emergency action plan was last revised in July 2016, and regular inspections are conducted to monitor its safety and readiness for potential emergencies.
With a drainage area of 0.01 square miles and a maximum discharge capacity of 6.3 cubic feet per second, Lamb Weston Richland Lrad Lagoon plays a vital role in water management and conservation efforts in Benton County, Washington. As a key component of the region's water infrastructure, this lagoon serves as a critical resource for maintaining water supply reliability and mitigating flood risks, highlighting its importance in the context of water resource and climate management.
Year Completed |
2017 |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Drainage Area |
0.01 |
Nid Storage |
96 |
Structural Height |
21 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yakima River At Kiona
|
23800cfs |
Umatilla River Near Umatilla
|
516cfs |
Yakima River At Mabton
|
28900cfs |
Walla Walla River Near Touchet
|
1040cfs |
Columbia River Below Priest Rapids Dam
|
124000cfs |
Granger Drain At Granger
|
13cfs |
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.
Lamb Weston Richland Lrad Lagoon
Snyder Boat Launch