Roza Wasteway 6 Reregulation Reservoir Reservoir Report
Last Updated: December 15, 2025
Roza Wasteway 6 Reregulation Reservoir, located in Benton, Washington, is a key structure managed by the Washington Dept of Ecology for irrigation purposes.
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Summary
Completed in 1988, this offstream reservoir on Snipes Creek has a storage capacity of 150 acre-feet and serves as a critical component of the local water management system. With a low hazard potential and structural height of 18 feet, the reservoir plays a vital role in regulating water flow for agricultural activities in the region.
The reservoir boasts a surface area of 13 acres and a drainage area of 0.11 square miles, highlighting its significance in water resource management. With a maximum discharge capacity of 75 cubic feet per second, the Roza Wasteway 6 Reregulation Reservoir ensures efficient water distribution while mitigating the risk of flooding. While the condition assessment is currently not rated, the reservoir's strategic location and design underscore its importance in sustaining water availability for irrigation in the area.
As a public utility structure, the Roza Wasteway 6 Reregulation Reservoir stands as a testament to the collaborative efforts between state agencies and local stakeholders in ensuring sustainable water management practices. With its earth dam construction and rockfill core, this reservoir serves as a vital resource for the community, reflecting the commitment to efficient water use and conservation in the face of changing climate patterns.
Year Completed |
1988 |
Dam Length |
2150 |
River Or Stream |
Offstream - Snipes Creek |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
20 |
Drainage Area |
0.11 |
Nid Storage |
150 |
Structural Height |
18 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yakima River At Kiona
|
23800cfs |
Yakima River At Mabton
|
28900cfs |
Granger Drain At Granger
|
13cfs |
Columbia River Below Priest Rapids Dam
|
124000cfs |
Umatilla River Near Umatilla
|
516cfs |
Crab Creek Near Beverly
|
158cfs |
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.
Roza Wasteway 6 Reregulation Reservoir