Rogers - Joseph Reservoir Reservoir Report
Last Updated: December 13, 2025
Rogers - Joseph Reservoir in Clackamas, Oregon, is a private water resource managed by the state agency OWRD for irrigation purposes.
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Summary
This Earth dam, completed in 1971, stands at a height of 31 feet and has a storage capacity of 40 acre-feet. Its location in Wilsonville makes it a vital resource for water management in the area, with a drainage area of 0.44 square miles and a surface area of 2.3 acres.
The reservoir's significant hazard potential underscores the importance of regular inspections, with the last one conducted in October 2020 and a frequency of every 3 years. While the condition assessment is currently not rated, the dam's structural integrity and emergency preparedness remain critical aspects to monitor. With a maximum discharge of 100 cfs and a hydraulic height of 28 feet, the reservoir plays a crucial role in maintaining water supply and managing potential risks in the region.
Overall, the Rogers - Joseph Reservoir serves as a key irrigation resource in Oregon, highlighting the intersection of water management and climate resilience. Its strategic location, storage capacity, and regulatory oversight by OWRD ensure efficient water distribution and emergency response capabilities. As enthusiasts of water resources and climate change, understanding and supporting the maintenance and monitoring of such reservoirs are essential for sustainable water management practices in the face of evolving environmental challenges.
Year Completed |
1971 |
Dam Length |
255 |
Dam Height |
31 |
River Or Stream |
UNNAMED |
Primary Dam Type |
Earth |
Surface Area |
2.3 |
Hydraulic Height |
28 |
Drainage Area |
0.44 |
Nid Storage |
40 |
Structural Height |
31 |
Hazard Potential |
Significant |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Willamette River At Newberg
|
64600cfs |
Pudding River At Aurora
|
6660cfs |
Pudding River Near Woodburn
|
5900cfs |
Molalla River Near Canby
|
4280cfs |
Tualatin River At West Linn
|
4340cfs |
Fanno Creek At Durham
|
49cfs |
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.
Rogers - Joseph Reservoir
Wilsonville Memorial Park