Morgan Brothers Dam Reservoir Report
Nearby: Moffitti Marsh Dam Parvipes Marsh Dam
Last Updated: December 13, 2025
Morgan Brothers Dam, located in Polk County, Oregon, is a federal-owned structure managed by the Fish and Wildlife Service.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1962, this earth dam stands at 25 feet high with a hydraulic height of 23 feet and a structural height of 35 feet. The primary purpose of the dam is to serve as a fish and wildlife pond, with a storage capacity of 720 acre-feet and a surface area of 60 acres.
The dam, designed by the Soil Conservation Service and constructed by the Natural Resources Conservation Service, has undergone several modifications over the years to enhance its hydraulic and structural integrity. Despite being classified as having a low hazard potential, the dam's condition assessment in 2017 reported poor conditions. It is essential for water resource and climate enthusiasts to monitor the maintenance and inspection of Morgan Brothers Dam to ensure its continued safety and functionality for the surrounding ecosystem.
With its association with the Baskett Slough river and its critical role in providing habitat for fish and wildlife, Morgan Brothers Dam serves as a vital component of the regional water management infrastructure in Oregon. Climate change and increasing water demands emphasize the importance of maintaining and upgrading such structures to ensure sustainable water resource management in the face of evolving environmental challenges.
Years Modified |
1967 - Hydraulic, 1967 - Other, 1985 - Hydraulic, 1985 - Structural, 2002 - Foundation |
Year Completed |
1962 |
Dam Length |
500 |
Dam Height |
25 |
River Or Stream |
BASKETT SLOUGH |
Primary Dam Type |
Earth |
Surface Area |
60 |
Hydraulic Height |
23 |
Drainage Area |
0.7 |
Nid Storage |
720 |
Structural Height |
35 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Willamette River At Salem
|
35800cfs |
Luckiamute River Near Suver
|
3790cfs |
South Yamhill River At Mcminnville
|
8310cfs |
Santiam River At Jefferson
|
13800cfs |
Zollner Creek Near Mt Angel
|
320cfs |
Silver Creek At Silverton
|
52cfs |
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.
Morgan Brothers Dam
Riverview Park