City Of Mt. Angel Lagoon Reservoir Report
Nearby: Kraemer Farms Dam Woodburn Nursery
Last Updated: December 13, 2025
The City of Mt.
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Summary
Angel Lagoon, located in Marion County, Oregon, is a local government-owned earth dam designed to regulate water flow in the area. With a height of 11 feet and a storage capacity of 266.5 acre-feet, this lagoon plays a crucial role in managing water resources and protecting against potential flooding. The dam is regulated by the Oregon Water Resources Department and undergoes regular inspections to ensure its structural integrity and safety.
Despite its low hazard potential, the City of Mt. Angel Lagoon is an essential piece of infrastructure for the community, providing flood protection and water storage capacity. The dam has not been rated for its condition assessment, but it meets state regulatory standards and is subject to regular inspections every six years. The lagoon does not have a spillway or locks, indicating a straightforward design focused on water regulation and storage.
As a key component of water resource management in Marion County, the City of Mt. Angel Lagoon serves as a vital piece of infrastructure for the local community. Its location, design, and purpose emphasize the importance of effective water storage and regulation in mitigating potential flooding risks and ensuring water availability for residents in the area. The lagoon's state-regulated status and low hazard potential underscore its reliability and importance in maintaining a sustainable water supply for the region.
Dam Height |
11 |
Primary Dam Type |
Earth |
Nid Storage |
266.5 |
Hazard Potential |
Low |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Zollner Creek Near Mt Angel
|
320cfs |
Abiqua Creek At Silverton
|
74cfs |
Butte Creek At Monitor
|
453cfs |
Silver Creek At Silverton
|
52cfs |
Pudding River Near Woodburn
|
4380cfs |
Pudding River At Aurora
|
5980cfs |
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.
City Of Mt. Angel Lagoon