Iott Dam Reservoir Report
Last Updated: December 13, 2025
Iott Dam, located in Polk County, Oregon, is a privately owned structure regulated by the Oregon Water Resources Department.
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Summary
The dam serves the primary purpose of water supply, with a storage capacity of 58.5 acre-feet. Standing at a height of 20 feet, Iott Dam has a low hazard potential and has not been rated for its condition. The last inspection of the dam was conducted in March 2014, with a frequency of every 6 years.
Situated on an unnamed tributary of Salt Creek, Iott Dam plays a crucial role in water resource management in the region. While the dam does not have a spillway or associated locks, it is equipped with outlet gates for controlled water release. Despite lacking detailed information on its construction year and specific dam type, Iott Dam remains a vital infrastructure for maintaining water supply reliability in the area.
With its strategic location and essential function, Iott Dam is a key component of the water infrastructure in Polk County, Oregon. As climate change continues to impact water resources, the proper regulation and maintenance of dams like Iott are essential for ensuring water security and resilience in the face of evolving environmental challenges.
Dam Height |
20 |
River Or Stream |
UNNAMED, TRIB/SALT CREEK |
Nid Storage |
58.5 |
Hazard Potential |
Low |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Willamette River At Salem
|
35800cfs |
South Yamhill River At Mcminnville
|
8310cfs |
Luckiamute River Near Suver
|
3790cfs |
Santiam River At Jefferson
|
13800cfs |
Tucca Creek Near Blaine
|
123cfs |
Zollner Creek Near Mt Angel
|
320cfs |
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.
Iott Dam