Case Creek Dam 1 Reservoir Report
Last Updated: December 13, 2025
Case Creek Dam 1, located in Butteville, Oregon, is a private earth dam completed in 1971 primarily for irrigation purposes.
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Summary
With a height of 23 feet and a structural height of 25 feet, this dam plays a crucial role in water management and resource allocation in the region. The reservoir created by the dam has a storage capacity of 352 acre-feet, providing water for irrigation over a drainage area of 4.7 square miles.
The dam has a low hazard potential and has not been rated for condition assessment. It is inspected every 6 years, with the last inspection conducted in August 2020. The outlet gates consist of slide (sluice gate) mechanisms, and the dam is regulated, permitted, and inspected by the Oregon Water Resources Department. Despite its modest size, Case Creek Dam 1 serves as an essential component of the local water infrastructure, contributing to the sustainable use of water resources for agricultural purposes in Marion County, Oregon.
For water resource and climate enthusiasts, Case Creek Dam 1 represents a fascinating example of how private infrastructure contributes to water management in agricultural regions. As a key feature in the irrigation system along Case Creek, this dam underscores the importance of sustainable water practices in maintaining a reliable water supply for farming activities. With its unassuming yet vital role in the local ecosystem, Case Creek Dam 1 exemplifies the intersection of human intervention and natural resource management in the face of changing climate patterns and water resource challenges.
Year Completed |
1971 |
Dam Length |
270 |
Dam Height |
23 |
River Or Stream |
CASE CREEK |
Primary Dam Type |
Earth |
Surface Area |
26.3 |
Hydraulic Height |
21 |
Drainage Area |
4.7 |
Nid Storage |
352 |
Structural Height |
25 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Pudding River Near Woodburn
|
4380cfs |
Willamette River At Newberg
|
52600cfs |
Pudding River At Aurora
|
5980cfs |
Zollner Creek Near Mt Angel
|
320cfs |
Butte Creek At Monitor
|
453cfs |
Molalla River Near Canby
|
3060cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Blue Heron
|
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Otter
|
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Beaver Island Group Camp
|
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Hiker/Biker Camp
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Case Creek Dam 1
San Salvador Access