Cow Creek Iwr Auxiliary Dam
Cow Creek Iwr Auxiliary Dam is an earth dam located in Douglas County, Oregon, built in 2007. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Cow Creek Iwr Auxiliary Dam
The primary purpose of Cow Creek Iwr Auxiliary Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Bia (federal). It impounds the Jordan Creek -tr near Canyonville.
The dam stands 98 feet tall and stretches 500 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 195 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2007, the structure is relatively new.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 04/13/2023.
At 98 feet, this dam is taller than 98% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Oregon dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Oregon |
| County | Douglas |
| Nearest City | Canyonville |
| River/Stream | Jordan Creek -tr |
| Coordinates | 42.93280, -123.30820 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 98 ft |
| Dam Height | 70 ft |
| Dam Length | 500 ft |
| Year Completed | 2007 (19 years old) |
Storage & Hydraulics
| NID Storage | 195 acre-ft |
| Max Storage | 195 acre-ft |
| Normal Storage | 167 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | BIA |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/13/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OR03903 |
| Federal ID | OR03903S001 |
| More Info | State Dam Safety Program |