Cooper Creek (sutherlin)
Cooper Creek (sutherlin) is an earth dam located in Douglas County, Oregon, built in 1971. It carries a High hazard potential classification and has a fair condition assessment.
About Cooper Creek (sutherlin)
The primary purpose of Cooper Creek (sutherlin) is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Sutherlin Water Control District (local government). It impounds the Cooper Creek near Sutherlin.
The dam stands 88 feet tall and stretches 1,443 feet across, creates a reservoir covering 140 acres, has a maximum storage capacity of 5,200 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1971, the structure is well into its service life at over 50 years old.
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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 10/14/2020.
At 88 feet, this dam is taller than 97% 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 | Sutherlin |
| River/Stream | Cooper Creek |
| Coordinates | 43.37998, -123.28210 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 88 ft |
| Dam Height | 84 ft |
| Dam Length | 1,443 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 5,200 acre-ft |
| Max Storage | 5,200 acre-ft |
| Normal Storage | 3,900 acre-ft |
| Surface Area | 140 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 1,100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | SUTHERLIN WATER CONTROL DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 10/14/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OR00463 |
| Federal ID | OR00463 |
| More Info | State Dam Safety Program |