Thompson (benton)
Thompson (benton) is an earth dam located in Benton County, Oregon, built in 1956. It carries a Significant hazard potential classification.
About Thompson (benton)
The primary purpose of Thompson (benton) is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Eric Thompson (private). It impounds the Bark Creek near Wren.
The dam stands 44 feet tall and stretches 450 feet across, creates a reservoir covering 32 acres, has a maximum storage capacity of 450 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1956, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 10/22/2020.
At 44 feet, this dam is taller than 90% of dams nationwide.
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Location
| State | Oregon |
| County | Benton |
| Nearest City | Wren |
| River/Stream | Bark Creek |
| Coordinates | 44.55944, -123.58155 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 44 ft |
| Dam Height | 41 ft |
| Dam Length | 450 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 450 acre-ft |
| Max Storage | 450 acre-ft |
| Normal Storage | 362 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 505 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | ERIC THOMPSON |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 10/22/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00294 |
| Federal ID | OR00294 |
| More Info | State Dam Safety Program |