Tribbett Reservoir is an earth dam located in Marion County, Oregon, built in 1969. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 260 ft long, taller than 59% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Tribbett Reservoir
The primary purpose of Tribbett Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Kelly Farms (private). It impounds the Willamette River, Trib to near Newberg.
The dam stands 27 feet tall and stretches 260 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 31 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1969, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 09/09/2015. That was over 11 years ago.
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Location
| State | Oregon |
| County | Marion |
| Nearest City | Newberg |
| River/Stream | Willamette River, Trib to |
| Coordinates | 45.24385, -122.97318 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 260 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 31 acre-ft |
| Max Storage | 31 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 35 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Kelly Farms |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/09/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00687 |
| Federal ID | OR00687 |
| More Info | State Dam Safety Program |