Osburn Reservoir is an earth dam located in Multnomah County, Oregon, built in 1967. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 400 ft long, taller than 80% 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 Osburn Reservoir
The primary purpose of Osburn Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Tom Lehman (private). It impounds the Trout Creek, Trib to near Troutdale.
The dam stands 35 feet tall and stretches 400 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1967, 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 04/26/2018.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Oregon |
| County | Multnomah |
| Nearest City | Troutdale |
| River/Stream | Trout Creek, Trib to |
| Coordinates | 45.48374, -122.24377 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 34 ft |
| Dam Length | 400 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 44 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 115 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Tom Lehman |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/26/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00436 |
| Federal ID | OR00436 |
| More Info | State Dam Safety Program |