Portland #3 (washington Park)
Portland #3 (washington Park) is a gravity dam located in Multnomah County, Oregon, built in 1894. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Portland #3 (washington Park)
The primary purpose of Portland #3 (washington Park) 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 City Of Portland #3 (local government). It impounds the Bull Run River (offstream) near Portland.
The dam stands 53 feet tall and stretches 100 feet across, creates a reservoir covering 3 acres, and has a maximum storage capacity of 50 acre-feet. Completed in 1894, the structure is over a century 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 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 08/06/2020.
At 53 feet, this dam is taller than 94% of dams nationwide.
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 | Multnomah |
| Nearest City | Portland |
| River/Stream | Bull Run River (offstream) |
| Coordinates | 45.51994, -122.70291 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 53 ft |
| Dam Height | 53 ft |
| Dam Length | 100 ft |
| Year Completed | 1894 (132 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 3 acres |
| Max Discharge | 300 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF PORTLAND #3 |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/06/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OR00668 |
| Federal ID | OR00668 |
| More Info | State Dam Safety Program |