Pearson Reservoir
Pearson Reservoir is an earth dam located in Washington County, Oregon, built in 1971. It carries a Low hazard potential classification.
About Pearson Reservoir
The primary purpose of Pearson Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Don Pearson (private). It impounds the Christensen Creek, Trib To near Scholls.
The dam stands 64 feet tall and stretches 410 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1971, 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 10/22/2019.
At 64 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | Oregon |
| County | Washington |
| Nearest City | Scholls |
| River/Stream | Christensen Creek, Trib To |
| Coordinates | 45.43501, -123.02793 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 64 ft |
| Dam Height | 64 ft |
| Dam Length | 410 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 125 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DON PEARSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 10/22/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00430 |
| Federal ID | OR00430 |
| More Info | State Dam Safety Program |