Dober Reservoir
Dober Reservoir is an earth dam located in Washington County, Oregon, built in 1954. It carries a Significant hazard potential classification.
About Dober Reservoir
The primary purpose of Dober Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Treesap Llc, Dba: Hines Growers (private). It impounds the Davis Creek near Orenco.
The dam stands 24 feet tall and stretches 430 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1954, 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 11/05/2020.
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Location
| State | Oregon |
| County | Washington |
| Nearest City | Orenco |
| River/Stream | Davis Creek |
| Coordinates | 45.46109, -123.03076 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 23 ft |
| Dam Length | 430 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 106 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 106 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 70 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | TREESAP LLC, DBA: HINES GROWERS |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 11/05/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00262 |
| Federal ID | OR00262 |
| More Info | State Dam Safety Program |