Dickson Reservoir is an earth dam located in Malheur County, Oregon, built in 1949. It carries a Low hazard potential classification.
Dam profile
NID height · 48 ft48 ft tall and 270 ft long, taller than 92% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Dickson Reservoir
The primary purpose of Dickson Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Gordan R. Dickson (private). It impounds the High Horn Creek near Ironside.
The dam stands 48 feet tall and stretches 270 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 145 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1949, the structure is well-established, with more than 75 years of service.
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 10/31/2018.
At 48 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Oregon |
| County | Malheur |
| Nearest City | Ironside |
| River/Stream | High Horn Creek |
| Coordinates | 44.27252, -118.00251 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 48 ft |
| Dam Height | 45 ft |
| Dam Length | 270 ft |
| Year Completed | 1949 (77 years old) |
Storage & Hydraulics
| NID Storage | 145 acre-ft |
| Max Storage | 145 acre-ft |
| Normal Storage | 85 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 254 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Gordan R. Dickson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/31/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00178 |
| Federal ID | OR00178 |
| More Info | State Dam Safety Program |