Anderson-lower (malheur) is an earth dam located in Malheur County, Oregon, built in 1917. It carries a Low hazard potential classification.
Dam profile
NID height · 34 ft34 ft tall and 203 ft long, taller than 78% 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 Anderson-lower (malheur)
The primary purpose of Anderson-lower (malheur) is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Richard Eiguren (private). It impounds the Crooked Creek near Nyssa.
The dam stands 34 feet tall and stretches 203 feet across, creates a reservoir covering 336 acres, has a maximum storage capacity of 2,990 acre-feet, and collects water from a drainage area of 78 square miles. Completed in 1917, the structure is over a century 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 03/10/2020.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Oregon |
| County | Malheur |
| Nearest City | Nyssa |
| River/Stream | Crooked Creek |
| Coordinates | 42.70613, -117.81661 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 203 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 2,990 acre-ft |
| Max Storage | 2,990 acre-ft |
| Normal Storage | 2,990 acre-ft |
| Surface Area | 336 acres |
| Drainage Area | 78 sq mi |
| Max Discharge | 343 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Richard Eiguren |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/10/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00053 |
| Federal ID | OR00053 |
| More Info | State Dam Safety Program |