Carty Reservoir is an earth dam located in Morrow County, Oregon, built in 1976. It carries a Significant hazard potential classification.
Dam profile
NID height · 82 ft82 ft tall and 6,800 ft long, taller than 97% 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 Carty Reservoir
The primary purpose of Carty Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Steve Anderson, C/o Pge Boardman (public utility). It impounds the Columbia River (cooling) near Arlington.
The dam stands 82 feet tall and stretches 6,800 feet across, creates a reservoir covering 1,450 acres, has a maximum storage capacity of 150,000 acre-feet, and collects water from a drainage area of 65 square miles. Completed in 1976, the structure is 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. An emergency action plan is in place for this dam. The most recent inspection on record was 03/22/2018.
At 82 feet, this dam is taller than 97% of all dams in the United States.
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Location
| State | Oregon |
| County | Morrow |
| Nearest City | Arlington |
| River/Stream | Columbia River (cooling) |
| Coordinates | 45.69336, -119.82057 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 82 ft |
| Dam Height | 80 ft |
| Dam Length | 6,800 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 150,000 acre-ft |
| Max Storage | 150,000 acre-ft |
| Normal Storage | 129,000 acre-ft |
| Surface Area | 1,450 acres |
| Drainage Area | 65 sq mi |
| Max Discharge | 22,000 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Steve Anderson, C/o Pge Boardman |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 03/22/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OR00619 |
| Federal ID | OR00619 |
| More Info | State Dam Safety Program |