Graham
Graham is an earth dam located in Washington County, Oregon, built in 1961. It carries a Low hazard potential classification.
About Graham
The primary purpose of Graham is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by J.g. Stevens (private). It impounds the Dilley Creek near Forest Grove.
The dam stands 34 feet tall and stretches 550 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 220 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, 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 11/10/2016.
At 34 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Oregon |
| County | Washington |
| Nearest City | Forest Grove |
| River/Stream | Dilley Creek |
| Coordinates | 45.49162, -123.13600 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 32 ft |
| Dam Length | 550 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 220 acre-ft |
| Max Storage | 220 acre-ft |
| Normal Storage | 180 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 82 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | J.G. STEVENS |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 11/10/2016 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00440 |
| Federal ID | OR00440 |
| More Info | State Dam Safety Program |