Dierickx is an earth dam located in Washington County, Oregon, built in 1980. It carries a Significant hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 530 ft long. 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 Dierickx
The primary purpose of Dierickx is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Raymond Dierickx (private). It impounds the Dairy Creek, Trib to near Hillsboro.
The dam stands 21 feet tall and stretches 530 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1980, the structure is 46 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 09/25/2020.
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Location
| State | Oregon |
| County | Washington |
| Nearest City | Hillsboro |
| River/Stream | Dairy Creek, Trib to |
| Coordinates | 45.60343, -123.14205 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 20 ft |
| Dam Length | 530 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 437 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Raymond Dierickx |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 09/25/2020 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00656 |
| Federal ID | OR00656 |
| More Info | State Dam Safety Program |