Woolfolk Reservoir is an earth dam located in Jackson County, Oregon, built in 1955. It carries a Significant hazard potential classification.
Dam profile
NID height · 49 ft49 ft tall and 1,180 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 Woolfolk Reservoir
The primary purpose of Woolfolk Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ira V. Woolfolk (private). It impounds the School House Creek near Brownsboro.
The dam stands 49 feet tall and stretches 1,180 feet across, creates a reservoir covering 34 acres, has a maximum storage capacity of 700 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1955, the structure is well into its service life at over 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. The most recent inspection on record was 12/30/2020.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Oregon |
| County | Jackson |
| Nearest City | Brownsboro |
| River/Stream | School House Creek |
| Coordinates | 42.47778, -122.69753 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 47 ft |
| Dam Length | 1,180 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 700 acre-ft |
| Max Storage | 700 acre-ft |
| Normal Storage | 480 acre-ft |
| Surface Area | 34 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,862 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Ira V. Woolfolk |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 12/30/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00295 |
| Federal ID | OR00295 |
| More Info | State Dam Safety Program |