Harrison
Harrison is an earth dam located in Jackson County, Oregon, built in 1968. It carries a Significant hazard potential classification.
About Harrison
The primary purpose of Harrison is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Cascade Ranches (private). It impounds the Lost Creek, Harrison Creek, And Ot near Lake Creek.
The dam stands 27 feet tall and stretches 760 feet across, creates a reservoir covering 14 acres, and has a maximum storage capacity of 500 acre-feet. Completed in 1968, 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 11/26/2019.
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Location
| State | Oregon |
| County | Jackson |
| Nearest City | Lake Creek |
| River/Stream | Lost Creek, Harrison Creek, And Ot |
| Coordinates | 42.37536, -122.65108 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 26 ft |
| Dam Length | 760 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 500 acre-ft |
| Max Storage | 500 acre-ft |
| Normal Storage | 234 acre-ft |
| Surface Area | 14 acres |
| Max Discharge | 2,489 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | CASCADE RANCHES |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 11/26/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00460 |
| Federal ID | OR00460 |
| More Info | State Dam Safety Program |