Gillworth Reservoir
Gillworth Reservoir is an earth dam located in Jefferson County, Oregon, built in 1980. It carries a Significant hazard potential classification.
About Gillworth Reservoir
The primary purpose of Gillworth Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Robert C & Vicki L Kronsberg (private). It impounds the Deschutes River, Trib To near No Downstream Settlement.
The dam stands 29 feet tall and stretches 600 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 178 acre-feet, and collects water from a drainage area of 9 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 10/10/2018.
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Location
| State | Oregon |
| County | Jefferson |
| Nearest City | No Downstream Settlement |
| River/Stream | Deschutes River, Trib To |
| Coordinates | 44.40044, -121.34281 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 600 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 178 acre-ft |
| Max Storage | 178 acre-ft |
| Normal Storage | 178 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 9 sq mi |
| Max Discharge | 345 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | ROBERT C & VICKI L KRONSBERG |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 10/10/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00719 |
| Federal ID | OR00719 |
| More Info | State Dam Safety Program |