Duncan Reservoir - Dam is a gravity dam located in Lake County, Oregon, built in 1973. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 508 ft long, taller than 50% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Duncan Reservoir - Dam
The primary purpose of Duncan Reservoir - Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Doi BLM (federal). It impounds the Duncan Creek.
The dam stands 25 feet tall and stretches 508 feet across, creates a reservoir covering 284 acres, and has a maximum storage capacity of 284 acre-feet. Completed in 1973, 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 08/10/2017.
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Location
| State | Oregon |
| County | Lake |
| River/Stream | Duncan Creek |
| Coordinates | 43.07107, -120.94359 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 25 ft |
| Dam Length | 508 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 284 acre-ft |
| Max Storage | 284 acre-ft |
| Normal Storage | 284 acre-ft |
| Surface Area | 284 acres |
| Max Discharge | 3,017 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/10/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00567 |
| Federal ID | OR00567 |
| More Info | State Dam Safety Program |