Duncan Dam No 2
Duncan Dam No 2 is an earth dam located in Pend Oreille County, Washington, built in 1966. It carries a Low hazard potential classification.
About Duncan Dam No 2
The primary purpose of Duncan Dam No 2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Michaelhamblen (private). It impounds the Tr-pend Oreille River near Usk.
The dam stands 18 feet tall and stretches 325 feet across, creates a reservoir covering 95 acres, has a maximum storage capacity of 150 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1966, 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 05/25/2000. That was over 25 years ago.
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Location
| State | Washington |
| County | Pend Oreille |
| Nearest City | Usk |
| River/Stream | Tr-pend Oreille River |
| Coordinates | 48.23429, -117.11512 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Length | 325 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 95 acre-ft |
| Surface Area | 95 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 139 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | MichaelHamblen |
| Owner Type | Private |
| Hazard Classification | Low |
| Last Inspection | 05/25/2000 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00044 |
| Federal ID | WA00044 |
| More Info | State Dam Safety Program |