Twin Lake-upper
Twin Lake-upper is a concrete dam located in Baker County, Oregon, built in 1908. It carries a Low hazard potential classification.
About Twin Lake-upper
The primary purpose of Twin Lake-upper is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Pine Lakes Ditch & Res. Company (private). It impounds the West Fork Pine Creek near Cornucopia.
The dam stands 15 feet tall and stretches 65 feet across, creates a reservoir covering 16 acres, has a maximum storage capacity of 150 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1908, the structure is over a century 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 08/13/2019.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Oregon |
| County | Baker |
| Nearest City | Cornucopia |
| River/Stream | West Fork Pine Creek |
| Coordinates | 45.03611, -117.25609 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 15 ft |
| Dam Height | 10 ft |
| Dam Length | 65 ft |
| Year Completed | 1908 (118 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 150 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 51 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | PINE LAKES DITCH & RES. COMPANY |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 08/13/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00609 |
| Federal ID | OR00609 |
| More Info | State Dam Safety Program |