Langdon Lake Dam
Langdon Lake Dam is an earth dam located in Umatilla County, Oregon, built in 1930. It carries a Low hazard potential classification.
About Langdon Lake Dam
The primary purpose of Langdon Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Langdon Lake Association, Pendleton 97801 (private). It impounds the Lookingglass near Troy.
The dam stands 14 feet tall and stretches 350 feet across, creates a reservoir covering 48 acres, has a maximum storage capacity of 253 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
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 09/12/2019.
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Location
| State | Oregon |
| County | Umatilla |
| Nearest City | Troy |
| River/Stream | Lookingglass |
| Coordinates | 45.77637, -118.08940 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 12 ft |
| Dam Length | 350 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 253 acre-ft |
| Max Storage | 253 acre-ft |
| Normal Storage | 253 acre-ft |
| Surface Area | 48 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 20 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | LANGDON LAKE ASSOCIATION, PENDLETON 97801 |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/12/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00522 |
| Federal ID | OR00522 |
| More Info | State Dam Safety Program |