Langdon Lake Dam #1
Langdon Lake Dam #1 is an earth dam located in Johnston County, North Carolina, built in 1940. It carries a Low hazard potential classification and has a fair condition assessment.
About Langdon Lake Dam #1
The primary purpose of Langdon Lake Dam #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Alex C Langdon (private). It impounds the Mill Branch near Willow Springs.
The dam stands 24 feet tall and stretches 560 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 130 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1940, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 12/18/2017.
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Location
| State | North Carolina |
| County | Johnston |
| Nearest City | Willow Springs |
| River/Stream | Mill Branch |
| Coordinates | 35.56890, -78.57210 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Length | 560 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 130 acre-ft |
| Max Storage | 130 acre-ft |
| Normal Storage | 107 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 122 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Alex C Langdon |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 12/18/2017 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NC00958 |
| Federal ID | NC00958 |
| More Info | State Dam Safety Program |