Seneca Lake
Seneca Lake is an earth dam located in Pocahontas County, West Virginia, built in 1952. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Seneca Lake
The primary purpose of Seneca Lake is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Wvdnr, Parks (state). It impounds the Little Thorny Creek near Dilly's Mill.
The dam stands 23 feet tall and stretches 200 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 78 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1952, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 06/30/2024.
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Location
| State | West Virginia |
| County | Pocahontas |
| Nearest City | Dilly's Mill |
| River/Stream | Little Thorny Creek |
| Coordinates | 38.30611, -79.94389 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 200 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 78 acre-ft |
| Max Storage | 78 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,017 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | WVDNR, PARKS |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/30/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WV07505 |
| Federal ID | WV07505 |
| More Info | State Dam Safety Program |