Lake Isaac Dam
Lake Isaac Dam is an earth dam located in Frederick County, Virginia. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lake Isaac Dam
The primary purpose of Lake Isaac Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Isaac Estates Poa (private). It impounds the Isaacs Creek.
The dam stands 39 feet tall and stretches 393 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 424 acre-feet, and collects water from a drainage area of 2 square miles.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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 07/01/2020.
At 39 feet, this dam is taller than 86% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Virginia dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Virginia |
| County | Frederick |
| River/Stream | Isaacs Creek |
| Coordinates | 39.27310, -78.38300 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 39 ft |
| Dam Height | 39 ft |
| Dam Length | 393 ft |
Storage & Hydraulics
| NID Storage | 424 acre-ft |
| Max Storage | 424 acre-ft |
| Normal Storage | 213 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Isaac Estates POA |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/01/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | VA069021 |
| Federal ID | VA069021 |
| More Info | State Dam Safety Program |