Island Creek Dam
Island Creek Dam is an earth dam located in Fairfax County, Virginia. It carries a Significant hazard potential classification.
About Island Creek Dam
The primary purpose of Island Creek Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Island Creek Homeowners Association, Inc. (private). It impounds the Long Branch Tributary.
The dam stands 40 feet tall and stretches 720 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 0 square miles.
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.
At 40 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | Virginia |
| County | Fairfax |
| River/Stream | Long Branch Tributary |
| Coordinates | 38.75090, -77.17070 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 720 ft |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Island Creek Homeowners Association, Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Emergency Action Plan | No |
Identifiers
| NID ID | VA059112 |
| Federal ID | VA059112 |
| More Info | State Dam Safety Program |