Fair Lakes Dam #1, also known as Seven Fair Lakes Dam, is a privately owned structure located in Fairfax, Virginia.
Wind
Humidity
This earthen dam stands at a height of 25 feet and stretches 980 feet in length, serving the primary purpose of flood risk reduction along the Big Rocky Run tributary. With a storage capacity of 99.43 acre-feet and a surface area of 3.81 acres, this dam plays a crucial role in managing water resources in the area.
Managed by the Department of Conservation and Recreation in Virginia, Fair Lakes Dam #1 has a high hazard potential but is currently assessed to be in satisfactory condition. Regular inspections take place to ensure its operational integrity, with the last assessment conducted in February 2020. Despite its critical role in flood risk reduction, there is limited information on its construction date or any modifications over the years, highlighting the importance of continued monitoring and maintenance to safeguard against potential risks and ensure its efficacy in the face of changing climate dynamics.
With the dam's location in a densely populated area and its vital function in mitigating flood risks, Fair Lakes Dam #1 serves as a key infrastructure for water resource and climate enthusiasts to study and monitor. As climate change impacts become more pronounced, understanding and maintaining such structures will be crucial in safeguarding communities and ecosystems from the escalating threats of extreme weather events and water resource management challenges.
Dam Length |
980 |
Dam Height |
25 |
River Or Stream |
Big Rocky Run tributary |
Primary Dam Type |
Earth |
Surface Area |
3.81 |
Hydraulic Height |
25 |
Drainage Area |
0.78 |
Nid Storage |
99.43 |
Structural Height |
25 |
Hazard Potential |
High |
Nid Height |
25 |
Long Branch Near Annandale
|
0cfs |
Accotink Creek Near Annandale
|
2cfs |
Difficult Run Near Great Falls
|
12cfs |
Broad Run Near Leesburg
|
61cfs |
Potomac River Near Wash
|
2550cfs |
Cameron Run At Alexandria
|
15cfs |
| Location | Reservations | Toilets |
|---|---|---|
Bull Run Regional Park
|
||
Lake Fairfax
|
||
Burke Lake Park
|
||
Marsden Tract Group Campsite
|
||
Marsden Tract Campground
|