Dulles Corner Lake Dam dam
Dulles Corner Lake Dam
Dulles Corner Lake Dam in Fairfax, Virginia, is a privately owned structure regulated by the Department of Conservation and Recreation. Standing at a height of 20.4 feet with a length of 108.5 feet, this earth dam serves primarily for purposes other than irrigation or flood control. The dam has a storage capacity of 116 acre-feet and covers a surface area of 3.43 acres, with a drainage area of 1.33 square miles.
Despite its satisfactory condition assessment as of August 2017, the dam poses a significant hazard potential, emphasizing the importance of regular inspections and maintenance. Being located in a densely populated area, the dam's emergency action plan and risk management measures are crucial for ensuring public safety in the event of a dam failure. With its close proximity to the Baltimore District, Dulles Corner Lake Dam is a key feature for water resource and climate enthusiasts to monitor and study in the context of dam safety and environmental impact.
As a part of the water infrastructure in Virginia, Dulles Corner Lake Dam plays a vital role in water resource management and regulation. Its association with the Department of Conservation and Recreation underscores the importance of state oversight in ensuring the safety and functionality of such structures. For enthusiasts interested in the intersection of water resources and climate, understanding the design, maintenance, and emergency preparedness of dams like Dulles Corner Lake Dam is essential for fostering sustainable practices and mitigating potential risks associated with dam infrastructure.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Dulles Corner Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Broad Run Near Leesburg | 449 cfs | → |
| Goose Creek Near Leesburg | 449 cfs | → |
| Difficult Run Near Great Falls | 129 cfs | → |
| Seneca Creek At Dawsonville | 304 cfs | → |
| Long Branch Near Annandale | 4 cfs | → |
| Accotink Creek Near Annandale | 50 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Dulles Corner Lake Dam.
Boat launches
- Ashburn Village Boulevard 20585, Lansdowne
- Rileys Lock Road Darnestown
- Edwards Ferry Road Montgomery County
- Potomac Hills Street Fairfax County
- Smart's Mill Rd (Private) Leesburg
- Clarksburg Road Germantown
Campgrounds
- Lake Fairfax
- Horsepen Branch
- Horsepen Branch Campsite
- Chisel Branch Campsite
- Chisel Branch
- Bull Run Regional Park
Fishing spots
- Washington Aqueduct
- Gillam Branch (Historical)
- Dalecarlia Reservoir
- Davis Branch (Historical)
- Maddox Branch
- Georgetown Reservoir
Paddle runs
- Bixler Bridge On State Route 675 To Karo Landing, Approximately 6 Miles South Of Town Of Front Royal
- Headwaters Adjacent To Fdt 573 To State Route 622 Bridge
- State Route 675 At Edinburg, Va To State Highway 55 Southeast Of Strasburg, Va
- Segment C--Nf Boundary To Confluence With North Fork Shenandoah River
- Segment B--State Route 730 Bridge To Nf Boundary
Track Dulles Corner Lake Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Dulles Corner Lake Dam
Where does the data for Dulles Corner Lake Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Significant hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Dulles Corner Lake Dam.