Flatlick Branch at Chantilly
Flood levels
Official flood levels at this gauge: action stage begins at 6.0 ft; minor flooding begins at 9.0 ft; moderate flooding begins at 10.0 ft; major flooding begins at 15.0 ft.
| Action stage | 6.0 ft |
|---|---|
| Minor flooding | 9.0 ft |
| Moderate flooding | 10.0 ft |
| Major flooding | 15.0 ft |
Highest recorded crests
- 9.2 ft on Sep 8, 2011 (historic crest)
- 8.1 ft on Jul 12, 2013 (historic crest)
- 7.1 ft on Jul 8, 2015 (historic crest)
- 7.0 ft on May 11, 2008 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 6.0 ft | The banks begin to overflow into nearby floodplain, but there is no impact to life or property. |
|---|---|
| 9.0 ft | Parking lots on the right bank begin to flood. |
| 10.0 ft | Buildings on the right bank begin to flood. |
| 15.0 ft | A few homes begin to flood along the stream between Route 50 and the mouth of the stream. |
Forecast office: NWS Sterling · River Forecast Center: Middle Atlantic River Forecast Center.
Flatlick Branch at Chantilly in your pocket
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