Flatlick Branch above Frog Branch at Chantilly, VA
Is Flatlick Branch above Frog Branch at Chantilly, VA flooding right now?
Flatlick Branch above Frog Branch at Chantilly, VA measured 1.53 ft on 2026-09-22 21:00:00 UTC. That observation was 7.5 ft below its 9 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
1.53 ft
Streamflow
18 cfs
Minor flooding here begins at 9 ft, with major flooding at 15 ft. The highest crest on record was 9.21 ft on Thu, Sep 8, 2011.
Streamflow outlook
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 6 ft | 4.5 ft below |
| Minor flood | 9 ft | 7.5 ft below |
| Moderate flood | 10 ft | 8.5 ft below |
| Major flood | 15 ft | 13.5 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 9.21 ft | 2011-09-08 |
| 8.06 ft | 2013-07-12 |
| 7.07 ft | 2015-07-08 |
| 6.99 ft | 2008-05-11 |
| 6.99 ft | 2014-05-01 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Difficult Run above Fox Lake near Fairfax, VA | 5.3 mi | Fairfax County |
| S F Little Difficult Run above Mouth near Vienna, VA | 5.4 mi | Fairfax County |
| Snakeden Branch above Lake Audubon at Reston, VA | 5.9 mi | Fairfax County |
| The Glade near Howland Drive at Reston, VA | 6.3 mi | Fairfax County |
| Accotink Creek near Ranger Road at Fairfax, VA | 7.9 mi | Fairfax City |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.