Difficult Run above Fox Lake near Fairfax, VA
River level and flood forecast · Fairfax County
The National Weather Service has no current reading for this gauge, so its flood status isn't known right now.
Flow: 2 cubic feet per second (USGS).
Normal for November 5.
Usual for November 5: 1 to 4 cubic feet per second (the middle half of 19 years).
River camera
Watch the time-lapse
Camera by the U.S. Geological Survey. Most take a picture every hour, some every few minutes; many stop at night.
Flow against normal, the last 60 days
Each day's average flow from USGS. The shaded band is the middle half of past years on the same date (19 years); the dashed line is their median.
Get flood alerts for this river
An email when the National Weather Service forecasts Difficult Run above Fox Lake near Fairfax to flood, when it floods, and when it's over.
Flood stages
| Near flood stage | 5 ft |
| Record crest (August 1, 2018) | 8.42 ft |
Highest crests on record
- 8.42 ft — August 1, 2018
- 8.19 ft — September 6, 2008
- 8.14 ft — September 8, 2011
- 7.61 ft — May 16, 2014
- 7.17 ft — May 15, 2009
Recent crests: 8.42 ft (August 1, 2018) · 7.61 ft (May 16, 2014) · 8.14 ft (September 8, 2011) · 7.17 ft (May 15, 2009) · 8.19 ft (September 6, 2008)
Highest flow on record
4,390 cubic feet per second — August 1, 2018. From the USGS's yearly peaks since 2008.
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (FFDV2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.