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Dead Run near McLean

Highest listed crest 10.54 ftFlood stage 9.0 ft5 crests since 2010

The Dead Run near McLean crested above flood stage 1 time among the 5 crests the National Weather Service lists from 2010 to 2022. The highest, 10.54 ft on December 25, 2022, was moderate flooding, 1.54 feet above flood stage.

The gauge

Highest listed crest
10.54 ft
December 25, 2022; 3,775 cubic feet per second
Flood stage
9.0 ft
Major flooding from 11.0 ft
Crests at major
0
1 above flood stage
Most recent flood crest
December 25, 2022
10.54 ft, moderate flooding
Location
Fairfax County
Near Falls Church (5.2 mi), Vienna (6.1 mi), Rockville (8.6 mi)

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Dead Run near McLean
Action stage8.01Jul 8, 2019The level at which the NWS or its partners begin to take action
Flood stage (minor)9.00—Minimal or no property damage, but possibly some public threat
Moderate flood stage10.01Dec 25, 2022Some inundation of structures and roads near the stream
Major flood stage11.00—Extensive inundation of structures and roads

Every listed crest

5 crests from 2010 to 2022. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Dead Run near McLean, 2010 to 2022 67891011ft Flood stage 9.0 ftMajor 11.0 ft Aug 18, 2010: 7.42 ft, below flood stage; 1,630 cubic feet per secondSep 8, 2011: 6.85 ft, below flood stage; 1,170 cubic feet per secondJul 8, 2019: 8.18 ft, action stage; 4,410 cubic feet per secondSep 1, 2021: 7.20 ft, below flood stage; 1,650 cubic feet per secondDec 25, 2022: 10.54 ft, moderate flooding; 3,775 cubic feet per second Highest, 10.54 ft, Dec 25, 2022 201020152020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Dead Run near McLean 2010s: 0 2020s: 1 1 2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Dead Run near McLean
1Dec 25, 202210.54+1.54Moderate3,775
2Jul 8, 20198.18−0.82Action4,410
3Aug 18, 20107.42−1.58Below flood stage1,630
4Sep 1, 20217.20−1.80Below flood stage1,650
5Sep 8, 20116.85−2.15Below flood stage1,170

Gauges on the Dead Run

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Dead Run
CatonsvilleMD9.011.29 ft, Jul 30, 20160
WoodlawnMD9.012.16 ft, Jul 30, 20160
FranklintownMD10.012.50 ft, Jun 22, 19720
McLean this gaugeVA9.010.54 ft, Dec 25, 20220

Other gauges in Fairfax County

Flood gauges in Fairfax County
Woodburn Road / Strathmeade Springs251.5258.68 ft, Jul 13, 20250
Annandale9.516.32 ft, Sep 8, 20113
Manassas Park12.020.20 ft, Jul 22, 20180
Huntington - Metro Bridge11.012.92 ft, Sep 9, 20110
Browns Mill Road / Wolf Trap195.0196.37 ft, Jul 13, 20250
Great Falls11.021.40 ft, Jun 22, 19721
Chantilly9.09.21 ft, Sep 8, 20110
Fairview Lake318.0318.47 ft, Sep 8, 20110
New Alexandria Storm Water Pumping Station - Downstream5.57.51 ft, Jul 8, 20191
New Alexandria Tide Gate5.56.19 ft, Oct 29, 20210

Fairfax County: every hazard · River floods across the country · Virginia

NOAA National Water Prediction Service, gauge MDRV2, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.