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Four Mile Run at Alexandria

Highest listed crest 20.20 ftFlood stage 12.0 ft49 crests since 1972

The Four Mile Run at Alexandria crested at major flood stage 1 time among the 49 crests the National Weather Service lists from 1972 to 2021. The highest, 20.20 ft on June 25, 2006, was major flooding, 8.20 feet above flood stage.

The gauge

Highest listed crest
20.20 ft
June 25, 2006; 18,100 cubic feet per second
Flood stage
12.0 ft
Major flooding from 18.0 ft
Crests at major
1
90th of 242 gauges in Virginia
Most recent flood crest
July 7, 2020
12.91 ft, minor flooding
Location
Arlington County
Near Alexandria (1.7 mi), Falls Church (5.6 mi), Washington (5.6 mi)

Flood stages

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

Flood categories, Four Mile Run at Alexandria
Action stage6.042Aug 15, 2021The level at which the NWS or its partners begin to take action
Flood stage (minor)12.04Jul 7, 2020Minimal or no property damage, but possibly some public threat
Moderate flood stage15.01Jul 8, 2019Some inundation of structures and roads near the stream
Major flood stage18.01Jun 25, 2006Extensive inundation of structures and roads

Every listed crest

49 crests from 1972 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Four Mile Run at Alexandria, 1972 to 2021 510152025ft Flood stage 12.0 ftMajor 18.0 ft Jun 21, 1972: 12.40 ft, minor flooding; 10,000 cubic feet per secondAug 30, 1974: 8.55 ft, action stage; 2,930 cubic feet per secondSep 26, 1975: 13.07 ft, minor flooding; 6,350 cubic feet per secondSep 5, 1979: 8.36 ft, action stage; 3,080 cubic feet per secondOct 1, 1979: 7.49 ft, action stage; 2,470 cubic feet per secondJul 4, 1981: 7.96 ft, action stage; 2,800 cubic feet per secondJun 1, 1982: 8.20 ft, action stage; 2,960 cubic feet per secondJun 21, 1983: 7.92 ft, action stage; 2,770 cubic feet per secondMar 29, 1984: 7.90 ft, action stage; 2,400 cubic feet per secondSep 10, 1985: 10.36 ft, action stage; 4,480 cubic feet per secondJul 20, 1986: 8.15 ft, action stage; 2,930 cubic feet per secondJun 26, 1987: 10.12 ft, action stage; 4,310 cubic feet per secondMay 6, 1988: 7.87 ft, action stage; 2,740 cubic feet per secondMay 5, 1989: 8.25 ft, action stage; 3,100 cubic feet per secondMay 9, 1990: 8.38 ft, action stage; 3,090 cubic feet per secondOct 23, 1990: 9.66 ft, action stage; 3,990 cubic feet per secondJul 24, 1992: 8.90 ft, action stage; 3,460 cubic feet per secondNov 23, 1992: 8.10 ft, action stage; 2,480 cubic feet per secondNov 28, 1993: 10.23 ft, action stage; 4,310 cubic feet per secondMar 8, 1995: 7.28 ft, action stage; 1,610 cubic feet per secondJan 19, 1996: 7.18 ft, action stage; 1,500 cubic feet per secondSep 22, 1998: 7.94 ft, action stage; 2,310 cubic feet per secondJun 14, 1999: 8.58 ft, action stage; 3,160 cubic feet per secondJun 22, 2000: 9.79 ft, action stage; 4,300 cubic feet per secondMay 22, 2001: 9.01 ft, action stage; 3,590 cubic feet per secondApr 19, 2002: 7.48 ft, action stage; 2,080 cubic feet per secondSep 23, 2003: 11.83 ft, action stage; 6,040 cubic feet per secondSep 28, 2004: 9.29 ft, action stage; 3,840 cubic feet per secondJun 29, 2005: 9.28 ft, action stage; 3,490 cubic feet per secondJun 25, 2006: 20.20 ft, major flooding; 18,100 cubic feet per secondJun 13, 2007: 8.56 ft, action stage; 2,890 cubic feet per secondSep 6, 2008: 11.19 ft, action stage; 5,090 cubic feet per secondMay 29, 2009: 9.03 ft, action stage; 3,280 cubic feet per secondJun 28, 2010: 8.01 ft, action stage; 2,440 cubic feet per secondMar 6, 2011: 6.84 ft, action stage; 1,479 cubic feet per secondMar 10, 2011: 6.85 ft, action stageApr 17, 2011: 5.76 ft, below flood stageAug 28, 2011: 6.73 ft, action stageSep 8, 2011: 11.29 ft, action stageJun 10, 2013: 11.26 ft, action stage; 5,150 cubic feet per secondMay 16, 2014: 10.37 ft, action stage; 4,400 cubic feet per secondFeb 24, 2016: 10.90 ft, action stage; 4,850 cubic feet per secondJul 28, 2017: 11.22 ft, action stage; 5,110 cubic feet per secondAug 31, 2018: 12.53 ft, minor flooding; 6,220 cubic feet per secondJul 8, 2019: 15.30 ft, moderate flooding; 8,700 cubic feet per secondJul 7, 2020: 12.91 ft, minor flooding; 6,540 cubic feet per secondJun 15, 2021: 10.74 ft, action stage; 4,710 cubic feet per secondJul 9, 2021: 10.05 ft, action stage; 4,130 cubic feet per secondAug 15, 2021: 11.54 ft, action stage; 5,380 cubic feet per second Highest, 20.20 ft, Jun 25, 2006 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Four Mile Run at Alexandria 1970s: 2 2 1980s: 0 1990s: 0 2000s: 1 2010s: 2 2020s: 1 1970s1980s1990s2000s2010s2020s
  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, Four Mile Run at Alexandria
1Jun 25, 200620.20+8.20Major18,100
2Jul 8, 201915.30+3.30Moderate8,700
3Sep 26, 197513.07+1.07Minor6,350
4Jul 7, 202012.91+0.91Minor6,540
5Aug 31, 201812.53+0.53Minor6,220
6Jun 21, 197212.40+0.40Minor10,000
7Sep 23, 200311.83−0.17Action6,040
8Aug 15, 202111.54−0.46Action5,380
9Sep 8, 201111.29−0.71Action—
10Jun 10, 201311.26−0.74Action5,150
11Jul 28, 201711.22−0.78Action5,110
12Sep 6, 200811.19−0.81Action5,090
13Feb 24, 201610.90−1.10Action4,850
14Jun 15, 202110.74−1.26Action4,710
15May 16, 201410.37−1.63Action4,400
16Sep 10, 198510.36−1.64Action4,480
17Nov 28, 199310.23−1.77Action4,310
18Jun 26, 198710.12−1.88Action4,310
19Jul 9, 202110.05−1.95Action4,130
20Jun 22, 20009.79−2.21Action4,300
21Oct 23, 19909.66−2.34Action3,990
22Sep 28, 20049.29−2.71Action3,840
23Jun 29, 20059.28−2.72Action3,490
24May 29, 20099.03−2.97Action3,280
25May 22, 20019.01−2.99Action3,590
26Jul 24, 19928.90−3.10Action3,460
27Jun 14, 19998.58−3.42Action3,160
28Jun 13, 20078.56−3.44Action2,890
29Aug 30, 19748.55−3.45Action2,930
30May 9, 19908.38−3.62Action3,090
31Sep 5, 19798.36−3.64Action3,080
32May 5, 19898.25−3.75Action3,100
33Jun 1, 19828.20−3.80Action2,960
34Jul 20, 19868.15−3.85Action2,930
35Nov 23, 19928.10−3.90Action2,480
36Jun 28, 20108.01−3.99Action2,440
37Jul 4, 19817.96−4.04Action2,800
38Sep 22, 19987.94−4.06Action2,310
39Jun 21, 19837.92−4.08Action2,770
40Mar 29, 19847.90−4.10Action2,400
41May 6, 19887.87−4.13Action2,740
42Oct 1, 19797.49−4.51Action2,470
43Apr 19, 20027.48−4.52Action2,080
44Mar 8, 19957.28−4.72Action1,610
45Jan 19, 19967.18−4.82Action1,500
46Mar 10, 20116.85−5.15Action—
47Mar 6, 20116.84−5.16Action1,479
48Aug 28, 20116.73−5.27Action—
49Apr 17, 20115.76−6.24Below flood stage—

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

NOAA National Water Prediction Service, gauge AFRV2, 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.