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Chattahoochee River at US 41 at Atlanta

Highest listed crest 28.59 ftFlood stage 14.0 ft23 crests since 1979

The Chattahoochee River at US 41 at Atlanta crested at major flood stage 5 times among the 23 crests the National Weather Service lists from 1979 to 2025. The highest, 28.59 ft on September 22, 2009, was major flooding, 14.59 feet above flood stage. 10 other gauges on the Chattahoochee River crested above flood stage within a week of it, 5 at their own highest listed crest.

The gauge

Highest listed crest
28.59 ft
September 22, 2009
Flood stage
14.0 ft
Major flooding from 20.0 ft
Crests at major
5
24th of 271 gauges in Georgia
Most recent flood crest
February 13, 2025
16.46 ft, minor flooding
Location
Cobb County
Near Smyrna (3.6 mi), Sandy Springs (6.6 mi), Brookhaven (6.7 mi)

Flood stages

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

Flood categories, Chattahoochee River at US 41 at Atlanta
Action stage12.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)14.015Feb 13, 2025Minimal or no property damage, but possibly some public threat
Moderate flood stage18.03Apr 19, 2019Some inundation of structures and roads near the stream
Major flood stage20.05Sep 27, 2024Extensive inundation of structures and roads

Every listed crest

23 crests from 1979 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Chattahoochee River at US 41 at Atlanta, 1979 to 2025 1015202530ft Flood stage 14.0 ftMajor 20.0 ft Apr 13, 1979: 22.99 ft, major flooding; 26,700 cubic feet per secondMar 17, 1990: 23.65 ft, major flooding; 25,100 cubic feet per secondSep 22, 2009: 28.59 ft, major floodingOct 12, 2009: 17.91 ft, minor floodingNov 11, 2009: 19.77 ft, moderate floodingDec 18, 2009: 14.00 ft, minor floodingMay 3, 2010: 14.67 ft, minor floodingMay 5, 2013: 14.98 ft, minor floodingApr 7, 2014: 15.33 ft, minor floodingJan 15, 2016: 15.24 ft, minor floodingNov 13, 2018: 15.78 ft, minor floodingDec 28, 2018: 19.31 ft, moderate floodingApr 19, 2019: 18.62 ft, moderate floodingFeb 7, 2020: 16.10 ft, minor floodingMar 25, 2020: 14.65 ft, minor floodingSep 17, 2020: 17.14 ft, minor floodingOct 11, 2020: 20.50 ft, major floodingSep 8, 2021: 17.52 ft, minor floodingJan 4, 2023: 16.89 ft, minor floodingJan 9, 2024: 14.86 ft, minor floodingMar 6, 2024: 15.71 ft, minor floodingSep 27, 2024: 24.13 ft, major floodingFeb 13, 2025: 16.46 ft, minor flooding Highest, 28.59 ft, Sep 22, 2009 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Chattahoochee River at US 41 at Atlanta 1970s: 1 1980s: 0 1990s: 1 2000s: 4 2010s: 7 2020s: 10 10 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, Chattahoochee River at US 41 at Atlanta
1Sep 22, 200928.59+14.59Major—
2Sep 27, 202424.13+10.13Major—
3Mar 17, 199023.65+9.65Major25,100
4Apr 13, 197922.99+8.99Major26,700
5Oct 11, 202020.50+6.50Major—
6Nov 11, 200919.77+5.77Moderate—
7Dec 28, 201819.31+5.31Moderate—
8Apr 19, 201918.62+4.62Moderate—
9Oct 12, 200917.91+3.91Minor—
10Sep 8, 202117.52+3.52Minor—
11Sep 17, 202017.14+3.14Minor—
12Jan 4, 202316.89+2.89Minor—
13Feb 13, 202516.46+2.46Minor—
14Feb 7, 202016.10+2.10Minor—
15Nov 13, 201815.78+1.78Minor—
16Mar 6, 202415.71+1.71Minor—
17Apr 7, 201415.33+1.33Minor—
18Jan 15, 201615.24+1.24Minor—
19May 5, 201314.98+0.98Minor—
20Jan 9, 202414.86+0.86Minor—
21May 3, 201014.67+0.67Minor—
22Mar 25, 202014.65+0.65Minor—
23Dec 18, 200914.000.00Minor—

The worst floods along the Chattahoochee River

For this gauge's highest crests, the other gauges on the Chattahoochee River that crested above flood stage within a week.

September 22, 2009: 28.59 ft here, major flooding

September 27, 2024: 24.13 ft here, major flooding

March 17, 1990: 23.65 ft here, major flooding

Gauges on the Chattahoochee River

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

Flood gauges on the Chattahoochee River
HelenGA6.012.00 ft, Aug 23, 19672
CorneliaGA14.020.63 ft, Oct 11, 20200
Highway 141 near NorcrossGA12.027.70 ft, Jan 8, 194613
RoswellGA9.011.96 ft, Sep 21, 20090
Morgan Falls Dam near RoswellGA821.0827.01 ft, Sep 22, 20091
US 41 at Atlanta this gaugeGA14.028.59 ft, Sep 22, 20095
AtlantaGA14.029.00 ft, Dec 10, 191913
GA 280 near AtlantaGA24.035.98 ft, Sep 22, 20093
FairburnGA20.031.60 ft, Dec 10, 19192
WhitesburgGA17.029.74 ft, Sep 23, 20093
GA 100 at FranklinGA23.030.55 ft, Sep 24, 20091
West PointGA17.029.25 ft, Dec 10, 191914
14th Street at ColumbusAL27.055.20 ft, Mar 15, 19294
W.F. George Lock and DamAL134.0158.50 ft, Mar 17, 19290
George W. Andrews Lock and Dam (USACE)GA106.0128.28 ft, Mar 18, 19291

Other gauges in Cobb County

Flood gauges in Cobb County
Stilesboro Road near Acworth13.023.90 ft, Sep 21, 20091
Mack Dobbs Road near Kennesaw11.014.27 ft, Sep 21, 20090
US Highway 78 and 278 near Mableton10.019.85 ft, Sep 22, 20090
Chastain Meadows Parkway near Kennesaw11.011.94 ft, Sep 27, 20240
Hawkins Store Road near Blackwells11.017.31 ft, Sep 21, 20090
Shallowford River near Woodstock10.019.66 ft, Sep 21, 20091
Powder Springs Road near Powder Springs11.023.20 ft, Sep 22, 20091
Clay Road near Austell12.027.40 ft, Sep 22, 20091
Powder Springs11.019.82 ft, Sep 21, 20090
Interstate North Parkway near Smyrna14.014.67 ft, Sep 8, 20210
GA 120 near Marietta11.013.26 ft, Sep 21, 20090
Lower Roswell Road near Marietta12.021.10 ft, Mar 30, 19776
Brownsville Road near Powder Springs13.031.45 ft, Sep 21, 20091
Northwest Austell19.037.04 ft, Sep 22, 20091
GA 120 near Roswell12.014.70 ft, Sep 21, 20090

Cobb County: every hazard · River floods across the country · Georgia

NOAA National Water Prediction Service, gauge VIXG1, 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.