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South River at Bouldercrest Road at Atlanta

Highest listed crest 16.01 ftFlood stage 15.0 ft6 crests since 1960

The South River at Bouldercrest Road at Atlanta crested above flood stage 1 time among the 6 crests the National Weather Service lists from 1960 to 2024. The highest, 16.01 ft on September 27, 2024, was minor flooding, 1.01 feet above flood stage. 4 other gauges on the South River crested above flood stage within a week of it, 3 at their own highest listed crest.

The gauge

Highest listed crest
16.01 ft
September 27, 2024
Flood stage
15.0 ft
Major flooding from 28.0 ft
Crests at major
0
1 above flood stage
Most recent flood crest
September 27, 2024
16.01 ft, minor flooding
Location
DeKalb County
Near Forest Park (5.0 mi), Decatur (6.4 mi), Atlanta (8.8 mi)

Flood stages

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

Flood categories, South River at Bouldercrest Road at Atlanta
Action stage13.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)15.01Sep 27, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage25.00—Some inundation of structures and roads near the stream
Major flood stage28.00—Extensive inundation of structures and roads

Every listed crest

6 crests from 1960 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the South River at Bouldercrest Road at Atlanta, 1960 to 2024 51015202530ft Flood stage 15.0 ftMajor 28.0 ft Jan 30, 1960: 9.27 ft, below flood stageFeb 25, 1961: 11.09 ft, below flood stageMar 16, 1976: 11.88 ft, below flood stageMay 23, 1980: 10.13 ft, below flood stageMar 17, 1990: 10.61 ft, below flood stageSep 27, 2024: 16.01 ft, minor flooding Highest, 16.01 ft, Sep 27, 2024 1960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, South River at Bouldercrest Road at Atlanta 1960s: 0 1970s: 0 1980s: 0 1990s: 0 2000s: 0 2010s: 0 2020s: 1 1 1960s1970s1980s1990s2000s2010s2020s
  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, South River at Bouldercrest Road at Atlanta
1Sep 27, 202416.01+1.01Minor—
2Mar 16, 197611.88−3.12Below flood stage—
3Feb 25, 196111.09−3.91Below flood stage—
4Mar 17, 199010.61−4.39Below flood stage—
5May 23, 198010.13−4.87Below flood stage—
6Jan 30, 19609.27−5.73Below flood stage—

The worst floods along the South River

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

September 27, 2024: 16.01 ft here, minor flooding

Gauges on the South River

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

Flood gauges on the South River
Forrest Park Road at AtlantaGA15.016.62 ft, Sep 19, 20090
Bouldercrest Road at Atlanta this gaugeGA15.016.01 ft, Sep 27, 20240
Flakes Mill Road near SnapfingerGA13.021.42 ft, Sep 27, 20240
Klondike Road near LithoniaGA12.015.42 ft, Sep 27, 20240
GA 81 at Snapping ShoalsGA12.016.41 ft, Sep 28, 20240

Other gauges in DeKalb County

Flood gauges in DeKalb County
Montreal Road near Tucker8.08.64 ft, Oct 11, 20200
Rainbow Drive near Decatur11.013.32 ft, Oct 11, 20200
Constitution Road near Atlanta11.014.23 ft, Sep 16, 20040
Johnson Ferry Road near Chamblee16.022.50 ft, Sep 21, 20090
Briarwood Road near Atlanta10.015.81 ft, Sep 27, 20240
Buford Highway at Atlanta13.018.57 ft, Sep 21, 20094
Evans Mill Road near Lithonia8.08.25 ft, Apr 19, 20190
Columbia Drive near Atlanta11.013.42 ft, Dec 24, 20150
Redan Road near Glen Haven12.018.00 ft, Sep 21, 20090
Thompson Mill Road near Lithonia16.017.54 ft, Oct 11, 20200
Casa Drive at Clarkston10.010.25 ft, Sep 27, 20240
Johnson Road near Atlanta13.016.53 ft, Sep 27, 20240
Flakes Mill Road near Snapfinger13.021.42 ft, Sep 27, 20240
Silver Hill Road near Stone Mountain9.09.94 ft, Oct 11, 20200
GA 124 near Lithonia15.027.47 ft, Sep 21, 20091
Pleasant Hill Road near Lithonia13.025.54 ft, Sep 22, 20091

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

NOAA National Water Prediction Service, gauge SOBG1, 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.