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South River at GA 81 at Snapping Shoals

Highest listed crest 16.41 ftFlood stage 12.0 ft19 crests since 2009

The South River at GA 81 at Snapping Shoals crested above flood stage 19 times among the 19 crests the National Weather Service lists from 2009 to 2024. The highest, 16.41 ft on September 28, 2024, was moderate flooding, 4.41 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
16.41 ft
September 28, 2024
Flood stage
12.0 ft
Major flooding from 20.0 ft
Crests at major
0
19 above flood stage
Most recent flood crest
September 28, 2024
16.41 ft, moderate flooding
Location
Henry County
Near Covington (10.5 mi), McDonough (11.4 mi), Conyers (12.0 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 GA 81 at Snapping Shoals
Action stage10.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)12.018Feb 7, 2020Minimal or no property damage, but possibly some public threat
Moderate flood stage16.01Sep 28, 2024Some inundation of structures and roads near the stream
Major flood stage20.00—Extensive inundation of structures and roads

Every listed crest

19 crests from 2009 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the South River at GA 81 at Snapping Shoals, 2009 to 2024 1214161820ft Flood stage 12.0 ftMajor 20.0 ft Sep 22, 2009: 13.18 ft, minor floodingNov 12, 2009: 12.95 ft, minor floodingDec 26, 2009: 12.13 ft, minor floodingJan 26, 2010: 13.36 ft, minor floodingFeb 6, 2010: 12.57 ft, minor floodingMay 6, 2013: 13.04 ft, minor floodingDec 23, 2013: 12.84 ft, minor floodingJan 12, 2014: 12.11 ft, minor floodingNov 3, 2015: 12.69 ft, minor floodingDec 26, 2015: 14.53 ft, minor floodingDec 31, 2015: 12.96 ft, minor floodingApr 6, 2017: 12.07 ft, minor floodingDec 10, 2018: 12.57 ft, minor floodingDec 29, 2018: 12.29 ft, minor floodingJan 5, 2019: 12.41 ft, minor floodingJan 25, 2019: 12.29 ft, minor floodingApr 20, 2019: 14.85 ft, minor floodingFeb 7, 2020: 12.73 ft, minor floodingSep 28, 2024: 16.41 ft, moderate flooding Highest, 16.41 ft, Sep 28, 2024 2010201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, South River at GA 81 at Snapping Shoals 2000s: 3 2010s: 14 14 2020s: 2 2000s2010s2020s
  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 GA 81 at Snapping Shoals
1Sep 28, 202416.41+4.41Moderate—
2Apr 20, 201914.85+2.85Minor—
3Dec 26, 201514.53+2.53Minor—
4Jan 26, 201013.36+1.36Minor—
5Sep 22, 200913.18+1.18Minor—
6May 6, 201313.04+1.04Minor—
7Dec 31, 201512.96+0.96Minor—
8Nov 12, 200912.95+0.95Minor—
9Dec 23, 201312.84+0.84Minor—
10Feb 7, 202012.73+0.73Minor—
11Nov 3, 201512.69+0.69Minor—
12Feb 6, 201012.57+0.57Minor—
13Dec 10, 201812.57+0.57Minor—
14Jan 5, 201912.41+0.41Minor—
15Dec 29, 201812.29+0.29Minor—
16Jan 25, 201912.29+0.29Minor—
17Dec 26, 200912.13+0.13Minor—
18Jan 12, 201412.11+0.11Minor—
19Apr 6, 201712.07+0.07Minor—

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 28, 2024: 16.41 ft here, moderate flooding

April 20, 2019: 14.85 ft here, minor flooding

December 26, 2015: 14.53 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 AtlantaGA15.016.01 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 Shoals this gaugeGA12.016.41 ft, Sep 28, 20240

Other gauges in Henry County

Flood gauges in Henry County
Flippen12.016.20 ft, Jul 5, 19940

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

NOAA National Water Prediction Service, gauge SPGG1, 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.