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Lake Thurmond

Highest listed crest 336.46 ftFlood stage 335.0 ft6 crests since 1964

The Lake Thurmond crested above flood stage 6 times among the 6 crests the National Weather Service lists from 1964 to 2016. The highest, 336.46 ft on April 11, 1964, was moderate flooding, 1.46 feet above flood stage.

The gauge

Highest listed crest
336.46 ft
April 11, 1964
Flood stage
335.0 ft
Major flooding from 338.0 ft
Crests at major
0
6 above flood stage
Most recent flood crest
January 1, 2016
336.03 ft, moderate flooding
Location
Columbia County
Near Grovetown (14.6 mi)

Flood stages

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

Flood categories, Lake Thurmond
Action stage334.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)335.04Feb 7, 1998Minimal or no property damage, but possibly some public threat
Moderate flood stage336.02Jan 1, 2016Some inundation of structures and roads near the stream
Major flood stage338.00—Extensive inundation of structures and roads

Every listed crest

6 crests from 1964 to 2016. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Lake Thurmond, 1964 to 2016 335336337338ft Flood stage 335.0 ftMajor 338.0 ft Mar 30, 1964: 335.38 ft, minor floodingApr 11, 1964: 336.46 ft, moderate floodingMay 6, 1964: 335.41 ft, minor floodingMar 7, 1971: 335.28 ft, minor floodingFeb 7, 1998: 335.45 ft, minor floodingJan 1, 2016: 336.03 ft, moderate flooding Highest, 336.46 ft, Apr 11, 1964 19701980199020002010

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Lake Thurmond 1960s: 3 3 1970s: 1 1980s: 0 1990s: 1 2000s: 0 2010s: 1 1960s1970s1980s1990s2000s2010s
  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, Lake Thurmond
1Apr 11, 1964336.46+1.46Moderate—
2Jan 1, 2016336.03+1.03Moderate—
3Feb 7, 1998335.45+0.45Minor—
4May 6, 1964335.41+0.41Minor—
5Mar 30, 1964335.38+0.38Minor—
6Mar 7, 1971335.28+0.28Minor—

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

NOAA National Water Prediction Service, gauge CHDS1, 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.