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Tugalo River at YONAH DAM

Highest listed crest 748.70 ftFlood stage 748.0 ft3 crests since 1900

The Tugalo River at YONAH DAM crested above flood stage 1 time among the 3 crests the National Weather Service lists from 1900 to 2018. The highest, 748.70 ft on January 1, 1900, was minor flooding, 0.70 feet above flood stage.

The gauge

Highest listed crest
748.70 ft
January 1, 1900
Flood stage
748.0 ft
Major flooding from 758.0 ft
Crests at major
0
1 above flood stage
Most recent flood crest
January 1, 1900
748.70 ft, minor flooding
Location
Stephens County
Georgia
Identifiers
NWS YNHG1
No USGS station

Flood stages

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

Flood categories, Tugalo River at YONAH DAM
Action stage744.22May 30, 2018The level at which the NWS or its partners begin to take action
Flood stage (minor)748.01Jan 1, 1900Minimal or no property damage, but possibly some public threat
Moderate flood stage754.00—Some inundation of structures and roads near the stream
Major flood stage758.00—Extensive inundation of structures and roads

Every listed crest

3 crests from 1900 to 2018. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Tugalo River at YONAH DAM, 1900 to 2018 740745750755760ft Flood stage 748.0 ftMajor 758.0 ft Jan 1, 1900: 748.70 ft, minor floodingDec 30, 2015: 744.84 ft, action stageMay 30, 2018: 746.47 ft, action stage Highest, 748.70 ft, Jan 1, 1900 190019201940196019802000

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Tugalo River at YONAH DAM 1900s: 1 1 1910s: 0 1920s: 0 1930s: 0 1940s: 0 1950s: 0 1960s: 0 1970s: 0 1980s: 0 1990s: 0 2000s: 0 2010s: 0 1900s1910s1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s
  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, Tugalo River at YONAH DAM
1Jan 1, 1900748.70+0.70Minor—
2May 30, 2018746.47−1.53Action—
3Dec 30, 2015744.84−3.16Action—

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

NOAA National Water Prediction Service, gauge YNHG1, 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.