Flooding
The most recent floods on the Chattahoochee River were in early November 2009 floods. The flooding was caused when Tropical Storm Ida tore through the Piedmont. Downstream from Roswell, the Chattahoochee River remained in moderate flood. Streams affected by the early November 2009 floods included the following:
- Chattahoochee River
- Vickery Creek
- Johns Creek
- Sweetwater Creek
- Nancy Creek
- Peachtree Creek
- Oconee River
The second most recent major flood along the river occurred during the 2009 Georgia floods, with 28.10 feet (8.56 m) of water recorded at Vinings at the northwestern Atlanta city limit. The flood was over 5 feet (1.5 m) higher than the previous flood recorded in September 2004, as a result of Hurricane Fred. Numerous tributaries also swelled far over and beyond their banks. These were the highest water levels seen since 1990, and the second-highest ever since the large Buford Dam was built upstream. The National Weather Service in Peachtree City estimated that this was a 500-year flood event.
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