Widespread Heavy Rain Falls Upstream of Lake Lanier

The frontal system that moved through the region yesterday brought widespread heavy rain over the Upper Chattahoochee River Basin upstream of Lake Lanier, Georgia. A narrow band of rainfall in the 6 to 8 inch range was reported. However, even more important is the widesread nature of this rain event. At least 3 inches of rain covered the entire basin, with a basin average likely close to 4 inches. This amount of rain, covering the entire basin, will result in significant, and welcome, inflows into Lake Lanier.

4-Hour Rainfall Totals

CoCoRaHS Rain Gage Reports

Here is a USGS streamflow hydrograph of a feeder tributary (Chattahoochee River Near Cornemia, GA) into Lake Lanier. Note that the flow increased from a base flow around 200 cfs, to nearly 10,000 cfs.