Chattahoochee River near Cornelia, GA Water Level Today

NWS river forecast

Forecast from the NOAA National Water Prediction Service. Issued a few times a day and only while a forecast is active. Not for navigation.

Last 30 days

About this gauge

USGS gauge 02331600 sits on the Chattahoochee River and reads everything draining 315 square miles of the Upper Chattahoochee basin. Its datum sits 1,129 feet above sea level NAVD88. Daily flow has been on record here since 1957, 69 years of it.

Where this gauge sits in the drainage

Two gauged sites sit upstream of here. The closest is Chattahoochee River near Leaf, GA, reading 150 square miles. This gauge adds the 165 square miles that drain in between. Downstream the next reading comes from Chattahoochee River near Gainesville, GA at 576 square miles, so what passes this gauge is about 55% of the water measured there. Water passing here goes on to Chattahoochee River Buford Dam near Buford, GA and Chattahoochee River at Buford Dam, near Buford, GA.

Normal flows here

The Chattahoochee River runs a median of 610 cfs at this gauge across 69 years of record. March is the fullest month at a median 964 cfs, and September the leanest at 389 cfs. The highest daily mean on record is 16,300 cfs in 2021, and the lowest is 66 cfs in 2008.

Medians from the USGS daily-statistics record, 1957 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The Chattahoochee River reaches flood stage at this gauge at 14 feet. NWS starts watching it at 11 feet. The highest crest on record is 20.6 feet, in October 2020.

Flood categories and crest history from the NOAA National Water Prediction Service, gauge DCNG1. Stages are gage height, not depth. Not for navigation.