Sewell Mill Creek at GA 120, near Marietta, 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 023358685 sits on Sewell Mill Creek and reads everything draining 13 square miles of the Upper Chattahoochee basin. Its datum sits 914 feet above sea level NAVD88. Daily flow has been on record here since 2007, 19 years of it.

Where this gauge sits in the drainage

No gauged site sits above this one on the mainstem, so this is the first published reading on the river. Downstream the next reading comes from Sope Creek near Marietta, GA at 31 square miles, so what passes this gauge is about 41% of the water measured there. Water passing here goes on to Chatt River at Powers Fy and I-285 near Atlanta, GA, Chattahoochee River at US 41, at Atlanta, GA and Chattahoochee River at Atlanta, GA.

Normal flows here

Sewell Mill Creek runs a median of 10 cfs at this gauge across 19 years of record. February is the fullest month at a median 17 cfs, and September the leanest at 4.2 cfs. The highest daily mean on record is 1,590 cfs in 2009, and the lowest is 0.1 cfs in 2008.

Medians from the USGS daily-statistics record, 2007 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

Sewell Mill Creek reaches flood stage at this gauge at 11 feet. NWS starts watching it at 9 feet. The highest crest on record is 13.3 feet, in September 2009.

Flood categories and crest history from the NOAA National Water Prediction Service, gauge SMCG1. Stages are gage height, not depth. Not for navigation.

Dams near this gauge

The Army Corps' Morgan Falls Dam is 4 miles from this gauge. The Corps publishes no release schedule for this project; its last observed release and elevations load below.

• Morgan Falls Dam 4 miles
• Allatoona Dam 20 miles