Olley Creek at Clay Road, near Austell, 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 02336986 sits on Olley Creek and reads everything draining 14 square miles of the Middle Chattahoochee-Lake Harding basin. Its datum sits 879 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 Sweetwater Creek near Austell, GA at 238 square miles, so what passes this gauge is about 6% of the water measured there. Water passing here goes on to Sweetwater Creek below Austell, GA, Chattahoochee River near Fairburn, GA and Chattahoochee River above Bear Creek, near Rico, GA.

Normal flows here

Olley Creek runs a median of 8.6 cfs at this gauge across 19 years of record. February is the fullest month at a median 17 cfs, and September the leanest at 2.8 cfs. The highest daily mean on record is 2,200 cfs in 2009, and the lowest is 0.1 cfs in 2011.

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

Olley Creek reaches flood stage at this gauge at 12 feet. NWS starts watching it at 9 feet. The highest crest on record is 27.4 feet, in September 2009.

Flood categories and crest history from the NOAA National Water Prediction Service, gauge OLYG1. Stages are gage height, not depth. Not for navigation.

Dams near this gauge

The Army Corps' Morgan Falls Dam is 17 miles from this gauge. The Corps publishes no release schedule for this project; its last observed release and elevations load below.

• Morgan Falls Dam 17 miles
• Allatoona Dam 23 miles