Cahaba River near Helena AL 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 02423555 sits on the Cahaba River and reads everything draining 335 square miles of the Cahaba basin. Its datum sits 357 feet above sea level NAVD88. Daily flow has been on record here since 1996, 22 years of it.

Where this gauge sits in the drainage

Five gauged sites sit upstream of here. The closest is Cahaba River near Acton AL, reading 230 square miles. This gauge adds the 105 square miles that drain in between. Downstream the next reading comes from Cahaba River near West Blocton AL at 593 square miles, so what passes this gauge is about 56% of the water measured there. Water passing here goes on to Cahaba River at Centreville AL.

Normal flows here

The Cahaba River runs a median of 176 cfs at this gauge across 22 years of record. March is the fullest month at a median 683 cfs, and October the leanest at 57 cfs. The highest daily mean on record is 19,800 cfs in 2022, and the lowest is 20 cfs in 2001.

Medians from the USGS daily-statistics record, 1996 to 2026. A month at 100% is running at its own long-term median.