South Prong Alafia River near Ft Lonesome FL 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 02301150 sits on the South Prong Alafia River and reads everything draining 73 square miles of the Alafia basin. Its datum sits essentially at sea level NAVD88. Daily flow has been on record here since 2009, 17 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 South Prong Alafia River near Lithia FL at 107 square miles, so what passes this gauge is about 68% of the water measured there. Water passing here goes on to Alafia River at Lithia Pinecrest Rd at Lithia, FL and Alafia River at Gibsonton FL.

Normal flows here

The South Prong Alafia River runs a median of 35 cfs at this gauge across 17 years of record. September is the fullest month at a median 126 cfs, and May the leanest at 15 cfs. The highest daily mean on record is 937 cfs in 2017, and the lowest is 0.0 cfs in 2025.

Medians from the USGS daily-statistics record, 2009 to 2026. A month at 100% is running at its own long-term median.