Hillsborough River at Morris Br near Thonotosassa 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 02303330 sits on the Hillsborough River and reads everything draining 375 square miles of the Hillsborough basin. Its datum sits essentially at sea level NGVD29. Daily flow has been on record here since 1973, 52 years of it.

Where this gauge sits in the drainage

One gauged site sits upstream of here. The closest is Hillsborough River above Crystal Spr near Zephyrhills FL, reading 82 square miles. This gauge adds the 293 square miles that drain in between. Downstream the next reading comes from Hillsborough River near Tampa FL at 624 square miles, so what passes this gauge is about 60% of the water measured there. Water passing here goes on to Hillsborough River at Fowler Av near Temple Terrace FL, Hillsborough River at I-275 Bridge at Sulphur Springs FL and Hillsborough River at Platt Street at Tampa FL.

Normal flows here

The Hillsborough River runs a median of 118 cfs at this gauge across 52 years of record. September is the fullest month at a median 397 cfs, and May the leanest at 67 cfs. The highest daily mean on record is 5,710 cfs in 2004, and the lowest is 21 cfs in 2000.

Medians from the USGS daily-statistics record, 1973 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The Hillsborough River reaches flood stage at this gauge at 32 feet. NWS starts watching it at 30.5 feet. The highest crest on record is 34.7 feet, in September 2017.

Flood categories and crest history from the NOAA National Water Prediction Service, gauge MORF1. Stages are gage height, not depth. Not for navigation.