Rocky River near Starr, SC 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 02187910 sits on the Rocky River and reads everything draining 111 square miles of the Upper Savannah basin. Its datum sits 556 feet above sea level NAVD88. Daily flow has been on record here since 1989, 35 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 River B Russell Tailrace near Calhoun Falls, SC at 2,900 square miles, so what passes this gauge is about 4% of the water measured there.

Normal flows here

The Rocky River runs a median of 75 cfs at this gauge across 35 years of record. February is the fullest month at a median 136 cfs, and September the leanest at 40 cfs. The highest daily mean on record is 5,960 cfs in 2024, and the lowest is 4.9 cfs in 2008.

Medians from the USGS daily-statistics record, 1989 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The Rocky River reaches flood stage at this gauge at 20 feet. NWS starts watching it at 19 feet. The highest crest on record is 17.7 feet, in April 1998.

Flood categories and crest history from the NOAA National Water Prediction Service, gauge STRS1. Stages are gage height, not depth. Not for navigation.