South Mayo River near Nettleridge, VA 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 02069700 sits on the South Mayo River and reads everything draining 86 square miles of the Upper Dan basin. Its datum sits 871 feet above sea level NAVD88. Daily flow has been on record here since 1963, 63 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 Mayo River near Price, NC at 242 square miles, so what passes this gauge is about 35% of the water measured there. Water passing here goes on to Dan River near Wentworth, NC.

Normal flows here

The South Mayo River runs a median of 96 cfs at this gauge across 63 years of record. March is the fullest month at a median 127 cfs, and September the leanest at 62 cfs. The highest daily mean on record is 6,820 cfs in 1972, and the lowest is 8.7 cfs in 2002.

Medians from the USGS daily-statistics record, 1963 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The South Mayo River reaches flood stage at this gauge at 12 feet. NWS starts watching it at 10 feet. The highest crest on record is 22 feet, in September 1979.

Flood categories and crest history from the NOAA National Water Prediction Service, gauge NTLV2. Stages are gage height, not depth. Not for navigation.