New River at Allisonia, 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 03168000 sits on the New River and reads everything draining 2,212 square miles of the Upper New basin. Its datum sits 1,848 feet above sea level NAVD88. Daily flow has been on record here since 1930, 97 years of it.

Where this gauge sits in the drainage

Two gauged sites sit upstream of here. The closest is New River at Ivanhoe, VA, reading 1,350 square miles. This gauge adds the 862 square miles that drain in between. Downstream the next reading comes from Claytor Reservoir at Claytor Dam near Radford, VA at 2,388 square miles, so what passes this gauge is about 93% of the water measured there. Water passing here goes on to New River at Radford, VA.

Normal flows here

The New River runs a median of 2,405 cfs at this gauge across 97 years of record. March is the fullest month at a median 3,850 cfs, and September the leanest at 1,410 cfs. The highest daily mean on record is 95,200 cfs in 2024, and the lowest is 369 cfs in 2008.

Medians from the USGS daily-statistics record, 1930 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The New River reaches flood stage at this gauge at 8 feet. NWS starts watching it at 7 feet. The highest crest on record is 23.4 feet, in August 1940.

Flood categories and crest history from the NOAA National Water Prediction Service, gauge ALSV2. Stages are gage height, not depth. Not for navigation.