Spout Run at Rt 621 near Millwood, 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 01636316 sits on Spout Run and reads everything draining 21 square miles of the Shenandoah basin. Its datum sits 430 feet above sea level NAVD88. Daily flow has been on record here since 2002, 24 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 Potomac River at Burkittsville Rd at Brunswick, MD at 9,453 square miles, so what passes this gauge is about 0% of the water measured there. Water passing here goes on to Potomac River at Point of Rocks, MD.

Normal flows here

Spout Run runs a median of 15 cfs at this gauge across 24 years of record. May is the fullest month at a median 21 cfs, and August the leanest at 11 cfs. The highest daily mean on record is 512 cfs in 2018, and the lowest is 0.1 cfs in 2025.

Medians from the USGS daily-statistics record, 2002 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

Spout Run reaches flood stage at this gauge at 12.5 feet. NWS starts watching it at 10 feet. The highest crest on record is 4.9 feet, in June 2018.

Flood categories and crest history from the NOAA National Water Prediction Service, gauge MLWV2. Stages are gage height, not depth. Not for navigation.