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Dragon Swamp at Mascot, VA Water Level Today

Virginia · USGS gauge 01669520 · live data · Updated Oct 28, 2026

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About this gauge

USGS gauge 01669520 sits on Dragon Swamp and reads everything draining 109 square miles of the Great Wicomico-Piankatank basin. Its datum sits 20 feet above sea level NAVD88. Daily flow has been on record here since 1982, 44 years of it.

Normal flows here

Dragon Swamp runs a median of 72 cfs at this gauge across 44 years of record. March is the fullest month at a median 148 cfs, and September the leanest at 15 cfs. The highest daily mean on record is 6,050 cfs in 1999, and the lowest is 0.0 cfs in 2002.

Median flow by month
MonthMedian flowShare of annual median
Jan117 cfs164%
Feb142 cfs199%
Mar148 cfs207%
Apr125 cfs175%
May95 cfs133%
Jun59 cfs83%
Jul27 cfs38%
Aug25 cfs35%
Sep15 cfs21%
Oct30 cfs42%
Nov62 cfs86%
Dec104 cfs145%

Medians from the USGS daily-statistics record, 1982 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The highest crest on record is 13.2 feet, in September 1999.

Highest crests on record
WhenCrest
September 199913.2 ft
October 201812.3 ft
August 201110.4 ft
July 20049.5 ft
February 19989.4 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge DGSV2. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 01669520. Percentile context computed against the gauge's period of record. Not for navigation.

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