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Waccamaw River near Longs, SC Water Level Today

South Carolina · USGS gauge 02110500 · live data · Updated Oct 28, 2026

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About this gauge

USGS gauge 02110500 sits on the Waccamaw River and reads everything draining 1,110 square miles of the Waccamaw basin. Its datum sits 4 feet above sea level NAVD88. Daily flow has been on record here since 1950, 76 years of it.

Where this gauge sits in the drainage

One gauged site sits upstream of here. The closest is Waccamaw River at Freeland, NC, reading 680 square miles. This gauge adds the 430 square miles that drain in between. Downstream the next reading comes from Waccamaw River at Sc-22 below Longs, SC at 1,230 square miles, so what passes this gauge is about 90% of the water measured there. Water passing here goes on to Waccamaw River at Conway Marina at Conway, SC.

Normal flows here

The Waccamaw River runs a median of 530 cfs at this gauge across 76 years of record. February is the fullest month at a median 1,620 cfs, and November the leanest at 256 cfs. The highest daily mean on record is 53,700 cfs in 2018, and the lowest is 1.0 cfs in 1955.

Median flow by month
MonthMedian flowShare of annual median
Jan1,290 cfs243%
Feb1,620 cfs306%
Mar1,540 cfs291%
Apr1,190 cfs225%
May443 cfs84%
Jun286 cfs54%
Jul311 cfs59%
Aug447 cfs84%
Sep590 cfs111%
Oct361 cfs68%
Nov256 cfs48%
Dec610 cfs115%

Medians from the USGS daily-statistics record, 1950 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The Waccamaw River reaches flood stage at this gauge at 12 feet. NWS starts watching it at 11 feet. The highest crest on record is 20.2 feet, in September 2018.

NWS flood categories
CategoryGage height
Action11 ft
Minor flooding12 ft
Moderate flooding15 ft
Major flooding17 ft
Highest crests on record
WhenCrest
September 201820.2 ft
September 199917.9 ft
October 201616.9 ft
October 201515.2 ft
September 199614.9 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge LNGS1. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 02110500. Percentile context computed against the gauge's period of record. Not for navigation.

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