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Crabtree Swamp at Conway, SC Water Level Today

South Carolina · USGS gauge 02110701 · live data · Updated Oct 28, 2026

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About this gauge

USGS gauge 02110701 sits on Crabtree Swamp and reads everything draining 19 square miles of the Waccamaw basin. Its datum sits 9 feet below sea level NAVD88. Daily flow has been on record here since 2000, 19 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 Waccamaw River at Conway Marina at Conway, SC at 1,440 square miles, so what passes this gauge is about 1% of the water measured there.

Normal flows here

Crabtree Swamp runs a median of 11 cfs at this gauge across 19 years of record. February is the fullest month at a median 18 cfs, and May the leanest at 4.2 cfs. The highest daily mean on record is 1,460 cfs in 2025, and the lowest is -76.7 cfs in 2024.

Median flow by month
MonthMedian flowShare of annual median
Jan16 cfs145%
Feb18 cfs164%
Mar14 cfs127%
Apr8.6 cfs78%
May4.2 cfs38%
Jun8.6 cfs78%
Jul6.2 cfs56%
Aug14 cfs127%
Sep7.9 cfs72%
Oct8.1 cfs74%
Nov9.4 cfs85%
Dec17 cfs155%

Medians from the USGS daily-statistics record, 2000 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 25.3 feet, in September 2018.

Highest crests on record
WhenCrest
September 201825.3 ft
September 201823 ft
October 201520.2 ft
October 201519.6 ft
November 201516.7 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge CSCS1. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 02110701. Percentile context computed against the gauge's period of record. Not for navigation.

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