TidalMap
Explore this water on the live chart →

South Tyger River below Duncan, SC Water Level Today

South Carolina · USGS gauge 02158408 · live data · Updated Oct 28, 2026

Loading…

About this gauge

USGS gauge 02158408 sits on the South Tyger River and reads everything draining 94 square miles of the Tyger basin. Its datum sits 714 feet above sea level NAVD88. Daily flow has been on record here since 2001, 23 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 Tyger River near Woodruff, SC at 351 square miles, so what passes this gauge is about 27% of the water measured there.

Normal flows here

The South Tyger River runs a median of 81 cfs at this gauge across 23 years of record. March is the fullest month at a median 131 cfs, and September the leanest at 48 cfs. The highest daily mean on record is 5,240 cfs in 2024, and the lowest is 8.9 cfs in 2008.

Median flow by month
MonthMedian flowShare of annual median
Jan123 cfs152%
Feb123 cfs152%
Mar131 cfs162%
Apr114 cfs141%
May92 cfs114%
Jun67 cfs83%
Jul51 cfs63%
Aug57 cfs70%
Sep48 cfs59%
Oct59 cfs73%
Nov69 cfs85%
Dec103 cfs127%

Medians from the USGS daily-statistics record, 2001 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The South Tyger River reaches flood stage at this gauge at 17 feet. NWS starts watching it at 16 feet. The highest crest on record is 16.7 feet, in July 2005.

NWS flood categories
CategoryGage height
Action16 ft
Minor flooding17 ft
Moderate flooding25 ft
Major flooding38 ft
Highest crests on record
WhenCrest
July 200516.7 ft
August 201415 ft
March 200313.4 ft
September 200212.3 ft
September 200412.2 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge DUCS1. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 02158408. Percentile context computed against the gauge's period of record. Not for navigation.

Open South Tyger River below Duncan, SC on the live chart →

River pins, dam-release overlays and wadability lines live in the app, start a free TidalMap trial.