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Second Broad River near Logan, NC Flow & Water Level

North Carolina · USGS gauge 02150495 · live data

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About this gauge

USGS gauge 02150495 sits on the Second Broad River and reads everything draining 86 square miles of the Upper Broad basin. Its datum sits 820 feet above sea level NAVD88. Daily flow has been on record here since 1999, 28 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 Broad River near Boiling Springs, NC at 875 square miles, so what passes this gauge is about 10% of the water measured there. It then enters Gaston Shoals Reservoir above Blacksburg, SC, below which releases set the flow.

Normal flows here

The Second Broad River runs a median of 77 cfs at this gauge across 28 years of record. March is the fullest month at a median 105 cfs, and October the leanest at 56 cfs. The highest daily mean on record is 4,010 cfs in 2024, and the lowest is 6.6 cfs in 2002.

Median flow by month
MonthMedian flowShare of annual median
Jan103 cfs134%
Feb98 cfs127%
Mar105 cfs136%
Apr104 cfs135%
May90 cfs117%
Jun68 cfs88%
Jul59 cfs77%
Aug64 cfs83%
Sep57 cfs74%
Oct56 cfs73%
Nov69 cfs90%
Dec84 cfs109%

Medians from the USGS daily-statistics record, 1999 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The Second Broad River reaches flood stage at this gauge at 22 feet. NWS starts watching it at 15 feet. The highest crest on record is 17.9 feet, in August 1940.

NWS flood categories
CategoryGage height
Action15 ft
Minor flooding22 ft
Moderate flooding26 ft
Major flooding28 ft
Highest crests on record
WhenCrest
August 194017.9 ft
January 201016.4 ft
September 200415.9 ft
July 200515.7 ft
April 200314.9 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge LOGN7. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 02150495. Percentile context computed against the gauge's period of record. Not for navigation.

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