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Johns River at Arneys Store, NC Flow & Water Level

North Carolina · USGS gauge 02140991 · live data

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About this gauge

USGS gauge 02140991 sits on the Johns River and reads everything draining 201 square miles of the Upper Catawba basin. Its datum sits 1,003 feet above sea level NAVD88. Daily flow has been on record here since 1985, 41 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 Catawba River near Granite Falls, NC at 1,070 square miles, so what passes this gauge is about 19% of the water measured there. Water passing here goes on to Catawba River at Rhodhiss, NC, Catawba River at NC Highway 16 near Millersville, NC and Catawba River below Lookout Shoals Dam near Sharon, NC.

Normal flows here

The Johns River runs a median of 263 cfs at this gauge across 41 years of record. March is the fullest month at a median 376 cfs, and October the leanest at 175 cfs. The highest daily mean on record is 27,800 cfs in 2024, and the lowest is 19 cfs in 2002.

Median flow by month
MonthMedian flowShare of annual median
Jan325 cfs124%
Feb352 cfs134%
Mar376 cfs143%
Apr368 cfs140%
May307 cfs117%
Jun252 cfs96%
Jul209 cfs79%
Aug194 cfs74%
Sep184 cfs70%
Oct175 cfs67%
Nov200 cfs76%
Dec284 cfs108%

Medians from the USGS daily-statistics record, 1985 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

The Johns River reaches flood stage at this gauge at 12 feet. NWS starts watching it at 8.5 feet. The highest crest on record is 28.6 feet, in September 2004.

NWS flood categories
CategoryGage height
Action8.5 ft
Minor flooding12 ft
Moderate flooding18 ft
Major flooding24 ft
Highest crests on record
WhenCrest
September 200428.6 ft
August 199425.2 ft
January 199524 ft
May 201820.3 ft
August 199619.3 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge JOHN7. Stages are gage height, not depth. Not for navigation.

Nearby river gauges

Live streamflow and gage height: USGS gauge 02140991. Percentile context computed against the gauge's period of record. Not for navigation.

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