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Sewee Creek near Decatur, TN Flow & Water Level

Tennessee · USGS gauge 03543500 · live data

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About this gauge

USGS gauge 03543500 sits on Sewee Creek and reads everything draining 117 square miles of the Middle Tennessee-Chickamauga basin. Its datum sits 694 feet above sea level NGVD29. Daily flow has been on record here since 1934, 75 years of it.

Normal flows here

Sewee Creek runs a median of 68 cfs at this gauge across 75 years of record. March is the fullest month at a median 240 cfs, and September the leanest at 28 cfs. The highest daily mean on record is 12,900 cfs in 1963, and the lowest is 8.1 cfs in 1988.

Median flow by month
MonthMedian flowShare of annual median
Jan201 cfs298%
Feb232 cfs344%
Mar240 cfs356%
Apr178 cfs264%
May90 cfs133%
Jun54 cfs81%
Jul44 cfs65%
Aug36 cfs53%
Sep28 cfs41%
Oct29 cfs43%
Nov41 cfs61%
Dec110 cfs163%

Medians from the USGS daily-statistics record, 1934 to 2026. A month at 100% is running at its own long-term median.

Flood stages and record crests

Sewee Creek reaches flood stage at this gauge at 10 feet. The highest crest on record is 24 feet, in January 1946.

NWS flood categories
CategoryGage height
Action10 ft
Minor flooding10 ft
Moderate flooding15 ft
Major flooding20 ft
Highest crests on record
WhenCrest
January 194624 ft
February 199417.3 ft
April 199417.1 ft
February 201916.5 ft
February 200415.7 ft

Flood categories and crest history from the NOAA National Water Prediction Service, gauge SEET1. Stages are gage height, not depth. Not for navigation.

TVA dams near this gauge

TVA's Watts Bar Dam is 3 miles from this gauge on the Tennessee system. Planned generation, lake level and tailwater elevation for it load below when TVA has published them.

Nearby river gauges

Live streamflow and gage height: USGS gauge 03543500. Percentile context computed against the gauge's period of record. Not for navigation.

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