Atchafalaya River at Simmesport, LA

LOUISIANA30.9825°N, -91.7983°W Updated 12 hr ago

FLOW RATE

282,426cfs

GAUGE HT

22.90ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

282,426cfs 13.4% vs avg

Optimal band: 228,704–309,422 cfs

PERIOD HIGH

293,412cfs

PERIOD LOW

210,880cfs

RUNNABLE

87%

last 30 day in band

Gauge Height

22.90ft

Precipitation History

Your History · Atchafalaya River at Simmesport, LA

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30.9825, -91.7983

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DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC

Site #07381490·USGS

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