Waterlands
St. Marys River
USGS · 04181500
ST. MARYS RIVER
USGS · 04181500LIVE

ST. MARYS RIVER AT DECATUR, IN

INDIANA40.8481°N, -84.9377°W Updated 24 min ago
FLOW RATE
87.3cfs
GAUGE HT
3.41ft
Flow Rate Historical Avg
MEDIAN FLOW RATE · 1 DAY
87.3cfs 53.6% vs avg
Optimal band: 78–106 cfs
PERIOD HIGH
96.4cfs
PERIOD LOW
86.3cfs
RUNNABLE
100%
last 1 day in band

Gauge Height

3.41ft
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Station Location

40.8481, -84.9377
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DATA · USGS · NOAA · NWSUPDATED 2026-10-16 15:55 UTC
Site #04181500·USGS

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