St. Mary R nr Int'l Boundary, MT

MONTANA49.0119°N, -113.2992°W Updated 21 min ago

FLOW RATE

196cfs

GAUGE HT

3.74ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

196cfs 11.4% vs avg

Optimal band: 169–229 cfs

PERIOD HIGH

213cfs

PERIOD LOW

193cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

3.74ft

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Your History · St. Mary R nr Int'l Boundary, MT

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49.0119, -113.2992

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DATA · USGS · NOAA · NWSUPDATED 2026-10-16 14:10 UTC

Site #05020500·USGS

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