St. Mary R nr Int'l Boundary, MT

CARDSTON COUNTY, AB49.0119°N, -113.2992°W Updated 47 min ago

FLOW RATE

1,550cfs

GAUGE HT

5.56ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

1,550cfs 21.9% vs avg

Optimal band: 1,479–2,001 cfs

PERIOD HIGH

1,960cfs

PERIOD LOW

1,510cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

5.56ft

Precipitation History

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 2026-07-07 23:10 UTC

Site #05020500·USGS

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