Boulder River below Natural Bridge, MT

SWEET GRASS COUNTY, MT45.5554°N, -110.2007°W Updated 1 d ago

FLOW RATE

103cfs

GAUGE HT

3.68ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 7 DAY

103cfs

Optimal band: 88–118 cfs

PERIOD HIGH

126cfs

PERIOD LOW

91cfs

RUNNABLE

86%

last 7 day in band

Gauge Height

3.68ft

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45.5554, -110.2007

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DATA · MT DNRC · NOAA · NWSUPDATED 2026-09-22 00:00 UTC

Site #43BJ 03800·MT DNRC

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