Big Spring Cr at R&B Trading Post nr Lewistown MT

FERGUS COUNTY, MT47.0878°N, -109.4575°W Updated 12 hr ago

FLOW RATE

153cfs

GAUGE HT

3.70ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

153cfs 0.7% vs avg

Optimal band: 135–183 cfs

PERIOD HIGH

326cfs

PERIOD LOW

130cfs

RUNNABLE

90%

last 1 year in band

Gauge Height

3.70ft

Precipitation History

Your History · Big Spring Cr at R&B Trading Post nr Lewistown MT

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47.0878, -109.4575

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

Site #06111800·USGS

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