Ruby River above Ruby Reservoir near Alder, MT

MADISON COUNTY, MT45.1923°N, -112.1428°W Updated 20 hr ago

FLOW RATE

106cfs

GAUGE HT

2.94ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

106cfs 11.2% vs avg

Optimal band: 100–136 cfs

PERIOD HIGH

363cfs

PERIOD LOW

70cfs

RUNNABLE

54%

last 1 year in band

Gauge Height

2.94ft

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45.1923, -112.1428

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DATA · USGS · NOAA · NWSUPDATED 2026-10-16 00:00 UTC

Site #06019500·USGS

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