Big Lost River below Mackay Reservoir, near Mackay, ID

CUSTER COUNTY, ID43.9392°N, -113.6483°W Updated 12 hr ago

FLOW RATE

439cfs

GAUGE HT

2.65ft

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

439cfs 34.0% vs avg

Optimal band: 74–100 cfs

PERIOD HIGH

714cfs

PERIOD LOW

45cfs

RUNNABLE

last 1 year in band

Gauge Height

2.65ft

Precipitation History

Your History · Big Lost River below Mackay Reservoir, near Mackay, ID

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43.9392, -113.6483

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

Site #13127000·USGS

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