USGS · 13032500

SOUTH FORK SNAKE RIVER

USGS · 13032500LIVE

Snake River near Irwin, ID (South Fork, below Palisades Dam)

BONNEVILLE COUNTY, ID43.3508°N, -111.2189°W Updated 9 hr ago

FLOW RATE

14,185cfs

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

14,185cfs 15.8% vs avg

Optimal band: 4,092–5,536 cfs

PERIOD HIGH

14,185cfs

PERIOD LOW

867cfs

RUNNABLE

last 1 year in band

Precipitation History

Precipitation · YTD

Dry

Drier than normal

2026 to date

12.4in

-29% vs normal

12.4 in of precipitation so far this year, 29% below the 30-year normal of 17.56 in for this point in the season.

YTD Total

12.4in

This year so far

Normal to Date

17.6in

30-yr average

Typical Range

12.0–23.7in

10th–90th pct YTD

Departure

-29%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.86" · normal 3.19" (1.8–5.4)

Jan

Feb: 1.47" · normal 2.72" (1.6–4.5)

Feb

Mar: 1.38" · normal 2.88" (1.5–4.5)

Mar

Apr: 3.29" · normal 2.83" (1.9–3.9)

Apr

May: 2.10" · normal 3.14" (1.3–5.1)

May

Jun: 1.74" · normal 2.51" (0.7–3.9)

Jun

Jul: 0.55" (so far)· normal 1.06" (0.3–1.9)

Jul

Aug: normal 1.14" (0.3–1.8)

Aug

Sep: normal 1.93" (0.8–3.3)

Sep

Oct: normal 2.31" (1.2–3.5)

Oct

Nov: normal 2.84" (1.3–4.4)

Nov

Dec: normal 3.30" (1.5–5.0)

Dec

Baseline 1991–2020 · Source: Open-Meteo09:45 AM

Your History · Snake River near Irwin, ID (South Fork, below Palisades Dam)

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Station Location

43.3508, -111.2189

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

Site #13032500·USGS

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