USGS · 06038500

MADISON RIVER

USGS · 06038500LIVE

Madison River bl Hebgen Lake nr Grayling MT

GALLATIN COUNTY, MT44.8664°N, -111.3388°W Updated 1 hr ago

FLOW RATE

965cfs

GAUGE HT

1.82ft

WATER TEMP

59°F

AIR TEMP

64°F

WIND

8mph SE

FISH INDEX

75SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 DAY

965cfs 12.9% vs avg

Optimal band: 812–1,098 cfs

PERIOD HIGH

965cfs

PERIOD LOW

883cfs

RUNNABLE

100%

last 1 day in band

Gauge Height

1.82ft

Water Temperature

58.6°F

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

14.2in

≈ normal

14.23 in of precipitation so far this year — about average for this point in the season (normal 15.71 in).

YTD Total

14.2in

This year so far

Normal to Date

15.7in

30-yr average

Typical Range

11.6–19.1in

10th–90th pct YTD

Departure

-9%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.60" · normal 2.10" (1.1–3.1)

Jan

Feb: 2.10" · normal 1.99" (0.8–3.1)

Feb

Mar: 1.06" · normal 2.52" (1.1–3.8)

Mar

Apr: 3.45" · normal 2.86" (1.8–3.9)

Apr

May: 1.44" · normal 2.93" (1.6–4.2)

May

Jun: 4.32" · normal 2.76" (1.2–4.9)

Jun

Jul: 0.27" (so far)· normal 1.35" (0.6–2.3)

Jul

Aug: normal 1.24" (0.4–2.5)

Aug

Sep: normal 1.71" (0.6–2.6)

Sep

Oct: normal 2.22" (1.4–3.4)

Oct

Nov: normal 2.27" (1.1–3.5)

Nov

Dec: normal 2.40" (1.2–3.4)

Dec

Baseline 1991–2020 · Source: Open-Meteo05:11 UTC

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Station Location

44.8664, -111.3388

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DATA · USGS · NOAA · NWSUPDATED 2026-07-12 05:45 UTC

Site #06038500·USGS

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