USGS · 04135700

SOUTH BRANCH

USGS · 04135700LIVE

SOUTH BRANCH AU SABLE RIVER NEAR LUZERNE, MI

SOUTH BRANCH TOWNSHIP, MI44.6147°N, -84.4556°W Updated 13 hr ago

FLOW RATE

261cfs

AIR TEMP

71°F

WIND

4mph SSW

FISH INDEX

81SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

261cfs 44.2% vs avg

Optimal band: 235–319 cfs

PERIOD HIGH

336cfs

PERIOD LOW

163cfs

RUNNABLE

58%

last 30 day in band

Precipitation History

Precipitation · YTD

Wet

Wetter than normal

2026 to date

23.8in

+45% vs normal

23.79 in of precipitation so far this year, 45% above the 30-year normal of 16.41 in for this point in the season.

YTD Total

23.8in

This year so far

Normal to Date

16.4in

30-yr average

Typical Range

12.8–19.6in

10th–90th pct YTD

Departure

+45%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 3.07" · normal 1.87" (0.9–2.9)

Jan

Feb: 1.73" · normal 1.63" (0.6–2.6)

Feb

Mar: 5.45" · normal 2.05" (0.8–2.9)

Mar

Apr: 5.70" · normal 3.27" (1.7–5.4)

Apr

May: 1.89" · normal 3.28" (2.0–4.6)

May

Jun: 5.41" · normal 3.50" (2.3–4.7)

Jun

Jul: 0.54" (so far)· normal 3.11" (2.2–4.4)

Jul

Aug: normal 3.10" (2.1–4.5)

Aug

Sep: normal 2.85" (1.6–4.6)

Sep

Oct: normal 2.95" (1.3–4.7)

Oct

Nov: normal 2.34" (1.1–3.9)

Nov

Dec: normal 2.01" (0.8–3.0)

Dec

Baseline 1991–2020 · Source: Open-Meteo12:29 PM

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Station Location

44.6147, -84.4556

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DATA · USGS · NOAA · NWSUPDATED 2026-07-08 00:00 UTC

Site #04135700·USGS

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