USGS · 04127885

ST. MARYS RIVER

USGS · 04127885LIVE

ST. MARYS RIVER AT SAULT STE. MARIE, ONTARIO

MICHIGAN46.4983°N, -84.3153°W Updated 6 hr ago

FLOW RATE

84,969cfs

AIR TEMP

64°F

WIND

2mph NNW

FISH INDEX

88SCORE / 100

EPIC · 5 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

84,969cfs 10.3% vs avg

Optimal band: 65,917–89,181 cfs

PERIOD HIGH

85,062cfs

PERIOD LOW

72,149cfs

RUNNABLE

100%

last 30 day in band

Precipitation History

Precipitation · YTD

Wet

Wetter than normal

2026 to date

21.2in

+42% vs normal

21.17 in of precipitation so far this year, 42% above the 30-year normal of 14.87 in for this point in the season.

YTD Total

21.2in

This year so far

Normal to Date

14.9in

30-yr average

Typical Range

11.5–19.4in

10th–90th pct YTD

Departure

+42%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 3.48" · normal 1.88" (0.9–2.9)

Jan

Feb: 2.03" · normal 1.43" (0.6–2.5)

Feb

Mar: 4.13" · normal 1.85" (0.8–3.2)

Mar

Apr: 4.78" · normal 2.65" (1.3–3.9)

Apr

May: 2.03" · normal 2.84" (1.4–4.2)

May

Jun: 3.94" · normal 3.22" (1.6–5.5)

Jun

Jul: 0.80" (so far)· normal 4.06" (2.3–5.8)

Jul

Aug: normal 3.71" (2.3–5.5)

Aug

Sep: normal 4.18" (2.7–5.8)

Sep

Oct: normal 4.13" (2.5–6.1)

Oct

Nov: normal 2.73" (1.6–3.9)

Nov

Dec: normal 2.27" (1.1–3.4)

Dec

Baseline 1991–2020 · Source: Open-Meteo12:35 AM

Your History · ST. MARYS RIVER AT SAULT STE. MARIE, ONTARIO

Track your history

Sign in to track your sessions at ST. MARYS RIVER AT SAULT STE. MARIE, ONTARIO — best days, monthly trends, and time on the water.

Station Location

46.4983, -84.3153

Loading map…

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

Site #04127885·USGS

Create a free account to save favorites, set flow alerts, and track conditions