USGS · 04181120

ST. MARYS RIVER

USGS · 04181120LIVE

ST. MARYS RIVER AT PLEASANT MILLS, IN

ADAMS COUNTY, IN40.7794°N, -84.8424°W Updated 1 hr ago

FLOW RATE

52cfs

AIR TEMP

76°F

WIND

5mph WNW

FISH INDEX

75SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 30 DAY

52cfs 4.1% vs avg

Optimal band: 123–167 cfs

PERIOD HIGH

1,428cfs

PERIOD LOW

52cfs

RUNNABLE

last 30 day in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

21.9in

≈ normal

21.93 in of precipitation so far this year — about average for this point in the season (normal 21.85 in).

YTD Total

21.9in

This year so far

Normal to Date

21.9in

30-yr average

Typical Range

17.1–26.2in

10th–90th pct YTD

Departure

+0%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 1.66" · normal 2.90" (1.3–4.7)

Jan

Feb: 1.00" · normal 2.41" (1.3–3.8)

Feb

Mar: 4.00" · normal 3.34" (2.1–4.7)

Mar

Apr: 6.43" · normal 4.22" (2.4–6.3)

Apr

May: 3.86" · normal 4.17" (2.4–6.1)

May

Jun: 4.05" · normal 4.01" (1.8–6.0)

Jun

Jul: 0.94" (so far)· normal 3.54" (2.1–5.4)

Jul

Aug: normal 3.38" (1.7–4.7)

Aug

Sep: normal 2.66" (1.0–4.5)

Sep

Oct: normal 2.88" (1.4–4.4)

Oct

Nov: normal 3.04" (1.4–4.8)

Nov

Dec: normal 2.80" (1.5–4.4)

Dec

Baseline 1991–2020 · Source: Open-Meteo01:34 AM

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Station Location

40.7794, -84.8424

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

Site #04181120·USGS

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