USGS · 01120790

NATCHAUG RIVER

USGS · 01120790LIVE

NATCHAUG RIVER AT MARCY RD. NEAR CHAPLIN, CT

CHAPLIN, CT41.8162°N, -72.1062°W Updated 8 hr ago

FLOW RATE

16cfs

AIR TEMP

78°F

WIND

7mph WNW

FISH INDEX

69SCORE / 100

GREAT · 4 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

16cfs 44.9% vs avg

Optimal band: 48–66 cfs

PERIOD HIGH

1,189cfs

PERIOD LOW

7cfs

RUNNABLE

21%

last 1 year in band

Precipitation History

Precipitation · YTD

Normal

Near-normal year

2026 to date

23.0in

≈ normal

22.98 in of precipitation so far this year — about average for this point in the season (normal 22.54 in).

YTD Total

23.0in

This year so far

Normal to Date

22.5in

30-yr average

Typical Range

17.6–27.8in

10th–90th pct YTD

Departure

+2%

vs 30-yr normal

By Month

This year

Typical range

Normal

Jan: 3.29" · normal 3.61" (2.2–5.7)

Jan

Feb: 2.21" · normal 3.16" (1.8–5.0)

Feb

Mar: 5.33" · normal 4.29" (1.9–6.3)

Mar

Apr: 3.13" · normal 3.86" (2.0–6.4)

Apr

May: 3.92" · normal 3.28" (2.1–4.4)

May

Jun: 5.05" · normal 4.05" (1.7–6.8)

Jun

Jul: 0.05" (so far)· normal 3.86" (2.0–6.1)

Jul

Aug: normal 4.37" (2.5–7.4)

Aug

Sep: normal 4.05" (1.6–7.4)

Sep

Oct: normal 4.17" (1.2–6.7)

Oct

Nov: normal 3.60" (1.9–5.0)

Nov

Dec: normal 4.33" (2.3–7.1)

Dec

Baseline 1991–2020 · Source: Open-Meteo07:11 AM

Your History · NATCHAUG RIVER AT MARCY RD. NEAR CHAPLIN, CT

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Station Location

41.8162, -72.1062

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DATA · USGS · NOAA · NWSUPDATED 2026-07-03 08:21 UTC

Site #01120790·USGS

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