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Bridgeport Harbor Marina

Naugatuck River near Bridgeport, CT

River40.0 mi
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Around here

Around Naugatuck River

Gentile's Campground2.6 miHancock Brook Lake2.3 mi10 mi

Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US

About this river

Naugatuck River is a 40.0 mile river near Bridgeport Harbor Marina in Connecticut. Streamflow is measured at the USGS gauge Naugatuck River at Thomaston, CT (site 01206900). The National Hydrography Dataset places it at stream order 5. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1961 to 2026

Naugatuck River typically runs highest in March, at a median 264 cfs, and lowest in September, at 36 cfs. The highest flow on record for any single day is 3,550 cfs, in 1979.

Show the numbers
Typical flow by month at Naugatuck River at Thomaston, CT, in cfs
MonthTypical (cfs)Usual range (cfs)
January152102 to 246
February15499 to 235
March264177 to 425
April256166 to 418
May152106 to 254
June7347 to 161
July4427 to 80
August3621 to 72
September3620 to 61
October6134 to 139
November11469 to 227
December16697 to 278

Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 66 years of record. Statistics published by the US Geological Survey for Naugatuck River at Thomaston, CT (site 01206900). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

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