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Whippany River in New Jersey

River18.7 mi

Around here

Around Whippany River

Great Swamp National Wildlife Refuge8 mi5 mi

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

About this river

Whippany River is an 18.7 mile river. Streamflow is measured at the USGS gauge Whippany River near Morristown NJ (site 01381400). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1995 to 2023

Whippany River typically runs highest in March, at a median 32 cfs, and lowest in September, at 6.8 cfs. The highest flow on record for any single day is 1,460 cfs, in 2011.

Show the numbers
Typical flow by month at Whippany River near Morristown NJ, in cfs
MonthTypical (cfs)Usual range (cfs)
January2013 to 37
February2315 to 35
March3220 to 44
April2819 to 43
May2316 to 33
June1511 to 24
July9.56.9 to 15
August8.25.0 to 12
September6.84.7 to 12
October8.46.3 to 16
November127.5 to 23
December189.5 to 40

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 28 years of record. Statistics published by the US Geological Survey for Whippany River near Morristown NJ (site 01381400). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

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