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Lake Hopatcong Adventure Company

Pequannock River near Jefferson, NJ

River25.7 mi
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Around here

Around Pequannock River

5 mi

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

About this river

Pequannock River is a 25.7 mile river near Lake Hopatcong Adventure Company in New Jersey. Streamflow is measured at the USGS gauge Pequannock River at Macopin Intake Dam NJ (site 01382500). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

1923 to 2026

Pequannock River typically runs highest in April, at a median 73 cfs, and lowest in September, at 1.6 cfs. The highest flow on record for any single day is 3,270 cfs, in 2011.

Show the numbers
Typical flow by month at Pequannock River at Macopin Intake Dam NJ, in cfs
MonthTypical (cfs)Usual range (cfs)
January162.1 to 68
February183.2 to 77
March7211 to 167
April7316 to 200
May286.3 to 95
June5.30.0 to 19
July2.10.0 to 9.2
August1.80.0 to 8.4
September1.60.0 to 8.0
October2.80.0 to 11
November7.80.0 to 28
December111.3 to 50

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 101 years of record. Statistics published by the US Geological Survey for Pequannock River at Macopin Intake Dam NJ (site 01382500). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

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