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River NY NJ

Mahwah River

New York • 41.1411, -74.1161
Hydrography profile Updated Dec 27, 2025
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USGS and NOAA data is for informational purposes. Source notes
Length
12 mi
19 km
Elevation
531′ → 259′
271 ft drop
Stream Order
4
Medium River
Slope
0.45%
23.5 ft/mi
Drainage
25 mi²
65 km²
Avg Flow
48 cfs
0.9 mph velocity
Path to Mouth
98 mi
157 km to ocean
Classification
Headwater
Source Stream
Elevation Profile
Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

EPA WQP MyWaterway
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Data from USGS & NOAA for informational purposes only. Read source and safety notes
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Water Level Gauges on Mahwah River

There are 1 USGS water level monitoring stations on Mahwah River providing real-time flow and stage data.