❄️Streamflow data may be affected by ice during winter months. For more details, see <a href="https://tinyurl.com/ysth3tn8">How Does Ice in Rivers and Streams Affect USGS Streamflow Data?</a>

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Available data

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Continuous data

2 data types available - data from 1981-10-01 to 2026-08-04

Daily data

3 data types available - data from 1903-03-01 to 2026-08-04

Field measurements

2 data types available - data from 1975-09-27 to 2026-07-07

Discrete sample data

384 Observed properties (data types) available - with data from 1960-03-02 to 2025-09-22

384 Sampling activities

Statistical tables for select daily data types

3 data types available - data from 1903-03-01 to 2026-08-04

Location details and information

Available location images

Passaic River near Chatham

Passaic River near Chatham, NJ

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Operated in cooperation with:

New Jersey Department of Environmental Protection

US Army Corps of Engineers - New York District

USGS - Federal Priority Streamgages

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	01379500	n/a
Location name	Passaic River near Chatham NJ	n/a
Site type	Stream	ST
Decimal latitude (WGS84)	40.7261111111111	n/a
Decimal longitude (WGS84)	-74.3897222222222	n/a
Latitude-longitude method	Interpolated from MAP.	M
Latitude-longitude accuracy	Accurate to + or - 3 sec (SPS GPS).	R
District	New Jersey	34
State	New Jersey	34
County	Morris County	027
Country	United States of America	n/a
Altitude of gage/land surface	193.51 feet	n/a
Method altitude determined	Level or other surveyed method.	L
Altitude accuracy	0.01 feet	n/a
Altitude datum	National Geodetic Vertical Datum of 1929	NGVD29
Subbasin hydrologic unit	Hackensack-Passaic	02030103
Drainage basin		n/a
Date of first construction		n/a
Drainage area	100 square miles	n/a
Contributing drainage area	100 square miles	n/a
Time zone abbreviation	EST	n/a
Site honors Daylight Saving Time	Y	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a

Monitoring location Passaic River near Chatham NJ - USGS-01379500