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Forecast services to continue at Langhorne stream gage during Route 213 bridge construction.  Click here for forecast hydrograph, click here to access temporary USGS observations from a gage 0.55 miles downstream located at Brownsville Rd.

Hydrograph River at a Glance Download Inundation
Mapping
Passaic River at Chatham Stage (ft)Flow (kcfs)Observed: 3.96 ft at 2:45PM Jan 29, 2015Observed: 3.94 ft at 3:00PM Jan 29, 2015Observed: 3.94 ft at 3:15PM Jan 29, 2015Observed: 3.93 ft at 3:30PM Jan 29, 2015Observed: 3.92 ft at 3:45PM Jan 29, 2015Observed: 3.91 ft at 4:00PM Jan 29, 2015Observed: 3.9 ft at 4:15PM Jan 29, 2015Observed: 3.9 ft at 4:30PM Jan 29, 2015Observed: 3.9 ft at 4:45PM Jan 29, 2015Observed: 3.89 ft at 5:00PM Jan 29, 2015Observed: 3.89 ft at 5:15PM Jan 29, 2015Observed: 3.88 ft at 5:30PM Jan 29, 2015Observed: 3.88 ft at 5:45PM Jan 29, 2015Observed: 3.88 ft at 6:00PM Jan 29, 2015Observed: 3.87 ft at 6:15PM Jan 29, 2015Observed: 3.86 ft at 6:30PM Jan 29, 2015Observed: 3.86 ft at 6:45PM Jan 29, 2015Observed: 3.86 ft at 7:00PM Jan 29, 2015Observed: 3.86 ft at 7:15PM Jan 29, 2015Observed: 3.86 ft at 7:30PM Jan 29, 2015Observed: 3.86 ft at 7:45PM Jan 29, 2015Observed: 3.86 ft at 8:00PM Jan 29, 2015Observed: 3.85 ft at 8:15PM Jan 29, 2015Observed: 3.85 ft at 8:30PM Jan 29, 2015Observed: 3.85 ft at 8:45PM Jan 29, 2015Observed: 3.85 ft at 9:00PM Jan 29, 2015Observed: 3.85 ft at 9:15PM Jan 29, 2015Observed: 3.85 ft at 9:30PM Jan 29, 2015Observed: 3.84 ft at 9:45PM Jan 29, 2015Observed: 3.84 ft at 10:00PM Jan 29, 2015Observed: 3.84 ft at 10:15PM Jan 29, 2015Observed: 3.84 ft at 10:30PM Jan 29, 2015Observed: 3.84 ft at 10:45PM Jan 29, 2015Observed: 3.84 ft at 11:00PM Jan 29, 2015Observed: 3.84 ft at 11:15PM Jan 29, 2015Observed: 3.84 ft at 11:30PM Jan 29, 2015Observed: 3.83 ft at 11:45PM Jan 29, 2015Observed: 3.83 ft at 12:00AM Jan 30, 2015Observed: 3.83 ft at 12:15AM Jan 30, 2015Observed: 3.83 ft at 12:30AM Jan 30, 2015Observed: 3.83 ft at 12:45AM Jan 30, 2015Observed: 3.82 ft at 1:00AM Jan 30, 2015Observed: 3.82 ft at 1:15AM Jan 30, 2015Observed: 3.82 ft at 1:30AM Jan 30, 2015Observed: 3.82 ft at 1:45AM Jan 30, 2015Observed: 3.82 ft at 2:00AM Jan 30, 2015Observed: 3.82 ft at 2:15AM Jan 30, 2015Observed: 3.82 ft at 2:30AM Jan 30, 2015Observed: 3.82 ft at 2:45AM Jan 30, 2015Observed: 3.82 ft at 3:00AM Jan 30, 2015Observed: 3.82 ft at 3:15AM Jan 30, 2015Observed: 3.82 ft at 3:30AM Jan 30, 2015Observed: 3.82 ft at 3:45AM Jan 30, 2015Observed: 3.82 ft at 4:00AM Jan 30, 2015Observed: 3.82 ft at 4:15AM Jan 30, 2015Observed: 3.82 ft at 4:30AM Jan 30, 2015Observed: 3.82 ft at 4:45AM Jan 30, 2015Observed: 3.82 ft at 5:00AM Jan 30, 2015Observed: 3.82 ft at 5:15AM Jan 30, 2015Observed: 3.82 ft at 5:30AM Jan 30, 2015Observed: 3.82 ft at 5:45AM Jan 30, 2015Observed: 3.82 ft at 6:00AM Jan 30, 2015Observed: 3.82 ft at 6:15AM Jan 30, 2015Observed: 3.82 ft at 6:30AM Jan 30, 2015Observed: 3.82 ft at 6:45AM Jan 30, 2015Observed: 3.82 ft at 7:00AM Jan 30, 2015Observed: 3.81 ft at 7:15AM Jan 30, 2015Observed: 3.81 ft at 7:30AM Jan 30, 2015Observed: 3.81 ft at 7:45AM Jan 30, 2015Observed: 3.81 ft at 8:00AM Jan 30, 2015Observed: 3.81 ft at 8:15AM Jan 30, 2015Observed: 3.81 ft at 8:30AM Jan 30, 2015Observed: 3.81 ft at 8:45AM Jan 30, 2015Observed: 3.81 ft at 9:00AM Jan 30, 2015Observed: 3.81 ft at 9:15AM Jan 30, 2015Observed: 3.81 ft at 9:30AM Jan 30, 2015Observed: 3.81 ft at 9:45AM Jan 30, 2015Observed: 3.81 ft at 10:00AM Jan 30, 2015Observed: 3.8 ft at 10:15AM Jan 30, 2015Observed: 3.8 ft at 10:30AM Jan 30, 2015Observed: 3.8 ft at 10:45AM Jan 30, 2015Observed: 3.8 ft at 11:00AM Jan 30, 2015Observed: 3.8 ft at 11:15AM Jan 30, 2015Observed: 3.8 ft at 11:30AM Jan 30, 2015Observed: 3.8 ft at 11:45AM Jan 30, 2015Observed: 3.8 ft at 12:00PM Jan 30, 2015Observed: 3.8 ft at 12:15PM Jan 30, 2015Observed: 3.8 ft at 12:30PM Jan 30, 2015Observed: 3.8 ft at 12:45PM Jan 30, 2015Observed: 3.8 ft at 1:00PM Jan 30, 2015Observed: 3.8 ft at 1:15PM Jan 30, 2015Observed: 3.8 ft at 1:30PM Jan 30, 2015Observed: 3.8 ft at 1:45PM Jan 30, 2015Observed: 3.8 ft at 2:00PM Jan 30, 2015Observed: 3.8 ft at 2:15PM Jan 30, 2015Observed: 3.8 ft at 2:30PM Jan 30, 2015Observed: 3.8 ft at 2:45PM Jan 30, 2015Observed: 3.8 ft at 3:00PM Jan 30, 2015Observed: 3.8 ft at 3:15PM Jan 30, 2015Observed: 3.8 ft at 3:30PM Jan 30, 2015Observed: 3.8 ft at 3:45PM Jan 30, 2015Observed: 3.8 ft at 4:00PM Jan 30, 2015Observed: 3.8 ft at 4:15PM Jan 30, 2015Observed: 3.8 ft at 4:30PM Jan 30, 2015Observed: 3.8 ft at 4:45PM Jan 30, 2015Observed: 3.8 ft at 5:00PM Jan 30, 2015Observed: 3.8 ft at 5:15PM Jan 30, 2015Observed: 3.8 ft at 5:30PM Jan 30, 2015Observed: 3.8 ft at 5:45PM Jan 30, 2015Observed: 3.8 ft at 6:00PM Jan 30, 2015Observed: 3.8 ft at 6:15PM Jan 30, 2015Observed: 3.8 ft at 6:30PM Jan 30, 2015Observed: 3.8 ft at 6:45PM Jan 30, 2015Observed: 3.8 ft at 7:00PM Jan 30, 2015Observed: 3.8 ft at 7:15PM Jan 30, 2015Observed: 3.8 ft at 7:30PM Jan 30, 2015Observed: 3.8 ft at 7:45PM Jan 30, 2015Observed: 3.8 ft at 8:00PM Jan 30, 2015Observed: 3.8 ft at 8:15PM Jan 30, 2015Observed: 3.82 ft at 8:30PM Jan 30, 2015Observed: 3.84 ft at 8:45PM Jan 30, 2015Observed: 3.85 ft at 9:00PM Jan 30, 2015Observed: 3.86 ft at 9:15PM Jan 30, 2015Observed: 3.86 ft at 9:30PM Jan 30, 2015Observed: 3.87 ft at 9:45PM Jan 30, 2015Observed: 3.89 ft at 10:00PM Jan 30, 2015Observed: 3.9 ft at 10:15PM Jan 30, 2015Observed: 3.93 ft at 10:30PM Jan 30, 2015Observed: 3.96 ft at 10:45PM Jan 30, 2015Observed: 3.98 ft at 11:00PM Jan 30, 2015Observed: 4.01 ft at 11:15PM Jan 30, 2015Observed: 4.03 ft at 11:30PM Jan 30, 2015Observed: 4.06 ft at 11:45PM Jan 30, 2015Observed: 4.08 ft at 12:00AM Jan 31, 2015Observed: 4.1 ft at 12:15AM Jan 31, 2015Observed: 4.13 ft at 12:30AM Jan 31, 2015Observed: 4.15 ft at 12:45AM Jan 31, 2015Highest Observation: 4.17 ft at 1:00AM Jan 31, 2015Observed: 4.04 ft at 1:15AM Jan 31, 2015Observed: 3.9 ft at 1:30AM Jan 31, 2015Observed: 3.84 ft at 1:45AM Jan 31, 2015Observed: 3.83 ft at 2:00AM Jan 31, 2015Observed: 3.82 ft at 2:15AM Jan 31, 2015Observed: 3.82 ft at 2:30AM Jan 31, 2015Observed: 3.82 ft at 2:45AM Jan 31, 2015Observed: 3.81 ft at 3:00AM Jan 31, 2015Observed: 3.81 ft at 3:15AM Jan 31, 2015Observed: 3.8 ft at 3:30AM Jan 31, 2015Observed: 3.8 ft at 3:45AM Jan 31, 2015Observed: 3.8 ft at 4:00AM Jan 31, 2015Observed: 3.8 ft at 4:15AM Jan 31, 2015Observed: 3.8 ft at 4:30AM Jan 31, 2015Observed: 3.8 ft at 4:45AM Jan 31, 2015Observed: 3.8 ft at 5:00AM Jan 31, 2015Observed: 3.8 ft at 5:15AM Jan 31, 2015Observed: 3.8 ft at 5:30AM Jan 31, 2015Observed: 3.81 ft at 5:45AM Jan 31, 2015Observed: 3.81 ft at 6:00AM Jan 31, 2015Observed: 3.82 ft at 6:15AM Jan 31, 2015Observed: 3.82 ft at 6:30AM Jan 31, 2015Observed: 3.83 ft at 6:45AM Jan 31, 2015Observed: 3.84 ft at 7:00AM Jan 31, 2015Observed: 3.86 ft at 7:15AM Jan 31, 2015Observed: 3.86 ft at 7:30AM Jan 31, 2015Observed: 3.88 ft at 7:45AM Jan 31, 2015Observed: 3.89 ft at 8:00AM Jan 31, 2015Observed: 3.9 ft at 8:15AM Jan 31, 2015Observed: 3.91 ft at 8:30AM Jan 31, 2015Observed: 3.91 ft at 8:45AM Jan 31, 2015Observed: 3.92 ft at 9:00AM Jan 31, 2015Observed: 3.94 ft at 9:15AM Jan 31, 2015Observed: 3.94 ft at 9:30AM Jan 31, 2015Observed: 3.94 ft at 9:45AM Jan 31, 2015Observed: 3.94 ft at 10:00AM Jan 31, 2015Observed: 3.95 ft at 10:15AM Jan 31, 2015Observed: 3.95 ft at 10:30AM Jan 31, 2015Observed: 3.91 ft at 10:45AM Jan 31, 2015Observed: 3.82 ft at 11:00AM Jan 31, 2015Observed: 3.76 ft at 11:15AM Jan 31, 2015Observed: 3.77 ft at 11:30AM Jan 31, 2015Observed: 3.78 ft at 11:45AM Jan 31, 2015Observed: 3.8 ft at 12:00PM Jan 31, 2015Observed: 3.81 ft at 12:15PM Jan 31, 2015Observed: 3.81 ft at 12:30PM Jan 31, 2015Observed: 3.82 ft at 12:45PM Jan 31, 2015Observed: 3.85 ft at 1:00PM Jan 31, 2015Observed: 3.88 ft at 1:15PM Jan 31, 2015Observed: 3.9 ft at 1:30PM Jan 31, 2015Observed: 3.92 ft at 1:45PM Jan 31, 2015Observed: 3.92 ft at 2:00PM Jan 31, 2015Observed: 3.92 ft at 2:15PM Jan 31, 2015Observed: 3.92 ft at 2:30PM Jan 31, 2015Observed: 3.92 ft at 2:45PM Jan 31, 2015Observed: 3.92 ft at 3:00PM Jan 31, 2015Observed: 3.92 ft at 3:15PM Jan 31, 2015Observed: 3.91 ft at 3:30PM Jan 31, 2015Observed: 3.9 ft at 3:45PM Jan 31, 2015Observed: 3.89 ft at 4:00PM Jan 31, 2015Observed: 3.88 ft at 4:15PM Jan 31, 2015Observed: 3.88 ft at 4:30PM Jan 31, 2015Observed: 3.87 ft at 4:45PM Jan 31, 2015Observed: 3.86 ft at 5:00PM Jan 31, 2015Observed: 3.86 ft at 5:15PM Jan 31, 2015Observed: 3.86 ft at 5:30PM Jan 31, 2015Observed: 3.87 ft at 5:45PM Jan 31, 2015Observed: 3.86 ft at 6:00PM Jan 31, 2015Observed: 3.87 ft at 6:15PM Jan 31, 2015Observed: 3.88 ft at 6:30PM Jan 31, 2015Observed: 3.88 ft at 6:45PM Jan 31, 2015Observed: 3.88 ft at 7:00PM Jan 31, 2015Observed: 3.88 ft at 7:15PM Jan 31, 2015Observed: 3.89 ft at 7:30PM Jan 31, 2015Observed: 3.9 ft at 7:45PM Jan 31, 2015Observed: 3.9 ft at 8:00PM Jan 31, 2015Observed: 3.9 ft at 8:15PM Jan 31, 2015Observed: 3.91 ft at 8:30PM Jan 31, 2015Observed: 3.92 ft at 8:45PM Jan 31, 2015Observed: 3.92 ft at 9:00PM Jan 31, 2015Observed: 3.92 ft at 9:15PM Jan 31, 2015Observed: 3.93 ft at 9:30PM Jan 31, 2015Observed: 3.94 ft at 9:45PM Jan 31, 2015Observed: 3.94 ft at 10:00PM Jan 31, 2015Observed: 3.94 ft at 10:15PM Jan 31, 2015Observed: 3.95 ft at 10:30PM Jan 31, 2015Observed: 3.95 ft at 10:45PM Jan 31, 2015Observed: 3.96 ft at 11:00PM Jan 31, 2015Observed: 3.96 ft at 11:15PM Jan 31, 2015Observed: 3.97 ft at 11:30PM Jan 31, 2015Observed: 3.97 ft at 11:45PM Jan 31, 2015Observed: 3.98 ft at 12:00AM Feb 01, 2015Observed: 3.98 ft at 12:15AM Feb 01, 2015Observed: 3.99 ft at 12:30AM Feb 01, 2015Observed: 3.99 ft at 12:45AM Feb 01, 2015Observed: 4 ft at 1:00AM Feb 01, 2015Observed: 4 ft at 1:15AM Feb 01, 2015Observed: 4.01 ft at 1:30AM Feb 01, 2015Observed: 4.01 ft at 1:45AM Feb 01, 2015Observed: 4.02 ft at 2:00AM Feb 01, 2015Observed: 4.02 ft at 2:15AM Feb 01, 2015Observed: 4.02 ft at 2:30AM Feb 01, 2015Observed: 4.02 ft at 2:45AM Feb 01, 2015Observed: 4.03 ft at 3:00AM Feb 01, 2015Observed: 4.03 ft at 3:15AM Feb 01, 2015Observed: 4.04 ft at 3:30AM Feb 01, 2015Observed: 4.04 ft at 3:45AM Feb 01, 2015Observed: 4.04 ft at 4:00AM Feb 01, 2015Observed: 4.04 ft at 4:15AM Feb 01, 2015Observed: 4.05 ft at 4:30AM Feb 01, 2015Observed: 4.05 ft at 4:45AM Feb 01, 2015Observed: 4.06 ft at 5:00AM Feb 01, 2015Observed: 4.06 ft at 5:15AM Feb 01, 2015Observed: 4.06 ft at 5:30AM Feb 01, 2015Observed: 4.06 ft at 5:45AM Feb 01, 2015Observed: 4.07 ft at 6:00AM Feb 01, 2015Observed: 4.07 ft at 6:15AM Feb 01, 2015Observed: 4.07 ft at 6:30AM Feb 01, 2015Observed: 4.08 ft at 6:45AM Feb 01, 2015Observed: 4.08 ft at 7:00AM Feb 01, 2015Observed: 4.08 ft at 7:15AM Feb 01, 2015Observed: 4.08 ft at 7:30AM Feb 01, 2015Observed: 4.08 ft at 7:45AM Feb 01, 2015Observed: 4.09 ft at 8:00AM Feb 01, 2015Observed: 4.09 ft at 8:15AM Feb 01, 2015Observed: 4.08 ft at 8:30AM Feb 01, 2015Observed: 4.08 ft at 8:45AM Feb 01, 2015Observed: 4.08 ft at 9:00AM Feb 01, 2015Observed: 4.06 ft at 9:15AM Feb 01, 2015Observed: 4.06 ft at 9:30AM Feb 01, 2015Observed: 4.06 ft at 9:45AM Feb 01, 2015Observed: 4.08 ft at 10:00AM Feb 01, 2015Observed: 4.05 ft at 10:15AM Feb 01, 2015Observed: 4.01 ft at 10:30AM Feb 01, 2015Observed: 3.88 ft at 10:45AM Feb 01, 2015Observed: 3.82 ft at 11:00AM Feb 01, 2015Observed: 3.81 ft at 11:15AM Feb 01, 2015Observed: 3.81 ft at 11:30AM Feb 01, 2015Observed: 3.81 ft at 11:45AM Feb 01, 2015Observed: 3.81 ft at 12:00PM Feb 01, 2015Observed: 3.81 ft at 12:15PM Feb 01, 2015Observed: 3.8 ft at 12:30PM Feb 01, 2015Observed: 3.79 ft at 12:45PM Feb 01, 2015Observed: 3.78 ft at 1:00PM Feb 01, 2015Observed: 3.77 ft at 1:15PM Feb 01, 2015Forecast: 3.8 ft 7:00PM Feb 01, 2015Forecast: 3.9 ft 1:00AM Feb 02, 2015Forecast: 4 ft 7:00AM Feb 02, 2015Highest Forecast: 4.1 ft 1:00PM Feb 02, 2015Highest Forecast: 4.1 ft 7:00PM Feb 02, 2015Highest Forecast: 4.1 ft 1:00AM Feb 03, 2015Highest Forecast: 4.1 ft 7:00AM Feb 03, 2015Highest Forecast: 4.1 ft 1:00PM Feb 03, 2015Highest Forecast: 4.1 ft 7:00PM Feb 03, 2015Highest Forecast: 4.1 ft 1:00AM Feb 04, 2015Highest Forecast: 4.1 ft 7:00AM Feb 04, 2015USGS--Water Resources of the United StatesCAMN4(plotting HGIRG) Graph Created (2:32PM Feb 1, 2015)ObservedForecast (issued 10:18AM Feb 1)Latest observed value: 3.77 ft at 1:15 PM EST 1-Feb-2015. Flood Stage is 6 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Passaic River at Chatham are issued routinely year-round.
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Upstream Gauge - near Millington Upstream Gauge Downstream Gauge Downstream Gauge - at Pine Brook
Flood Categories (in feet)
Major Flood Stage: 10
Moderate Flood Stage: 8
Flood Stage: 6
Action Stage: 5.5
Low Stage (in feet): 0

Historic Crests
(1) 9.36 ft on 08/02/1973
(2) 8.30 ft on 01/09/1905
(3) 8.16 ft on 08/28/1971
(4) 8.14 ft on 09/27/1975
(5) 8.00 ft on 03/18/1907
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 6.46 ft on 05/01/2014
(2) 6.25 ft on 09/09/2011
(3) 7.76 ft on 08/29/2011
(4) 6.38 ft on 04/17/2011
(5) 6.41 ft on 03/11/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 3.25 ft on 10/11/1983

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
11 Flooding begins between University Avenue and Route 24, north of Main Street.
10 Charwood and Brook Roads begin to flood. Passaic Street begins to flood near the intersection of Osborne Avenue. Edward Court begins to flood.
9 Business parking lots between Chatham Road and the Passaic River flood.
8 Businesses along John F. Kennedy Parkway, west of the Morris Turnpike, begin to flood.
6.5 The Central and Bridge Avenue bridges in Chatham Township are subject to closures. Edgewood Road is closed.
6 Portions of the Shepard Kolluck Park in Chatham floods. River Road by Henry Drive is subject to closures.
5.5 Open areas adjacent to the Passaic River flood in New Providence, Chatham Township, and Berkley Heights.
About This Location Collapse

Latitude: 40.726111° N, Longitude: 74.389722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 6 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 193.51 ft 199.51 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

Additional Information Collapse
During winter months, cold and ice may result in inaccurate real-time stream stage and streamflow data. Adjustments or deletions of this data can only be done after detailed analysis.
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Philadelphia/Mount Holly Weather Forecast Office
732 Woodlane Road
Mount Holly, NJ 08060-9615
(609) 261-6600
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Page last modified: 20-Nov-2014 2:01 AM
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