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A new USGS gauge is being installed on the new Route 213 Bridge near Langhorne.  During the gage checkout period, continue to 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: 3.83 ft at 5:45AM May 21, 2017Observed: 3.82 ft at 6:00AM May 21, 2017Observed: 3.82 ft at 6:15AM May 21, 2017Observed: 3.82 ft at 6:30AM May 21, 2017Observed: 3.82 ft at 6:45AM May 21, 2017Observed: 3.82 ft at 7:00AM May 21, 2017Observed: 3.82 ft at 7:15AM May 21, 2017Observed: 3.82 ft at 7:30AM May 21, 2017Observed: 3.82 ft at 7:45AM May 21, 2017Observed: 3.82 ft at 8:00AM May 21, 2017Observed: 3.82 ft at 8:15AM May 21, 2017Observed: 3.82 ft at 8:30AM May 21, 2017Observed: 3.82 ft at 8:45AM May 21, 2017Observed: 3.81 ft at 9:00AM May 21, 2017Observed: 3.81 ft at 9:15AM May 21, 2017Observed: 3.81 ft at 9:30AM May 21, 2017Observed: 3.81 ft at 9:45AM May 21, 2017Observed: 3.81 ft at 10:00AM May 21, 2017Observed: 3.81 ft at 10:15AM May 21, 2017Observed: 3.81 ft at 10:30AM May 21, 2017Observed: 3.8 ft at 10:45AM May 21, 2017Observed: 3.8 ft at 11:00AM May 21, 2017Observed: 3.8 ft at 11:15AM May 21, 2017Observed: 3.8 ft at 11:30AM May 21, 2017Observed: 3.8 ft at 11:45AM May 21, 2017Observed: 3.8 ft at 12:00PM May 21, 2017Observed: 3.8 ft at 12:15PM May 21, 2017Observed: 3.8 ft at 12:30PM May 21, 2017Observed: 3.8 ft at 12:45PM May 21, 2017Observed: 3.8 ft at 1:00PM May 21, 2017Observed: 3.8 ft at 1:15PM May 21, 2017Observed: 3.79 ft at 1:30PM May 21, 2017Observed: 3.79 ft at 1:45PM May 21, 2017Observed: 3.79 ft at 2:00PM May 21, 2017Observed: 3.79 ft at 2:15PM May 21, 2017Observed: 3.79 ft at 2:30PM May 21, 2017Observed: 3.79 ft at 2:45PM May 21, 2017Observed: 3.78 ft at 3:00PM May 21, 2017Observed: 3.78 ft at 3:15PM May 21, 2017Observed: 3.78 ft at 3:30PM May 21, 2017Observed: 3.78 ft at 3:45PM May 21, 2017Observed: 3.78 ft at 4:00PM May 21, 2017Observed: 3.78 ft at 4:15PM May 21, 2017Observed: 3.78 ft at 4:30PM May 21, 2017Observed: 3.78 ft at 4:45PM May 21, 2017Observed: 3.78 ft at 5:00PM May 21, 2017Observed: 3.78 ft at 5:15PM May 21, 2017Observed: 3.78 ft at 5:30PM May 21, 2017Observed: 3.78 ft at 5:45PM May 21, 2017Observed: 3.78 ft at 6:00PM May 21, 2017Observed: 3.78 ft at 6:15PM May 21, 2017Observed: 3.77 ft at 6:30PM May 21, 2017Observed: 3.77 ft at 6:45PM May 21, 2017Observed: 3.77 ft at 7:00PM May 21, 2017Observed: 3.77 ft at 7:15PM May 21, 2017Observed: 3.77 ft at 7:30PM May 21, 2017Observed: 3.77 ft at 7:45PM May 21, 2017Observed: 3.77 ft at 8:00PM May 21, 2017Observed: 3.76 ft at 8:15PM May 21, 2017Observed: 3.76 ft at 8:30PM May 21, 2017Observed: 3.76 ft at 8:45PM May 21, 2017Observed: 3.76 ft at 9:00PM May 21, 2017Observed: 3.76 ft at 9:15PM May 21, 2017Observed: 3.76 ft at 9:30PM May 21, 2017Observed: 3.76 ft at 9:45PM May 21, 2017Observed: 3.76 ft at 10:00PM May 21, 2017Observed: 3.76 ft at 10:15PM May 21, 2017Observed: 3.76 ft at 10:30PM May 21, 2017Observed: 3.76 ft at 10:45PM May 21, 2017Observed: 3.75 ft at 11:00PM May 21, 2017Observed: 3.75 ft at 11:15PM May 21, 2017Observed: 3.75 ft at 11:30PM May 21, 2017Observed: 3.75 ft at 11:45PM May 21, 2017Observed: 3.75 ft at 12:00AM May 22, 2017Observed: 3.75 ft at 12:15AM May 22, 2017Observed: 3.75 ft at 12:30AM May 22, 2017Observed: 3.74 ft at 12:45AM May 22, 2017Observed: 3.74 ft at 1:00AM May 22, 2017Observed: 3.74 ft at 1:15AM May 22, 2017Observed: 3.74 ft at 1:30AM May 22, 2017Observed: 3.74 ft at 1:45AM May 22, 2017Observed: 3.74 ft at 2:00AM May 22, 2017Observed: 3.74 ft at 2:15AM May 22, 2017Observed: 3.74 ft at 2:30AM May 22, 2017Observed: 3.74 ft at 2:45AM May 22, 2017Observed: 3.74 ft at 3:00AM May 22, 2017Observed: 3.74 ft at 3:15AM May 22, 2017Observed: 3.74 ft at 3:30AM May 22, 2017Observed: 3.74 ft at 3:45AM May 22, 2017Observed: 3.74 ft at 4:00AM May 22, 2017Observed: 3.74 ft at 4:15AM May 22, 2017Observed: 3.74 ft at 4:30AM May 22, 2017Observed: 3.74 ft at 4:45AM May 22, 2017Observed: 3.74 ft at 5:00AM May 22, 2017Observed: 3.74 ft at 5:15AM May 22, 2017Observed: 3.74 ft at 5:30AM May 22, 2017Observed: 3.74 ft at 5:45AM May 22, 2017Observed: 3.74 ft at 6:00AM May 22, 2017Observed: 3.74 ft at 6:15AM May 22, 2017Observed: 3.74 ft at 6:30AM May 22, 2017Observed: 3.74 ft at 6:45AM May 22, 2017Observed: 3.74 ft at 7:00AM May 22, 2017Observed: 3.74 ft at 7:15AM May 22, 2017Observed: 3.74 ft at 7:30AM May 22, 2017Observed: 3.74 ft at 7:45AM May 22, 2017Observed: 3.74 ft at 8:00AM May 22, 2017Observed: 3.74 ft at 8:15AM May 22, 2017Observed: 3.74 ft at 8:30AM May 22, 2017Observed: 3.74 ft at 8:45AM May 22, 2017Observed: 3.74 ft at 9:00AM May 22, 2017Observed: 3.74 ft at 9:15AM May 22, 2017Observed: 3.74 ft at 9:30AM May 22, 2017Observed: 3.74 ft at 9:45AM May 22, 2017Observed: 3.74 ft at 10:00AM May 22, 2017Observed: 3.74 ft at 10:15AM May 22, 2017Observed: 3.74 ft at 10:30AM May 22, 2017Observed: 3.74 ft at 10:45AM May 22, 2017Observed: 3.74 ft at 11:00AM May 22, 2017Observed: 3.74 ft at 11:15AM May 22, 2017Observed: 3.74 ft at 11:30AM May 22, 2017Observed: 3.74 ft at 11:45AM May 22, 2017Observed: 3.75 ft at 12:00PM May 22, 2017Observed: 3.75 ft at 12:15PM May 22, 2017Observed: 3.76 ft at 12:30PM May 22, 2017Observed: 3.76 ft at 12:45PM May 22, 2017Observed: 3.77 ft at 1:00PM May 22, 2017Observed: 3.77 ft at 1:15PM May 22, 2017Observed: 3.78 ft at 1:30PM May 22, 2017Observed: 3.78 ft at 1:45PM May 22, 2017Observed: 3.78 ft at 2:00PM May 22, 2017Observed: 3.78 ft at 2:15PM May 22, 2017Observed: 3.79 ft at 2:30PM May 22, 2017Observed: 3.8 ft at 2:45PM May 22, 2017Observed: 3.8 ft at 3:00PM May 22, 2017Observed: 3.8 ft at 3:15PM May 22, 2017Observed: 3.81 ft at 3:30PM May 22, 2017Observed: 3.82 ft at 3:45PM May 22, 2017Observed: 3.84 ft at 4:00PM May 22, 2017Observed: 3.85 ft at 4:15PM May 22, 2017Observed: 3.86 ft at 4:30PM May 22, 2017Observed: 3.88 ft at 4:45PM May 22, 2017Observed: 3.89 ft at 5:00PM May 22, 2017Observed: 3.9 ft at 5:15PM May 22, 2017Observed: 3.91 ft at 5:30PM May 22, 2017Observed: 3.92 ft at 5:45PM May 22, 2017Observed: 3.92 ft at 6:00PM May 22, 2017Highest Observation: 3.93 ft at 6:15PM May 22, 2017Highest Observation: 3.93 ft at 6:30PM May 22, 2017Highest Observation: 3.93 ft at 6:45PM May 22, 2017Highest Observation: 3.93 ft at 7:00PM May 22, 2017Highest Observation: 3.93 ft at 7:15PM May 22, 2017Observed: 3.92 ft at 7:30PM May 22, 2017Observed: 3.92 ft at 7:45PM May 22, 2017Observed: 3.91 ft at 8:00PM May 22, 2017Observed: 3.9 ft at 8:15PM May 22, 2017Observed: 3.9 ft at 8:30PM May 22, 2017Observed: 3.9 ft at 8:45PM May 22, 2017Observed: 3.89 ft at 9:00PM May 22, 2017Observed: 3.89 ft at 9:15PM May 22, 2017Observed: 3.88 ft at 9:30PM May 22, 2017Observed: 3.88 ft at 9:45PM May 22, 2017Observed: 3.87 ft at 10:00PM May 22, 2017Observed: 3.86 ft at 10:15PM May 22, 2017Observed: 3.86 ft at 10:30PM May 22, 2017Observed: 3.86 ft at 10:45PM May 22, 2017Observed: 3.86 ft at 11:00PM May 22, 2017Observed: 3.86 ft at 11:15PM May 22, 2017Observed: 3.85 ft at 11:30PM May 22, 2017Observed: 3.85 ft at 11:45PM May 22, 2017Observed: 3.84 ft at 12:00AM May 23, 2017Observed: 3.84 ft at 12:15AM May 23, 2017Observed: 3.84 ft at 12:30AM May 23, 2017Observed: 3.84 ft at 12:45AM May 23, 2017Observed: 3.84 ft at 1:00AM May 23, 2017Observed: 3.83 ft at 1:15AM May 23, 2017Observed: 3.83 ft at 1:30AM May 23, 2017Observed: 3.82 ft at 1:45AM May 23, 2017Observed: 3.82 ft at 2:00AM May 23, 2017Observed: 3.82 ft at 2:15AM May 23, 2017Observed: 3.82 ft at 2:30AM May 23, 2017Observed: 3.82 ft at 2:45AM May 23, 2017Observed: 3.82 ft at 3:00AM May 23, 2017Observed: 3.82 ft at 3:15AM May 23, 2017Observed: 3.82 ft at 3:30AM May 23, 2017Observed: 3.82 ft at 3:45AM May 23, 2017Observed: 3.82 ft at 4:00AM May 23, 2017Observed: 3.82 ft at 4:15AM May 23, 2017Observed: 3.82 ft at 4:30AM May 23, 2017Observed: 3.82 ft at 4:45AM May 23, 2017Observed: 3.82 ft at 5:00AM May 23, 2017Observed: 3.82 ft at 5:15AM May 23, 2017Observed: 3.82 ft at 5:30AM May 23, 2017Observed: 3.82 ft at 5:45AM May 23, 2017Observed: 3.82 ft at 6:00AM May 23, 2017Observed: 3.82 ft at 6:15AM May 23, 2017Observed: 3.82 ft at 6:30AM May 23, 2017Observed: 3.82 ft at 6:45AM May 23, 2017Observed: 3.82 ft at 7:00AM May 23, 2017Observed: 3.82 ft at 7:15AM May 23, 2017Observed: 3.82 ft at 7:30AM May 23, 2017Observed: 3.82 ft at 7:45AM May 23, 2017Observed: 3.83 ft at 8:00AM May 23, 2017Observed: 3.83 ft at 8:15AM May 23, 2017Observed: 3.83 ft at 8:30AM May 23, 2017Observed: 3.84 ft at 8:45AM May 23, 2017Observed: 3.84 ft at 9:00AM May 23, 2017Observed: 3.84 ft at 9:15AM May 23, 2017Observed: 3.84 ft at 9:30AM May 23, 2017Observed: 3.84 ft at 9:45AM May 23, 2017Observed: 3.84 ft at 10:00AM May 23, 2017Observed: 3.84 ft at 10:15AM May 23, 2017Observed: 3.85 ft at 10:30AM May 23, 2017Observed: 3.85 ft at 10:45AM May 23, 2017Observed: 3.85 ft at 11:00AM May 23, 2017Observed: 3.85 ft at 11:15AM May 23, 2017Observed: 3.85 ft at 11:30AM May 23, 2017Observed: 3.85 ft at 11:45AM May 23, 2017Observed: 3.86 ft at 12:00PM May 23, 2017Observed: 3.86 ft at 12:15PM May 23, 2017Observed: 3.86 ft at 12:30PM May 23, 2017Observed: 3.86 ft at 12:45PM May 23, 2017Observed: 3.86 ft at 1:00PM May 23, 2017Observed: 3.86 ft at 1:15PM May 23, 2017Observed: 3.86 ft at 1:30PM May 23, 2017Observed: 3.86 ft at 1:45PM May 23, 2017Observed: 3.86 ft at 2:00PM May 23, 2017Observed: 3.86 ft at 2:15PM May 23, 2017Observed: 3.86 ft at 2:30PM May 23, 2017Observed: 3.86 ft at 2:45PM May 23, 2017Observed: 3.86 ft at 3:00PM May 23, 2017Observed: 3.86 ft at 3:15PM May 23, 2017Observed: 3.86 ft at 3:30PM May 23, 2017Observed: 3.86 ft at 3:45PM May 23, 2017Observed: 3.86 ft at 4:00PM May 23, 2017Observed: 3.86 ft at 4:15PM May 23, 2017Observed: 3.86 ft at 4:30PM May 23, 2017Observed: 3.86 ft at 4:45PM May 23, 2017Observed: 3.86 ft at 5:00PM May 23, 2017Observed: 3.86 ft at 5:15PM May 23, 2017Observed: 3.87 ft at 5:30PM May 23, 2017Observed: 3.87 ft at 5:45PM May 23, 2017Observed: 3.87 ft at 6:00PM May 23, 2017Observed: 3.87 ft at 6:15PM May 23, 2017Observed: 3.87 ft at 6:30PM May 23, 2017Observed: 3.87 ft at 6:45PM May 23, 2017Observed: 3.87 ft at 7:00PM May 23, 2017Observed: 3.87 ft at 7:15PM May 23, 2017Observed: 3.87 ft at 7:30PM May 23, 2017Observed: 3.87 ft at 7:45PM May 23, 2017Observed: 3.87 ft at 8:00PM May 23, 2017Observed: 3.87 ft at 8:15PM May 23, 2017Observed: 3.87 ft at 8:30PM May 23, 2017Observed: 3.87 ft at 8:45PM May 23, 2017Observed: 3.87 ft at 9:00PM May 23, 2017Observed: 3.87 ft at 9:15PM May 23, 2017Observed: 3.87 ft at 9:30PM May 23, 2017Observed: 3.87 ft at 9:45PM May 23, 2017Observed: 3.87 ft at 10:00PM May 23, 2017Observed: 3.87 ft at 10:15PM May 23, 2017Observed: 3.87 ft at 10:30PM May 23, 2017Observed: 3.87 ft at 10:45PM May 23, 2017Observed: 3.87 ft at 11:00PM May 23, 2017Observed: 3.87 ft at 11:15PM May 23, 2017Observed: 3.87 ft at 11:30PM May 23, 2017Observed: 3.87 ft at 11:45PM May 23, 2017Observed: 3.87 ft at 12:00AM May 24, 2017Observed: 3.87 ft at 12:15AM May 24, 2017Observed: 3.87 ft at 12:30AM May 24, 2017Observed: 3.86 ft at 12:45AM May 24, 2017Observed: 3.86 ft at 1:00AM May 24, 2017Observed: 3.86 ft at 1:15AM May 24, 2017Observed: 3.86 ft at 1:30AM May 24, 2017Observed: 3.86 ft at 1:45AM May 24, 2017Observed: 3.86 ft at 2:00AM May 24, 2017Observed: 3.86 ft at 2:15AM May 24, 2017Observed: 3.86 ft at 2:30AM May 24, 2017Observed: 3.86 ft at 2:45AM May 24, 2017Observed: 3.86 ft at 3:00AM May 24, 2017Observed: 3.86 ft at 3:15AM May 24, 2017Observed: 3.86 ft at 3:30AM May 24, 2017Observed: 3.86 ft at 3:45AM May 24, 2017Observed: 3.86 ft at 4:00AM May 24, 2017Observed: 3.86 ft at 4:15AM May 24, 2017Forecast: 3.9 ft 8:00AM May 24, 2017Forecast: 3.8 ft 2:00PM May 24, 2017Forecast: 3.8 ft 8:00PM May 24, 2017Forecast: 3.8 ft 2:00AM May 25, 2017Forecast: 3.9 ft 8:00AM May 25, 2017Forecast: 4 ft 2:00PM May 25, 2017Forecast: 4 ft 8:00PM May 25, 2017Forecast: 4 ft 2:00AM May 26, 2017Highest Forecast: 4.1 ft 8:00AM May 26, 2017USGS--Water Resources of the United StatesCAMN4(plotting HGIRG) Graph Created (5:32AM May 24, 2017)ObservedForecast (issued 9:42AM May 23)Latest observed value: 3.86 ft at 4:15 AM EDT 24-May-2017. Flood Stage is 6 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Passaic River at Chatham are issued routinely year-round.
Return to Area Map
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
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
3 Day (SREF) 7 Day (NAEFS) 7 Day (GEFS)
SREF Ensemble NAEFS Ensemble  GEFS Ensemble 

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 3,7 day graphics. 

Click individual graphics to enlarge.

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: 21-Dec-2016 5:21 PM
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