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Hydrograph River at a Glance Download
North Branch Raritan River near Raritan Stage (ft)Flow (kcfs)Observed: 2.86 ft at 9:15PM Dec 01, 2021Observed: 2.86 ft at 9:30PM Dec 01, 2021Observed: 2.86 ft at 9:45PM Dec 01, 2021Observed: 2.86 ft at 10:00PM Dec 01, 2021Observed: 2.86 ft at 10:15PM Dec 01, 2021Observed: 2.86 ft at 10:30PM Dec 01, 2021Observed: 2.86 ft at 10:45PM Dec 01, 2021Observed: 2.86 ft at 11:00PM Dec 01, 2021Observed: 2.86 ft at 11:15PM Dec 01, 2021Observed: 2.86 ft at 11:30PM Dec 01, 2021Observed: 2.86 ft at 11:45PM Dec 01, 2021Observed: 2.86 ft at 12:00AM Dec 02, 2021Observed: 2.86 ft at 12:15AM Dec 02, 2021Observed: 2.86 ft at 12:30AM Dec 02, 2021Observed: 2.86 ft at 12:45AM Dec 02, 2021Observed: 2.86 ft at 1:00AM Dec 02, 2021Observed: 2.86 ft at 1:15AM Dec 02, 2021Observed: 2.87 ft at 1:30AM Dec 02, 2021Observed: 2.87 ft at 1:45AM Dec 02, 2021Observed: 2.87 ft at 2:00AM Dec 02, 2021Observed: 2.87 ft at 2:15AM Dec 02, 2021Observed: 2.87 ft at 2:30AM Dec 02, 2021Observed: 2.87 ft at 2:45AM Dec 02, 2021Observed: 2.87 ft at 3:00AM Dec 02, 2021Observed: 2.87 ft at 3:15AM Dec 02, 2021Observed: 2.87 ft at 3:30AM Dec 02, 2021Observed: 2.87 ft at 3:45AM Dec 02, 2021Observed: 2.87 ft at 4:00AM Dec 02, 2021Observed: 2.87 ft at 4:15AM Dec 02, 2021Observed: 2.87 ft at 4:30AM Dec 02, 2021Observed: 2.87 ft at 4:45AM Dec 02, 2021Observed: 2.87 ft at 5:00AM Dec 02, 2021Observed: 2.87 ft at 5:15AM Dec 02, 2021Observed: 2.87 ft at 5:30AM Dec 02, 2021Observed: 2.87 ft at 5:45AM Dec 02, 2021Observed: 2.87 ft at 6:00AM Dec 02, 2021Observed: 2.87 ft at 6:15AM Dec 02, 2021Observed: 2.87 ft at 6:30AM Dec 02, 2021Observed: 2.87 ft at 6:45AM Dec 02, 2021Observed: 2.87 ft at 7:00AM Dec 02, 2021Observed: 2.87 ft at 7:15AM Dec 02, 2021Observed: 2.87 ft at 7:30AM Dec 02, 2021Observed: 2.88 ft at 7:45AM Dec 02, 2021Observed: 2.88 ft at 8:00AM Dec 02, 2021Observed: 2.88 ft at 8:15AM Dec 02, 2021Observed: 2.88 ft at 8:30AM Dec 02, 2021Observed: 2.88 ft at 8:45AM Dec 02, 2021Observed: 2.88 ft at 9:00AM Dec 02, 2021Observed: 2.88 ft at 9:15AM Dec 02, 2021Observed: 2.88 ft at 9:30AM Dec 02, 2021Observed: 2.89 ft at 9:45AM Dec 02, 2021Observed: 2.89 ft at 10:00AM Dec 02, 2021Observed: 2.89 ft at 10:15AM Dec 02, 2021Observed: 2.89 ft at 10:30AM Dec 02, 2021Observed: 2.89 ft at 10:45AM Dec 02, 2021Observed: 2.89 ft at 11:00AM Dec 02, 2021Observed: 2.89 ft at 11:15AM Dec 02, 2021Observed: 2.89 ft at 11:30AM Dec 02, 2021Observed: 2.89 ft at 11:45AM Dec 02, 2021Observed: 2.89 ft at 12:00PM Dec 02, 2021Observed: 2.9 ft at 12:15PM Dec 02, 2021Observed: 2.9 ft at 12:30PM Dec 02, 2021Observed: 2.9 ft at 12:45PM Dec 02, 2021Observed: 2.9 ft at 1:00PM Dec 02, 2021Observed: 2.9 ft at 1:15PM Dec 02, 2021Observed: 2.9 ft at 1:30PM Dec 02, 2021Observed: 2.9 ft at 1:45PM Dec 02, 2021Observed: 2.91 ft at 2:00PM Dec 02, 2021Observed: 2.91 ft at 2:15PM Dec 02, 2021Observed: 2.91 ft at 2:30PM Dec 02, 2021Observed: 2.91 ft at 2:45PM Dec 02, 2021Observed: 2.91 ft at 3:00PM Dec 02, 2021Observed: 2.91 ft at 3:15PM Dec 02, 2021Observed: 2.91 ft at 3:30PM Dec 02, 2021Observed: 2.92 ft at 3:45PM Dec 02, 2021Observed: 2.92 ft at 4:00PM Dec 02, 2021Observed: 2.92 ft at 4:15PM Dec 02, 2021Observed: 2.92 ft at 4:30PM Dec 02, 2021Observed: 2.93 ft at 4:45PM Dec 02, 2021Observed: 2.93 ft at 5:00PM Dec 02, 2021Observed: 2.93 ft at 5:15PM Dec 02, 2021Observed: 2.93 ft at 5:30PM Dec 02, 2021Observed: 2.93 ft at 5:45PM Dec 02, 2021Observed: 2.93 ft at 6:00PM Dec 02, 2021Observed: 2.93 ft at 6:15PM Dec 02, 2021Observed: 2.93 ft at 6:30PM Dec 02, 2021Observed: 2.94 ft at 6:45PM Dec 02, 2021Observed: 2.94 ft at 7:00PM Dec 02, 2021Observed: 2.94 ft at 7:15PM Dec 02, 2021Observed: 2.94 ft at 7:30PM Dec 02, 2021Observed: 2.94 ft at 7:45PM Dec 02, 2021Observed: 2.94 ft at 8:00PM Dec 02, 2021Observed: 2.94 ft at 8:15PM Dec 02, 2021Observed: 2.94 ft at 8:30PM Dec 02, 2021Observed: 2.94 ft at 8:45PM Dec 02, 2021Observed: 2.94 ft at 9:00PM Dec 02, 2021Observed: 2.94 ft at 9:15PM Dec 02, 2021Observed: 2.94 ft at 9:30PM Dec 02, 2021Observed: 2.94 ft at 9:45PM Dec 02, 2021Highest Observation: 2.95 ft at 10:00PM Dec 02, 2021Highest Observation: 2.95 ft at 10:15PM Dec 02, 2021Highest Observation: 2.95 ft at 10:30PM Dec 02, 2021Highest Observation: 2.95 ft at 10:45PM Dec 02, 2021Highest Observation: 2.95 ft at 11:00PM Dec 02, 2021Highest Observation: 2.95 ft at 11:15PM Dec 02, 2021Highest Observation: 2.95 ft at 11:30PM Dec 02, 2021Highest Observation: 2.95 ft at 11:45PM Dec 02, 2021Highest Observation: 2.95 ft at 12:00AM Dec 03, 2021Highest Observation: 2.95 ft at 12:15AM Dec 03, 2021Highest Observation: 2.95 ft at 12:30AM Dec 03, 2021Highest Observation: 2.95 ft at 12:45AM Dec 03, 2021Highest Observation: 2.95 ft at 1:00AM Dec 03, 2021Highest Observation: 2.95 ft at 1:15AM Dec 03, 2021Highest Observation: 2.95 ft at 1:30AM Dec 03, 2021Highest Observation: 2.95 ft at 1:45AM Dec 03, 2021Highest Observation: 2.95 ft at 2:00AM Dec 03, 2021Highest Observation: 2.95 ft at 2:15AM Dec 03, 2021Observed: 2.94 ft at 2:30AM Dec 03, 2021Observed: 2.94 ft at 2:45AM Dec 03, 2021Observed: 2.94 ft at 3:00AM Dec 03, 2021Observed: 2.94 ft at 3:15AM Dec 03, 2021Observed: 2.94 ft at 3:30AM Dec 03, 2021Observed: 2.94 ft at 3:45AM Dec 03, 2021Observed: 2.94 ft at 4:00AM Dec 03, 2021Observed: 2.94 ft at 4:15AM Dec 03, 2021Observed: 2.94 ft at 4:30AM Dec 03, 2021Observed: 2.94 ft at 4:45AM Dec 03, 2021Observed: 2.94 ft at 5:00AM Dec 03, 2021Observed: 2.94 ft at 5:15AM Dec 03, 2021Observed: 2.94 ft at 5:30AM Dec 03, 2021Observed: 2.94 ft at 5:45AM Dec 03, 2021Observed: 2.94 ft at 6:00AM Dec 03, 2021Highest Observation: 2.95 ft at 6:15AM Dec 03, 2021Highest Observation: 2.95 ft at 6:30AM Dec 03, 2021Highest Observation: 2.95 ft at 6:45AM Dec 03, 2021Highest Observation: 2.95 ft at 7:00AM Dec 03, 2021Highest Observation: 2.95 ft at 7:15AM Dec 03, 2021Highest Observation: 2.95 ft at 7:30AM Dec 03, 2021Highest Observation: 2.95 ft at 7:45AM Dec 03, 2021Observed: 2.94 ft at 8:00AM Dec 03, 2021Observed: 2.94 ft at 8:15AM Dec 03, 2021Observed: 2.94 ft at 8:30AM Dec 03, 2021Observed: 2.94 ft at 8:45AM Dec 03, 2021Observed: 2.94 ft at 9:00AM Dec 03, 2021Observed: 2.93 ft at 9:15AM Dec 03, 2021Observed: 2.93 ft at 9:30AM Dec 03, 2021Observed: 2.93 ft at 9:45AM Dec 03, 2021Observed: 2.93 ft at 10:00AM Dec 03, 2021Observed: 2.93 ft at 10:15AM Dec 03, 2021Observed: 2.92 ft at 10:30AM Dec 03, 2021Observed: 2.92 ft at 10:45AM Dec 03, 2021Observed: 2.92 ft at 11:00AM Dec 03, 2021Observed: 2.92 ft at 11:15AM Dec 03, 2021Observed: 2.92 ft at 11:30AM Dec 03, 2021Observed: 2.92 ft at 11:45AM Dec 03, 2021Observed: 2.91 ft at 12:00PM Dec 03, 2021Observed: 2.91 ft at 12:15PM Dec 03, 2021Observed: 2.91 ft at 12:30PM Dec 03, 2021Observed: 2.91 ft at 12:45PM Dec 03, 2021Observed: 2.91 ft at 1:00PM Dec 03, 2021Observed: 2.91 ft at 1:15PM Dec 03, 2021Observed: 2.91 ft at 1:30PM Dec 03, 2021Observed: 2.91 ft at 1:45PM Dec 03, 2021Observed: 2.91 ft at 2:00PM Dec 03, 2021Observed: 2.91 ft at 2:15PM Dec 03, 2021Observed: 2.91 ft at 2:30PM Dec 03, 2021Observed: 2.91 ft at 2:45PM Dec 03, 2021Observed: 2.91 ft at 3:00PM Dec 03, 2021Observed: 2.91 ft at 3:15PM Dec 03, 2021Observed: 2.91 ft at 3:30PM Dec 03, 2021Observed: 2.91 ft at 3:45PM Dec 03, 2021Observed: 2.9 ft at 4:00PM Dec 03, 2021Observed: 2.9 ft at 4:15PM Dec 03, 2021Observed: 2.9 ft at 4:30PM Dec 03, 2021Observed: 2.9 ft at 4:45PM Dec 03, 2021Observed: 2.9 ft at 5:00PM Dec 03, 2021Observed: 2.9 ft at 5:15PM Dec 03, 2021Observed: 2.9 ft at 5:30PM Dec 03, 2021Observed: 2.9 ft at 5:45PM Dec 03, 2021Observed: 2.9 ft at 6:00PM Dec 03, 2021Observed: 2.9 ft at 6:15PM Dec 03, 2021Observed: 2.9 ft at 6:30PM Dec 03, 2021Observed: 2.9 ft at 6:45PM Dec 03, 2021Observed: 2.9 ft at 7:00PM Dec 03, 2021Observed: 2.9 ft at 7:15PM Dec 03, 2021Observed: 2.9 ft at 7:30PM Dec 03, 2021Observed: 2.9 ft at 7:45PM Dec 03, 2021Observed: 2.9 ft at 8:00PM Dec 03, 2021Observed: 2.9 ft at 8:15PM Dec 03, 2021Observed: 2.89 ft at 8:30PM Dec 03, 2021Observed: 2.89 ft at 8:45PM Dec 03, 2021Observed: 2.89 ft at 9:00PM Dec 03, 2021Observed: 2.89 ft at 9:15PM Dec 03, 2021Observed: 2.89 ft at 9:30PM Dec 03, 2021Observed: 2.89 ft at 9:45PM Dec 03, 2021Observed: 2.89 ft at 10:00PM Dec 03, 2021Observed: 2.89 ft at 10:15PM Dec 03, 2021Observed: 2.89 ft at 10:30PM Dec 03, 2021Observed: 2.89 ft at 10:45PM Dec 03, 2021Observed: 2.89 ft at 11:00PM Dec 03, 2021Observed: 2.89 ft at 11:15PM Dec 03, 2021Observed: 2.89 ft at 11:30PM Dec 03, 2021Observed: 2.89 ft at 11:45PM Dec 03, 2021Observed: 2.89 ft at 12:00AM Dec 04, 2021Observed: 2.89 ft at 12:15AM Dec 04, 2021Observed: 2.89 ft at 12:30AM Dec 04, 2021Observed: 2.89 ft at 12:45AM Dec 04, 2021Observed: 2.89 ft at 1:00AM Dec 04, 2021Observed: 2.89 ft at 1:15AM Dec 04, 2021Observed: 2.89 ft at 1:30AM Dec 04, 2021Observed: 2.89 ft at 1:45AM Dec 04, 2021Observed: 2.88 ft at 2:00AM Dec 04, 2021Observed: 2.88 ft at 2:15AM Dec 04, 2021Observed: 2.88 ft at 2:30AM Dec 04, 2021Observed: 2.88 ft at 2:45AM Dec 04, 2021Observed: 2.88 ft at 3:00AM Dec 04, 2021Observed: 2.88 ft at 3:15AM Dec 04, 2021Observed: 2.88 ft at 3:30AM Dec 04, 2021Observed: 2.88 ft at 3:45AM Dec 04, 2021Observed: 2.88 ft at 4:00AM Dec 04, 2021Observed: 2.87 ft at 4:15AM Dec 04, 2021Observed: 2.87 ft at 4:30AM Dec 04, 2021Observed: 2.87 ft at 4:45AM Dec 04, 2021Observed: 2.87 ft at 5:00AM Dec 04, 2021Observed: 2.87 ft at 5:15AM Dec 04, 2021Observed: 2.87 ft at 5:30AM Dec 04, 2021Observed: 2.87 ft at 5:45AM Dec 04, 2021Observed: 2.87 ft at 6:00AM Dec 04, 2021Observed: 2.87 ft at 6:15AM Dec 04, 2021Observed: 2.87 ft at 6:30AM Dec 04, 2021Observed: 2.87 ft at 6:45AM Dec 04, 2021Observed: 2.87 ft at 7:00AM Dec 04, 2021Observed: 2.87 ft at 7:15AM Dec 04, 2021Observed: 2.87 ft at 7:30AM Dec 04, 2021Observed: 2.87 ft at 7:45AM Dec 04, 2021Observed: 2.87 ft at 8:00AM Dec 04, 2021Observed: 2.87 ft at 8:15AM Dec 04, 2021Observed: 2.87 ft at 8:30AM Dec 04, 2021Observed: 2.87 ft at 8:45AM Dec 04, 2021Observed: 2.87 ft at 9:00AM Dec 04, 2021Observed: 2.87 ft at 9:15AM Dec 04, 2021Observed: 2.87 ft at 9:30AM Dec 04, 2021Observed: 2.87 ft at 9:45AM Dec 04, 2021Observed: 2.87 ft at 10:00AM Dec 04, 2021Observed: 2.87 ft at 10:15AM Dec 04, 2021Observed: 2.87 ft at 10:30AM Dec 04, 2021Observed: 2.87 ft at 10:45AM Dec 04, 2021Observed: 2.87 ft at 11:00AM Dec 04, 2021Observed: 2.87 ft at 11:15AM Dec 04, 2021Observed: 2.87 ft at 11:30AM Dec 04, 2021Observed: 2.87 ft at 11:45AM Dec 04, 2021Observed: 2.87 ft at 12:00PM Dec 04, 2021Observed: 2.87 ft at 12:15PM Dec 04, 2021Observed: 2.87 ft at 12:30PM Dec 04, 2021Observed: 2.87 ft at 12:45PM Dec 04, 2021Observed: 2.86 ft at 1:00PM Dec 04, 2021Observed: 2.86 ft at 1:15PM Dec 04, 2021Observed: 2.86 ft at 1:30PM Dec 04, 2021Observed: 2.86 ft at 1:45PM Dec 04, 2021Observed: 2.86 ft at 2:00PM Dec 04, 2021Observed: 2.86 ft at 2:15PM Dec 04, 2021Observed: 2.87 ft at 2:30PM Dec 04, 2021Observed: 2.86 ft at 2:45PM Dec 04, 2021Observed: 2.86 ft at 3:00PM Dec 04, 2021Observed: 2.86 ft at 3:15PM Dec 04, 2021Observed: 2.86 ft at 3:30PM Dec 04, 2021Observed: 2.86 ft at 3:45PM Dec 04, 2021Observed: 2.86 ft at 4:00PM Dec 04, 2021Observed: 2.86 ft at 4:15PM Dec 04, 2021Observed: 2.86 ft at 4:30PM Dec 04, 2021Observed: 2.86 ft at 4:45PM Dec 04, 2021Observed: 2.86 ft at 5:00PM Dec 04, 2021Observed: 2.86 ft at 5:15PM Dec 04, 2021Observed: 2.86 ft at 5:30PM Dec 04, 2021Observed: 2.86 ft at 5:45PM Dec 04, 2021Observed: 2.86 ft at 6:00PM Dec 04, 2021Observed: 2.86 ft at 6:15PM Dec 04, 2021Observed: 2.86 ft at 6:30PM Dec 04, 2021Observed: 2.86 ft at 6:45PM Dec 04, 2021Observed: 2.86 ft at 7:00PM Dec 04, 2021Observed: 2.86 ft at 7:15PM Dec 04, 2021Observed: 2.86 ft at 7:30PM Dec 04, 2021Observed: 2.86 ft at 7:45PM Dec 04, 2021Observed: 2.86 ft at 8:00PM Dec 04, 2021Observed: 2.86 ft at 8:15PM Dec 04, 2021Forecast: 2.9 ft 1:00AM Dec 05, 2021Forecast: 2.9 ft 7:00AM Dec 05, 2021Forecast: 2.9 ft 1:00PM Dec 05, 2021Forecast: 2.9 ft 7:00PM Dec 05, 2021Forecast: 2.9 ft 1:00AM Dec 06, 2021Forecast: 2.9 ft 7:00AM Dec 06, 2021Forecast: 2.9 ft 1:00PM Dec 06, 2021Forecast: 2.9 ft 7:00PM Dec 06, 2021Highest Forecast: 3 ft 1:00AM Dec 07, 2021Forecast: 2.9 ft 7:00AM Dec 07, 2021USGS--Water Resources of the United StatesRRTN4(plotting HGIRG) Graph Created (9:02PM Dec 4, 2021)ObservedForecast (issued 9:19AM Dec 4)Latest observed value: 2.86 ft at 8:15 PM EST 4-Dec-2021. Flood Stage is 10 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the North Branch Raritan River near Raritan are issued routinely year-round.
Return to Area Map
Upstream Gauge - at North Branch Village Upstream Gauge Downstream Gauge Downstream Gauge - at South Branch
Flood Categories (in feet)
Major Flood Stage: 15
Moderate Flood Stage: 12
Flood Stage: 10
Action Stage: 8
Low Stage (in feet): 0

Historic Crests
(1) 19.52 ft on 09/02/2021
(2) 18.98 ft on 09/16/1999
(3) 17.97 ft on 08/28/2011
(4) 15.47 ft on 08/28/1971
(5) 15.44 ft on 10/19/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 19.52 ft on 09/02/2021
(2) 11.88 ft on 08/23/2021
(3) 10.51 ft on 11/25/2018
(4) 13.29 ft on 05/01/2014
(5) 12.70 ft on 09/08/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.23 ft on 10/13/1995
(2) 2.31 ft on 08/06/1966

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
16 US Route 202 begins to flood.
15 At this level, backwater from the Route 202 bridge effects the river.
13 The first evacuations begin in Village of North Branch at Route 28 and Vaanderveer Avenue.
10 Flooding occurs along Old York Road and in North Branch Village.
7 Minor flooding begins upstream on Black River Road.
About This Location Collapse

Latitude: 40.570556° N, Longitude: 74.679167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 10 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 50.43 ft 60.43 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
10 Day (HEFS) 7 Day (NAEFS) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

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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