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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS) at a repurposed https://water.noaa.gov. A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id: https://preview.water.noaa.gov/gauges/SSSSS.

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

Please visit https://www.weather.gov/owp/operations for more information.



Hydrograph River at a Glance Download
South Branch Raritan River at Neshanic Station Stage (ft)Observed: 4.79 ft at 9:30AM Mar 02, 2024Observed: 4.79 ft at 9:45AM Mar 02, 2024Observed: 4.8 ft at 10:00AM Mar 02, 2024Observed: 4.81 ft at 10:15AM Mar 02, 2024Observed: 4.81 ft at 10:30AM Mar 02, 2024Observed: 4.83 ft at 10:45AM Mar 02, 2024Observed: 4.84 ft at 11:00AM Mar 02, 2024Observed: 4.86 ft at 11:15AM Mar 02, 2024Observed: 4.88 ft at 11:30AM Mar 02, 2024Observed: 4.91 ft at 11:45AM Mar 02, 2024Observed: 4.94 ft at 12:00PM Mar 02, 2024Observed: 4.98 ft at 12:15PM Mar 02, 2024Observed: 5.03 ft at 12:30PM Mar 02, 2024Observed: 5.1 ft at 12:45PM Mar 02, 2024Observed: 5.19 ft at 1:00PM Mar 02, 2024Observed: 5.3 ft at 1:15PM Mar 02, 2024Observed: 5.42 ft at 1:30PM Mar 02, 2024Observed: 5.55 ft at 1:45PM Mar 02, 2024Observed: 5.71 ft at 2:00PM Mar 02, 2024Observed: 5.91 ft at 2:15PM Mar 02, 2024Observed: 6.16 ft at 2:30PM Mar 02, 2024Observed: 6.44 ft at 2:45PM Mar 02, 2024Observed: 6.76 ft at 3:00PM Mar 02, 2024Observed: 7.06 ft at 3:15PM Mar 02, 2024Observed: 7.36 ft at 3:30PM Mar 02, 2024Observed: 7.62 ft at 3:45PM Mar 02, 2024Observed: 7.9 ft at 4:00PM Mar 02, 2024Observed: 8.18 ft at 4:15PM Mar 02, 2024Observed: 8.44 ft at 4:30PM Mar 02, 2024Observed: 8.68 ft at 4:45PM Mar 02, 2024Observed: 8.88 ft at 5:00PM Mar 02, 2024Observed: 9.03 ft at 5:15PM Mar 02, 2024Observed: 9.15 ft at 5:30PM Mar 02, 2024Observed: 9.26 ft at 5:45PM Mar 02, 2024Observed: 9.35 ft at 6:00PM Mar 02, 2024Observed: 9.45 ft at 6:15PM Mar 02, 2024Observed: 9.49 ft at 6:30PM Mar 02, 2024Observed: 9.53 ft at 6:45PM Mar 02, 2024Highest Observation: 9.55 ft at 7:00PM Mar 02, 2024Observed: 9.53 ft at 7:15PM Mar 02, 2024Observed: 9.49 ft at 7:30PM Mar 02, 2024Observed: 9.44 ft at 7:45PM Mar 02, 2024Observed: 9.37 ft at 8:00PM Mar 02, 2024Observed: 9.28 ft at 8:15PM Mar 02, 2024Observed: 9.18 ft at 8:30PM Mar 02, 2024Observed: 9.07 ft at 8:45PM Mar 02, 2024Observed: 8.95 ft at 9:00PM Mar 02, 2024Observed: 8.84 ft at 9:15PM Mar 02, 2024Observed: 8.72 ft at 9:30PM Mar 02, 2024Observed: 8.6 ft at 9:45PM Mar 02, 2024Observed: 8.49 ft at 10:00PM Mar 02, 2024Observed: 8.37 ft at 10:15PM Mar 02, 2024Observed: 8.27 ft at 10:30PM Mar 02, 2024Observed: 8.18 ft at 10:45PM Mar 02, 2024Observed: 8.08 ft at 11:00PM Mar 02, 2024Observed: 7.99 ft at 11:15PM Mar 02, 2024Observed: 7.9 ft at 11:30PM Mar 02, 2024Observed: 7.83 ft at 11:45PM Mar 02, 2024Observed: 7.75 ft at 12:00AM Mar 03, 2024Observed: 7.67 ft at 12:15AM Mar 03, 2024Observed: 7.61 ft at 12:30AM Mar 03, 2024Observed: 7.54 ft at 12:45AM Mar 03, 2024Observed: 7.48 ft at 1:00AM Mar 03, 2024Observed: 7.43 ft at 1:15AM Mar 03, 2024Observed: 7.39 ft at 1:30AM Mar 03, 2024Observed: 7.36 ft at 1:45AM Mar 03, 2024Observed: 7.34 ft at 2:00AM Mar 03, 2024Observed: 7.34 ft at 2:15AM Mar 03, 2024Observed: 7.35 ft at 2:30AM Mar 03, 2024Observed: 7.37 ft at 2:45AM Mar 03, 2024Observed: 7.37 ft at 3:00AM Mar 03, 2024Observed: 7.37 ft at 3:15AM Mar 03, 2024Observed: 7.36 ft at 3:30AM Mar 03, 2024Observed: 7.35 ft at 3:45AM Mar 03, 2024Observed: 7.32 ft at 4:00AM Mar 03, 2024Observed: 7.3 ft at 4:15AM Mar 03, 2024Observed: 7.27 ft at 4:30AM Mar 03, 2024Observed: 7.24 ft at 4:45AM Mar 03, 2024Observed: 7.21 ft at 5:00AM Mar 03, 2024Observed: 7.17 ft at 5:15AM Mar 03, 2024Observed: 7.13 ft at 5:30AM Mar 03, 2024Observed: 7.1 ft at 5:45AM Mar 03, 2024Observed: 7.07 ft at 6:00AM Mar 03, 2024Observed: 7.04 ft at 6:15AM Mar 03, 2024Observed: 7.01 ft at 6:30AM Mar 03, 2024Observed: 6.98 ft at 6:45AM Mar 03, 2024Observed: 6.95 ft at 7:00AM Mar 03, 2024Observed: 6.92 ft at 7:15AM Mar 03, 2024Observed: 6.88 ft at 7:30AM Mar 03, 2024Observed: 6.85 ft at 7:45AM Mar 03, 2024Observed: 6.82 ft at 8:00AM Mar 03, 2024Observed: 6.8 ft at 8:15AM Mar 03, 2024Observed: 6.77 ft at 8:30AM Mar 03, 2024Observed: 6.74 ft at 8:45AM Mar 03, 2024Observed: 6.72 ft at 9:00AM Mar 03, 2024Observed: 6.69 ft at 9:15AM Mar 03, 2024Observed: 6.66 ft at 9:30AM Mar 03, 2024Observed: 6.64 ft at 9:45AM Mar 03, 2024Observed: 6.61 ft at 10:00AM Mar 03, 2024Observed: 6.59 ft at 10:15AM Mar 03, 2024Observed: 6.57 ft at 10:30AM Mar 03, 2024Observed: 6.54 ft at 10:45AM Mar 03, 2024Observed: 6.52 ft at 11:00AM Mar 03, 2024Observed: 6.5 ft at 11:15AM Mar 03, 2024Observed: 6.48 ft at 11:30AM Mar 03, 2024Observed: 6.46 ft at 11:45AM Mar 03, 2024Observed: 6.44 ft at 12:00PM Mar 03, 2024Observed: 6.42 ft at 12:15PM Mar 03, 2024Observed: 6.4 ft at 12:30PM Mar 03, 2024Observed: 6.38 ft at 12:45PM Mar 03, 2024Observed: 6.36 ft at 1:00PM Mar 03, 2024Observed: 6.35 ft at 1:15PM Mar 03, 2024Observed: 6.33 ft at 1:30PM Mar 03, 2024Observed: 6.31 ft at 1:45PM Mar 03, 2024Observed: 6.29 ft at 2:00PM Mar 03, 2024Observed: 6.29 ft at 2:15PM Mar 03, 2024Observed: 6.27 ft at 2:30PM Mar 03, 2024Observed: 6.25 ft at 2:45PM Mar 03, 2024Observed: 6.25 ft at 3:00PM Mar 03, 2024Observed: 6.23 ft at 3:15PM Mar 03, 2024Observed: 6.22 ft at 3:30PM Mar 03, 2024Observed: 6.2 ft at 3:45PM Mar 03, 2024Observed: 6.19 ft at 4:00PM Mar 03, 2024Observed: 6.17 ft at 4:15PM Mar 03, 2024Observed: 6.16 ft at 4:30PM Mar 03, 2024Observed: 6.15 ft at 4:45PM Mar 03, 2024Observed: 6.14 ft at 5:00PM Mar 03, 2024Observed: 6.13 ft at 5:15PM Mar 03, 2024Observed: 6.11 ft at 5:30PM Mar 03, 2024Observed: 6.11 ft at 5:45PM Mar 03, 2024Observed: 6.09 ft at 6:00PM Mar 03, 2024Observed: 6.08 ft at 6:15PM Mar 03, 2024Observed: 6.08 ft at 6:30PM Mar 03, 2024Observed: 6.07 ft at 6:45PM Mar 03, 2024Observed: 6.06 ft at 7:00PM Mar 03, 2024Observed: 6.05 ft at 7:15PM Mar 03, 2024Observed: 6.03 ft at 7:30PM Mar 03, 2024Observed: 6.02 ft at 7:45PM Mar 03, 2024Observed: 6.01 ft at 8:00PM Mar 03, 2024Observed: 5.99 ft at 8:15PM Mar 03, 2024Observed: 5.97 ft at 8:30PM Mar 03, 2024Observed: 5.95 ft at 8:45PM Mar 03, 2024Observed: 5.92 ft at 9:00PM Mar 03, 2024Observed: 5.88 ft at 9:15PM Mar 03, 2024Observed: 5.85 ft at 9:30PM Mar 03, 2024Observed: 5.8 ft at 9:45PM Mar 03, 2024Observed: 5.76 ft at 10:00PM Mar 03, 2024Observed: 5.72 ft at 10:15PM Mar 03, 2024Observed: 5.68 ft at 10:30PM Mar 03, 2024Observed: 5.65 ft at 10:45PM Mar 03, 2024Observed: 5.62 ft at 11:00PM Mar 03, 2024Observed: 5.59 ft at 11:15PM Mar 03, 2024Observed: 5.57 ft at 11:30PM Mar 03, 2024Observed: 5.56 ft at 11:45PM Mar 03, 2024Observed: 5.55 ft at 12:00AM Mar 04, 2024Observed: 5.53 ft at 12:15AM Mar 04, 2024Observed: 5.53 ft at 12:30AM Mar 04, 2024Observed: 5.52 ft at 12:45AM Mar 04, 2024Observed: 5.51 ft at 1:00AM Mar 04, 2024Observed: 5.51 ft at 1:15AM Mar 04, 2024Observed: 5.5 ft at 1:30AM Mar 04, 2024Observed: 5.5 ft at 1:45AM Mar 04, 2024Observed: 5.49 ft at 2:00AM Mar 04, 2024Observed: 5.49 ft at 2:15AM Mar 04, 2024Observed: 5.48 ft at 2:30AM Mar 04, 2024Observed: 5.47 ft at 2:45AM Mar 04, 2024Observed: 5.47 ft at 3:00AM Mar 04, 2024Observed: 5.47 ft at 3:15AM Mar 04, 2024Observed: 5.46 ft at 3:30AM Mar 04, 2024Observed: 5.45 ft at 3:45AM Mar 04, 2024Observed: 5.45 ft at 4:00AM Mar 04, 2024Observed: 5.44 ft at 4:15AM Mar 04, 2024Observed: 5.44 ft at 4:30AM Mar 04, 2024Observed: 5.43 ft at 4:45AM Mar 04, 2024Observed: 5.42 ft at 5:00AM Mar 04, 2024Observed: 5.42 ft at 5:15AM Mar 04, 2024Observed: 5.41 ft at 5:30AM Mar 04, 2024Observed: 5.41 ft at 5:45AM Mar 04, 2024Observed: 5.4 ft at 6:00AM Mar 04, 2024Observed: 5.39 ft at 6:15AM Mar 04, 2024Observed: 5.39 ft at 6:30AM Mar 04, 2024Observed: 5.38 ft at 6:45AM Mar 04, 2024Observed: 5.38 ft at 7:00AM Mar 04, 2024Observed: 5.38 ft at 7:15AM Mar 04, 2024Observed: 5.37 ft at 7:30AM Mar 04, 2024Observed: 5.36 ft at 7:45AM Mar 04, 2024Observed: 5.36 ft at 8:00AM Mar 04, 2024Observed: 5.35 ft at 8:15AM Mar 04, 2024Observed: 5.35 ft at 8:30AM Mar 04, 2024Observed: 5.34 ft at 8:45AM Mar 04, 2024Observed: 5.34 ft at 9:00AM Mar 04, 2024Observed: 5.33 ft at 9:15AM Mar 04, 2024Observed: 5.33 ft at 9:30AM Mar 04, 2024Observed: 5.33 ft at 9:45AM Mar 04, 2024Observed: 5.32 ft at 10:00AM Mar 04, 2024Observed: 5.32 ft at 10:15AM Mar 04, 2024Observed: 5.31 ft at 10:30AM Mar 04, 2024Observed: 5.31 ft at 10:45AM Mar 04, 2024Observed: 5.3 ft at 11:00AM Mar 04, 2024Observed: 5.3 ft at 11:15AM Mar 04, 2024Observed: 5.3 ft at 11:30AM Mar 04, 2024Observed: 5.29 ft at 11:45AM Mar 04, 2024Observed: 5.29 ft at 12:00PM Mar 04, 2024Observed: 5.29 ft at 12:15PM Mar 04, 2024Observed: 5.29 ft at 12:30PM Mar 04, 2024Observed: 5.28 ft at 12:45PM Mar 04, 2024Observed: 5.28 ft at 1:00PM Mar 04, 2024Observed: 5.28 ft at 1:15PM Mar 04, 2024Observed: 5.27 ft at 1:30PM Mar 04, 2024Observed: 5.27 ft at 1:45PM Mar 04, 2024Observed: 5.26 ft at 2:00PM Mar 04, 2024Observed: 5.26 ft at 2:15PM Mar 04, 2024Observed: 5.26 ft at 2:30PM Mar 04, 2024Observed: 5.25 ft at 2:45PM Mar 04, 2024Observed: 5.25 ft at 3:00PM Mar 04, 2024Observed: 5.24 ft at 3:15PM Mar 04, 2024Observed: 5.24 ft at 3:30PM Mar 04, 2024Observed: 5.24 ft at 3:45PM Mar 04, 2024Observed: 5.24 ft at 4:00PM Mar 04, 2024Observed: 5.23 ft at 4:15PM Mar 04, 2024Observed: 5.23 ft at 4:30PM Mar 04, 2024Observed: 5.22 ft at 4:45PM Mar 04, 2024Observed: 5.22 ft at 5:00PM Mar 04, 2024Observed: 5.22 ft at 5:15PM Mar 04, 2024Observed: 5.21 ft at 5:30PM Mar 04, 2024Observed: 5.21 ft at 5:45PM Mar 04, 2024Observed: 5.2 ft at 6:00PM Mar 04, 2024Observed: 5.2 ft at 6:15PM Mar 04, 2024Observed: 5.19 ft at 6:30PM Mar 04, 2024Observed: 5.19 ft at 6:45PM Mar 04, 2024Observed: 5.19 ft at 7:00PM Mar 04, 2024Observed: 5.18 ft at 7:15PM Mar 04, 2024Observed: 5.18 ft at 7:30PM Mar 04, 2024Observed: 5.18 ft at 7:45PM Mar 04, 2024Observed: 5.17 ft at 8:00PM Mar 04, 2024Observed: 5.17 ft at 8:15PM Mar 04, 2024Observed: 5.17 ft at 8:30PM Mar 04, 2024Observed: 5.16 ft at 8:45PM Mar 04, 2024Observed: 5.16 ft at 9:00PM Mar 04, 2024Observed: 5.15 ft at 9:15PM Mar 04, 2024Observed: 5.15 ft at 9:30PM Mar 04, 2024Observed: 5.15 ft at 9:45PM Mar 04, 2024Observed: 5.14 ft at 10:00PM Mar 04, 2024Observed: 5.14 ft at 10:15PM Mar 04, 2024Observed: 5.14 ft at 10:30PM Mar 04, 2024Observed: 5.14 ft at 10:45PM Mar 04, 2024Observed: 5.15 ft at 11:00PM Mar 04, 2024Observed: 5.15 ft at 11:15PM Mar 04, 2024Observed: 5.15 ft at 11:30PM Mar 04, 2024Observed: 5.16 ft at 11:45PM Mar 04, 2024Observed: 5.16 ft at 12:00AM Mar 05, 2024Observed: 5.17 ft at 12:15AM Mar 05, 2024Observed: 5.17 ft at 12:30AM Mar 05, 2024Observed: 5.18 ft at 12:45AM Mar 05, 2024Observed: 5.18 ft at 1:00AM Mar 05, 2024Observed: 5.18 ft at 1:15AM Mar 05, 2024Observed: 5.18 ft at 1:30AM Mar 05, 2024Observed: 5.18 ft at 1:45AM Mar 05, 2024Observed: 5.18 ft at 2:00AM Mar 05, 2024Observed: 5.18 ft at 2:15AM Mar 05, 2024Observed: 5.17 ft at 2:30AM Mar 05, 2024Observed: 5.17 ft at 2:45AM Mar 05, 2024Observed: 5.17 ft at 3:00AM Mar 05, 2024Observed: 5.17 ft at 3:15AM Mar 05, 2024Observed: 5.16 ft at 3:30AM Mar 05, 2024Observed: 5.17 ft at 3:45AM Mar 05, 2024Observed: 5.16 ft at 4:00AM Mar 05, 2024Observed: 5.16 ft at 4:15AM Mar 05, 2024Observed: 5.16 ft at 4:30AM Mar 05, 2024Observed: 5.15 ft at 4:45AM Mar 05, 2024Observed: 5.16 ft at 5:00AM Mar 05, 2024Observed: 5.15 ft at 5:15AM Mar 05, 2024Observed: 5.15 ft at 5:30AM Mar 05, 2024Observed: 5.15 ft at 5:45AM Mar 05, 2024Observed: 5.16 ft at 6:00AM Mar 05, 2024Observed: 5.15 ft at 6:15AM Mar 05, 2024Observed: 5.16 ft at 6:30AM Mar 05, 2024Observed: 5.16 ft at 6:45AM Mar 05, 2024Observed: 5.16 ft at 7:00AM Mar 05, 2024Observed: 5.16 ft at 7:15AM Mar 05, 2024Observed: 5.17 ft at 7:30AM Mar 05, 2024Observed: 5.17 ft at 7:45AM Mar 05, 2024Observed: 5.18 ft at 8:00AM Mar 05, 2024USGS--Water Resources of the United StatesNSNN4(plotting HGIRG) Graph Created (9:18AM Mar 5, 2024)ObservedLatest observed value: 5.18 ft at 8:00 AM EST 5-Mar-2024.
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the South Branch Raritan River at Neshanic Station. Only observed stages are available for this point.
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Flood Categories (in feet)
Not Available

Historic Crests
(1) 22.18 ft on 08/28/2011
(2) 17.37 ft on 04/16/2007
(3) 16.44 ft on 05/01/2014
(4) 16.36 ft on 03/14/2010
(5) 15.69 ft on 10/12/2005
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.44 ft on 05/01/2014
(2) 22.18 ft on 08/28/2011
(3) 16.36 ft on 03/14/2010
(4) 14.97 ft on 03/08/2008
(5) 17.37 ft on 04/16/2007
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

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

Zoom Level:16
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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.
About This Location Collapse

Latitude: 40.502222° N, Longitude: 74.741944° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 60 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.
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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: 2-Nov-2020 7:30 PM
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