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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
Rockaway River at Boonton below reservoir Stage (ft)Flow (kcfs)Highest Observation: 1.62 ft at 2:45AM Sep 18, 2017Highest Observation: 1.62 ft at 3:00AM Sep 18, 2017Highest Observation: 1.62 ft at 3:15AM Sep 18, 2017Highest Observation: 1.62 ft at 3:30AM Sep 18, 2017Highest Observation: 1.62 ft at 3:45AM Sep 18, 2017Highest Observation: 1.62 ft at 4:00AM Sep 18, 2017Highest Observation: 1.62 ft at 4:15AM Sep 18, 2017Highest Observation: 1.62 ft at 4:30AM Sep 18, 2017Highest Observation: 1.62 ft at 4:45AM Sep 18, 2017Highest Observation: 1.62 ft at 5:00AM Sep 18, 2017Highest Observation: 1.62 ft at 5:15AM Sep 18, 2017Highest Observation: 1.62 ft at 5:30AM Sep 18, 2017Highest Observation: 1.62 ft at 5:45AM Sep 18, 2017Highest Observation: 1.62 ft at 6:00AM Sep 18, 2017Highest Observation: 1.62 ft at 6:15AM Sep 18, 2017Highest Observation: 1.62 ft at 6:30AM Sep 18, 2017Highest Observation: 1.62 ft at 6:45AM Sep 18, 2017Highest Observation: 1.62 ft at 7:00AM Sep 18, 2017Highest Observation: 1.62 ft at 7:15AM Sep 18, 2017Highest Observation: 1.62 ft at 7:30AM Sep 18, 2017Highest Observation: 1.62 ft at 7:45AM Sep 18, 2017Highest Observation: 1.62 ft at 8:00AM Sep 18, 2017Highest Observation: 1.62 ft at 8:15AM Sep 18, 2017Highest Observation: 1.62 ft at 8:30AM Sep 18, 2017Highest Observation: 1.62 ft at 8:45AM Sep 18, 2017Highest Observation: 1.62 ft at 9:00AM Sep 18, 2017Highest Observation: 1.62 ft at 9:15AM Sep 18, 2017Highest Observation: 1.62 ft at 9:30AM Sep 18, 2017Highest Observation: 1.62 ft at 9:45AM Sep 18, 2017Highest Observation: 1.62 ft at 10:00AM Sep 18, 2017Highest Observation: 1.62 ft at 10:15AM Sep 18, 2017Highest Observation: 1.62 ft at 10:30AM Sep 18, 2017Highest Observation: 1.62 ft at 10:45AM Sep 18, 2017Highest Observation: 1.62 ft at 11:00AM Sep 18, 2017Highest Observation: 1.62 ft at 11:15AM Sep 18, 2017Highest Observation: 1.62 ft at 11:30AM Sep 18, 2017Highest Observation: 1.62 ft at 11:45AM Sep 18, 2017Highest Observation: 1.62 ft at 12:00PM Sep 18, 2017Highest Observation: 1.62 ft at 12:15PM Sep 18, 2017Highest Observation: 1.62 ft at 12:30PM Sep 18, 2017Highest Observation: 1.62 ft at 12:45PM Sep 18, 2017Highest Observation: 1.62 ft at 1:00PM Sep 18, 2017Highest Observation: 1.62 ft at 1:15PM Sep 18, 2017Highest Observation: 1.62 ft at 1:30PM Sep 18, 2017Highest Observation: 1.62 ft at 1:45PM Sep 18, 2017Highest Observation: 1.62 ft at 2:00PM Sep 18, 2017Highest Observation: 1.62 ft at 2:15PM Sep 18, 2017Highest Observation: 1.62 ft at 2:30PM Sep 18, 2017Highest Observation: 1.62 ft at 2:45PM Sep 18, 2017Highest Observation: 1.62 ft at 3:00PM Sep 18, 2017Highest Observation: 1.62 ft at 3:15PM Sep 18, 2017Highest Observation: 1.62 ft at 3:30PM Sep 18, 2017Highest Observation: 1.62 ft at 3:45PM Sep 18, 2017Highest Observation: 1.62 ft at 4:00PM Sep 18, 2017Highest Observation: 1.62 ft at 4:15PM Sep 18, 2017Highest Observation: 1.62 ft at 4:30PM Sep 18, 2017Highest Observation: 1.62 ft at 4:45PM Sep 18, 2017Highest Observation: 1.62 ft at 5:00PM Sep 18, 2017Highest Observation: 1.62 ft at 5:15PM Sep 18, 2017Highest Observation: 1.62 ft at 5:30PM Sep 18, 2017Highest Observation: 1.62 ft at 5:45PM Sep 18, 2017Highest Observation: 1.62 ft at 6:00PM Sep 18, 2017Highest Observation: 1.62 ft at 6:15PM Sep 18, 2017Highest Observation: 1.62 ft at 6:30PM Sep 18, 2017Highest Observation: 1.62 ft at 6:45PM Sep 18, 2017Highest Observation: 1.62 ft at 7:00PM Sep 18, 2017Highest Observation: 1.62 ft at 7:15PM Sep 18, 2017Highest Observation: 1.62 ft at 7:30PM Sep 18, 2017Highest Observation: 1.62 ft at 7:45PM Sep 18, 2017Highest Observation: 1.62 ft at 8:00PM Sep 18, 2017Highest Observation: 1.62 ft at 8:15PM Sep 18, 2017Highest Observation: 1.62 ft at 8:30PM Sep 18, 2017Highest Observation: 1.62 ft at 8:45PM Sep 18, 2017Highest Observation: 1.62 ft at 9:00PM Sep 18, 2017Highest Observation: 1.62 ft at 9:15PM Sep 18, 2017Highest Observation: 1.62 ft at 9:30PM Sep 18, 2017Highest Observation: 1.62 ft at 9:45PM Sep 18, 2017Highest Observation: 1.62 ft at 10:00PM Sep 18, 2017Highest Observation: 1.62 ft at 10:15PM Sep 18, 2017Highest Observation: 1.62 ft at 10:30PM Sep 18, 2017Highest Observation: 1.62 ft at 10:45PM Sep 18, 2017Highest Observation: 1.62 ft at 11:00PM Sep 18, 2017Highest Observation: 1.62 ft at 11:15PM Sep 18, 2017Highest Observation: 1.62 ft at 11:30PM Sep 18, 2017Highest Observation: 1.62 ft at 11:45PM Sep 18, 2017Highest Observation: 1.62 ft at 12:00AM Sep 19, 2017Highest Observation: 1.62 ft at 12:15AM Sep 19, 2017Highest Observation: 1.62 ft at 12:30AM Sep 19, 2017Highest Observation: 1.62 ft at 12:45AM Sep 19, 2017Highest Observation: 1.62 ft at 1:00AM Sep 19, 2017Highest Observation: 1.62 ft at 1:15AM Sep 19, 2017Highest Observation: 1.62 ft at 1:30AM Sep 19, 2017Highest Observation: 1.62 ft at 1:45AM Sep 19, 2017Highest Observation: 1.62 ft at 2:00AM Sep 19, 2017Highest Observation: 1.62 ft at 2:15AM Sep 19, 2017Highest Observation: 1.62 ft at 2:30AM Sep 19, 2017Highest Observation: 1.62 ft at 2:45AM Sep 19, 2017Highest Observation: 1.62 ft at 3:00AM Sep 19, 2017Highest Observation: 1.62 ft at 3:15AM Sep 19, 2017Highest Observation: 1.62 ft at 3:30AM Sep 19, 2017Highest Observation: 1.62 ft at 3:45AM Sep 19, 2017Highest Observation: 1.62 ft at 4:00AM Sep 19, 2017Highest Observation: 1.62 ft at 4:15AM Sep 19, 2017Highest Observation: 1.62 ft at 4:30AM Sep 19, 2017Highest Observation: 1.62 ft at 4:45AM Sep 19, 2017Highest Observation: 1.62 ft at 5:00AM Sep 19, 2017Highest Observation: 1.62 ft at 5:15AM Sep 19, 2017Highest Observation: 1.62 ft at 5:30AM Sep 19, 2017Highest Observation: 1.62 ft at 5:45AM Sep 19, 2017Highest Observation: 1.62 ft at 6:00AM Sep 19, 2017Highest Observation: 1.62 ft at 6:15AM Sep 19, 2017Highest Observation: 1.62 ft at 6:30AM Sep 19, 2017Highest Observation: 1.62 ft at 6:45AM Sep 19, 2017Highest Observation: 1.62 ft at 7:00AM Sep 19, 2017Highest Observation: 1.62 ft at 7:15AM Sep 19, 2017Highest Observation: 1.62 ft at 7:30AM Sep 19, 2017Highest Observation: 1.62 ft at 7:45AM Sep 19, 2017Highest Observation: 1.62 ft at 8:00AM Sep 19, 2017Highest Observation: 1.62 ft at 8:15AM Sep 19, 2017Highest Observation: 1.62 ft at 8:30AM Sep 19, 2017Highest Observation: 1.62 ft at 8:45AM Sep 19, 2017Highest Observation: 1.62 ft at 9:00AM Sep 19, 2017Highest Observation: 1.62 ft at 9:15AM Sep 19, 2017Highest Observation: 1.62 ft at 9:30AM Sep 19, 2017Highest Observation: 1.62 ft at 9:45AM Sep 19, 2017Highest Observation: 1.62 ft at 10:00AM Sep 19, 2017Highest Observation: 1.62 ft at 10:15AM Sep 19, 2017Highest Observation: 1.62 ft at 10:30AM Sep 19, 2017Highest Observation: 1.62 ft at 10:45AM Sep 19, 2017Highest Observation: 1.62 ft at 11:00AM Sep 19, 2017Highest Observation: 1.62 ft at 11:15AM Sep 19, 2017Highest Observation: 1.62 ft at 11:30AM Sep 19, 2017Highest Observation: 1.62 ft at 11:45AM Sep 19, 2017Highest Observation: 1.62 ft at 12:00PM Sep 19, 2017Highest Observation: 1.62 ft at 12:15PM Sep 19, 2017Highest Observation: 1.62 ft at 12:30PM Sep 19, 2017Highest Observation: 1.62 ft at 12:45PM Sep 19, 2017Highest Observation: 1.62 ft at 1:00PM Sep 19, 2017Highest Observation: 1.62 ft at 1:15PM Sep 19, 2017Highest Observation: 1.62 ft at 1:30PM Sep 19, 2017Highest Observation: 1.62 ft at 1:45PM Sep 19, 2017Highest Observation: 1.62 ft at 2:00PM Sep 19, 2017Highest Observation: 1.62 ft at 2:15PM Sep 19, 2017Highest Observation: 1.62 ft at 2:30PM Sep 19, 2017Highest Observation: 1.62 ft at 2:45PM Sep 19, 2017Highest Observation: 1.62 ft at 3:00PM Sep 19, 2017Highest Observation: 1.62 ft at 3:15PM Sep 19, 2017Highest Observation: 1.62 ft at 3:30PM Sep 19, 2017Highest Observation: 1.62 ft at 3:45PM Sep 19, 2017Highest Observation: 1.62 ft at 4:00PM Sep 19, 2017Highest Observation: 1.62 ft at 4:15PM Sep 19, 2017Highest Observation: 1.62 ft at 4:30PM Sep 19, 2017Highest Observation: 1.62 ft at 4:45PM Sep 19, 2017Highest Observation: 1.62 ft at 5:00PM Sep 19, 2017Highest Observation: 1.62 ft at 5:15PM Sep 19, 2017Highest Observation: 1.62 ft at 5:30PM Sep 19, 2017Highest Observation: 1.62 ft at 5:45PM Sep 19, 2017Highest Observation: 1.62 ft at 6:00PM Sep 19, 2017Highest Observation: 1.62 ft at 6:15PM Sep 19, 2017Highest Observation: 1.62 ft at 6:30PM Sep 19, 2017Highest Observation: 1.62 ft at 6:45PM Sep 19, 2017Highest Observation: 1.62 ft at 7:00PM Sep 19, 2017Highest Observation: 1.62 ft at 7:15PM Sep 19, 2017Highest Observation: 1.62 ft at 7:30PM Sep 19, 2017Highest Observation: 1.62 ft at 7:45PM Sep 19, 2017Highest Observation: 1.62 ft at 8:00PM Sep 19, 2017Highest Observation: 1.62 ft at 8:15PM Sep 19, 2017Highest Observation: 1.62 ft at 8:30PM Sep 19, 2017Highest Observation: 1.62 ft at 8:45PM Sep 19, 2017Highest Observation: 1.62 ft at 9:00PM Sep 19, 2017Highest Observation: 1.62 ft at 9:15PM Sep 19, 2017Highest Observation: 1.62 ft at 9:30PM Sep 19, 2017Highest Observation: 1.62 ft at 9:45PM Sep 19, 2017Highest Observation: 1.62 ft at 10:00PM Sep 19, 2017Highest Observation: 1.62 ft at 10:15PM Sep 19, 2017Highest Observation: 1.62 ft at 10:30PM Sep 19, 2017Highest Observation: 1.62 ft at 10:45PM Sep 19, 2017Highest Observation: 1.62 ft at 11:00PM Sep 19, 2017Highest Observation: 1.62 ft at 11:15PM Sep 19, 2017Highest Observation: 1.62 ft at 11:30PM Sep 19, 2017Highest Observation: 1.62 ft at 11:45PM Sep 19, 2017Highest Observation: 1.62 ft at 12:00AM Sep 20, 2017Highest Observation: 1.62 ft at 12:15AM Sep 20, 2017Highest Observation: 1.62 ft at 12:30AM Sep 20, 2017Highest Observation: 1.62 ft at 12:45AM Sep 20, 2017Highest Observation: 1.62 ft at 1:00AM Sep 20, 2017Highest Observation: 1.62 ft at 1:15AM Sep 20, 2017Highest Observation: 1.62 ft at 1:30AM Sep 20, 2017Highest Observation: 1.62 ft at 1:45AM Sep 20, 2017Highest Observation: 1.62 ft at 2:00AM Sep 20, 2017Highest Observation: 1.62 ft at 2:15AM Sep 20, 2017Highest Observation: 1.62 ft at 2:30AM Sep 20, 2017Highest Observation: 1.62 ft at 2:45AM Sep 20, 2017Highest Observation: 1.62 ft at 3:00AM Sep 20, 2017Highest Observation: 1.62 ft at 3:15AM Sep 20, 2017Highest Observation: 1.62 ft at 3:30AM Sep 20, 2017Highest Observation: 1.62 ft at 3:45AM Sep 20, 2017Highest Observation: 1.62 ft at 4:00AM Sep 20, 2017Highest Observation: 1.62 ft at 4:15AM Sep 20, 2017Highest Observation: 1.62 ft at 4:30AM Sep 20, 2017Highest Observation: 1.62 ft at 4:45AM Sep 20, 2017Highest Observation: 1.62 ft at 5:00AM Sep 20, 2017Highest Observation: 1.62 ft at 5:15AM Sep 20, 2017Highest Observation: 1.62 ft at 5:30AM Sep 20, 2017Highest Observation: 1.62 ft at 5:45AM Sep 20, 2017Highest Observation: 1.62 ft at 6:00AM Sep 20, 2017Highest Observation: 1.62 ft at 6:15AM Sep 20, 2017Highest Observation: 1.62 ft at 6:30AM Sep 20, 2017Highest Observation: 1.62 ft at 6:45AM Sep 20, 2017Highest Observation: 1.62 ft at 7:00AM Sep 20, 2017Highest Observation: 1.62 ft at 7:15AM Sep 20, 2017Highest Observation: 1.62 ft at 7:30AM Sep 20, 2017Highest Observation: 1.62 ft at 7:45AM Sep 20, 2017Highest Observation: 1.62 ft at 8:00AM Sep 20, 2017Highest Observation: 1.62 ft at 8:15AM Sep 20, 2017Highest Observation: 1.62 ft at 8:30AM Sep 20, 2017Highest Observation: 1.62 ft at 8:45AM Sep 20, 2017Highest Observation: 1.62 ft at 9:00AM Sep 20, 2017Highest Observation: 1.62 ft at 9:15AM Sep 20, 2017Highest Observation: 1.62 ft at 9:30AM Sep 20, 2017Highest Observation: 1.62 ft at 9:45AM Sep 20, 2017Highest Observation: 1.62 ft at 10:00AM Sep 20, 2017Highest Observation: 1.62 ft at 10:15AM Sep 20, 2017Highest Observation: 1.62 ft at 10:30AM Sep 20, 2017Highest Observation: 1.62 ft at 10:45AM Sep 20, 2017Highest Observation: 1.62 ft at 11:00AM Sep 20, 2017Highest Observation: 1.62 ft at 11:15AM Sep 20, 2017Highest Observation: 1.62 ft at 11:30AM Sep 20, 2017Highest Observation: 1.62 ft at 11:45AM Sep 20, 2017Highest Observation: 1.62 ft at 12:00PM Sep 20, 2017Highest Observation: 1.62 ft at 12:15PM Sep 20, 2017Highest Observation: 1.62 ft at 12:30PM Sep 20, 2017Highest Observation: 1.62 ft at 12:45PM Sep 20, 2017Highest Observation: 1.62 ft at 1:00PM Sep 20, 2017Highest Observation: 1.62 ft at 1:15PM Sep 20, 2017Highest Observation: 1.62 ft at 1:30PM Sep 20, 2017Highest Observation: 1.62 ft at 1:45PM Sep 20, 2017Highest Observation: 1.62 ft at 2:00PM Sep 20, 2017Highest Observation: 1.62 ft at 2:15PM Sep 20, 2017Highest Observation: 1.62 ft at 2:30PM Sep 20, 2017Highest Observation: 1.62 ft at 2:45PM Sep 20, 2017Highest Observation: 1.62 ft at 3:00PM Sep 20, 2017Highest Observation: 1.62 ft at 3:15PM Sep 20, 2017Highest Observation: 1.62 ft at 3:30PM Sep 20, 2017Highest Observation: 1.62 ft at 3:45PM Sep 20, 2017Highest Observation: 1.62 ft at 4:00PM Sep 20, 2017Highest Observation: 1.62 ft at 4:15PM Sep 20, 2017Highest Observation: 1.62 ft at 4:30PM Sep 20, 2017Highest Observation: 1.62 ft at 4:45PM Sep 20, 2017Highest Observation: 1.62 ft at 5:00PM Sep 20, 2017Highest Observation: 1.62 ft at 5:15PM Sep 20, 2017Highest Observation: 1.62 ft at 5:30PM Sep 20, 2017Highest Observation: 1.62 ft at 5:45PM Sep 20, 2017Highest Observation: 1.62 ft at 6:00PM Sep 20, 2017Highest Observation: 1.62 ft at 6:15PM Sep 20, 2017Highest Observation: 1.62 ft at 6:30PM Sep 20, 2017Highest Observation: 1.62 ft at 6:45PM Sep 20, 2017Highest Observation: 1.62 ft at 7:00PM Sep 20, 2017Highest Observation: 1.62 ft at 7:15PM Sep 20, 2017Highest Observation: 1.62 ft at 7:30PM Sep 20, 2017Highest Observation: 1.62 ft at 7:45PM Sep 20, 2017Highest Observation: 1.62 ft at 8:00PM Sep 20, 2017Highest Observation: 1.62 ft at 8:15PM Sep 20, 2017Highest Observation: 1.62 ft at 8:30PM Sep 20, 2017Highest Observation: 1.62 ft at 8:45PM Sep 20, 2017Highest Observation: 1.62 ft at 9:00PM Sep 20, 2017Highest Observation: 1.62 ft at 9:15PM Sep 20, 2017Highest Observation: 1.62 ft at 9:30PM Sep 20, 2017Highest Observation: 1.62 ft at 9:45PM Sep 20, 2017Highest Observation: 1.62 ft at 10:00PM Sep 20, 2017Highest Observation: 1.62 ft at 10:15PM Sep 20, 2017Highest Observation: 1.62 ft at 10:30PM Sep 20, 2017Highest Observation: 1.62 ft at 10:45PM Sep 20, 2017Highest Observation: 1.62 ft at 11:00PM Sep 20, 2017Highest Observation: 1.62 ft at 11:15PM Sep 20, 2017Highest Observation: 1.62 ft at 11:30PM Sep 20, 2017Highest Observation: 1.62 ft at 11:45PM Sep 20, 2017Highest Observation: 1.62 ft at 12:00AM Sep 21, 2017Highest Observation: 1.62 ft at 12:15AM Sep 21, 2017Highest Observation: 1.62 ft at 12:30AM Sep 21, 2017Highest Observation: 1.62 ft at 12:45AM Sep 21, 2017Highest Observation: 1.62 ft at 1:00AM Sep 21, 2017Highest Observation: 1.62 ft at 1:15AM Sep 21, 2017Highest Observation: 1.62 ft at 1:30AM Sep 21, 2017Highest Observation: 1.62 ft at 1:45AM Sep 21, 2017Highest Observation: 1.62 ft at 2:00AM Sep 21, 2017Highest Forecast: 1.6 ft 8:00AM Sep 21, 2017Highest Forecast: 1.6 ft 2:00PM Sep 21, 2017Highest Forecast: 1.6 ft 8:00PM Sep 21, 2017Highest Forecast: 1.6 ft 2:00AM Sep 22, 2017Highest Forecast: 1.6 ft 8:00AM Sep 22, 2017Highest Forecast: 1.6 ft 2:00PM Sep 22, 2017Highest Forecast: 1.6 ft 8:00PM Sep 22, 2017Highest Forecast: 1.6 ft 2:00AM Sep 23, 2017Highest Forecast: 1.6 ft 8:00AM Sep 23, 2017USGS--Water Resources of the United StatesBONN4(plotting HGIRG) Graph Created (2:33AM Sep 21, 2017)ObservedForecast (issued 9:38AM Sep 20)Latest observed value: 1.62 ft at 2:00 AM EDT 21-Sep-2017. Flood Stage is 5 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Rockaway River at Boonton below reservoir are issued routinely year-round.
Return to Area Map
Upstream Gauge - at Boonton Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 8
Moderate Flood Stage: 7
Flood Stage: 5
Action Stage: 4.5
Low Stage (in feet): 0

Historic Crests
(1) 9.73 ft on 08/29/2011
(2) 8.30 ft on 01/25/1979
(3) 8.20 ft on 05/29/1968
(4) 8.17 ft on 04/06/1984
(5) 8.12 ft on 03/14/2010
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 7.23 ft on 09/09/2011
(2) 9.73 ft on 08/29/2011
(3) 6.75 ft on 04/17/2011
(4) 7.95 ft on 03/12/2011
(5) 6.92 ft on 03/07/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
8 Due to high water on the Rockaway River, water backs up through storm drains and flood portions of Lancaster Avenue, Normandy Drive, Buckingham Circle, Sheffield Place, Manchester Drive and Konner Avenue in Montville. High water on the Rockaway also backs up Hatfield Creek in Montville and causes additional flooding on Lancaster Avenue.
7.7 Change Bridge Road in Montville, north of Woodmont Road and south of Stiles Lane, floods. River Road in Montville floods near Condurso's Garden Center. Both roads are closed.
6 Flooding occurs on Vail Road in Montville. The Road heading into Parsippany is subject to closures.
About This Location Collapse

Latitude: 40.896944° N, Longitude: 74.394722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 5 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 29 195.68 ft 200.68 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 10:38 PM
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