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This probabilistic forecast is issued by the Middle Atlantic River Forecast Center.
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About this graph
Forecasts for the Rockaway River at Boonton above reservoir are issued routinely year-round.
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Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 7
Moderate Flood Stage: 6
Flood Stage: 4.5
Action Stage: 3.5
Low Stage (in feet): 0

Historic Crests
(1) 3.70 ft on 05/01/2014

(P): Preliminary values subject to further review.

Recent Crests
(1) 3.70 ft on 05/01/2014

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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Gauge LocationGauge Map Marker
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
10 Main Street businesses in Denville experience several feet of water.
9 Businesses on Main Street in Denville begin to flood. Sections of Boonton (municipality) begin to flood.
8 Interstate Route 80 in Denville floods. Portions of Dover Township are under several feet of water.
7 Park's Lake area in Denville is flooded. Residents near Savage Road in Denville take on water. Residential areas in Dover Township adjacent to the river experience significant flooding.
6 Main Street in Rockaway is flooded. Jackson Avenue in Rockaway is flooded. Water backs up and comes through the sewer system. Main Street in Denville begins to flood. Gardner Park in Denville experiences significant flooding. Football and baseball fields are submerged in several feet of water. Portions of Boonton Township begin to flood.
5.5 The main parking lot at St. Clare's Hospital begins to flood.
5 Savage Road and other roads around Gardner Park in Denville flood.
3.5 The Rockaway River leaves its banks and floods adjacent parks and trails in Denville including Gardner park.
2 The Rockaway River leaves its banks and begins to flood the river parking lot at St. Clare's Hospital.

Other Real-time and/or Archive Data Sources:

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) 10 Day (NAEFS) 10 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.
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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