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Hydrograph River at a Glance Download
Rockaway River at Boonton below reservoir Stage (ft)Flow (kcfs)Observed: 2.52 ft at 8:30AM Apr 29, 2021Observed: 2.52 ft at 8:45AM Apr 29, 2021Observed: 2.51 ft at 9:00AM Apr 29, 2021Observed: 2.51 ft at 9:15AM Apr 29, 2021Observed: 2.52 ft at 9:30AM Apr 29, 2021Observed: 2.51 ft at 9:45AM Apr 29, 2021Observed: 2.51 ft at 10:00AM Apr 29, 2021Observed: 2.5 ft at 10:15AM Apr 29, 2021Observed: 2.51 ft at 10:30AM Apr 29, 2021Observed: 2.5 ft at 10:45AM Apr 29, 2021Observed: 2.5 ft at 11:00AM Apr 29, 2021Observed: 2.5 ft at 11:15AM Apr 29, 2021Observed: 2.51 ft at 11:30AM Apr 29, 2021Observed: 2.51 ft at 11:45AM Apr 29, 2021Observed: 2.51 ft at 12:00PM Apr 29, 2021Observed: 2.52 ft at 12:15PM Apr 29, 2021Observed: 2.52 ft at 12:30PM Apr 29, 2021Observed: 2.51 ft at 12:45PM Apr 29, 2021Observed: 2.51 ft at 1:00PM Apr 29, 2021Observed: 2.51 ft at 1:15PM Apr 29, 2021Observed: 2.52 ft at 1:30PM Apr 29, 2021Observed: 2.52 ft at 1:45PM Apr 29, 2021Observed: 2.52 ft at 2:00PM Apr 29, 2021Observed: 2.52 ft at 2:15PM Apr 29, 2021Observed: 2.52 ft at 2:30PM Apr 29, 2021Observed: 2.51 ft at 2:45PM Apr 29, 2021Observed: 2.54 ft at 3:00PM Apr 29, 2021Observed: 2.56 ft at 3:15PM Apr 29, 2021Observed: 2.55 ft at 3:30PM Apr 29, 2021Observed: 2.54 ft at 3:45PM Apr 29, 2021Observed: 2.53 ft at 4:00PM Apr 29, 2021Observed: 2.52 ft at 4:15PM Apr 29, 2021Observed: 2.51 ft at 4:30PM Apr 29, 2021Observed: 2.51 ft at 4:45PM Apr 29, 2021Observed: 2.52 ft at 5:00PM Apr 29, 2021Observed: 2.52 ft at 5:15PM Apr 29, 2021Observed: 2.51 ft at 5:30PM Apr 29, 2021Observed: 2.5 ft at 5:45PM Apr 29, 2021Observed: 2.51 ft at 6:00PM Apr 29, 2021Observed: 2.51 ft at 6:15PM Apr 29, 2021Observed: 2.5 ft at 6:30PM Apr 29, 2021Observed: 2.49 ft at 6:45PM Apr 29, 2021Observed: 2.48 ft at 7:00PM Apr 29, 2021Observed: 2.48 ft at 7:15PM Apr 29, 2021Observed: 2.47 ft at 7:30PM Apr 29, 2021Observed: 2.46 ft at 7:45PM Apr 29, 2021Observed: 2.46 ft at 8:00PM Apr 29, 2021Observed: 2.46 ft at 8:15PM Apr 29, 2021Observed: 2.46 ft at 8:30PM Apr 29, 2021Observed: 2.46 ft at 8:45PM Apr 29, 2021Observed: 2.46 ft at 9:00PM Apr 29, 2021Observed: 2.47 ft at 9:15PM Apr 29, 2021Observed: 2.47 ft at 9:30PM Apr 29, 2021Observed: 2.48 ft at 9:45PM Apr 29, 2021Observed: 2.5 ft at 10:00PM Apr 29, 2021Observed: 2.51 ft at 10:15PM Apr 29, 2021Observed: 2.5 ft at 10:30PM Apr 29, 2021Observed: 2.49 ft at 10:45PM Apr 29, 2021Observed: 2.49 ft at 11:00PM Apr 29, 2021Observed: 2.49 ft at 11:15PM Apr 29, 2021Observed: 2.49 ft at 11:30PM Apr 29, 2021Observed: 2.49 ft at 11:45PM Apr 29, 2021Observed: 2.5 ft at 12:00AM Apr 30, 2021Observed: 2.51 ft at 12:15AM Apr 30, 2021Observed: 2.51 ft at 12:30AM Apr 30, 2021Observed: 2.51 ft at 12:45AM Apr 30, 2021Observed: 2.5 ft at 1:00AM Apr 30, 2021Observed: 2.5 ft at 1:15AM Apr 30, 2021Observed: 2.49 ft at 1:30AM Apr 30, 2021Observed: 2.47 ft at 1:45AM Apr 30, 2021Observed: 2.47 ft at 2:00AM Apr 30, 2021Observed: 2.49 ft at 2:15AM Apr 30, 2021Observed: 2.49 ft at 2:30AM Apr 30, 2021Observed: 2.48 ft at 2:45AM Apr 30, 2021Observed: 2.49 ft at 3:00AM Apr 30, 2021Observed: 2.48 ft at 3:15AM Apr 30, 2021Observed: 2.49 ft at 3:30AM Apr 30, 2021Observed: 2.5 ft at 3:45AM Apr 30, 2021Observed: 2.49 ft at 4:00AM Apr 30, 2021Observed: 2.48 ft at 4:15AM Apr 30, 2021Observed: 2.47 ft at 4:30AM Apr 30, 2021Observed: 2.48 ft at 4:45AM Apr 30, 2021Observed: 2.49 ft at 5:00AM Apr 30, 2021Observed: 2.49 ft at 5:15AM Apr 30, 2021Observed: 2.49 ft at 5:30AM Apr 30, 2021Observed: 2.49 ft at 5:45AM Apr 30, 2021Observed: 2.5 ft at 6:00AM Apr 30, 2021Observed: 2.49 ft at 6:15AM Apr 30, 2021Observed: 2.49 ft at 6:30AM Apr 30, 2021Observed: 2.48 ft at 6:45AM Apr 30, 2021Observed: 2.47 ft at 7:00AM Apr 30, 2021Observed: 2.48 ft at 7:15AM Apr 30, 2021Observed: 2.48 ft at 7:30AM Apr 30, 2021Observed: 2.52 ft at 7:45AM Apr 30, 2021Observed: 2.5 ft at 8:00AM Apr 30, 2021Observed: 2.5 ft at 8:15AM Apr 30, 2021Observed: 2.51 ft at 8:30AM Apr 30, 2021Observed: 2.55 ft at 8:45AM Apr 30, 2021Observed: 2.49 ft at 9:00AM Apr 30, 2021Observed: 2.49 ft at 9:15AM Apr 30, 2021Observed: 2.49 ft at 9:30AM Apr 30, 2021Observed: 2.52 ft at 9:45AM Apr 30, 2021Observed: 2.52 ft at 10:00AM Apr 30, 2021Observed: 2.52 ft at 10:15AM Apr 30, 2021Observed: 2.52 ft at 10:30AM Apr 30, 2021Observed: 2.53 ft at 10:45AM Apr 30, 2021Observed: 2.53 ft at 11:00AM Apr 30, 2021Observed: 2.51 ft at 11:15AM Apr 30, 2021Observed: 2.53 ft at 11:30AM Apr 30, 2021Observed: 2.52 ft at 11:45AM Apr 30, 2021Observed: 2.55 ft at 12:00PM Apr 30, 2021Observed: 2.56 ft at 12:15PM Apr 30, 2021Observed: 2.53 ft at 12:30PM Apr 30, 2021Observed: 2.53 ft at 12:45PM Apr 30, 2021Observed: 2.52 ft at 1:00PM Apr 30, 2021Observed: 2.51 ft at 1:15PM Apr 30, 2021Observed: 2.51 ft at 1:30PM Apr 30, 2021Highest Observation: 2.6 ft at 1:45PM Apr 30, 2021Observed: 2.55 ft at 2:00PM Apr 30, 2021Observed: 2.49 ft at 2:15PM Apr 30, 2021Observed: 2.47 ft at 2:30PM Apr 30, 2021Observed: 2.49 ft at 2:45PM Apr 30, 2021Observed: 2.49 ft at 3:00PM Apr 30, 2021Observed: 2.47 ft at 3:15PM Apr 30, 2021Observed: 2.48 ft at 3:30PM Apr 30, 2021Observed: 2.52 ft at 3:45PM Apr 30, 2021Observed: 2.46 ft at 4:00PM Apr 30, 2021Observed: 2.44 ft at 4:15PM Apr 30, 2021Observed: 2.43 ft at 4:30PM Apr 30, 2021Observed: 2.44 ft at 4:45PM Apr 30, 2021Observed: 2.43 ft at 5:00PM Apr 30, 2021Observed: 2.46 ft at 5:15PM Apr 30, 2021Observed: 2.47 ft at 5:30PM Apr 30, 2021Observed: 2.53 ft at 5:45PM Apr 30, 2021Observed: 2.51 ft at 6:00PM Apr 30, 2021Observed: 2.46 ft at 6:15PM Apr 30, 2021Observed: 2.47 ft at 6:30PM Apr 30, 2021Observed: 2.49 ft at 6:45PM Apr 30, 2021Observed: 2.45 ft at 7:00PM Apr 30, 2021Observed: 2.4 ft at 7:15PM Apr 30, 2021Observed: 2.42 ft at 7:30PM Apr 30, 2021Observed: 2.39 ft at 7:45PM Apr 30, 2021Observed: 2.42 ft at 8:00PM Apr 30, 2021Observed: 2.4 ft at 8:15PM Apr 30, 2021Observed: 2.41 ft at 8:30PM Apr 30, 2021Observed: 2.42 ft at 8:45PM Apr 30, 2021Observed: 2.43 ft at 9:00PM Apr 30, 2021Observed: 2.41 ft at 9:15PM Apr 30, 2021Observed: 2.42 ft at 9:30PM Apr 30, 2021Observed: 2.42 ft at 9:45PM Apr 30, 2021Observed: 2.39 ft at 10:00PM Apr 30, 2021Observed: 2.41 ft at 10:15PM Apr 30, 2021Observed: 2.41 ft at 10:30PM Apr 30, 2021Observed: 2.44 ft at 10:45PM Apr 30, 2021Observed: 2.39 ft at 11:00PM Apr 30, 2021Observed: 2.4 ft at 11:15PM Apr 30, 2021Observed: 2.43 ft at 11:30PM Apr 30, 2021Observed: 2.4 ft at 11:45PM Apr 30, 2021Observed: 2.4 ft at 12:00AM May 01, 2021Observed: 2.46 ft at 12:15AM May 01, 2021Observed: 2.45 ft at 12:30AM May 01, 2021Observed: 2.42 ft at 12:45AM May 01, 2021Observed: 2.4 ft at 1:00AM May 01, 2021Observed: 2.41 ft at 1:15AM May 01, 2021Observed: 2.42 ft at 1:30AM May 01, 2021Observed: 2.44 ft at 1:45AM May 01, 2021Observed: 2.42 ft at 2:00AM May 01, 2021Observed: 2.42 ft at 2:15AM May 01, 2021Observed: 2.41 ft at 2:30AM May 01, 2021Observed: 2.4 ft at 2:45AM May 01, 2021Observed: 2.39 ft at 3:00AM May 01, 2021Observed: 2.42 ft at 3:15AM May 01, 2021Observed: 2.4 ft at 3:30AM May 01, 2021Observed: 2.39 ft at 3:45AM May 01, 2021Observed: 2.4 ft at 4:00AM May 01, 2021Observed: 2.41 ft at 4:15AM May 01, 2021Observed: 2.4 ft at 4:30AM May 01, 2021Observed: 2.39 ft at 4:45AM May 01, 2021Observed: 2.39 ft at 5:00AM May 01, 2021Observed: 2.38 ft at 5:15AM May 01, 2021Observed: 2.37 ft at 5:30AM May 01, 2021Observed: 2.37 ft at 5:45AM May 01, 2021Observed: 2.38 ft at 6:00AM May 01, 2021Observed: 2.37 ft at 6:15AM May 01, 2021Observed: 2.36 ft at 6:30AM May 01, 2021Observed: 2.36 ft at 6:45AM May 01, 2021Observed: 2.34 ft at 7:00AM May 01, 2021Observed: 2.35 ft at 7:15AM May 01, 2021Observed: 2.35 ft at 7:30AM May 01, 2021Observed: 2.36 ft at 7:45AM May 01, 2021Observed: 2.36 ft at 8:00AM May 01, 2021Observed: 2.36 ft at 8:15AM May 01, 2021Observed: 2.36 ft at 8:30AM May 01, 2021Observed: 2.36 ft at 8:45AM May 01, 2021Observed: 2.35 ft at 9:00AM May 01, 2021Observed: 2.36 ft at 9:15AM May 01, 2021Observed: 2.38 ft at 9:30AM May 01, 2021Observed: 2.36 ft at 9:45AM May 01, 2021Observed: 2.35 ft at 10:00AM May 01, 2021Observed: 2.36 ft at 10:15AM May 01, 2021Observed: 2.37 ft at 10:30AM May 01, 2021Observed: 2.37 ft at 10:45AM May 01, 2021Observed: 2.39 ft at 11:00AM May 01, 2021Observed: 2.41 ft at 11:15AM May 01, 2021Observed: 2.39 ft at 11:30AM May 01, 2021Observed: 2.37 ft at 11:45AM May 01, 2021Observed: 2.36 ft at 12:00PM May 01, 2021Observed: 2.34 ft at 12:15PM May 01, 2021Observed: 2.37 ft at 12:30PM May 01, 2021Observed: 2.36 ft at 12:45PM May 01, 2021Observed: 2.35 ft at 1:00PM May 01, 2021Observed: 2.36 ft at 1:15PM May 01, 2021Observed: 2.35 ft at 1:30PM May 01, 2021Observed: 2.34 ft at 1:45PM May 01, 2021Observed: 2.33 ft at 2:00PM May 01, 2021Observed: 2.36 ft at 2:15PM May 01, 2021Observed: 2.34 ft at 2:30PM May 01, 2021Observed: 2.32 ft at 2:45PM May 01, 2021Observed: 2.32 ft at 3:00PM May 01, 2021Observed: 2.29 ft at 4:15PM May 01, 2021Observed: 2.31 ft at 4:30PM May 01, 2021Observed: 2.3 ft at 4:45PM May 01, 2021Observed: 2.3 ft at 5:00PM May 01, 2021Observed: 2.32 ft at 5:15PM May 01, 2021Observed: 2.32 ft at 5:30PM May 01, 2021Observed: 2.32 ft at 5:45PM May 01, 2021Observed: 2.31 ft at 6:00PM May 01, 2021Observed: 2.3 ft at 6:15PM May 01, 2021Observed: 2.3 ft at 6:30PM May 01, 2021Observed: 2.3 ft at 6:45PM May 01, 2021Observed: 2.3 ft at 7:00PM May 01, 2021Observed: 2.3 ft at 7:15PM May 01, 2021Observed: 2.3 ft at 7:30PM May 01, 2021Observed: 2.29 ft at 7:45PM May 01, 2021Observed: 2.29 ft at 8:00PM May 01, 2021Observed: 2.29 ft at 8:15PM May 01, 2021Observed: 2.29 ft at 8:30PM May 01, 2021Observed: 2.29 ft at 8:45PM May 01, 2021Observed: 2.29 ft at 9:00PM May 01, 2021Observed: 2.29 ft at 9:15PM May 01, 2021Observed: 2.29 ft at 9:30PM May 01, 2021Observed: 2.29 ft at 9:45PM May 01, 2021Observed: 2.29 ft at 10:00PM May 01, 2021Observed: 2.3 ft at 10:15PM May 01, 2021Observed: 2.3 ft at 10:30PM May 01, 2021Observed: 2.3 ft at 10:45PM May 01, 2021Observed: 2.3 ft at 11:00PM May 01, 2021Observed: 2.31 ft at 11:15PM May 01, 2021Observed: 2.31 ft at 11:30PM May 01, 2021Observed: 2.31 ft at 11:45PM May 01, 2021Observed: 2.31 ft at 12:00AM May 02, 2021Observed: 2.31 ft at 12:15AM May 02, 2021Observed: 2.31 ft at 12:30AM May 02, 2021Observed: 2.31 ft at 12:45AM May 02, 2021Observed: 2.32 ft at 1:00AM May 02, 2021Observed: 2.32 ft at 1:15AM May 02, 2021Observed: 2.32 ft at 1:30AM May 02, 2021Observed: 2.33 ft at 1:45AM May 02, 2021Observed: 2.33 ft at 2:00AM May 02, 2021Observed: 2.34 ft at 2:15AM May 02, 2021Observed: 2.35 ft at 2:30AM May 02, 2021Observed: 2.37 ft at 2:45AM May 02, 2021Observed: 2.37 ft at 3:00AM May 02, 2021Observed: 2.37 ft at 3:15AM May 02, 2021Observed: 2.36 ft at 3:30AM May 02, 2021Observed: 2.35 ft at 3:45AM May 02, 2021Observed: 2.34 ft at 4:00AM May 02, 2021Observed: 2.34 ft at 4:15AM May 02, 2021Observed: 2.33 ft at 4:30AM May 02, 2021Observed: 2.33 ft at 4:45AM May 02, 2021Observed: 2.33 ft at 5:00AM May 02, 2021Observed: 2.33 ft at 5:15AM May 02, 2021Observed: 2.32 ft at 5:30AM May 02, 2021Observed: 2.31 ft at 5:45AM May 02, 2021Observed: 2.31 ft at 6:00AM May 02, 2021Observed: 2.3 ft at 6:15AM May 02, 2021Observed: 2.3 ft at 6:30AM May 02, 2021Observed: 2.3 ft at 6:45AM May 02, 2021Observed: 2.3 ft at 7:00AM May 02, 2021Highest Forecast: 2.3 ft 2:00PM May 02, 2021Highest Forecast: 2.3 ft 8:00PM May 02, 2021Highest Forecast: 2.3 ft 2:00AM May 03, 2021Highest Forecast: 2.3 ft 8:00AM May 03, 2021Highest Forecast: 2.3 ft 2:00PM May 03, 2021Highest Forecast: 2.3 ft 8:00PM May 03, 2021Forecast: 2.2 ft 2:00AM May 04, 2021Highest Forecast: 2.3 ft 8:00AM May 04, 2021USGS--Water Resources of the United StatesBONN4(plotting HGIRG) Graph Created (8:18AM May 2, 2021)ObservedForecast (issued 10:14AM May 1)Latest observed value: 2.3 ft at 7:00 AM EDT 2-May-2021. Flood Stage is 5 ft
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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) 5.34 ft on 12/26/2020
(2) 5.00 ft on 12/01/2020
(3) 5.63 ft on 12/22/2018
(4) 5.14 ft on 11/27/2018
(5) 7.23 ft on 09/09/2011
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
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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