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Delaware River at Montague, NJ (MTGN4)


Data Type




Inundation Levels
NAVD88 Stage

409.0*39.7*
408.0*38.7*
407.2*37.9*
406.5*37.2*
405.7*36.4*
405.0*35.7*
Record Crest: 35.15 ft
404.234.9
403.434.1
402.633.3
401.832.5
401.231.9
400.431.1

Major Flooding Begins

399.630.3
398.729.4
397.828.5

Moderate Flooding Begins

396.927.6
396.026.7
395.225.9

Minor Flooding Begins

394.224.9
393.223.9

Near Flooding Begins

392.323.0
391.422.1
390.321.0
389.520.2
388.719.4
387.918.6
387.017.7

Below Flooding Begins

* = Extended rating
Weather Forecast Office Binghamton, NY Middle Atlantic River Forecast Center
Hydrograph River at a Glance Download Inundation
Mapping
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Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

Current Stage:
8.7 ft at 03/29/2024 04:45:00 UTC
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Inundation Legend
Depth in feet
USGS Gauge Location Gauge Location
What is UTC time? Map Help

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.

Gauge Information Collapse

Map Overlays

Flood Categories (in feet)
Major Flood Stage: 31
Moderate Flood Stage: 28
Flood Stage: 25
Action Stage: 23
Low Stage (in feet): -9999

Historic Crests
(1) 35.15 ft on 08/19/1955
(2) 32.16 ft on 06/29/2006
(3) 31.69 ft on 04/03/2005
(4) 31.10 ft on 10/10/1903
(5) 28.45 ft on 03/18/1936
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 32.16 ft on 06/29/2006
(2) 31.69 ft on 04/03/2005
(3) 28.37 ft on 09/18/2004
(4) 26.66 ft on 01/20/1996
(5) 35.15 ft on 08/19/1955
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Site-specific information:
Flood categories were updated on Aug 6, 2018. Categories for inundation maps will be updated on a date TBD - please only use the "Inundation Levels" option on the inundation mapping tab. These maps represent unobstructed flow conditions and may be unrepresentative when ice jams and/or debris are in place.

Extended rating:
Rating Curve Extension - The Rating Curve Extension is calculated by using either a linear, logarithmic, or hydraulic technique to extend the rating curve above the currently established relationship between stage and flow.

Flood Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
35.2 This is the record flood from the remnants of Hurricane Diane in 1955. Widespread flooding with significant damages occurred on both sides of the river.
32.2 During the flood of June 2006, flooding extended up to Metz Road and covered all of Milford Beach area. Several residences were affected. Mashipacong Island was evacuated, as well as 60 residences on River Road in Montague Township. The Dingman's Ferry bridge sustained damage and was closed.
31.7 Dingman's Ferry bridge is closed at this level. Mashipacong Island has been evacuated in the past. Several properties are flooded on River Road in Montague Township, NJ.
31 Milford Beach area inundated to E. Hartford Street. Parts of River Road in Milford are inundated.
28 Flooding extends up Milford Beach Road and along the lowlands nearest the river. Sawkill Creek backs up toward E. Hartford Street. Parts of River Road in Milford begin to flood.
26.7 Inundation of agricultural and recreational areas nearest the river increases. Some evacuations took place on the New Jersey side of the river during the January 1996 flood.
25 Minor flooding begins in the Milford Beach Park area, including Metcalfe Lane.
Other Data Sources Collapse
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.

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Page last modified: 2-Nov-2020 7:34 PM
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Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.