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Mapping
Ramapo River at Mahwah Stage (ft)Flow (kcfs)Observed: 4.75 ft at 2:45PM Nov 30, 2016Observed: 4.75 ft at 3:00PM Nov 30, 2016Observed: 4.75 ft at 3:15PM Nov 30, 2016Observed: 4.77 ft at 3:30PM Nov 30, 2016Observed: 4.79 ft at 3:45PM Nov 30, 2016Observed: 4.82 ft at 4:00PM Nov 30, 2016Observed: 4.86 ft at 4:15PM Nov 30, 2016Observed: 4.88 ft at 4:30PM Nov 30, 2016Observed: 4.89 ft at 4:45PM Nov 30, 2016Observed: 4.89 ft at 5:00PM Nov 30, 2016Observed: 4.9 ft at 5:15PM Nov 30, 2016Observed: 4.91 ft at 5:30PM Nov 30, 2016Observed: 4.91 ft at 5:45PM Nov 30, 2016Observed: 4.91 ft at 6:00PM Nov 30, 2016Observed: 4.92 ft at 6:15PM Nov 30, 2016Observed: 4.93 ft at 6:30PM Nov 30, 2016Observed: 4.95 ft at 6:45PM Nov 30, 2016Observed: 4.96 ft at 7:00PM Nov 30, 2016Observed: 4.97 ft at 7:15PM Nov 30, 2016Observed: 4.98 ft at 7:30PM Nov 30, 2016Observed: 4.98 ft at 7:45PM Nov 30, 2016Observed: 4.98 ft at 8:00PM Nov 30, 2016Observed: 4.98 ft at 8:15PM Nov 30, 2016Observed: 4.97 ft at 8:30PM Nov 30, 2016Observed: 4.97 ft at 8:45PM Nov 30, 2016Observed: 4.98 ft at 9:00PM Nov 30, 2016Observed: 4.98 ft at 9:15PM Nov 30, 2016Observed: 4.99 ft at 9:30PM Nov 30, 2016Observed: 5 ft at 9:45PM Nov 30, 2016Observed: 5.04 ft at 10:00PM Nov 30, 2016Observed: 5.09 ft at 10:15PM Nov 30, 2016Observed: 5.15 ft at 10:30PM Nov 30, 2016Observed: 5.23 ft at 10:45PM Nov 30, 2016Observed: 5.3 ft at 11:00PM Nov 30, 2016Observed: 5.37 ft at 11:15PM Nov 30, 2016Observed: 5.42 ft at 11:30PM Nov 30, 2016Observed: 5.48 ft at 11:45PM Nov 30, 2016Observed: 5.51 ft at 12:00AM Dec 01, 2016Observed: 5.54 ft at 12:15AM Dec 01, 2016Observed: 5.59 ft at 12:30AM Dec 01, 2016Observed: 5.67 ft at 12:45AM Dec 01, 2016Observed: 5.76 ft at 1:00AM Dec 01, 2016Observed: 5.8 ft at 1:15AM Dec 01, 2016Observed: 5.84 ft at 1:30AM Dec 01, 2016Observed: 5.88 ft at 1:45AM Dec 01, 2016Observed: 5.93 ft at 2:00AM Dec 01, 2016Observed: 5.96 ft at 2:15AM Dec 01, 2016Observed: 5.98 ft at 2:30AM Dec 01, 2016Observed: 6 ft at 2:45AM Dec 01, 2016Observed: 6 ft at 3:00AM Dec 01, 2016Observed: 6 ft at 3:15AM Dec 01, 2016Observed: 5.99 ft at 3:30AM Dec 01, 2016Observed: 5.99 ft at 3:45AM Dec 01, 2016Observed: 5.98 ft at 4:00AM Dec 01, 2016Observed: 5.98 ft at 4:15AM Dec 01, 2016Observed: 5.97 ft at 4:30AM Dec 01, 2016Observed: 5.97 ft at 4:45AM Dec 01, 2016Observed: 5.97 ft at 5:00AM Dec 01, 2016Observed: 5.96 ft at 5:15AM Dec 01, 2016Observed: 5.96 ft at 5:30AM Dec 01, 2016Observed: 5.96 ft at 5:45AM Dec 01, 2016Observed: 5.96 ft at 6:00AM Dec 01, 2016Observed: 5.96 ft at 6:15AM Dec 01, 2016Observed: 5.95 ft at 6:30AM Dec 01, 2016Observed: 5.95 ft at 6:45AM Dec 01, 2016Observed: 5.95 ft at 7:00AM Dec 01, 2016Observed: 5.95 ft at 7:15AM Dec 01, 2016Observed: 5.95 ft at 7:30AM Dec 01, 2016Observed: 5.96 ft at 7:45AM Dec 01, 2016Observed: 5.96 ft at 8:00AM Dec 01, 2016Observed: 5.97 ft at 8:15AM Dec 01, 2016Observed: 5.97 ft at 8:30AM Dec 01, 2016Observed: 5.97 ft at 8:45AM Dec 01, 2016Observed: 5.98 ft at 9:00AM Dec 01, 2016Observed: 5.98 ft at 9:15AM Dec 01, 2016Observed: 5.99 ft at 9:30AM Dec 01, 2016Observed: 6 ft at 9:45AM Dec 01, 2016Observed: 6 ft at 10:00AM Dec 01, 2016Observed: 6.01 ft at 10:15AM Dec 01, 2016Observed: 6.02 ft at 10:30AM Dec 01, 2016Observed: 6.03 ft at 10:45AM Dec 01, 2016Observed: 6.04 ft at 11:00AM Dec 01, 2016Observed: 6.05 ft at 11:15AM Dec 01, 2016Observed: 6.05 ft at 11:30AM Dec 01, 2016Observed: 6.06 ft at 11:45AM Dec 01, 2016Observed: 6.06 ft at 12:00PM Dec 01, 2016Observed: 6.07 ft at 12:15PM Dec 01, 2016Observed: 6.07 ft at 12:30PM Dec 01, 2016Observed: 6.08 ft at 12:45PM Dec 01, 2016Observed: 6.09 ft at 1:00PM Dec 01, 2016Observed: 6.09 ft at 1:15PM Dec 01, 2016Observed: 6.11 ft at 1:30PM Dec 01, 2016Observed: 6.12 ft at 1:45PM Dec 01, 2016Observed: 6.12 ft at 2:00PM Dec 01, 2016Observed: 6.12 ft at 2:15PM Dec 01, 2016Observed: 6.13 ft at 2:30PM Dec 01, 2016Observed: 6.13 ft at 2:45PM Dec 01, 2016Observed: 6.13 ft at 3:00PM Dec 01, 2016Highest Observation: 6.14 ft at 3:15PM Dec 01, 2016Highest Observation: 6.14 ft at 3:30PM Dec 01, 2016Highest Observation: 6.14 ft at 3:45PM Dec 01, 2016Highest Observation: 6.14 ft at 4:00PM Dec 01, 2016Highest Observation: 6.14 ft at 4:15PM Dec 01, 2016Highest Observation: 6.14 ft at 4:30PM Dec 01, 2016Highest Observation: 6.14 ft at 4:45PM Dec 01, 2016Highest Observation: 6.14 ft at 5:00PM Dec 01, 2016Highest Observation: 6.14 ft at 5:15PM Dec 01, 2016Highest Observation: 6.14 ft at 5:30PM Dec 01, 2016Highest Observation: 6.14 ft at 5:45PM Dec 01, 2016Highest Observation: 6.14 ft at 6:00PM Dec 01, 2016Highest Observation: 6.14 ft at 6:15PM Dec 01, 2016Observed: 6.13 ft at 6:30PM Dec 01, 2016Observed: 6.13 ft at 6:45PM Dec 01, 2016Observed: 6.13 ft at 7:00PM Dec 01, 2016Observed: 6.13 ft at 7:15PM Dec 01, 2016Observed: 6.13 ft at 7:30PM Dec 01, 2016Observed: 6.12 ft at 7:45PM Dec 01, 2016Observed: 6.12 ft at 8:00PM Dec 01, 2016Observed: 6.12 ft at 8:15PM Dec 01, 2016Observed: 6.11 ft at 8:30PM Dec 01, 2016Observed: 6.11 ft at 8:45PM Dec 01, 2016Observed: 6.1 ft at 9:00PM Dec 01, 2016Observed: 6.09 ft at 9:15PM Dec 01, 2016Observed: 6.09 ft at 9:30PM Dec 01, 2016Observed: 6.08 ft at 9:45PM Dec 01, 2016Observed: 6.08 ft at 10:00PM Dec 01, 2016Observed: 6.07 ft at 10:15PM Dec 01, 2016Observed: 6.06 ft at 10:30PM Dec 01, 2016Observed: 6.06 ft at 10:45PM Dec 01, 2016Observed: 6.05 ft at 11:00PM Dec 01, 2016Observed: 6.04 ft at 11:15PM Dec 01, 2016Observed: 6.04 ft at 11:30PM Dec 01, 2016Observed: 6.03 ft at 11:45PM Dec 01, 2016Observed: 6.02 ft at 12:00AM Dec 02, 2016Observed: 6.02 ft at 12:15AM Dec 02, 2016Observed: 6.01 ft at 12:30AM Dec 02, 2016Observed: 6 ft at 12:45AM Dec 02, 2016Observed: 5.99 ft at 1:00AM Dec 02, 2016Observed: 5.98 ft at 1:15AM Dec 02, 2016Observed: 5.97 ft at 1:30AM Dec 02, 2016Observed: 5.96 ft at 1:45AM Dec 02, 2016Observed: 5.96 ft at 2:00AM Dec 02, 2016Observed: 5.94 ft at 2:15AM Dec 02, 2016Observed: 5.93 ft at 2:30AM Dec 02, 2016Observed: 5.92 ft at 2:45AM Dec 02, 2016Observed: 5.92 ft at 3:00AM Dec 02, 2016Observed: 5.91 ft at 3:15AM Dec 02, 2016Observed: 5.9 ft at 3:30AM Dec 02, 2016Observed: 5.89 ft at 3:45AM Dec 02, 2016Observed: 5.88 ft at 4:00AM Dec 02, 2016Observed: 5.87 ft at 4:15AM Dec 02, 2016Observed: 5.85 ft at 4:30AM Dec 02, 2016Observed: 5.84 ft at 4:45AM Dec 02, 2016Observed: 5.83 ft at 5:00AM Dec 02, 2016Observed: 5.82 ft at 5:15AM Dec 02, 2016Observed: 5.81 ft at 5:30AM Dec 02, 2016Observed: 5.8 ft at 5:45AM Dec 02, 2016Observed: 5.79 ft at 6:00AM Dec 02, 2016Observed: 5.78 ft at 6:15AM Dec 02, 2016Observed: 5.77 ft at 6:30AM Dec 02, 2016Observed: 5.76 ft at 6:45AM Dec 02, 2016Observed: 5.76 ft at 7:00AM Dec 02, 2016Observed: 5.74 ft at 7:15AM Dec 02, 2016Observed: 5.73 ft at 7:30AM Dec 02, 2016Observed: 5.72 ft at 7:45AM Dec 02, 2016Observed: 5.72 ft at 8:00AM Dec 02, 2016Observed: 5.71 ft at 8:15AM Dec 02, 2016Observed: 5.7 ft at 8:30AM Dec 02, 2016Observed: 5.69 ft at 8:45AM Dec 02, 2016Observed: 5.68 ft at 9:00AM Dec 02, 2016Observed: 5.67 ft at 9:15AM Dec 02, 2016Observed: 5.66 ft at 9:30AM Dec 02, 2016Observed: 5.65 ft at 9:45AM Dec 02, 2016Observed: 5.64 ft at 10:00AM Dec 02, 2016Observed: 5.63 ft at 10:15AM Dec 02, 2016Observed: 5.62 ft at 10:30AM Dec 02, 2016Observed: 5.61 ft at 10:45AM Dec 02, 2016Observed: 5.6 ft at 11:00AM Dec 02, 2016Observed: 5.59 ft at 11:15AM Dec 02, 2016Observed: 5.55 ft at 11:30AM Dec 02, 2016Observed: 5.53 ft at 11:45AM Dec 02, 2016Observed: 5.52 ft at 12:00PM Dec 02, 2016Observed: 5.51 ft at 12:15PM Dec 02, 2016Observed: 5.5 ft at 12:30PM Dec 02, 2016Observed: 5.49 ft at 12:45PM Dec 02, 2016Observed: 5.47 ft at 1:00PM Dec 02, 2016Observed: 5.46 ft at 1:15PM Dec 02, 2016Observed: 5.45 ft at 1:30PM Dec 02, 2016Observed: 5.44 ft at 1:45PM Dec 02, 2016Observed: 5.43 ft at 2:00PM Dec 02, 2016Observed: 5.42 ft at 2:15PM Dec 02, 2016Observed: 5.41 ft at 2:30PM Dec 02, 2016Observed: 5.4 ft at 2:45PM Dec 02, 2016Observed: 5.39 ft at 3:00PM Dec 02, 2016Observed: 5.37 ft at 3:15PM Dec 02, 2016Observed: 5.36 ft at 3:30PM Dec 02, 2016Observed: 5.35 ft at 3:45PM Dec 02, 2016Observed: 5.34 ft at 4:00PM Dec 02, 2016Observed: 5.33 ft at 4:15PM Dec 02, 2016Observed: 5.32 ft at 4:30PM Dec 02, 2016Observed: 5.31 ft at 4:45PM Dec 02, 2016Observed: 5.3 ft at 5:00PM Dec 02, 2016Observed: 5.29 ft at 5:15PM Dec 02, 2016Observed: 5.28 ft at 5:30PM Dec 02, 2016Observed: 5.27 ft at 5:45PM Dec 02, 2016Observed: 5.26 ft at 6:00PM Dec 02, 2016Observed: 5.25 ft at 6:15PM Dec 02, 2016Observed: 5.24 ft at 6:30PM Dec 02, 2016Observed: 5.23 ft at 6:45PM Dec 02, 2016Observed: 5.22 ft at 7:00PM Dec 02, 2016Observed: 5.21 ft at 7:15PM Dec 02, 2016Observed: 5.2 ft at 7:30PM Dec 02, 2016Observed: 5.19 ft at 7:45PM Dec 02, 2016Observed: 5.18 ft at 8:00PM Dec 02, 2016Observed: 5.17 ft at 8:15PM Dec 02, 2016Observed: 5.17 ft at 8:30PM Dec 02, 2016Observed: 5.16 ft at 8:45PM Dec 02, 2016Observed: 5.15 ft at 9:00PM Dec 02, 2016Observed: 5.14 ft at 9:15PM Dec 02, 2016Observed: 5.13 ft at 9:30PM Dec 02, 2016Observed: 5.13 ft at 9:45PM Dec 02, 2016Observed: 5.12 ft at 10:00PM Dec 02, 2016Observed: 5.11 ft at 10:15PM Dec 02, 2016Observed: 5.1 ft at 10:30PM Dec 02, 2016Observed: 5.09 ft at 10:45PM Dec 02, 2016Observed: 5.09 ft at 11:00PM Dec 02, 2016Observed: 5.08 ft at 11:15PM Dec 02, 2016Observed: 5.07 ft at 11:30PM Dec 02, 2016Observed: 5.07 ft at 11:45PM Dec 02, 2016Observed: 5.06 ft at 12:00AM Dec 03, 2016Observed: 5.05 ft at 12:15AM Dec 03, 2016Observed: 5.04 ft at 12:30AM Dec 03, 2016Observed: 5.04 ft at 12:45AM Dec 03, 2016Observed: 5.03 ft at 1:00AM Dec 03, 2016Observed: 5.02 ft at 1:15AM Dec 03, 2016Observed: 5.02 ft at 1:30AM Dec 03, 2016Observed: 5.01 ft at 1:45AM Dec 03, 2016Observed: 5 ft at 2:00AM Dec 03, 2016Observed: 5 ft at 2:15AM Dec 03, 2016Observed: 4.99 ft at 2:30AM Dec 03, 2016Observed: 4.98 ft at 2:45AM Dec 03, 2016Observed: 4.97 ft at 3:00AM Dec 03, 2016Observed: 4.97 ft at 3:15AM Dec 03, 2016Observed: 4.96 ft at 3:30AM Dec 03, 2016Observed: 4.95 ft at 3:45AM Dec 03, 2016Observed: 4.95 ft at 4:00AM Dec 03, 2016Observed: 4.94 ft at 4:15AM Dec 03, 2016Observed: 4.94 ft at 4:30AM Dec 03, 2016Observed: 4.93 ft at 4:45AM Dec 03, 2016Observed: 4.92 ft at 5:00AM Dec 03, 2016Observed: 4.91 ft at 5:15AM Dec 03, 2016Observed: 4.91 ft at 5:30AM Dec 03, 2016Observed: 4.9 ft at 5:45AM Dec 03, 2016Observed: 4.9 ft at 6:00AM Dec 03, 2016Observed: 4.89 ft at 6:15AM Dec 03, 2016Observed: 4.88 ft at 6:30AM Dec 03, 2016Observed: 4.87 ft at 6:45AM Dec 03, 2016Observed: 4.86 ft at 7:00AM Dec 03, 2016Observed: 4.86 ft at 7:15AM Dec 03, 2016Observed: 4.85 ft at 7:30AM Dec 03, 2016Observed: 4.84 ft at 7:45AM Dec 03, 2016Observed: 4.84 ft at 8:00AM Dec 03, 2016Observed: 4.83 ft at 8:15AM Dec 03, 2016Observed: 4.83 ft at 8:30AM Dec 03, 2016Observed: 4.82 ft at 8:45AM Dec 03, 2016Observed: 4.81 ft at 9:00AM Dec 03, 2016Observed: 4.81 ft at 9:15AM Dec 03, 2016Observed: 4.8 ft at 9:30AM Dec 03, 2016Observed: 4.8 ft at 9:45AM Dec 03, 2016Observed: 4.79 ft at 10:00AM Dec 03, 2016Observed: 4.78 ft at 10:15AM Dec 03, 2016Observed: 4.78 ft at 10:30AM Dec 03, 2016Observed: 4.78 ft at 10:45AM Dec 03, 2016Observed: 4.77 ft at 11:00AM Dec 03, 2016Observed: 4.76 ft at 11:15AM Dec 03, 2016Observed: 4.76 ft at 11:30AM Dec 03, 2016Observed: 4.76 ft at 11:45AM Dec 03, 2016Observed: 4.75 ft at 12:00PM Dec 03, 2016Observed: 4.74 ft at 12:15PM Dec 03, 2016Observed: 4.73 ft at 12:30PM Dec 03, 2016Observed: 4.73 ft at 12:45PM Dec 03, 2016Observed: 4.72 ft at 1:00PM Dec 03, 2016Observed: 4.72 ft at 1:15PM Dec 03, 2016Observed: 4.71 ft at 1:30PM Dec 03, 2016Highest Forecast: 4.5 ft 7:00PM Dec 03, 2016Forecast: 4.3 ft 1:00AM Dec 04, 2016Forecast: 4.2 ft 7:00AM Dec 04, 2016Forecast: 4.1 ft 1:00PM Dec 04, 2016Forecast: 4.1 ft 7:00PM Dec 04, 2016Forecast: 4.1 ft 1:00AM Dec 05, 2016Forecast: 4.1 ft 7:00AM Dec 05, 2016Forecast: 4.1 ft 1:00PM Dec 05, 2016Forecast: 4.1 ft 7:00PM Dec 05, 2016Forecast: 4.2 ft 1:00AM Dec 06, 2016Forecast: 4.2 ft 7:00AM Dec 06, 2016USGS--Water Resources of the United StatesMAWN4(plotting HGIRG) Graph Created (2:31PM Dec 3, 2016)ObservedForecast (issued 8:47AM Dec 3)Latest observed value: 4.71 ft at 1:30 PM EST 3-Dec-2016. Flood Stage is 8 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Ramapo River at Mahwah are issued routinely year-round.
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Upstream Gauge - at Suffern Upstream Gauge Downstream Gauge Downstream Gauge - at Pompton Lakes Dam
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 9
Flood Stage: 8
Action Stage: 7.5
Low Stage (in feet): 0

Historic Crests
(1) 15.78 ft on 08/28/2011
(2) 12.53 ft on 10/16/1955
(3) 12.52 ft on 09/16/1999
(4) 11.87 ft on 05/29/1968
(5) 11.35 ft on 08/19/1955
(6) 11.16 ft on 03/07/2011
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 15.78 ft on 08/28/2011
(2) 9.55 ft on 04/17/2011
(3) 10.72 ft on 03/11/2011
(4) 11.16 ft on 03/07/2011
(5) 8.07 ft on 12/12/2008
(6) 9.85 ft on 10/13/2005
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
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
12 Major flooding along Route 202 and Route 17 intersection. Road closed. Flooding along Riverview Drive and along Halifax Road and Bridle Path Lane. Flooding on Brakeshoe Place, Brook Street and Catherine Avenue.
9 State Route 202 floods downstream. Moderate flooding along Route 202 and Route 17. Water into backyards. Minor flooding along Brakeshoe Place, Brook Street and Catherine Avenue.
8 Minor flooding along Route 202.
Photos
(1) Ramapo River at Mahwah
About This Location Collapse

Latitude: 41.097500° N, Longitude: 74.163333° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 8 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 29 253.1 ft 261.1 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
Forecasts for the Ramapo River at Mahwah are issued as needed during times of high water, and are routinely available.
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
Upton Weather Forecast Office
175 Brookhaven Ave. Bldg. NWS-1
Upton, NY 11973
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Page last modified: 13-Aug-2015 2:16 AM
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