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Hydrograph River at a Glance Download
Ramapo River at Mahwah Stage (ft)Flow (kcfs)Observed: 3.79 ft at 11:15AM Mar 03, 2015Observed: 3.82 ft at 11:30AM Mar 03, 2015Observed: 3.84 ft at 11:45AM Mar 03, 2015Observed: 3.84 ft at 12:00PM Mar 03, 2015Observed: 3.85 ft at 12:15PM Mar 03, 2015Observed: 3.85 ft at 12:30PM Mar 03, 2015Observed: 3.85 ft at 12:45PM Mar 03, 2015Observed: 3.84 ft at 1:00PM Mar 03, 2015Observed: 3.84 ft at 1:15PM Mar 03, 2015Observed: 3.83 ft at 1:30PM Mar 03, 2015Observed: 3.82 ft at 1:45PM Mar 03, 2015Observed: 3.81 ft at 2:00PM Mar 03, 2015Observed: 3.81 ft at 2:15PM Mar 03, 2015Observed: 3.8 ft at 2:30PM Mar 03, 2015Observed: 3.8 ft at 2:45PM Mar 03, 2015Observed: 3.79 ft at 3:00PM Mar 03, 2015Observed: 3.79 ft at 3:15PM Mar 03, 2015Observed: 3.79 ft at 3:30PM Mar 03, 2015Observed: 3.78 ft at 3:45PM Mar 03, 2015Observed: 3.78 ft at 4:00PM Mar 03, 2015Observed: 3.78 ft at 4:15PM Mar 03, 2015Observed: 3.78 ft at 4:30PM Mar 03, 2015Observed: 3.79 ft at 4:45PM Mar 03, 2015Observed: 3.79 ft at 5:00PM Mar 03, 2015Observed: 3.79 ft at 5:15PM Mar 03, 2015Observed: 3.79 ft at 5:30PM Mar 03, 2015Observed: 3.79 ft at 5:45PM Mar 03, 2015Observed: 3.79 ft at 6:00PM Mar 03, 2015Observed: 3.79 ft at 6:15PM Mar 03, 2015Observed: 3.79 ft at 6:30PM Mar 03, 2015Observed: 3.8 ft at 6:45PM Mar 03, 2015Observed: 3.8 ft at 7:00PM Mar 03, 2015Observed: 3.8 ft at 7:15PM Mar 03, 2015Observed: 3.8 ft at 7:30PM Mar 03, 2015Observed: 3.8 ft at 7:45PM Mar 03, 2015Observed: 3.8 ft at 8:00PM Mar 03, 2015Observed: 3.8 ft at 8:15PM Mar 03, 2015Observed: 3.8 ft at 8:30PM Mar 03, 2015Observed: 3.8 ft at 8:45PM Mar 03, 2015Observed: 3.8 ft at 9:00PM Mar 03, 2015Observed: 3.8 ft at 9:15PM Mar 03, 2015Observed: 3.81 ft at 9:30PM Mar 03, 2015Observed: 3.81 ft at 9:45PM Mar 03, 2015Observed: 3.81 ft at 10:00PM Mar 03, 2015Observed: 3.81 ft at 10:15PM Mar 03, 2015Observed: 3.81 ft at 10:30PM Mar 03, 2015Observed: 3.82 ft at 10:45PM Mar 03, 2015Observed: 3.82 ft at 11:00PM Mar 03, 2015Observed: 3.82 ft at 11:15PM Mar 03, 2015Observed: 3.82 ft at 11:30PM Mar 03, 2015Observed: 3.82 ft at 11:45PM Mar 03, 2015Observed: 3.82 ft at 12:00AM Mar 04, 2015Observed: 3.82 ft at 12:15AM Mar 04, 2015Observed: 3.82 ft at 12:30AM Mar 04, 2015Observed: 3.82 ft at 12:45AM Mar 04, 2015Observed: 3.83 ft at 1:00AM Mar 04, 2015Observed: 3.83 ft at 1:15AM Mar 04, 2015Observed: 3.83 ft at 1:30AM Mar 04, 2015Observed: 3.83 ft at 1:45AM Mar 04, 2015Observed: 3.84 ft at 2:00AM Mar 04, 2015Observed: 3.84 ft at 2:15AM Mar 04, 2015Observed: 3.84 ft at 2:30AM Mar 04, 2015Observed: 3.84 ft at 2:45AM Mar 04, 2015Observed: 3.85 ft at 3:00AM Mar 04, 2015Observed: 3.85 ft at 3:15AM Mar 04, 2015Observed: 3.85 ft at 3:30AM Mar 04, 2015Observed: 3.85 ft at 3:45AM Mar 04, 2015Observed: 3.86 ft at 4:00AM Mar 04, 2015Observed: 3.86 ft at 4:15AM Mar 04, 2015Observed: 3.86 ft at 4:30AM Mar 04, 2015Observed: 3.87 ft at 4:45AM Mar 04, 2015Observed: 3.87 ft at 5:00AM Mar 04, 2015Observed: 3.87 ft at 5:15AM Mar 04, 2015Observed: 3.88 ft at 5:30AM Mar 04, 2015Observed: 3.88 ft at 5:45AM Mar 04, 2015Observed: 3.88 ft at 6:00AM Mar 04, 2015Observed: 3.88 ft at 6:15AM Mar 04, 2015Observed: 3.89 ft at 6:30AM Mar 04, 2015Observed: 3.89 ft at 6:45AM Mar 04, 2015Observed: 3.89 ft at 7:00AM Mar 04, 2015Observed: 3.9 ft at 7:15AM Mar 04, 2015Observed: 3.9 ft at 7:30AM Mar 04, 2015Observed: 3.9 ft at 7:45AM Mar 04, 2015Observed: 3.91 ft at 8:00AM Mar 04, 2015Observed: 3.91 ft at 8:15AM Mar 04, 2015Observed: 3.91 ft at 8:30AM Mar 04, 2015Observed: 3.92 ft at 8:45AM Mar 04, 2015Observed: 3.92 ft at 9:00AM Mar 04, 2015Observed: 3.92 ft at 9:15AM Mar 04, 2015Observed: 3.93 ft at 9:30AM Mar 04, 2015Observed: 3.94 ft at 9:45AM Mar 04, 2015Observed: 3.94 ft at 10:00AM Mar 04, 2015Observed: 3.95 ft at 10:15AM Mar 04, 2015Observed: 3.96 ft at 10:30AM Mar 04, 2015Observed: 3.96 ft at 10:45AM Mar 04, 2015Observed: 3.97 ft at 11:00AM Mar 04, 2015Observed: 3.97 ft at 11:15AM Mar 04, 2015Observed: 3.98 ft at 11:30AM Mar 04, 2015Observed: 3.99 ft at 11:45AM Mar 04, 2015Observed: 3.99 ft at 12:00PM Mar 04, 2015Observed: 3.99 ft at 12:15PM Mar 04, 2015Observed: 4 ft at 12:30PM Mar 04, 2015Observed: 4 ft at 12:45PM Mar 04, 2015Observed: 4.01 ft at 1:00PM Mar 04, 2015Observed: 4.02 ft at 1:15PM Mar 04, 2015Observed: 4.02 ft at 1:30PM Mar 04, 2015Observed: 4.03 ft at 1:45PM Mar 04, 2015Observed: 4.03 ft at 2:00PM Mar 04, 2015Observed: 4.04 ft at 2:15PM Mar 04, 2015Observed: 4.04 ft at 2:30PM Mar 04, 2015Observed: 4.05 ft at 2:45PM Mar 04, 2015Observed: 4.05 ft at 3:00PM Mar 04, 2015Observed: 4.06 ft at 3:15PM Mar 04, 2015Observed: 4.06 ft at 3:30PM Mar 04, 2015Observed: 4.07 ft at 3:45PM Mar 04, 2015Observed: 4.07 ft at 4:00PM Mar 04, 2015Observed: 4.07 ft at 4:15PM Mar 04, 2015Observed: 4.07 ft at 4:30PM Mar 04, 2015Observed: 4.07 ft at 4:45PM Mar 04, 2015Observed: 4.08 ft at 5:00PM Mar 04, 2015Observed: 4.08 ft at 5:15PM Mar 04, 2015Observed: 4.08 ft at 5:30PM Mar 04, 2015Observed: 4.08 ft at 5:45PM Mar 04, 2015Observed: 4.08 ft at 6:00PM Mar 04, 2015Observed: 4.08 ft at 6:15PM Mar 04, 2015Observed: 4.08 ft at 6:30PM Mar 04, 2015Observed: 4.08 ft at 6:45PM Mar 04, 2015Observed: 4.08 ft at 7:00PM Mar 04, 2015Observed: 4.08 ft at 7:15PM Mar 04, 2015Observed: 4.08 ft at 7:30PM Mar 04, 2015Observed: 4.09 ft at 7:45PM Mar 04, 2015Observed: 4.09 ft at 8:00PM Mar 04, 2015Observed: 4.09 ft at 8:15PM Mar 04, 2015Observed: 4.09 ft at 8:30PM Mar 04, 2015Observed: 4.09 ft at 8:45PM Mar 04, 2015Observed: 4.09 ft at 9:00PM Mar 04, 2015Observed: 4.09 ft at 9:15PM Mar 04, 2015Observed: 4.09 ft at 9:30PM Mar 04, 2015Observed: 4.09 ft at 9:45PM Mar 04, 2015Observed: 4.09 ft at 10:00PM Mar 04, 2015Observed: 4.1 ft at 10:15PM Mar 04, 2015Observed: 4.11 ft at 10:30PM Mar 04, 2015Observed: 4.12 ft at 10:45PM Mar 04, 2015Observed: 4.13 ft at 11:00PM Mar 04, 2015Observed: 4.14 ft at 11:15PM Mar 04, 2015Observed: 4.17 ft at 11:30PM Mar 04, 2015Observed: 4.19 ft at 11:45PM Mar 04, 2015Observed: 4.21 ft at 12:00AM Mar 05, 2015Observed: 4.22 ft at 12:15AM Mar 05, 2015Observed: 4.23 ft at 12:30AM Mar 05, 2015Observed: 4.25 ft at 12:45AM Mar 05, 2015Observed: 4.25 ft at 1:00AM Mar 05, 2015Highest Observation: 4.26 ft at 1:15AM Mar 05, 2015Highest Observation: 4.26 ft at 1:30AM Mar 05, 2015Highest Observation: 4.26 ft at 1:45AM Mar 05, 2015Highest Observation: 4.26 ft at 2:00AM Mar 05, 2015Highest Observation: 4.26 ft at 2:15AM Mar 05, 2015Highest Observation: 4.26 ft at 2:30AM Mar 05, 2015Highest Observation: 4.26 ft at 2:45AM Mar 05, 2015Highest Observation: 4.26 ft at 3:00AM Mar 05, 2015Highest Observation: 4.26 ft at 3:15AM Mar 05, 2015Observed: 4.25 ft at 3:30AM Mar 05, 2015Observed: 4.25 ft at 3:45AM Mar 05, 2015Observed: 4.24 ft at 4:00AM Mar 05, 2015Observed: 4.24 ft at 4:15AM Mar 05, 2015Observed: 4.24 ft at 4:30AM Mar 05, 2015Observed: 4.24 ft at 4:45AM Mar 05, 2015Observed: 4.23 ft at 5:00AM Mar 05, 2015Observed: 4.23 ft at 5:15AM Mar 05, 2015Observed: 4.23 ft at 5:30AM Mar 05, 2015Observed: 4.23 ft at 5:45AM Mar 05, 2015Observed: 4.22 ft at 6:00AM Mar 05, 2015Observed: 4.22 ft at 6:15AM Mar 05, 2015Observed: 4.22 ft at 6:30AM Mar 05, 2015Observed: 4.22 ft at 6:45AM Mar 05, 2015Observed: 4.22 ft at 7:00AM Mar 05, 2015Observed: 4.21 ft at 7:15AM Mar 05, 2015Observed: 4.21 ft at 7:30AM Mar 05, 2015Observed: 4.21 ft at 7:45AM Mar 05, 2015Observed: 4.21 ft at 8:00AM Mar 05, 2015Observed: 4.21 ft at 8:15AM Mar 05, 2015Observed: 4.21 ft at 8:30AM Mar 05, 2015Observed: 4.21 ft at 8:45AM Mar 05, 2015Observed: 4.21 ft at 9:00AM Mar 05, 2015Observed: 4.21 ft at 9:15AM Mar 05, 2015Observed: 4.21 ft at 9:30AM Mar 05, 2015Observed: 4.21 ft at 9:45AM Mar 05, 2015Observed: 4.2 ft at 10:00AM Mar 05, 2015Observed: 4.2 ft at 10:15AM Mar 05, 2015Observed: 4.2 ft at 10:30AM Mar 05, 2015Observed: 4.2 ft at 10:45AM Mar 05, 2015Observed: 4.2 ft at 11:00AM Mar 05, 2015Observed: 4.2 ft at 11:15AM Mar 05, 2015Observed: 4.2 ft at 11:30AM Mar 05, 2015Observed: 4.2 ft at 11:45AM Mar 05, 2015Observed: 4.2 ft at 12:00PM Mar 05, 2015Observed: 4.19 ft at 12:15PM Mar 05, 2015Observed: 4.19 ft at 12:30PM Mar 05, 2015Observed: 4.19 ft at 12:45PM Mar 05, 2015Observed: 4.19 ft at 1:00PM Mar 05, 2015Observed: 4.18 ft at 1:15PM Mar 05, 2015Observed: 4.18 ft at 1:30PM Mar 05, 2015Observed: 4.18 ft at 1:45PM Mar 05, 2015Observed: 4.18 ft at 2:00PM Mar 05, 2015Observed: 4.18 ft at 2:15PM Mar 05, 2015Observed: 4.18 ft at 2:30PM Mar 05, 2015Observed: 4.18 ft at 2:45PM Mar 05, 2015Observed: 4.18 ft at 3:00PM Mar 05, 2015Observed: 4.18 ft at 3:15PM Mar 05, 2015Observed: 4.18 ft at 3:30PM Mar 05, 2015Observed: 4.17 ft at 3:45PM Mar 05, 2015Observed: 4.17 ft at 4:00PM Mar 05, 2015Observed: 4.17 ft at 4:15PM Mar 05, 2015Observed: 4.17 ft at 4:30PM Mar 05, 2015Observed: 4.17 ft at 4:45PM Mar 05, 2015Observed: 4.16 ft at 5:00PM Mar 05, 2015Observed: 4.16 ft at 5:15PM Mar 05, 2015Observed: 4.16 ft at 5:30PM Mar 05, 2015Observed: 4.16 ft at 5:45PM Mar 05, 2015Observed: 4.16 ft at 6:00PM Mar 05, 2015Observed: 4.16 ft at 6:15PM Mar 05, 2015Observed: 4.16 ft at 6:30PM Mar 05, 2015Observed: 4.16 ft at 6:45PM Mar 05, 2015Observed: 4.16 ft at 7:00PM Mar 05, 2015Observed: 4.15 ft at 7:15PM Mar 05, 2015Observed: 4.15 ft at 7:30PM Mar 05, 2015Observed: 4.15 ft at 7:45PM Mar 05, 2015Observed: 4.15 ft at 8:00PM Mar 05, 2015Observed: 4.15 ft at 8:15PM Mar 05, 2015Observed: 4.15 ft at 8:30PM Mar 05, 2015Observed: 4.14 ft at 8:45PM Mar 05, 2015Observed: 4.15 ft at 9:00PM Mar 05, 2015Observed: 4.15 ft at 9:15PM Mar 05, 2015Observed: 4.14 ft at 9:30PM Mar 05, 2015Observed: 4.14 ft at 9:45PM Mar 05, 2015Observed: 4.14 ft at 10:00PM Mar 05, 2015Observed: 4.14 ft at 10:15PM Mar 05, 2015Observed: 4.14 ft at 10:30PM Mar 05, 2015Observed: 4.14 ft at 10:45PM Mar 05, 2015Observed: 4.13 ft at 11:00PM Mar 05, 2015Observed: 4.13 ft at 11:15PM Mar 05, 2015Observed: 4.13 ft at 11:30PM Mar 05, 2015Observed: 4.13 ft at 11:45PM Mar 05, 2015Observed: 4.12 ft at 12:00AM Mar 06, 2015Observed: 4.12 ft at 12:15AM Mar 06, 2015Observed: 4.12 ft at 12:30AM Mar 06, 2015Observed: 4.12 ft at 12:45AM Mar 06, 2015Observed: 4.12 ft at 1:00AM Mar 06, 2015Observed: 4.11 ft at 1:15AM Mar 06, 2015Observed: 4.1 ft at 1:30AM Mar 06, 2015Observed: 4.1 ft at 1:45AM Mar 06, 2015Observed: 4.09 ft at 2:00AM Mar 06, 2015Observed: 4.08 ft at 2:15AM Mar 06, 2015Observed: 4.08 ft at 2:30AM Mar 06, 2015Observed: 4.07 ft at 2:45AM Mar 06, 2015Observed: 4.07 ft at 3:00AM Mar 06, 2015Observed: 4.07 ft at 3:15AM Mar 06, 2015Observed: 4.07 ft at 3:30AM Mar 06, 2015Observed: 4.06 ft at 3:45AM Mar 06, 2015Observed: 4.06 ft at 4:00AM Mar 06, 2015Observed: 4.06 ft at 4:15AM Mar 06, 2015Observed: 4.06 ft at 4:30AM Mar 06, 2015Observed: 4.06 ft at 4:45AM Mar 06, 2015Observed: 4.06 ft at 5:00AM Mar 06, 2015Observed: 4.06 ft at 5:15AM Mar 06, 2015Observed: 4.06 ft at 5:30AM Mar 06, 2015Observed: 4.06 ft at 5:45AM Mar 06, 2015Observed: 4.06 ft at 6:00AM Mar 06, 2015Observed: 4.06 ft at 6:15AM Mar 06, 2015Observed: 4.06 ft at 6:30AM Mar 06, 2015Observed: 4.06 ft at 6:45AM Mar 06, 2015Observed: 4.06 ft at 7:00AM Mar 06, 2015Observed: 4.06 ft at 7:15AM Mar 06, 2015Observed: 4.06 ft at 7:30AM Mar 06, 2015Observed: 4.06 ft at 7:45AM Mar 06, 2015Observed: 4.07 ft at 8:00AM Mar 06, 2015Observed: 4.08 ft at 8:15AM Mar 06, 2015Observed: 4.08 ft at 8:30AM Mar 06, 2015Observed: 4.09 ft at 8:45AM Mar 06, 2015Observed: 4.1 ft at 9:00AM Mar 06, 2015Observed: 4.12 ft at 9:15AM Mar 06, 2015Observed: 4.15 ft at 9:30AM Mar 06, 2015Observed: 4.14 ft at 9:45AM Mar 06, 2015Observed: 4.11 ft at 10:00AM Mar 06, 2015Observed: 4.09 ft at 10:15AM Mar 06, 2015Observed: 4.09 ft at 10:30AM Mar 06, 2015Highest Forecast: 4 ft 1:00PM Mar 06, 2015Highest Forecast: 4 ft 7:00PM Mar 06, 2015Forecast: 3.9 ft 1:00AM Mar 07, 2015Forecast: 3.9 ft 7:00AM Mar 07, 2015Forecast: 3.9 ft 1:00PM Mar 07, 2015Forecast: 3.9 ft 7:00PM Mar 07, 2015Forecast: 3.8 ft 1:00AM Mar 08, 2015Forecast: 3.8 ft 8:00AM Mar 08, 2015Forecast: 3.8 ft 2:00PM Mar 08, 2015Forecast: 3.8 ft 8:00PM Mar 08, 2015Forecast: 3.8 ft 2:00AM Mar 09, 2015Forecast: 3.8 ft 8:00AM Mar 09, 2015USGS--Water Resources of the United StatesMAWN4(plotting HGIRG) Graph Created (11:01AM Mar 6, 2015)ObservedForecast (issued 9:40AM Mar 6)Latest observed value: 4.09 ft at 10:30 AM EST 6-Mar-2015. 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
9 State Route 202 floods downstream.
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: 12-Feb-2015 9:36 PM
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