{ "lid": "MAWN4", "usgsId": "01387500", "reachId": "6246322", "name": "Ramapo River at Mahwah", "description": "", "rfc": { "abbreviation": "MARFC", "name": "Middle Atlantic River Forecast Center" }, "wfo": { "abbreviation": "OKX", "name": "Upton" }, "state": { "abbreviation": "NJ", "name": "New Jersey" }, "county": "Bergen", "timeZone": "EST5EDT", "latitude": 41.0975, "longitude": -74.1633333333333, "pedts": { "observed": "HGIRG", "forecast": "HGIFF" }, "status": { "observed": { "primary": 2.62, "primaryUnit": "ft", "secondary": -999, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-09-18T10:30:00Z" }, "forecast": { "primary": 2.7, "primaryUnit": "ft", "secondary": -999, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-09-18T12:00:00Z" } }, "flood": { "stageUnits": "ft", "flowUnits": "cfs", "categories": { "major": { "stage": 12, "flow": -9999 }, "moderate": { "stage": 9, "flow": -9999 }, "minor": { "stage": 8, "flow": -9999 }, "action": { "stage": 7.5, "flow": -9999 } }, "lro": { "minorCS": "0.15", "moderateCS": "0.09", "majorCS": "0.05", "producedTime": "2026-08-28T23:22:47Z", "interval": "SON" }, "crests": { "historic": [ { "occurredTime": "2011-08-28T16:00:00Z", "stage": 15.78, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1955-10-16T00:00:00Z", "stage": 12.53, "flow": 10900, "preliminary": "O", "olddatum": false }, { "occurredTime": "1999-09-16T22:00:00Z", "stage": 12.52, "flow": 13800, "preliminary": "O", "olddatum": false }, { "occurredTime": "1968-05-29T00:00:00Z", "stage": 11.87, "flow": 8770, "preliminary": "O", "olddatum": false }, { "occurredTime": "1955-08-19T00:00:00Z", "stage": 11.35, "flow": 8580, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-07T07:45:00Z", "stage": 11.16, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1903-10-09T00:00:00Z", "stage": 11, "flow": 12400, "preliminary": "O", "olddatum": true }, { "occurredTime": "1971-08-28T00:00:00Z", "stage": 10.76, "flow": 6700, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-11T06:45:00Z", "stage": 10.72, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-12-21T00:00:00Z", "stage": 10.5, "flow": 6050, "preliminary": "O", "olddatum": false }, { "occurredTime": "1938-09-22T00:00:00Z", "stage": 10.4, "flow": 6720, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-01-25T00:00:00Z", "stage": 9.9, "flow": 4750, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-04-03T00:00:00Z", "stage": 9.87, "flow": 6220, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-10-13T00:00:00Z", "stage": 9.85, "flow": 6170, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-02-03T00:00:00Z", "stage": 9.77, "flow": 4340, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-04-17T03:45:00Z", "stage": 9.55, "flow": 5520, "preliminary": "O", "olddatum": false }, { "occurredTime": "1957-12-21T00:00:00Z", "stage": 9.33, "flow": 3800, "preliminary": "O", "olddatum": false }, { "occurredTime": "1995-11-12T13:45:00Z", "stage": 8.880000000000003, "flow": 4330, "preliminary": "O", "olddatum": false }, { "occurredTime": "1961-02-26T00:00:00Z", "stage": 8.869999999999997, "flow": 3120, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-12-11T00:00:00Z", "stage": 8.8, "flow": 4200, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-01-25T10:30:00Z", "stage": 8.69, "flow": 3420, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-01-05T00:00:00Z", "stage": 8.4, "flow": 2520, "preliminary": "O", "olddatum": false }, { "occurredTime": "2008-12-12T00:00:00Z", "stage": 8.07, "flow": 3090, "preliminary": "O", "olddatum": false } ], "recent": [ { "occurredTime": "2011-08-28T16:00:00Z", "stage": 15.78, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "2011-04-17T03:45:00Z", "stage": 9.55, "flow": 5520, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-11T06:45:00Z", "stage": 10.72, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-07T07:45:00Z", "stage": 11.16, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2008-12-12T00:00:00Z", "stage": 8.07, "flow": 3090, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-10-13T00:00:00Z", "stage": 9.85, "flow": 6170, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-04-03T00:00:00Z", "stage": 9.87, "flow": 6220, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-12-11T00:00:00Z", "stage": 8.8, "flow": 4200, "preliminary": "O", "olddatum": false }, { "occurredTime": "1999-09-16T22:00:00Z", "stage": 12.52, "flow": 13800, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-01-25T10:30:00Z", "stage": 8.69, "flow": 3420, "preliminary": "O", "olddatum": false }, { "occurredTime": "1995-11-12T13:45:00Z", "stage": 8.880000000000003, "flow": 4330, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-01-05T00:00:00Z", "stage": 8.4, "flow": 2520, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-01-25T00:00:00Z", "stage": 9.9, "flow": 4750, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-12-21T00:00:00Z", "stage": 10.5, "flow": 6050, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-02-03T00:00:00Z", "stage": 9.77, "flow": 4340, "preliminary": "O", "olddatum": false }, { "occurredTime": "1971-08-28T00:00:00Z", "stage": 10.76, "flow": 6700, "preliminary": "O", "olddatum": false }, { "occurredTime": "1968-05-29T00:00:00Z", "stage": 11.87, "flow": 8770, "preliminary": "O", "olddatum": false }, { "occurredTime": "1961-02-26T00:00:00Z", "stage": 8.869999999999997, "flow": 3120, "preliminary": "O", "olddatum": false }, { "occurredTime": "1957-12-21T00:00:00Z", "stage": 9.33, "flow": 3800, "preliminary": "O", "olddatum": false }, { "occurredTime": "1955-10-16T00:00:00Z", "stage": 12.53, "flow": 10900, "preliminary": "O", "olddatum": false }, { "occurredTime": "1955-08-19T00:00:00Z", "stage": 11.35, "flow": 8580, "preliminary": "O", "olddatum": false }, { "occurredTime": "1938-09-22T00:00:00Z", "stage": 10.4, "flow": 6720, "preliminary": "O", "olddatum": false }, { "occurredTime": "1903-10-09T00:00:00Z", "stage": 11, "flow": 12400, "preliminary": "O", "olddatum": true } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 12, "statement": "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. " }, { "stage": 9, "statement": "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. " }, { "stage": 8, "statement": "Minor flooding along Route 202. " } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/MAWN4.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/MAWN4.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/MAWN4.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/MAWN4.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/MAWN4.QINE.exceed.90day.gif", "volume": "" }, "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/MAWN4.shortrange.hefs.png" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/mawn4_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/mawn4_record.png" }, "photos": [ { "id": "12337095975959007726", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 41.0975, -74.1633333333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/mawn4/12337095975959007726.jpeg", "caption": "Ramapo River at Mahwah" } } ] }, "dataAttribution": [ { "abbrev": "US Geological Survey", "text": "USGS--Water Resources of the United States", "title": "US Geological Survey", "url": "https://waterdata.usgs.gov/nwis" }, { "abbrev": "USGS", "text": "01387500", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=01387500" }, { "abbrev": "COE", "text": "NAN", "title": "Observations courtesy of U.S. Army Corps of Engineers", "url": "http://www2.mvr.usace.army.mil/WaterControl/new/layout.cfm" } ], "impactsLowWaters": [], "normalThreshold": { "value": 0, "units": "ft" }, "hydronotes": [], "datums": { "vertical": { "value": [] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": true, "url": "https://mapservices.weather.noaa.gov/static/rest/services/NWS_FIM/FIM_mawn4/MapServer", "zeroDatum": { "value": 252.2, "datum": "NAVD88" }, "downloads": { "depthGrids": "https://water.noaa.gov/resources/downloads/fim/mawn4/mawn4_shapefiles.zip", "images": "https://water.noaa.gov/resources/downloads/fim/mawn4/mawn4_images.zip", "kmz": "https://water.noaa.gov/resources/downloads/fim/mawn4/mawn4_kmz.zip" }, "siteSpecificInfo": "", "dataAttribution": [ { "text": "USGS", "title": "Observations courtesy of the US Geological Survey", "url": "", "image": "https://water.noaa.gov/resources/fim/" }, { "text": "State", "title": "New York and Philadelphia Districts", "url": "http://www.usace.army.mil/", "image": "https://water.noaa.gov/resources/fim/" }, { "text": "Partner1", "title": "New Jersey Department of Environmental Protection", "url": "http://www.state.nj.us/dep/", "image": "https://water.noaa.gov/resources/fim/mawn4-partner-01.png" }, { "text": "Partner2", "title": "Federal Emergency Management Agency, Region II", "url": "http://www.fema.gov/", "image": "https://water.noaa.gov/resources/fim/mawn4-partner-02.png" } ] }, "upstreamLid": "SFFN6", "downstreamLid": "PLUN4", "inService": { "enabled": true, "message": "" }, "lowThreshold": { "units": "ft", "value": 0 }, "forecastReliability": "Forecasts are issued routinely year-round.", "TruncateObs": "-1", "TruncateFcst": "3", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "no_flooding" }