{ "lid": "PPPN4", "usgsId": "01388500", "reachId": "6249470", "name": "Pompton River at Pompton Plains", "description": "", "rfc": { "abbreviation": "MARFC", "name": "Middle Atlantic River Forecast Center" }, "wfo": { "abbreviation": "PHI", "name": "Mount Holly" }, "state": { "abbreviation": "NJ", "name": "New Jersey" }, "county": "Morris", "timeZone": "EST5EDT", "latitude": 40.969722222222, "longitude": -74.281944444444, "pedts": { "observed": "HGIRG", "forecast": "HGIFF" }, "status": { "observed": { "primary": 8.01, "primaryUnit": "ft", "secondary": 0.172, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-09-18T16:15:00Z" }, "forecast": { "primary": 10.1, "primaryUnit": "ft", "secondary": 1.26, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-09-21T12:00:00Z" } }, "flood": { "stageUnits": "ft", "flowUnits": "cfs", "categories": { "major": { "stage": 19, "flow": -9999 }, "moderate": { "stage": 18, "flow": -9999 }, "minor": { "stage": 16, "flow": -9999 }, "action": { "stage": 13, "flow": 5730 } }, "lro": { "minorCS": "0.15", "moderateCS": "0.07", "majorCS": "0.06", "producedTime": "2026-08-28T23:22:47Z", "interval": "SON" }, "crests": { "historic": [ { "occurredTime": "2011-08-29T17:15:00Z", "stage": 25.24, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1984-04-06T00:00:00Z", "stage": 24.47, "flow": 25400, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-03-14T21:15:00Z", "stage": 22.77, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1968-05-30T00:00:00Z", "stage": 22.18, "flow": 18900, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-12T00:45:00Z", "stage": 22.11, "flow": 17710, "preliminary": "O", "olddatum": false }, { "occurredTime": "2007-04-16T18:00:00Z", "stage": 21.72, "flow": 18000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2023-12-19T00:45:00Z", "stage": 21.21, "flow": 16154, "preliminary": "O", "olddatum": false }, { "occurredTime": "1999-09-17T04:15:00Z", "stage": 21, "flow": 16400, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-04-03T16:30:00Z", "stage": 20.42, "flow": 15300, "preliminary": "O", "olddatum": false }, { "occurredTime": "2024-01-10T20:30:00Z", "stage": 20.38, "flow": 14549, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-02-03T00:00:00Z", "stage": 20.37, "flow": 15580, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-09-08T19:45:00Z", "stage": 20.33, "flow": 14260, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-07T20:45:00Z", "stage": 20.28, "flow": 14360, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-04-17T17:30:00Z", "stage": 19.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2021-09-02T15:45:00Z", "stage": 19.58, "flow": 13075, "preliminary": "O", "olddatum": false }, { "occurredTime": "1980-04-10T00:00:00Z", "stage": 19.56, "flow": 13660, "preliminary": "O", "olddatum": false }, { "occurredTime": "1977-11-09T00:00:00Z", "stage": 18.65, "flow": 12130, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-10-09T11:30:00Z", "stage": 17.86, "flow": 10600, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-10-13T18:30:00Z", "stage": 17.56, "flow": 10100, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-01-28T10:00:00Z", "stage": 16.96, "flow": 9490, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-03-31T10:15:00Z", "stage": 16.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-12-12T00:00:00Z", "stage": 16.78, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2021-08-23T19:00:00Z", "stage": 16.35, "flow": 7879, "preliminary": "O", "olddatum": false }, { "occurredTime": "1998-05-12T01:15:00Z", "stage": 16.32, "flow": 8620, "preliminary": "O", "olddatum": false }, { "occurredTime": "2022-04-08T15:45:00Z", "stage": 16.24, "flow": 7723, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-12-22T11:30:00Z", "stage": 16.17, "flow": 7625, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-12-02T19:30:00Z", "stage": 14.86, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-10-21T00:45:00Z", "stage": 14.86, "flow": 6770, "preliminary": "O", "olddatum": false } ], "recent": [ { "occurredTime": "2024-01-10T20:30:00Z", "stage": 20.38, "flow": 14549, "preliminary": "O", "olddatum": false }, { "occurredTime": "2023-12-19T00:45:00Z", "stage": 21.21, "flow": 16154, "preliminary": "O", "olddatum": false }, { "occurredTime": "2022-04-08T15:45:00Z", "stage": 16.24, "flow": 7723, "preliminary": "O", "olddatum": false }, { "occurredTime": "2021-09-02T15:45:00Z", "stage": 19.58, "flow": 13075, "preliminary": "O", "olddatum": false }, { "occurredTime": "2021-08-23T19:00:00Z", "stage": 16.35, "flow": 7879, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-12-22T11:30:00Z", "stage": 16.17, "flow": 7625, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-09-08T19:45:00Z", "stage": 20.33, "flow": 14260, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-08-29T17:15:00Z", "stage": 25.24, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "2011-04-17T17:30:00Z", "stage": 19.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-12T00:45:00Z", "stage": 22.11, "flow": 17710, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-07T20:45:00Z", "stage": 20.28, "flow": 14360, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-03-31T10:15:00Z", "stage": 16.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-03-14T21:15:00Z", "stage": 22.77, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2007-04-16T18:00:00Z", "stage": 21.72, "flow": 18000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-10-13T18:30:00Z", "stage": 17.56, "flow": 10100, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-10-09T11:30:00Z", "stage": 17.86, "flow": 10600, "preliminary": "O", "olddatum": false }, { "occurredTime": "2005-04-03T16:30:00Z", "stage": 20.42, "flow": 15300, "preliminary": "O", "olddatum": false }, { "occurredTime": "2003-12-12T00:00:00Z", "stage": 16.78, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1999-09-17T04:15:00Z", "stage": 21, "flow": 16400, "preliminary": "O", "olddatum": false }, { "occurredTime": "1998-05-12T01:15:00Z", "stage": 16.32, "flow": 8620, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-12-02T19:30:00Z", "stage": 14.86, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-10-21T00:45:00Z", "stage": 14.86, "flow": 6770, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-01-28T10:00:00Z", "stage": 16.96, "flow": 9490, "preliminary": "O", "olddatum": false }, { "occurredTime": "1984-04-06T00:00:00Z", "stage": 24.47, "flow": 25400, "preliminary": "O", "olddatum": false }, { "occurredTime": "1980-04-10T00:00:00Z", "stage": 19.56, "flow": 13660, "preliminary": "O", "olddatum": false }, { "occurredTime": "1977-11-09T00:00:00Z", "stage": 18.65, "flow": 12130, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-02-03T00:00:00Z", "stage": 20.37, "flow": 15580, "preliminary": "O", "olddatum": false }, { "occurredTime": "1968-05-30T00:00:00Z", "stage": 22.18, "flow": 18900, "preliminary": "O", "olddatum": false } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 26, "statement": "Flooding spreads west to near the Newark-Pompton Turnpike." }, { "stage": 24, "statement": "Portions of the railroad tracks are flooded." }, { "stage": 22, "statement": "Water spreads west of the railroad tracks by going underneath them." }, { "stage": 21, "statement": "Flooding occurs across a large area from Jackson Avenue on the north and Riverside Drive on the south between the railroad tracks and the river." }, { "stage": 20, "statement": "Village section of Pompton Plains begins to flood." }, { "stage": 19, "statement": "Widespread flooding occurs in low lying areas of Wayne, Pequannock and Pompton Lakes." }, { "stage": 18.5, "statement": "Route 23, North and South, is impassable and closed." }, { "stage": 18, "statement": "Pequannock Avenue at Shady Street becomes impassable and blocks Roosevelt and Shady Streets. Oakwood at Shady Street becomes impassable. The first evacuations begin. Flooding occurs on West View Road and the Lower Riverview community areas of Wayne." }, { "stage": 17, "statement": "Pequannock Avenue at Roosevelt Street becomes impassable. Route 23 exit ramp at Alexander Avenue becomes impassable." }, { "stage": 16, "statement": "Residences on Pequannock Avenue along the river between Madison and Shady streets become surrounded by water. Businesses along Route 23 north begin to flood." }, { "stage": 12, "statement": "The first flooding begins in the area of River Road and Harrison Street." } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/PPPN4.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/PPPN4.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/PPPN4.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/PPPN4.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/PPPN4.QINE.exceed.90day.gif", "volume": "" }, "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/PPPN4.shortrange.hefs.png" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/pppn4_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/pppn4_record.png" }, "photos": [] }, "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": "01388500", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=01388500" } ], "impactsLowWaters": [], "normalThreshold": { "value": 0, "units": "ft" }, "hydronotes": [], "datums": { "vertical": { "value": [ { "label": "National Geodetic Vertical Datum of 1929", "abbrev": "NGVD29", "description": "A fixed reference adopted as a standard geodetic datum for elevations determined by leveling. The datum was derived for surveys from a general adjustment of the first-order leveling nets of both the United States and Canada. In the adjustment, mean sea level was held fixed as observed at 21 tide stations in the United States and 5 in Canada. The year indicates the time of the general adjustment. A synonym for Sea-level Datum of 1929. The geodetic datum is fixed and does not take into account the changing stands of sea level. Because there are many variables affecting sea level, and because the geodetic datum represents a best fit over a broad area, the relationship between the geodetic datum and local mean sea level is not consistent from one location to another in either time or space. For this reason, the National Geodetic Vertical Datum should not be confused with mean sea level. See North American Vertical Datum of 1988 (NAVD 88). NGVD 29 should not be used as Mean Sea Level. NGVD 29 is no longer supported by NGS.", "value": 160 } ] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": true, "url": "https://mapservices.weather.noaa.gov/static/rest/services/NWS_FIM/FIM_pppn4/MapServer", "zeroDatum": { "value": 159.07, "datum": "NAVD88" }, "downloads": { "depthGrids": "https://water.noaa.gov/resources/downloads/fim/pppn4/pppn4_shapefiles.zip", "images": "https://water.noaa.gov/resources/downloads/fim/pppn4/pppn4_images.zip", "kmz": "https://water.noaa.gov/resources/downloads/fim/pppn4/pppn4_kmz.zip" }, "siteSpecificInfo": "These maps represent unobstructed flow conditions and may be \r\nunrepresentative when ice jams and/or debris are in place.", "dataAttribution": [ { "text": "USGS", "title": "Observations courtesy of the US Geological Survey", "url": "", "image": "https://water.noaa.gov/resources/fim/" }, { "text": "State", "title": "USACE Philadelphia and New York Districts", "url": "http://www.nan.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/pppn4-partner-01.png" }, { "text": "Partner2", "title": "Federal Emergency Management Agency, Region II", "url": "http://www.fema.gov", "image": "https://water.noaa.gov/resources/fim/pppn4-partner-02.png" } ] }, "upstreamLid": "", "downstreamLid": "MWLN4", "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" }