{ "lid": "NVLW3", "usgsId": "05427235", "reachId": "13296064", "name": "Rock River at Lake Koshkonong", "description": "", "rfc": { "abbreviation": "NCRFC", "name": "North Central River Forecast Center" }, "wfo": { "abbreviation": "MKX", "name": "Dousman" }, "state": { "abbreviation": "WI", "name": "Wisconsin" }, "county": "Rock", "timeZone": "CST6CDT", "latitude": 42.8575, "longitude": -88.940833333333, "pedts": { "observed": "HPIRA", "forecast": "HPIFF" }, "status": { "observed": { "primary": 7.23, "primaryUnit": "ft", "secondary": -999, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-04-05T01:00:00Z" }, "forecast": { "primary": -999, "primaryUnit": "", "secondary": -999, "secondaryUnit": "", "floodCategory": "fcst_not_current", "validTime": "0001-01-01T00:00:00Z" } }, "flood": { "stageUnits": "ft", "flowUnits": "cfs", "categories": { "major": { "stage": 11.5, "flow": -9999 }, "moderate": { "stage": 11, "flow": -9999 }, "minor": { "stage": 10, "flow": -9999 }, "action": { "stage": 9, "flow": -9999 } }, "lro": { "minorCS": "0.24", "moderateCS": "0.15", "majorCS": "0.13", "producedTime": "2026-03-27T02:02:17Z", "interval": "AMJ" }, "crests": { "historic": [ { "occurredTime": "2008-06-21T21:00:00Z", "stage": 15.13, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "2013-04-22T00:00:00Z", "stage": 12.35, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1993-04-25T00:00:00Z", "stage": 12.23, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2008-04-18T08:00:00Z", "stage": 11.65, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-09-12T00:00:00Z", "stage": 11.62, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-03-25T07:15:00Z", "stage": 11.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2004-06-05T00:00:00Z", "stage": 11.49, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": 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"2024-07-07T20:00:00Z", "stage": 10.1, "flow": 0, "preliminary": "P", "olddatum": false }, { "occurredTime": "2011-03-30T17:00:00Z", "stage": 10.09, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2009-05-02T18:00:00Z", "stage": 10.02, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2013-06-30T21:30:00Z", "stage": 10.02, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2024-06-13T18:30:00Z", "stage": 10.01, "flow": 0, "preliminary": "P", "olddatum": false }, { "occurredTime": "2017-05-06T00:00:00Z", "stage": 9.78, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1998-04-23T00:00:00Z", "stage": 9.77, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1999-04-28T00:00:00Z", "stage": 9.73, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2014-05-17T00:00:00Z", "stage": 9.71, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": 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"2015-04-22T00:00:00Z", "stage": 8.69, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1991-12-14T00:00:00Z", "stage": 8.52, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1995-08-23T00:00:00Z", "stage": 8.1, "flow": 0, "preliminary": "O", "olddatum": false } ], "recent": [ { "occurredTime": "2024-07-07T20:00:00Z", "stage": 10.1, "flow": 0, "preliminary": "P", "olddatum": false }, { "occurredTime": "2024-06-13T18:30:00Z", "stage": 10.01, "flow": 0, "preliminary": "P", "olddatum": false }, { "occurredTime": "2019-10-15T00:00:00Z", "stage": 10.95, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-10-15T21:30:00Z", "stage": 11.02, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-03-25T07:15:00Z", "stage": 11.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-10-15T02:00:00Z", "stage": 11.07, "flow": 0, "preliminary": "P", "olddatum": false }, { "occurredTime": "2018-09-12T00:00:00Z", "stage": 11.62, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2018-05-20T05:45:00Z", "stage": 10.33, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2017-05-06T00:00:00Z", "stage": 9.78, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2016-04-11T00:00:00Z", "stage": 9.43, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2015-12-21T21:00:00Z", "stage": 8.76, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "2015-04-22T00:00:00Z", "stage": 8.69, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2014-07-08T19:00:00Z", "stage": 9.68, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "2014-05-17T00:00:00Z", "stage": 9.71, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2013-06-30T21:30:00Z", "stage": 10.02, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2013-04-22T00:00:00Z", "stage": 12.35, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-03-30T17:00:00Z", "stage": 10.09, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-07-31T13:00:00Z", "stage": 11.17, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-06-30T10:00:00Z", "stage": 9.44, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-03-20T09:00:00Z", "stage": 9.18, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2009-05-02T18:00:00Z", "stage": 10.02, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2009-03-29T17:00:00Z", "stage": 11.37, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2008-06-21T21:00:00Z", "stage": 15.13, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "2008-04-18T08:00:00Z", "stage": 11.65, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2007-08-30T12:00:00Z", "stage": 10.46, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2007-04-07T21:00:00Z", "stage": 10.58, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2004-06-05T00:00:00Z", "stage": 11.49, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2000-06-07T00:00:00Z", "stage": 11.02, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1999-04-28T00:00:00Z", "stage": 9.73, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1998-04-23T00:00:00Z", "stage": 9.77, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1997-03-14T00:00:00Z", "stage": 9.02, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1995-08-23T00:00:00Z", "stage": 8.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1994-03-21T00:00:00Z", "stage": 9.19, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1993-04-25T00:00:00Z", "stage": 12.23, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1991-12-14T00:00:00Z", "stage": 8.52, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1991-03-31T00:00:00Z", "stage": 8.93, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1990-03-23T00:00:00Z", "stage": 9.45, "flow": 0, "preliminary": "O", "olddatum": false } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 14, "statement": "There is widespread flooding of lakeside homes and roads in the Lake Koshkonong area including Vets Lane, Blackhawk Island Road and Oxbow Bend Road." }, { "stage": 13, "statement": "There is widespread flooding of lakeside homes and roads in the Lake Koshkonong area including Vets Lane, Blackhawk Island Road and Oxbow Bend Road." }, { "stage": 12, "statement": "There is widespread flooding of lakeside homes and roads in the Lake Koshkonong area including Vets Lane, Blackhawk Island Road and Oxbow Bend Road." }, { "stage": 11.3, "statement": "There is knee-deep water over Blackhawk Island Road. Lamp Road on west side of river also becomes flooded. Lake Koshkonong merges with Mud Lake to the east of Lake Koshkonong." }, { "stage": 11, "statement": "In the Town of Lake Koshkonong, floodwaters affect Vets Lane, Blackhawk Island Road, and Oxbow Bend Road. There is widespread flooding of roads and docks in the Town of Koshkonong and Town of Sumner including Vets Lane, Blackhawk Island Road and Oxbow Bend Road." }, { "stage": 10.5, "statement": "Floodwaters reach Oxbow Bend Road in the area of the gage on the east side of the lake." }, { "stage": 10, "statement": "Floodwaters affect homes and boat docks in the Blackhawk Island area of Lake Koshkonong on the north side of the lake. Floodwaters spread over low spots on Blackhawk Island Road in the area where the Rock River enters the lake." }, { "stage": 9.5, "statement": "Water is into low lying areas along Lake Koshkonong." }, { "stage": 9, "statement": "Water spreads into low lying areas along Lake Koshkonong." } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/NVLW3.SSTG.prob.weekint.gif", "flow": "", "volume": "" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/NVLW3.SSTG.exceed.90day.gif", "flow": "", "volume": "" }, "shortrange": "" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/nvlw3_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/nvlw3_record.png" }, "photos": [ { "id": "11125842252762714606", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 42.8575, -88.940833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/nvlw3/11125842252762714606.jpeg", "caption": "Indianford dam covered with floodwaters-April 2013" } }, { "id": "11144975597626986990", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 42.8575, -88.940833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/nvlw3/11144975597626986990.jpeg", "caption": "April_2013_flooding_1_Lk_Koshkonong" } } ] }, "dataAttribution": [ { "abbrev": "USGS", "text": "05427235", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/monitoring-location/USGS-05427235/#dataTypeId=continuous-00065-0&period=P7D&showFieldMeasurements=true" } ], "impactsLowWaters": [], "normalThreshold": null, "hydronotes": [ { "statement": "River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.", "effective": "0401", "expiration": "0930" }, { "statement": "River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.", "effective": "1001", "expiration": "0331" } ], "datums": { "vertical": { "value": [ { "label": "North American Vertical Datum of 1988", "abbrev": "NAVD88", "description": "A fixed reference for elevations determined by geodetic leveling. The datum was derived from a general adjustment of the first-order terrestrial leveling nets of the United States, Canada, and Mexico. In the adjustment, only the height of the primary tidal bench mark, referenced to the International Great Lakes Datum of 1985 (IGLD 85) local mean sea level height value, at Father Point, Rimouski, Quebec, Canada was held fixed, thus providing minimum constraint. NAVD 88 and IGLD 85 are identical. However, NAVD 88 bench mark values are given in Helmert orthometric height units while IGLD 85 values are in dynamic heights. See International Great Lakes Datum of 1985, National Geodetic Vertical Datum of 1929, and geopotential difference. NAVD 88 should not be used as Mean Sea Level.", "value": 769.77 } ] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": true, "url": "https://mapservices.weather.noaa.gov/static/rest/services/NWS_FIM/FIM_nvlw3/MapServer", "zeroDatum": { "value": 769.77, "datum": "NAVD88" }, "downloads": { "depthGrids": "https://water.noaa.gov/resources/downloads/fim/nvlw3/nvlw3_shapefiles.zip", "images": "https://water.noaa.gov/resources/downloads/fim/nvlw3/nvlw3_images.zip", "kmz": "https://water.noaa.gov/resources/downloads/fim/nvlw3/nvlw3_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": "WI State Partner", "url": "", "image": "https://water.noaa.gov/resources/fim/" }, { "text": "Partner1", "title": "Maps produced in cooperation with the Wisconsin Department of Natural Resources", "url": "http://dnr.wi.gov/", "image": "https://water.noaa.gov/resources/fim/nvlw3-partner-01.png" }, { "text": "Partner2", "title": "Maps produced in cooperation with the Wisconsin Department of Emergency Management", "url": "http://emergencymanagement.wi.gov/", "image": "https://water.noaa.gov/resources/fim/nvlw3-partner-02.png" } ] }, "upstreamLid": "FATW3", "downstreamLid": "NVEW3", "inService": { "enabled": true, "message": "" }, "lowThreshold": null, "forecastReliability": "Forecasts are issued as needed during times of high water, but are not routinely available.", "TruncateObs": "-1", "TruncateFcst": "7", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "fcst_not_current" }