{ "lid": "GENW3", "usgsId": "", "reachId": "13208374", "name": "Mississippi River below Lock and Dam 8 - Genoa", "description": "", "rfc": { "abbreviation": "NCRFC", "name": "North Central River Forecast Center" }, "wfo": { "abbreviation": "ARX", "name": "La Crosse" }, "state": { "abbreviation": "WI", "name": "Wisconsin" }, "county": "Vernon", "timeZone": "CST6CDT", "latitude": 43.5688, "longitude": -91.2304, "pedts": { "observed": "HTIRG", "forecast": "HTIFF" }, "status": { "observed": { "primary": 620.67, "primaryUnit": "ft", "secondary": 13.8, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-08-31T04:15:00Z" }, "forecast": { "primary": 620.7, "primaryUnit": "ft", "secondary": 14.2, "secondaryUnit": "kcfs", "floodCategory": "no_flooding", "validTime": "2026-08-31T06:00:00Z" } }, "flood": { "stageUnits": "ft", "flowUnits": "cfs", "categories": { "major": { "stage": 636, "flow": -9999 }, "moderate": { "stage": 634, "flow": -9999 }, "minor": { "stage": 631, "flow": -9999 }, "action": { "stage": 625.2, "flow": -9999 } }, "lro": { "minorCS": "< 0.05", "moderateCS": "< 0.05", "majorCS": "< 0.05", "producedTime": "2026-08-28T05:02:25Z", "interval": "SON" }, "crests": { "historic": [ { "occurredTime": "1965-04-22T00:00:00Z", "stage": 638.4, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1997-04-12T00:00:00Z", "stage": 636.45, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2001-04-18T00:00:00Z", "stage": 636.21, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2023-04-27T20:00:00Z", "stage": 635.72, "flow": 0, "preliminary": "P", "olddatum": false }, { "occurredTime": "1969-04-20T00:00:00Z", "stage": 635.24, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1952-04-20T00:00:00Z", "stage": 634.52, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2024-07-05T02:15:00Z", "stage": 634.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1993-06-26T00:00:00Z", "stage": 633.94, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1951-04-20T00:00:00Z", "stage": 633.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1975-05-03T00:00:00Z", "stage": 633.86, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-04-04T06:15:00Z", "stage": 633.84, "flow": 176800, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-04-16T10:00:00Z", "stage": 633.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1967-04-07T00:00:00Z", "stage": 633.35, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1986-04-09T00:00:00Z", "stage": 633.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1954-05-09T00:00:00Z", "stage": 632.7, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-09-28T05:00:00Z", "stage": 632.4, "flow": 145454, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-03-21T00:00:00Z", "stage": 632.05, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-05-25T23:15:00Z", "stage": 631.97, "flow": 140533, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-04-26T00:00:00Z", "stage": 631.96, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1983-03-14T00:00:00Z", "stage": 631.82, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-03-28T06:15:00Z", "stage": 631.74, "flow": 136186, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-04-24T00:00:00Z", "stage": 631.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1943-06-24T00:00:00Z", "stage": 631.49, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2017-05-26T09:15:00Z", "stage": 631.38, "flow": 129382, "preliminary": "O", "olddatum": false }, { "occurredTime": "1971-04-19T00:00:00Z", "stage": 631.34, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1942-06-06T00:00:00Z", "stage": 631.23, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2016-09-27T15:00:00Z", "stage": 631.19, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-04-28T00:00:00Z", "stage": 631.15, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-05-07T19:00:00Z", "stage": 631, "flow": 122200, "preliminary": "O", "olddatum": false } ], "recent": [ { "occurredTime": "2024-07-05T02:15:00Z", "stage": 634.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2023-04-27T20:00:00Z", "stage": 635.72, "flow": 0, "preliminary": "P", "olddatum": false }, { "occurredTime": "2019-05-25T23:15:00Z", "stage": 631.97, "flow": 140533, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-05-07T19:00:00Z", "stage": 631, "flow": 122200, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-04-04T06:15:00Z", "stage": 633.84, "flow": 176800, "preliminary": "O", "olddatum": false }, { "occurredTime": "2019-03-28T06:15:00Z", "stage": 631.74, "flow": 136186, "preliminary": "O", "olddatum": false }, { "occurredTime": "2017-05-26T09:15:00Z", "stage": 631.38, "flow": 129382, "preliminary": "O", "olddatum": false }, { "occurredTime": "2016-09-27T15:00:00Z", "stage": 631.19, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "2011-04-16T10:00:00Z", "stage": 633.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "2010-09-28T05:00:00Z", "stage": 632.4, "flow": 145454, "preliminary": "O", "olddatum": false }, { "occurredTime": "2001-04-18T00:00:00Z", "stage": 636.21, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1997-04-12T00:00:00Z", "stage": 636.45, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-04-26T00:00:00Z", "stage": 631.96, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1993-06-26T00:00:00Z", "stage": 633.94, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1986-04-09T00:00:00Z", "stage": 633.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1983-03-14T00:00:00Z", "stage": 631.82, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-04-24T00:00:00Z", "stage": 631.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-04-28T00:00:00Z", "stage": 631.15, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1975-05-03T00:00:00Z", "stage": 633.86, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-03-21T00:00:00Z", "stage": 632.05, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1971-04-19T00:00:00Z", "stage": 631.34, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1969-04-20T00:00:00Z", "stage": 635.24, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1967-04-07T00:00:00Z", "stage": 633.35, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1965-04-22T00:00:00Z", "stage": 638.4, "flow": 0, "preliminary": "R", "olddatum": false }, { "occurredTime": "1954-05-09T00:00:00Z", "stage": 632.7, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1952-04-20T00:00:00Z", "stage": 634.52, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1951-04-20T00:00:00Z", "stage": 633.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1943-06-24T00:00:00Z", "stage": 631.49, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1942-06-06T00:00:00Z", "stage": 631.23, "flow": 0, "preliminary": "O", "olddatum": false } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 639.5, "statement": "Water begins to go over the protective earthen dikes. " }, { "stage": 639, "statement": "Water begins to flow over the lock walls at Dam 8. " }, { "stage": 638.4, "statement": "Water levels reach the flood of record. " }, { "stage": 636, "statement": "Lock and dam 8 is closed to navigation. " }, { "stage": 631.5, "statement": "Blackhawk Park south of Genoa is flooded." }, { "stage": 625.2, "statement": "Army Road likely closes near Albin, Iowa impacting the public access." } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/GENW3.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/GENW3.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/GENW3.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/GENW3.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/GENW3.QINE.exceed.90day.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/GENW3.volume.exceed.90day.gif" }, "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/GENW3.shortrange.hefs.png" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/genw3_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/genw3_record.png" }, "photos": [ { "id": "1242963225804673518", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 43.5688, -91.2304 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/genw3/1242963225804673518.jpeg", "caption": "Upstream view at Genoa Dam 8, October 16th, 2012" } }, { "id": "1284835871290692078", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 43.5688, -91.2304 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/genw3/1284835871290692078.jpeg", "caption": "Downstream view at Genoa Dam 8, October 16th, 2012" } } ] }, "dataAttribution": [ { "abbrev": "US Army Corps of Engineers", "text": "USACE - Building Strong", "title": "Observations courtesy of U.S. Army Corps of Engineers", "url": "https://water.usace.army.mil/office/mvp/location/LockDam_08" } ], "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": [] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": false, "url": "", "zeroDatum": null, "downloads": null, "siteSpecificInfo": "", "dataAttribution": [] }, "upstreamLid": "BRWM5", "downstreamLid": "LNSI4", "inService": { "enabled": true, "message": "" }, "lowThreshold": null, "forecastReliability": "Forecasts are issued routinely during the navigation season, and as needed at other times of the year.", "TruncateObs": "-1", "TruncateFcst": "7", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "no_flooding" }