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-9999, "preliminary": "O", "olddatum": true }, { "occurredTime": "1858-06-15T00:00:00Z", "stage": 30.7, "flow": -9999, "preliminary": "O", "olddatum": true }, { "occurredTime": "1844-06-18T00:00:00Z", "stage": 32.13, "flow": 0, "preliminary": "O", "olddatum": true } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 37, "statement": "Near this height, floodwater begins to impact Grafton City Hall." }, { "stage": 33.5, "statement": "Nutwood Levee is Overtopped." }, { "stage": 32.1, "statement": "Methodist Church at Main St. and Vine St. begins flooding." }, { "stage": 31, "statement": "The hangars at the south end of Smartt field begin to flood." }, { "stage": 30.9, "statement": "Missouri Route B from Washeon Road to Seeburger Road is closed near this height." }, { "stage": 30.1, "statement": "Water reaches the intersection of Main Street and Maple Street." }, { "stage": 29.1, "statement": "Water reaches Main at Church Street." }, { "stage": 29, "statement": "Route 100 between Grafton and Alton at Clifton Terrace is flooded near this height." }, { "stage": 28.8, "statement": "Water begins entering the north hangars at Smartt Field." }, { "stage": 28.5, "statement": "Water begins entering the ramps on the north end of Smartt Field as the northwest and northeast corners are already flooded." }, { "stage": 28.4, "statement": "Water reaches Main Street at the Vistors Center" }, { "stage": 28.3, "statement": "Intersection at Main (Route 100) & Route 3 is closed. Also at this level the Northeast Corner of Smartt Airfield begins flooding. Grafton Hills Drive is closed to all but local and select (UPS, FedEx, and Amazon) delivery traffic. " }, { "stage": 28, "statement": "Agricultural levee north of Highway 370 is overtopped, flooding a St. Peters recreational area around a lake near 370 and Truman." }, { "stage": 27.6, "statement": "Beasley Fish Market at Main Street and Overmeyer begins flooding." }, { "stage": 27.5, "statement": "The intersection at Main Street and Dagget Hollow begins flooding." }, { "stage": 26.5, "statement": "At this height the entrance to the Illinois Youth Center-Pere Marquette becomes flooded, forcing the evacuation of those staying there." }, { "stage": 26.4, "statement": "Residential flooding in Grafton occurs." }, { "stage": 26, "statement": "Water distribution system begins to flood so emergency measures begin." }, { "stage": 25.6, "statement": "Water surrounds base of Aerie's Resort at Main Street (Hwy 100) near Market." }, { "stage": 25.5, "statement": "Brussels Ferry closes near this height. O'Jan's Fish Stand in Grafton closes near this height." }, { "stage": 25.2, "statement": "The intersection at Main Street and Canal Street begins flooding." }, { "stage": 25, "statement": "Ball field south of Main Street and Hawg Pit BBQ begin flooding." }, { "stage": 24.9, "statement": "Water reaches the intersection of Main St. and Edwards St." }, { "stage": 24.7, "statement": "City of Grafton begins to detour traffic along Route 100 (Main Street) at Evans Street. Also at this level the Catholic Church parking lot at Main & Evans begins flooding. This represents the lowest point on Main Street in Grafton." }, { "stage": 24, "statement": "Roads within Chautauqua and Elsah begin flooding near this height." } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/GRFI2.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/GRFI2.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/GRFI2.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/GRFI2.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/GRFI2.QINE.exceed.90day.gif", "volume": "" }, "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/GRFI2.shortrange.hefs.png" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/grfi2_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/grfi2_record.png" 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38.968055555556, -90.428888888889 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/grfi2/12861611516884029934.jpeg", "caption": "Le Sieur Street and Our Lady of the Rivers in Portage des Sioux on March 30, 2010 at 23.9 feet." } }, { "id": "12877415750992794094", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.968055555556, -90.428888888889 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/grfi2/12877415750992794094.jpeg", "caption": "Parking lot at the Portage des Sioux Nature Area on March 30, 2010 at 23.9 ft." } }, { "id": "12968267950119326190", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.968055555556, -90.428888888889 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/grfi2/12968267950119326190.jpeg", "caption": "Cassens Live Bait in Grafton on June 21, 2008 at a stage of 29.1 feet." } }, { "id": "12985763688378143214", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.968055555556, -90.428888888889 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/grfi2/12985763688378143214.jpeg", "caption": "Chataqua street flooding on June 21, 2008 at a stage of 29.1 feet." } }, { "id": "13003126772277055982", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.968055555556, -90.428888888889 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/grfi2/13003126772277055982.jpeg", "caption": "Elsah street flooding on June 21, 2008 at a stage of 29.1 feet." } }, { "id": "13019954462732718574", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.968055555556, -90.428888888889 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/grfi2/13019954462732718574.jpeg", "caption": "Grafton car wash along Highway 100 on June 21, 2008 at a stage of 29.1 feet." } }, { "id": "13037067467865854446", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 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{ "abbrev": "U.S. Geological Survey", "text": "USGS--Water Resources of the United States", "title": "US Geological Survey", "url": "https://waterdata.usgs.gov/nwis" }, { "abbrev": "USGS", "text": "05587450", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=05587450" } ], "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" }, { "statement": "For the latest navigation status update from the U.S. Army Corps of Engineers-St. Louis District, click here.", "effective": "0101", "expiration": "1231" } ], "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": 403.32 } ] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": false, "url": "", "zeroDatum": null, "downloads": null, "siteSpecificInfo": "", "dataAttribution": [] }, "upstreamLid": "CAGM7", "downstreamLid": "ALOI2", "inService": { "enabled": true, "message": "" }, "lowThreshold": null, "forecastReliability": "Forecasts are issued routinely year-round.", "TruncateObs": "-1", "TruncateFcst": "-1", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "no_flooding" }