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"2002-05-15T01:00:00Z", "stage": 31.7, "flow": 350000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2001-06-10T03:00:00Z", "stage": 30.5, "flow": 305000, "preliminary": "O", "olddatum": false }, { "occurredTime": "2001-02-28T08:00:00Z", "stage": 25.9, "flow": 208100, "preliminary": "O", "olddatum": false }, { "occurredTime": "2000-06-28T08:00:00Z", "stage": 21.15, "flow": 142000, "preliminary": "O", "olddatum": false }, { "occurredTime": "1998-10-09T00:00:00Z", "stage": 30, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1998-04-05T00:00:00Z", "stage": 29, "flow": 253000, "preliminary": "O", "olddatum": false }, { "occurredTime": "1997-04-16T00:00:00Z", "stage": 28.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1997-02-27T00:00:00Z", "stage": 28.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1996-06-02T00:00:00Z", "stage": 29.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1995-05-21T00:00:00Z", "stage": 36.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1994-04-15T00:00:00Z", "stage": 35.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1993-08-02T00:00:00Z", "stage": 40.04, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1990-05-19T00:00:00Z", "stage": 34.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1987-04-17T00:00:00Z", "stage": 27.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1986-10-07T00:00:00Z", "stage": 37.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1986-05-22T00:00:00Z", "stage": 29, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1985-12-12T00:00:00Z", "stage": 26.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1985-10-14T00:00:00Z", "stage": 28.1, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1985-06-19T00:00:00Z", "stage": 29, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1985-02-26T00:00:00Z", "stage": 34, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1984-11-03T00:00:00Z", "stage": 26.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1984-04-23T00:00:00Z", "stage": 31.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1983-05-04T00:00:00Z", "stage": 33.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-12-07T00:00:00Z", "stage": 33.9, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-06-12T00:00:00Z", "stage": 31.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1982-02-24T00:00:00Z", "stage": 26.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1981-05-21T00:00:00Z", "stage": 30.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1979-04-13T00:00:00Z", "stage": 31.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1978-03-27T00:00:00Z", "stage": 33.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1976-04-28T00:00:00Z", "stage": 32, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1973-04-26T00:00:00Z", "stage": 36.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1967-06-30T00:00:00Z", "stage": 33.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1961-05-12T00:00:00Z", "stage": 33.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1960-04-08T00:00:00Z", "stage": 32.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1958-07-25T00:00:00Z", "stage": 32.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1952-04-29T00:00:00Z", "stage": 31.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1951-07-20T00:00:00Z", "stage": 37.3, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1947-07-01T00:00:00Z", "stage": 35.4, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1945-04-21T00:00:00Z", "stage": 33, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1944-04-29T00:00:00Z", "stage": 36.5, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1943-05-22T00:00:00Z", "stage": 36.6, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1942-06-29T00:00:00Z", "stage": 34.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1935-06-08T00:00:00Z", "stage": 35.2, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1927-04-24T00:00:00Z", "stage": 33, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1903-06-07T00:00:00Z", "stage": 36.8, "flow": 0, "preliminary": "O", "olddatum": false }, { "occurredTime": "1844-06-24T00:00:00Z", "stage": 40.11, "flow": 0, "preliminary": "R", "olddatum": false } ] }, "lowWaters": { "historic": [ { "occurredTime": "1963-12-24T00:00:00Z", "stage": 3.2, "flow": -9999, "statement": "Lowest stage on record." }, { "occurredTime": "1879-12-26T00:00:00Z", "stage": 3.45, "flow": -9999, "statement": "" }, { "occurredTime": "2006-11-28T00:00:00Z", "stage": 4.03, "flow": 24300, "statement": "Also the USGS daily value on 11/29/06." }, { "occurredTime": "2005-12-15T00:00:00Z", "stage": 4.17, "flow": 24800, "statement": "" }, { "occurredTime": "2023-01-01T00:00:00Z", "stage": 4.18, "flow": 25000, "statement": "" } ] }, "impacts": [ { "stage": 42.2, "statement": "This is the approximate minimum level of protection provided by the Monarch levee protecting Chesterfield Valley. Since this gage is affected by Mississippi River backwater, the actual level of overtopping may be higher. " }, { "stage": 38, "statement": "Floor of the gage house." }, { "stage": 37, "statement": "Residences north of St. Charles become cut off near this height." }, { "stage": 36, "statement": "Major flooding begins. The levee at the Highway 370 bridge is overtopped." }, { "stage": 35, "statement": "The levee at the Highway 370 bridge overtops near this height. Missouri State Route F northwest of Defiance along Femme Osage Creek will be closed near this height." }, { "stage": 34.5, "statement": "Missouri Highway 94 near Route H will be closed in both directions near this height." }, { "stage": 33, "statement": "Up to 7 non-Federal levees are overtopped. (USACE)" }, { "stage": 32.5, "statement": "The west end of Greens Bottom Road floods. This road connects Pittman Hill Road and Jungs Station Road south of 94." }, { "stage": 32, "statement": "Near this height, Missouri Bottom Road begins flooding between Prouhet Farm Road and Aubuchon Road." }, { "stage": 30.7, "statement": "Near this height, the base of the Lewis and Clark Boat House will begin flooding." }, { "stage": 28, "statement": "Near this height, Aubuchon Road and Charbonier Road begin flooding between Teson Road and Riverwood Estates Boulevard." }, { "stage": 27, "statement": "The Katy Trail begins flooding near this height along Hawning Road, about 2 miles north northeast of the Highway 370 bridge." }, { "stage": 25, "statement": "Downstream near this stage, Missouri Route H at Island Road and agricultural bottomland may begin flooding, depending on Mississippi River flow and backwater." }, { "stage": 21, "statement": "An access road to farmland on Bonhomme Island gets cut off above this height." } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/SCLM7.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/SCLM7.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/SCLM7.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/SCLM7.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/SCLM7.QINE.exceed.90day.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/SCLM7.volume.exceed.90day.gif" }, "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/SCLM7.shortrange.hefs.png" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/sclm7_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/sclm7_record.png" }, "photos": [ { "id": "17378347542247510510", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/17378347542247510510.jpeg", "caption": "Boat ramp and roadside park on September 17, 2008 with the St. Charles gage at 30.7 ft." } }, { "id": "17395800262113890798", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/17395800262113890798.jpeg", "caption": "Highway 94 eastbound on September 17, 2008 with the St. Charles gage near 30.7 feet." } }, { "id": "17411884227442643438", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/17411884227442643438.jpeg", "caption": "Highway 94 westbound just northeast of Defiance on September 17, 2008 with St. Charles near 30.7 ft." } }, { "id": "17441992463583678958", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/17441992463583678958.jpeg", "caption": "Lewis and Clark Boathouse and Nature Center and parking lot on September 18, 2008 at 31.0 feet." } }, { "id": "17458340517861528046", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/17458340517861528046.jpeg", "caption": "Frontier Park on September 18, 2008 at a stage of 31.0 feet." } }, { "id": "17475004557178311150", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/17475004557178311150.jpeg", "caption": "Boat ramp at Blachette Landing on September 18, 2008 at 31.0 feet." } }, { "id": "17492184254563619310", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/17492184254563619310.jpeg", "caption": "Blanchette Landing benches on September 18, 2008 at 31.0 feet." } }, { "id": "17508298280368476654", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/17508298280368476654.jpeg", "caption": "Tecumseh Street on September 18, 2008 at 31.0 feet." } }, { "id": "2585819484299399662", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/2585819484299399662.jpeg", "caption": "Upper sectional staff gage on the Missouri River at St. Charles, ranging from 29.0 to 33.9 feet." } }, { "id": "2596293938871734766", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/2596293938871734766.jpeg", "caption": "Middle sectional staff gage ranging from 17.0 to 33.2 ft, missing a section from 20.3 to 23.7 ft." } }, { "id": "2608686800716370414", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/2608686800716370414.jpeg", "caption": "Gaging shelter at the Missouri River at St. Charles, MO on September 30, 2009." } }, { "id": "2626930434515341806", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/2626930434515341806.jpeg", "caption": "Pressure transducer and data collection platform at the St. Chalres gage." } }, { "id": "9996293925820895726", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/9996293925820895726.jpeg", "caption": "Aerial image of the St. Charles riverfront during the flood of 1993." } }, { "id": "10003691208124338670", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/10003691208124338670.gif", "caption": "Satellite image during the flood of 1993 with downtown St. Charles in the lower left hand corner." } }, { "id": "10018485334644560366", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 38.788888888889, -90.470833333333 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/sclm7/10018485334644560366.jpeg", "caption": "Train depot at Frontier Park on the St. Charles riverfront during the flood of 1993." } } ] }, "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": "06935965", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=06935965" } ], "impactsLowWaters": [ { "value": "7.0 feet", "impact": "The City of St. Louis Water Plant at Howard Bend is on alert for potential operational issues with low water." }, { "value": "4.0 - 4.5", "impact": "The first of two treatment train intakes at the Missouri American Water North plant may need to be shut down as water drops below the top of these intakes." }, { "value": "4.0 feet", "impact": "The City of St. Louis Water Plant at Howard Bend begins monitoring the potential loss of suction prime on the water pumps." }, { "value": "2.0 - 3.2", "impact": "The Missouri American Water Central Plant begins monitoring a developing vortex in the intake pool to ensure adequate intake volume." }, { "value": "1.0 feet", "impact": "The Missouri American Water North Plant may need to shut down the last treatment train as water drops below the top of the these intakes." }, { "value": "0 - 1 ft.", "impact": "The Missouri American Water Central Plant may need to shut down as water levels fall below the top of these intakes." }, { "value": "-1.0 ft.", "impact": "At the City of St. Louis Water Plant at Howard Bend, critical shutdown is possible with additional pumps needed to avoid shutdown as water drops below the top of these intakes." } ], "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": "0929" }, { "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": "0930", "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": 413.472 } ] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": false, "url": "", "zeroDatum": null, "downloads": null, "siteSpecificInfo": "", "dataAttribution": [] }, "upstreamLid": "WHGM7", "downstreamLid": "", "inService": { "enabled": true, "message": "" }, "lowThreshold": null, "forecastReliability": "Forecasts are issued routinely year-round.", "TruncateObs": "-1", "TruncateFcst": "-1", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "no_flooding" }