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"stage": 16.18, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "1943-05-21T12:00:00Z", "stage": 16.17, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "1942-06-19T12:00:00Z", "stage": 16.3, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "1939-04-18T12:00:00Z", "stage": 16.4, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "1939-03-15T12:00:00Z", "stage": 16.8, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "1938-09-28T12:00:00Z", "stage": 16.7, "flow": -9999, "preliminary": "O", "olddatum": false }, { "occurredTime": "1937-03-12T12:00:00Z", "stage": 16.6, "flow": -9999, "preliminary": "O", "olddatum": false } ] }, "lowWaters": { "historic": [] }, "impacts": [ { "stage": 160000, "statement": "At this approximate discharge, the Corps will raise the gates out of the water, creating \"open river\" conditions." }, { "stage": 28.6, "statement": "Water enters the elevated flood building north of the lock house." }, { "stage": 28, "statement": "In Monkey Run, at least a dozen homes are flooded at this level." }, { "stage": 27.8, "statement": "Saverton homes begin flooding near this level." }, { "stage": 27.3, "statement": "The work shop building at Lock and Dam #22 begins flooding at this height." }, { "stage": 27, "statement": "Sny Island Cell #1 levee is overtopped" }, { "stage": 26, "statement": "In Monkey Run (north of Saverton), houses begin flooding near this level." }, { "stage": 25.7, "statement": "Water enters Lock house north door and the railroad tracks crossing." }, { "stage": 25.5, "statement": "Homes in Riverview Acres (just south of the lock and dam) begin to flood. Also, North Saverton Road floods near this height." }, { "stage": 25.2, "statement": "Missouri Route E becomes impassable and is closed from Saverton Road near the Hascall Creek bridge to Lock and Dam 22." }, { "stage": 24.5, "statement": "Highway 79 is closed at the Continental Cement Plant." }, { "stage": 24.2, "statement": "Missouri Route E begins flooding at the lowest points." }, { "stage": 21.8, "statement": "At this height, the ties of the BNSF railroad tracks begin flooding." }, { "stage": 21.4, "statement": "Near this level, the lock is closed to navigation. This level will vary with circumstance. Also, BNSF railroad tracks just south of Hannibal are flooded." }, { "stage": 15.5, "statement": "An access road to riverside raised homes on the riverward side of the Sny levee begins to flood near this level." }, { "stage": 13.5, "statement": "This is the upper navigational limit for the pool at Lock & Dam 22." }, { "stage": 13.4, "statement": "This is the target pool for navigation at Lock & Dam 22." }, { "stage": 13, "statement": "This is the lower navigational limit for the pool at Lock & Dam 22." }, { "stage": 12, "statement": "Buildings in unprotected areas are damaged. At this approximate stage, the Corps will lift all gates out of the river, creating \"open river\" conditions. This takes place at a discharge of around 160,000 cfs." } ] }, "images": { "probability": { "weekint": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/SVRM7.SSTG.prob.weekint.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/SVRM7.QINE.prob.weekint.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/SVRM7.volume.prob.weekint.gif" }, "entperiod": { "stage": "https://water.noaa.gov/resources/probabilistic/exceedance/SVRM7.SSTG.exceed.90day.gif", "flow": "https://water.noaa.gov/resources/probabilistic/exceedance/SVRM7.QINE.exceed.90day.gif", "volume": "https://water.noaa.gov/resources/probabilistic/exceedance/SVRM7.volume.exceed.90day.gif" }, "shortrange": "https://water.noaa.gov/resources/probabilistic/short_term/SVRM7.shortrange.hefs.png" }, "hydrograph": { "default": "https://water.noaa.gov/resources/hydrographs/svrm7_hg.png", "floodcat": "https://water.noaa.gov/resources/hydrographs/svrm7_record.png" }, "photos": [ { "id": "9022144907286876654", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/9022144907286876654.jpeg", "caption": "Aerial View" } }, { "id": "9029084852882706926", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/9029084852882706926.jpeg", "caption": "Upstream View" } }, { "id": "9035156386156057070", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/9035156386156057070.jpeg", "caption": "Downstream View" } }, { "id": "9041931658410791406", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/9041931658410791406.jpeg", "caption": "Tailwater View from downstream side of the dam" } }, { "id": "9049471872930877934", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/9049471872930877934.jpeg", "caption": "Pool View from upstream side of dam" } }, { "id": "9056114022674272750", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/9056114022674272750.jpeg", "caption": "Saverton Lock looking upstream" } }, { "id": "7759703738086986222", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/7759703738086986222.jpeg", "caption": "Saverton Road at the north end of Saverton looking north on 19 June 2008 (HT=26.7 ft.)" } }, { "id": "7778650870349173230", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/7778650870349173230.jpeg", "caption": "State Highway E looking south from Malaruni Creek bridge. (HT=26.7 ft.)" } }, { "id": "12374309621311082990", "type": "Feature", "geometry": { "type": "Point", "coordinates": [ 39.63457, -91.248203 ] }, "properties": { "image": "https://water.noaa.gov/resources/photos/svrm7/12374309621311082990.jpeg", "caption": "Looking east from Hwy 79 with flooded cropland in foreground and tailwater at 21.5 ft." } } ] }, "dataAttribution": [ { "abbrev": "US Army Corps of Engineers", "text": "Rivergages.com", "title": "US Army Corps of Engineers", "url": "https://rivergages.com" }, { "abbrev": "USGS", "text": "393810091145601", "title": "Observations courtesy of U.S. Geological Survey", "url": "https://waterdata.usgs.gov/nwis/inventory/?site_no=393810091145601" } ], "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": "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" }, { "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": [] }, "horizontal": { "value": [] }, "notes": { "value": [] } }, "inundation": { "enabled": false, "url": "", "zeroDatum": null, "downloads": null, "siteSpecificInfo": "", "dataAttribution": [] }, "upstreamLid": "HNNM7", "downstreamLid": "LUSM7", "inService": { "enabled": true, "message": "" }, "lowThreshold": null, "forecastReliability": "Forecasts are issued routinely year-round.", "TruncateObs": "-1", "TruncateFcst": "-1", "ObservedFloodCategory": "no_flooding", "ForecastFloodCategory": "no_flooding" }