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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.



Hydrograph River at a Glance Download
Mississippi River at Quincy Lock and Dam 21 Tailwater (ft)Flow (kcfs)Observed: 2.58 ft at 7:50PM Sep 21, 2023Observed: 2.58 ft at 8:00PM Sep 21, 2023Observed: 2.58 ft at 8:10PM Sep 21, 2023Observed: 2.56 ft at 8:20PM Sep 21, 2023Observed: 2.59 ft at 8:30PM Sep 21, 2023Observed: 2.56 ft at 8:40PM Sep 21, 2023Observed: 2.59 ft at 8:50PM Sep 21, 2023Observed: 2.58 ft at 9:00PM Sep 21, 2023Observed: 2.57 ft at 9:10PM Sep 21, 2023Observed: 2.56 ft at 9:20PM Sep 21, 2023Observed: 2.58 ft at 9:30PM Sep 21, 2023Observed: 2.57 ft at 9:40PM Sep 21, 2023Observed: 2.58 ft at 9:50PM Sep 21, 2023Observed: 2.59 ft at 10:00PM Sep 21, 2023Observed: 2.57 ft at 10:10PM Sep 21, 2023Observed: 2.58 ft at 10:20PM Sep 21, 2023Observed: 2.6 ft at 10:30PM Sep 21, 2023Observed: 2.59 ft at 10:40PM Sep 21, 2023Observed: 2.58 ft at 10:50PM Sep 21, 2023Observed: 2.6 ft at 11:00PM Sep 21, 2023Observed: 2.6 ft at 11:10PM Sep 21, 2023Observed: 2.58 ft at 11:20PM Sep 21, 2023Highest Observation: 2.75 ft at 11:30PM Sep 21, 2023Observed: 2.59 ft at 12:10AM Sep 22, 2023Observed: 2.57 ft at 12:20AM Sep 22, 2023Observed: 2.6 ft at 12:30AM Sep 22, 2023Observed: 2.58 ft at 12:40AM Sep 22, 2023Observed: 2.6 ft at 12:50AM Sep 22, 2023Observed: 2.57 ft at 1:00AM Sep 22, 2023Observed: 2.58 ft at 1:10AM Sep 22, 2023Observed: 2.58 ft at 1:20AM Sep 22, 2023Observed: 2.58 ft at 1:30AM Sep 22, 2023Observed: 2.57 ft at 1:40AM Sep 22, 2023Observed: 2.6 ft at 1:50AM Sep 22, 2023Observed: 2.58 ft at 2:00AM Sep 22, 2023Observed: 2.59 ft at 2:10AM Sep 22, 2023Observed: 2.58 ft at 2:20AM Sep 22, 2023Observed: 2.57 ft at 2:30AM Sep 22, 2023Observed: 2.59 ft at 2:40AM Sep 22, 2023Observed: 2.6 ft at 2:50AM Sep 22, 2023Observed: 2.6 ft at 3:00AM Sep 22, 2023Observed: 2.59 ft at 3:10AM Sep 22, 2023Observed: 2.61 ft at 3:20AM Sep 22, 2023Observed: 2.6 ft at 3:30AM Sep 22, 2023Observed: 2.6 ft at 3:40AM Sep 22, 2023Observed: 2.58 ft at 3:50AM Sep 22, 2023Observed: 2.61 ft at 4:00AM Sep 22, 2023Observed: 2.6 ft at 4:10AM Sep 22, 2023Observed: 2.63 ft at 4:20AM Sep 22, 2023Observed: 2.58 ft at 4:30AM Sep 22, 2023Observed: 2.62 ft at 4:40AM Sep 22, 2023Observed: 2.57 ft at 4:50AM Sep 22, 2023Observed: 2.62 ft at 5:00AM Sep 22, 2023Observed: 2.59 ft at 5:10AM Sep 22, 2023Observed: 2.68 ft at 5:20AM Sep 22, 2023Observed: 2.57 ft at 5:30AM Sep 22, 2023Observed: 2.59 ft at 5:40AM Sep 22, 2023Observed: 2.57 ft at 5:50AM Sep 22, 2023Observed: 2.57 ft at 6:00AM Sep 22, 2023Observed: 2.57 ft at 6:10AM Sep 22, 2023Observed: 2.46 ft at 6:20AM Sep 22, 2023Observed: 2.55 ft at 7:10AM Sep 22, 2023Observed: 2.6 ft at 7:20AM Sep 22, 2023Observed: 2.56 ft at 7:30AM Sep 22, 2023Observed: 2.56 ft at 7:40AM Sep 22, 2023Observed: 2.55 ft at 7:50AM Sep 22, 2023Observed: 2.57 ft at 8:00AM Sep 22, 2023Observed: 2.56 ft at 8:10AM Sep 22, 2023Observed: 2.57 ft at 8:20AM Sep 22, 2023Observed: 2.56 ft at 8:30AM Sep 22, 2023Observed: 2.55 ft at 8:50AM Sep 22, 2023Observed: 2.56 ft at 9:00AM Sep 22, 2023Observed: 2.56 ft at 9:10AM Sep 22, 2023Observed: 2.55 ft at 9:20AM Sep 22, 2023Observed: 2.57 ft at 9:30AM Sep 22, 2023Observed: 2.56 ft at 9:40AM Sep 22, 2023Observed: 2.54 ft at 9:50AM Sep 22, 2023Observed: 2.56 ft at 10:00AM Sep 22, 2023Observed: 2.56 ft at 10:10AM Sep 22, 2023Observed: 2.54 ft at 10:20AM Sep 22, 2023Observed: 2.56 ft at 10:30AM Sep 22, 2023Observed: 2.57 ft at 10:40AM Sep 22, 2023Observed: 2.55 ft at 10:50AM Sep 22, 2023Observed: 2.55 ft at 11:00AM Sep 22, 2023Observed: 2.54 ft at 11:10AM Sep 22, 2023Observed: 2.57 ft at 11:20AM Sep 22, 2023Observed: 2.56 ft at 11:30AM Sep 22, 2023Observed: 2.57 ft at 11:40AM Sep 22, 2023Observed: 2.55 ft at 11:50AM Sep 22, 2023Observed: 2.55 ft at 12:00PM Sep 22, 2023Observed: 2.55 ft at 12:10PM Sep 22, 2023Observed: 2.55 ft at 12:20PM Sep 22, 2023Observed: 2.57 ft at 12:30PM Sep 22, 2023Observed: 2.56 ft at 12:40PM Sep 22, 2023Observed: 2.56 ft at 12:50PM Sep 22, 2023Observed: 2.55 ft at 1:00PM Sep 22, 2023Observed: 2.57 ft at 1:10PM Sep 22, 2023Observed: 2.54 ft at 1:20PM Sep 22, 2023Observed: 2.53 ft at 1:40PM Sep 22, 2023Observed: 2.53 ft at 1:50PM Sep 22, 2023Observed: 2.55 ft at 2:00PM Sep 22, 2023Observed: 2.52 ft at 2:10PM Sep 22, 2023Observed: 2.53 ft at 2:20PM Sep 22, 2023Observed: 2.52 ft at 2:30PM Sep 22, 2023Observed: 2.52 ft at 2:40PM Sep 22, 2023Observed: 2.54 ft at 2:50PM Sep 22, 2023Observed: 2.52 ft at 3:00PM Sep 22, 2023Observed: 2.52 ft at 3:10PM Sep 22, 2023Observed: 2.52 ft at 3:20PM Sep 22, 2023Observed: 2.55 ft at 3:30PM Sep 22, 2023Observed: 2.54 ft at 4:10PM Sep 22, 2023Observed: 2.54 ft at 4:20PM Sep 22, 2023Observed: 2.53 ft at 4:30PM Sep 22, 2023Observed: 2.52 ft at 4:40PM Sep 22, 2023Observed: 2.56 ft at 4:50PM Sep 22, 2023Observed: 2.54 ft at 5:00PM Sep 22, 2023Observed: 2.61 ft at 5:10PM Sep 22, 2023Observed: 2.52 ft at 5:20PM Sep 22, 2023Observed: 2.59 ft at 5:30PM Sep 22, 2023Observed: 2.56 ft at 5:40PM Sep 22, 2023Observed: 2.57 ft at 5:50PM Sep 22, 2023Observed: 2.57 ft at 6:00PM Sep 22, 2023Observed: 2.55 ft at 6:10PM Sep 22, 2023Observed: 2.53 ft at 6:20PM Sep 22, 2023Observed: 2.56 ft at 6:30PM Sep 22, 2023Observed: 2.56 ft at 6:40PM Sep 22, 2023Observed: 2.57 ft at 6:50PM Sep 22, 2023Observed: 2.55 ft at 7:00PM Sep 22, 2023Observed: 2.59 ft at 7:10PM Sep 22, 2023Observed: 2.56 ft at 7:20PM Sep 22, 2023Observed: 2.67 ft at 7:30PM Sep 22, 2023Observed: 2.52 ft at 7:40PM Sep 22, 2023Observed: 2.58 ft at 7:50PM Sep 22, 2023Observed: 2.55 ft at 8:00PM Sep 22, 2023Observed: 2.57 ft at 8:10PM Sep 22, 2023Observed: 2.51 ft at 8:20PM Sep 22, 2023Observed: 2.58 ft at 8:30PM Sep 22, 2023Observed: 2.57 ft at 8:40PM Sep 22, 2023Observed: 2.57 ft at 8:50PM Sep 22, 2023Observed: 2.56 ft at 9:00PM Sep 22, 2023Observed: 2.53 ft at 9:10PM Sep 22, 2023Observed: 2.54 ft at 9:20PM Sep 22, 2023Observed: 2.56 ft at 9:40PM Sep 22, 2023Observed: 2.56 ft at 9:50PM Sep 22, 2023Observed: 2.56 ft at 10:00PM Sep 22, 2023Observed: 2.58 ft at 10:10PM Sep 22, 2023Observed: 2.55 ft at 10:20PM Sep 22, 2023Observed: 2.52 ft at 10:30PM Sep 22, 2023Observed: 2.51 ft at 10:40PM Sep 22, 2023Observed: 2.59 ft at 10:50PM Sep 22, 2023Observed: 2.52 ft at 11:00PM Sep 22, 2023Observed: 2.53 ft at 11:10PM Sep 22, 2023Observed: 2.48 ft at 11:20PM Sep 22, 2023Observed: 2.54 ft at 11:30PM Sep 22, 2023Observed: 2.52 ft at 11:40PM Sep 22, 2023Observed: 2.53 ft at 11:50PM Sep 22, 2023Observed: 2.49 ft at 12:00AM Sep 23, 2023Observed: 2.54 ft at 12:10AM Sep 23, 2023Observed: 2.51 ft at 12:20AM Sep 23, 2023Observed: 2.55 ft at 12:30AM Sep 23, 2023Observed: 2.54 ft at 12:40AM Sep 23, 2023Observed: 2.51 ft at 12:50AM Sep 23, 2023Observed: 2.52 ft at 1:00AM Sep 23, 2023Observed: 2.5 ft at 1:10AM Sep 23, 2023Observed: 2.57 ft at 1:20AM Sep 23, 2023Observed: 2.53 ft at 1:30AM Sep 23, 2023Observed: 2.52 ft at 1:40AM Sep 23, 2023Observed: 2.53 ft at 1:50AM Sep 23, 2023Observed: 2.53 ft at 2:00AM Sep 23, 2023Observed: 2.53 ft at 2:10AM Sep 23, 2023Observed: 2.53 ft at 2:20AM Sep 23, 2023Observed: 2.53 ft at 2:30AM Sep 23, 2023Observed: 2.65 ft at 2:40AM Sep 23, 2023Observed: 2.5 ft at 3:00AM Sep 23, 2023Observed: 2.57 ft at 3:40AM Sep 23, 2023Observed: 2.53 ft at 3:50AM Sep 23, 2023Observed: 2.53 ft at 4:00AM Sep 23, 2023Observed: 2.55 ft at 4:10AM Sep 23, 2023Observed: 2.54 ft at 4:20AM Sep 23, 2023Observed: 2.57 ft at 4:30AM Sep 23, 2023Observed: 2.55 ft at 4:40AM Sep 23, 2023Observed: 2.53 ft at 4:50AM Sep 23, 2023Observed: 2.55 ft at 5:00AM Sep 23, 2023Observed: 2.53 ft at 5:10AM Sep 23, 2023Observed: 2.54 ft at 5:20AM Sep 23, 2023Observed: 2.54 ft at 5:30AM Sep 23, 2023Observed: 2.53 ft at 5:40AM Sep 23, 2023Observed: 2.54 ft at 5:50AM Sep 23, 2023Observed: 2.54 ft at 6:00AM Sep 23, 2023Observed: 2.54 ft at 6:10AM Sep 23, 2023Observed: 2.55 ft at 6:20AM Sep 23, 2023Observed: 2.54 ft at 6:30AM Sep 23, 2023Observed: 2.55 ft at 6:40AM Sep 23, 2023Observed: 2.55 ft at 6:50AM Sep 23, 2023Observed: 2.53 ft at 7:00AM Sep 23, 2023Observed: 2.55 ft at 7:10AM Sep 23, 2023Observed: 2.55 ft at 7:20AM Sep 23, 2023Observed: 2.56 ft at 7:30AM Sep 23, 2023Observed: 2.54 ft at 7:40AM Sep 23, 2023Observed: 2.58 ft at 7:50AM Sep 23, 2023Observed: 2.57 ft at 8:00AM Sep 23, 2023Observed: 2.56 ft at 8:10AM Sep 23, 2023Observed: 2.56 ft at 8:20AM Sep 23, 2023Observed: 2.57 ft at 8:30AM Sep 23, 2023Observed: 2.56 ft at 8:40AM Sep 23, 2023Observed: 2.55 ft at 8:50AM Sep 23, 2023Observed: 2.52 ft at 9:00AM Sep 23, 2023Observed: 2.54 ft at 9:10AM Sep 23, 2023Observed: 2.53 ft at 9:20AM Sep 23, 2023Observed: 2.53 ft at 9:30AM Sep 23, 2023Observed: 2.54 ft at 9:40AM Sep 23, 2023Observed: 2.54 ft at 9:50AM Sep 23, 2023Observed: 2.55 ft at 10:00AM Sep 23, 2023Observed: 2.53 ft at 10:10AM Sep 23, 2023Observed: 2.55 ft at 10:20AM Sep 23, 2023Observed: 2.52 ft at 10:30AM Sep 23, 2023Observed: 2.53 ft at 10:40AM Sep 23, 2023Observed: 2.53 ft at 10:50AM Sep 23, 2023Observed: 2.51 ft at 11:00AM Sep 23, 2023Observed: 2.56 ft at 11:10AM Sep 23, 2023Observed: 2.55 ft at 11:20AM Sep 23, 2023Observed: 2.57 ft at 11:30AM Sep 23, 2023Observed: 2.57 ft at 11:40AM Sep 23, 2023Observed: 2.58 ft at 11:50AM Sep 23, 2023Observed: 2.55 ft at 12:00PM Sep 23, 2023Observed: 2.56 ft at 12:10PM Sep 23, 2023Observed: 2.59 ft at 12:20PM Sep 23, 2023Observed: 2.57 ft at 12:30PM Sep 23, 2023Observed: 2.56 ft at 12:40PM Sep 23, 2023Observed: 2.56 ft at 12:50PM Sep 23, 2023Observed: 2.59 ft at 1:00PM Sep 23, 2023Observed: 2.58 ft at 1:10PM Sep 23, 2023Observed: 2.61 ft at 1:20PM Sep 23, 2023Observed: 2.57 ft at 1:30PM Sep 23, 2023Observed: 2.61 ft at 1:40PM Sep 23, 2023Observed: 2.59 ft at 1:50PM Sep 23, 2023Observed: 2.59 ft at 2:00PM Sep 23, 2023Observed: 2.61 ft at 2:10PM Sep 23, 2023Observed: 2.61 ft at 2:20PM Sep 23, 2023Observed: 2.57 ft at 2:30PM Sep 23, 2023Observed: 2.52 ft at 3:10PM Sep 23, 2023Observed: 2.53 ft at 3:20PM Sep 23, 2023Observed: 2.53 ft at 3:30PM Sep 23, 2023Observed: 2.5 ft at 3:40PM Sep 23, 2023Observed: 2.53 ft at 3:50PM Sep 23, 2023Observed: 2.53 ft at 4:00PM Sep 23, 2023Observed: 2.51 ft at 4:10PM Sep 23, 2023Observed: 2.55 ft at 4:20PM Sep 23, 2023Observed: 2.49 ft at 4:30PM Sep 23, 2023Observed: 2.51 ft at 4:40PM Sep 23, 2023Observed: 2.53 ft at 4:50PM Sep 23, 2023Observed: 2.5 ft at 5:00PM Sep 23, 2023Observed: 2.53 ft at 5:10PM Sep 23, 2023Observed: 2.53 ft at 5:20PM Sep 23, 2023Observed: 2.52 ft at 5:30PM Sep 23, 2023Observed: 2.52 ft at 6:10PM Sep 23, 2023Observed: 2.52 ft at 6:20PM Sep 23, 2023Observed: 2.52 ft at 6:30PM Sep 23, 2023Observed: 2.56 ft at 6:40PM Sep 23, 2023Observed: 2.52 ft at 6:50PM Sep 23, 2023Observed: 2.51 ft at 7:00PM Sep 23, 2023Observed: 2.54 ft at 7:10PM Sep 23, 2023Observed: 2.53 ft at 7:20PM Sep 23, 2023Observed: 2.54 ft at 7:30PM Sep 23, 2023Observed: 2.49 ft at 7:40PM Sep 23, 2023Observed: 2.58 ft at 7:50PM Sep 23, 2023Observed: 2.57 ft at 8:00PM Sep 23, 2023Observed: 2.53 ft at 8:10PM Sep 23, 2023Observed: 2.54 ft at 8:20PM Sep 23, 2023Observed: 2.53 ft at 8:30PM Sep 23, 2023Observed: 2.54 ft at 8:40PM Sep 23, 2023Observed: 2.52 ft at 8:50PM Sep 23, 2023Observed: 2.53 ft at 9:00PM Sep 23, 2023Observed: 2.53 ft at 9:10PM Sep 23, 2023Observed: 2.51 ft at 9:20PM Sep 23, 2023Observed: 2.49 ft at 9:30PM Sep 23, 2023Observed: 2.51 ft at 9:40PM Sep 23, 2023Observed: 2.51 ft at 9:50PM Sep 23, 2023Observed: 2.51 ft at 10:00PM Sep 23, 2023Observed: 2.51 ft at 10:10PM Sep 23, 2023Observed: 2.51 ft at 10:20PM Sep 23, 2023Observed: 2.52 ft at 10:30PM Sep 23, 2023Observed: 2.52 ft at 10:40PM Sep 23, 2023Observed: 2.52 ft at 10:50PM Sep 23, 2023Observed: 2.47 ft at 11:00PM Sep 23, 2023Observed: 2.47 ft at 11:10PM Sep 23, 2023Observed: 2.59 ft at 11:20PM Sep 23, 2023Observed: 2.66 ft at 11:30PM Sep 23, 2023Observed: 2.65 ft at 11:40PM Sep 23, 2023Observed: 2.61 ft at 11:50PM Sep 23, 2023Observed: 2.55 ft at 12:00AM Sep 24, 2023Observed: 2.56 ft at 12:10AM Sep 24, 2023Observed: 2.65 ft at 12:20AM Sep 24, 2023Observed: 2.53 ft at 12:30AM Sep 24, 2023Observed: 2.54 ft at 12:40AM Sep 24, 2023Observed: 2.54 ft at 12:50AM Sep 24, 2023Observed: 2.56 ft at 1:00AM Sep 24, 2023Observed: 2.55 ft at 1:10AM Sep 24, 2023Observed: 2.55 ft at 1:20AM Sep 24, 2023Observed: 2.54 ft at 1:30AM Sep 24, 2023Observed: 2.58 ft at 1:40AM Sep 24, 2023Observed: 2.54 ft at 1:50AM Sep 24, 2023Observed: 2.54 ft at 2:00AM Sep 24, 2023Observed: 2.51 ft at 2:10AM Sep 24, 2023Observed: 2.52 ft at 2:20AM Sep 24, 2023Observed: 2.52 ft at 2:30AM Sep 24, 2023Observed: 2.51 ft at 2:40AM Sep 24, 2023Observed: 2.5 ft at 2:50AM Sep 24, 2023Observed: 2.67 ft at 3:00AM Sep 24, 2023Observed: 2.5 ft at 3:10AM Sep 24, 2023Observed: 2.52 ft at 3:20AM Sep 24, 2023Observed: 2.54 ft at 3:30AM Sep 24, 2023Observed: 2.57 ft at 4:10AM Sep 24, 2023Observed: 2.52 ft at 4:20AM Sep 24, 2023Observed: 2.56 ft at 4:30AM Sep 24, 2023Observed: 2.51 ft at 4:40AM Sep 24, 2023Observed: 2.55 ft at 4:50AM Sep 24, 2023Observed: 2.55 ft at 5:00AM Sep 24, 2023Observed: 2.56 ft at 5:10AM Sep 24, 2023Observed: 2.52 ft at 5:20AM Sep 24, 2023Observed: 2.53 ft at 5:30AM Sep 24, 2023Observed: 2.54 ft at 5:40AM Sep 24, 2023Observed: 2.52 ft at 5:50AM Sep 24, 2023Observed: 2.53 ft at 6:00AM Sep 24, 2023Observed: 2.54 ft at 6:10AM Sep 24, 2023Observed: 2.52 ft at 6:20AM Sep 24, 2023Observed: 2.72 ft at 6:30AM Sep 24, 2023Observed: 2.55 ft at 6:40AM Sep 24, 2023Observed: 2.55 ft at 6:50AM Sep 24, 2023Observed: 2.53 ft at 7:00AM Sep 24, 2023Observed: 2.55 ft at 7:10AM Sep 24, 2023Observed: 2.54 ft at 7:20AM Sep 24, 2023Observed: 2.53 ft at 7:30AM Sep 24, 2023Observed: 2.53 ft at 7:40AM Sep 24, 2023Observed: 2.55 ft at 7:50AM Sep 24, 2023Observed: 2.53 ft at 8:00AM Sep 24, 2023Observed: 2.56 ft at 8:10AM Sep 24, 2023Observed: 2.58 ft at 8:20AM Sep 24, 2023Observed: 2.58 ft at 8:30AM Sep 24, 2023Observed: 2.65 ft at 8:40AM Sep 24, 2023Observed: 2.61 ft at 8:50AM Sep 24, 2023Observed: 2.53 ft at 9:00AM Sep 24, 2023Observed: 2.51 ft at 9:10AM Sep 24, 2023Observed: 2.53 ft at 9:20AM Sep 24, 2023Observed: 2.53 ft at 9:30AM Sep 24, 2023Observed: 2.55 ft at 9:40AM Sep 24, 2023Observed: 2.55 ft at 9:50AM Sep 24, 2023Observed: 2.54 ft at 10:00AM Sep 24, 2023Observed: 2.48 ft at 10:10AM Sep 24, 2023Observed: 2.51 ft at 10:20AM Sep 24, 2023Observed: 2.52 ft at 10:30AM Sep 24, 2023Observed: 2.51 ft at 10:40AM Sep 24, 2023Observed: 2.53 ft at 10:50AM Sep 24, 2023Observed: 2.53 ft at 11:00AM Sep 24, 2023Observed: 2.52 ft at 11:10AM Sep 24, 2023Observed: 2.52 ft at 11:20AM Sep 24, 2023Observed: 2.5 ft at 11:30AM Sep 24, 2023Observed: 2.51 ft at 11:40AM Sep 24, 2023Observed: 2.51 ft at 11:50AM Sep 24, 2023Observed: 2.51 ft at 12:00PM Sep 24, 2023Observed: 2.53 ft at 12:10PM Sep 24, 2023Observed: 2.51 ft at 12:20PM Sep 24, 2023Observed: 2.5 ft at 12:30PM Sep 24, 2023Observed: 2.53 ft at 12:40PM Sep 24, 2023Observed: 2.51 ft at 12:50PM Sep 24, 2023Observed: 2.5 ft at 1:00PM Sep 24, 2023Observed: 2.51 ft at 1:10PM Sep 24, 2023Observed: 2.5 ft at 1:20PM Sep 24, 2023Observed: 2.51 ft at 1:30PM Sep 24, 2023Observed: 2.52 ft at 1:40PM Sep 24, 2023Observed: 2.57 ft at 1:50PM Sep 24, 2023Observed: 2.51 ft at 2:00PM Sep 24, 2023Observed: 2.54 ft at 2:10PM Sep 24, 2023Observed: 2.52 ft at 2:20PM Sep 24, 2023Observed: 2.51 ft at 2:30PM Sep 24, 2023Observed: 2.53 ft at 2:40PM Sep 24, 2023Observed: 2.5 ft at 2:50PM Sep 24, 2023Observed: 2.49 ft at 3:00PM Sep 24, 2023Observed: 2.5 ft at 3:10PM Sep 24, 2023Observed: 2.58 ft at 3:20PM Sep 24, 2023Observed: 2.48 ft at 3:30PM Sep 24, 2023Observed: 2.48 ft at 3:40PM Sep 24, 2023Observed: 2.5 ft at 3:50PM Sep 24, 2023Observed: 2.5 ft at 4:00PM Sep 24, 2023Observed: 2.51 ft at 4:10PM Sep 24, 2023Observed: 2.49 ft at 4:20PM Sep 24, 2023Observed: 2.49 ft at 4:30PM Sep 24, 2023Observed: 2.48 ft at 4:40PM Sep 24, 2023Observed: 2.52 ft at 4:50PM Sep 24, 2023Observed: 2.51 ft at 5:00PM Sep 24, 2023Observed: 2.48 ft at 5:10PM Sep 24, 2023Observed: 2.49 ft at 5:20PM Sep 24, 2023Observed: 2.52 ft at 5:30PM Sep 24, 2023Observed: 2.51 ft at 5:40PM Sep 24, 2023Observed: 2.5 ft at 5:50PM Sep 24, 2023Observed: 2.52 ft at 6:00PM Sep 24, 2023Observed: 2.51 ft at 6:10PM Sep 24, 2023Observed: 2.49 ft at 6:20PM Sep 24, 2023Observed: 2.52 ft at 6:30PM Sep 24, 2023Observed: 2.51 ft at 6:40PM Sep 24, 2023Observed: 2.5 ft at 6:50PM Sep 24, 2023Observed: 2.51 ft at 7:00PM Sep 24, 2023Observed: 2.52 ft at 7:10PM Sep 24, 2023Observed: 2.53 ft at 7:20PM Sep 24, 2023Observed: 2.51 ft at 7:30PM Sep 24, 2023Observed: 2.53 ft at 7:40PM Sep 24, 2023Observed: 2.53 ft at 7:50PM Sep 24, 2023Observed: 2.53 ft at 8:00PM Sep 24, 2023Observed: 2.5 ft at 8:10PM Sep 24, 2023Observed: 2.53 ft at 8:20PM Sep 24, 2023Observed: 2.51 ft at 8:30PM Sep 24, 2023Observed: 2.53 ft at 8:40PM Sep 24, 2023Observed: 2.64 ft at 8:50PM Sep 24, 2023Observed: 2.55 ft at 9:00PM Sep 24, 2023Observed: 2.5 ft at 9:40PM Sep 24, 2023Observed: 2.52 ft at 9:50PM Sep 24, 2023Observed: 2.48 ft at 10:00PM Sep 24, 2023Observed: 2.5 ft at 10:10PM Sep 24, 2023Observed: 2.51 ft at 10:20PM Sep 24, 2023Observed: 2.48 ft at 10:30PM Sep 24, 2023Observed: 2.46 ft at 10:40PM Sep 24, 2023Observed: 2.57 ft at 10:50PM Sep 24, 2023Observed: 2.51 ft at 11:00PM Sep 24, 2023Observed: 2.52 ft at 11:10PM Sep 24, 2023Observed: 2.53 ft at 11:20PM Sep 24, 2023Observed: 2.52 ft at 11:30PM Sep 24, 2023Observed: 2.54 ft at 11:40PM Sep 24, 2023Observed: 2.56 ft at 11:50PM Sep 24, 2023Observed: 2.52 ft at 12:00AM Sep 25, 2023Observed: 2.53 ft at 12:10AM Sep 25, 2023Observed: 2.5 ft at 12:20AM Sep 25, 2023Observed: 2.52 ft at 12:30AM Sep 25, 2023Observed: 2.54 ft at 12:40AM Sep 25, 2023Observed: 2.52 ft at 12:50AM Sep 25, 2023Observed: 2.53 ft at 1:00AM Sep 25, 2023Observed: 2.51 ft at 1:10AM Sep 25, 2023Observed: 2.51 ft at 1:20AM Sep 25, 2023Observed: 2.5 ft at 1:30AM Sep 25, 2023Observed: 2.54 ft at 1:40AM Sep 25, 2023Observed: 2.54 ft at 1:50AM Sep 25, 2023Observed: 2.53 ft at 2:00AM Sep 25, 2023Observed: 2.53 ft at 2:10AM Sep 25, 2023Observed: 2.61 ft at 2:20AM Sep 25, 2023Observed: 2.49 ft at 2:30AM Sep 25, 2023Observed: 2.52 ft at 2:40AM Sep 25, 2023Observed: 2.52 ft at 2:50AM Sep 25, 2023Observed: 2.46 ft at 3:00AM Sep 25, 2023Observed: 2.49 ft at 3:10AM Sep 25, 2023Observed: 2.52 ft at 3:20AM Sep 25, 2023Observed: 2.54 ft at 3:30AM Sep 25, 2023Observed: 2.44 ft at 3:40AM Sep 25, 2023Observed: 2.54 ft at 3:50AM Sep 25, 2023Observed: 2.51 ft at 4:00AM Sep 25, 2023Observed: 2.54 ft at 4:10AM Sep 25, 2023Observed: 2.53 ft at 4:20AM Sep 25, 2023Observed: 2.54 ft at 4:30AM Sep 25, 2023Observed: 2.53 ft at 4:40AM Sep 25, 2023Observed: 2.51 ft at 4:50AM Sep 25, 2023Observed: 2.53 ft at 5:00AM Sep 25, 2023Observed: 2.53 ft at 5:10AM Sep 25, 2023Observed: 2.52 ft at 5:20AM Sep 25, 2023Observed: 2.53 ft at 5:30AM Sep 25, 2023Observed: 2.52 ft at 5:40AM Sep 25, 2023Observed: 2.54 ft at 5:50AM Sep 25, 2023Observed: 2.51 ft at 6:00AM Sep 25, 2023Observed: 2.51 ft at 6:10AM Sep 25, 2023Observed: 2.52 ft at 6:20AM Sep 25, 2023Observed: 2.56 ft at 6:30AM Sep 25, 2023Observed: 2.53 ft at 6:40AM Sep 25, 2023Observed: 2.51 ft at 6:50AM Sep 25, 2023Observed: 2.53 ft at 7:00AM Sep 25, 2023Observed: 2.52 ft at 7:10AM Sep 25, 2023Observed: 2.52 ft at 7:20AM Sep 25, 2023Observed: 2.54 ft at 7:30AM Sep 25, 2023Observed: 2.52 ft at 7:40AM Sep 25, 2023Observed: 2.51 ft at 7:50AM Sep 25, 2023Observed: 2.51 ft at 8:00AM Sep 25, 2023Observed: 2.52 ft at 8:10AM Sep 25, 2023Observed: 2.51 ft at 8:20AM Sep 25, 2023Observed: 2.52 ft at 8:30AM Sep 25, 2023Observed: 2.52 ft at 8:40AM Sep 25, 2023Observed: 2.49 ft at 8:50AM Sep 25, 2023Observed: 2.51 ft at 9:00AM Sep 25, 2023Observed: 2.56 ft at 9:10AM Sep 25, 2023Observed: 2.52 ft at 9:20AM Sep 25, 2023Observed: 2.48 ft at 9:30AM Sep 25, 2023Observed: 2.48 ft at 9:40AM Sep 25, 2023Observed: 2.5 ft at 9:50AM Sep 25, 2023Observed: 2.49 ft at 10:00AM Sep 25, 2023Observed: 2.52 ft at 10:10AM Sep 25, 2023Observed: 2.5 ft at 10:20AM Sep 25, 2023Observed: 2.51 ft at 10:30AM Sep 25, 2023Observed: 2.5 ft at 10:40AM Sep 25, 2023Observed: 2.49 ft at 10:50AM Sep 25, 2023Observed: 2.47 ft at 11:00AM Sep 25, 2023Observed: 2.45 ft at 11:10AM Sep 25, 2023Observed: 2.53 ft at 11:20AM Sep 25, 2023Observed: 2.51 ft at 11:30AM Sep 25, 2023Observed: 2.65 ft at 11:40AM Sep 25, 2023Observed: 2.52 ft at 11:50AM Sep 25, 2023Observed: 2.51 ft at 12:00PM Sep 25, 2023Observed: 2.49 ft at 12:10PM Sep 25, 2023Observed: 2.49 ft at 12:20PM Sep 25, 2023Observed: 2.49 ft at 12:30PM Sep 25, 2023Observed: 2.5 ft at 12:40PM Sep 25, 2023Observed: 2.47 ft at 12:50PM Sep 25, 2023Observed: 2.5 ft at 1:00PM Sep 25, 2023Observed: 2.49 ft at 1:10PM Sep 25, 2023Observed: 2.51 ft at 1:20PM Sep 25, 2023Observed: 2.48 ft at 1:30PM Sep 25, 2023Observed: 2.47 ft at 1:40PM Sep 25, 2023Observed: 2.5 ft at 1:50PM Sep 25, 2023Observed: 2.5 ft at 2:00PM Sep 25, 2023Observed: 2.49 ft at 2:10PM Sep 25, 2023Observed: 2.51 ft at 2:20PM Sep 25, 2023Observed: 2.5 ft at 2:30PM Sep 25, 2023Observed: 2.51 ft at 2:40PM Sep 25, 2023Observed: 2.53 ft at 2:50PM Sep 25, 2023Observed: 2.53 ft at 3:00PM Sep 25, 2023Observed: 2.48 ft at 3:10PM Sep 25, 2023Observed: 2.48 ft at 3:20PM Sep 25, 2023Observed: 2.48 ft at 3:30PM Sep 25, 2023Observed: 2.49 ft at 3:40PM Sep 25, 2023Observed: 2.48 ft at 3:50PM Sep 25, 2023Observed: 2.47 ft at 4:00PM Sep 25, 2023Observed: 2.48 ft at 4:10PM Sep 25, 2023Observed: 2.47 ft at 4:20PM Sep 25, 2023Observed: 2.5 ft at 4:30PM Sep 25, 2023Observed: 2.5 ft at 4:40PM Sep 25, 2023Observed: 2.47 ft at 4:50PM Sep 25, 2023Observed: 2.48 ft at 5:00PM Sep 25, 2023Observed: 2.46 ft at 5:10PM Sep 25, 2023Observed: 2.46 ft at 5:20PM Sep 25, 2023Observed: 2.48 ft at 5:30PM Sep 25, 2023Observed: 2.48 ft at 5:40PM Sep 25, 2023Observed: 2.49 ft at 5:50PM Sep 25, 2023Observed: 2.48 ft at 6:00PM Sep 25, 2023Observed: 2.47 ft at 6:10PM Sep 25, 2023Observed: 2.48 ft at 6:20PM Sep 25, 2023Observed: 2.48 ft at 6:30PM Sep 25, 2023Observed: 2.48 ft at 6:40PM Sep 25, 2023Observed: 2.48 ft at 6:50PM Sep 25, 2023Observed: 2.49 ft at 7:00PM Sep 25, 2023Observed: 2.5 ft at 7:10PM Sep 25, 2023Observed: 2.5 ft at 7:20PM Sep 25, 2023Observed: 2.48 ft at 7:30PM Sep 25, 2023Observed: 2.48 ft at 7:40PM Sep 25, 2023Observed: 2.5 ft at 7:50PM Sep 25, 2023Observed: 2.48 ft at 8:00PM Sep 25, 2023Observed: 2.49 ft at 8:10PM Sep 25, 2023Observed: 2.48 ft at 8:20PM Sep 25, 2023Observed: 2.47 ft at 8:30PM Sep 25, 2023Observed: 2.47 ft at 8:40PM Sep 25, 2023Observed: 2.45 ft at 8:50PM Sep 25, 2023Observed: 2.55 ft at 9:00PM Sep 25, 2023Observed: 2.5 ft at 9:10PM Sep 25, 2023Observed: 2.48 ft at 9:20PM Sep 25, 2023Observed: 2.49 ft at 9:30PM Sep 25, 2023Observed: 2.54 ft at 9:40PM Sep 25, 2023Observed: 2.47 ft at 9:50PM Sep 25, 2023Observed: 2.44 ft at 10:00PM Sep 25, 2023Observed: 2.5 ft at 10:10PM Sep 25, 2023Observed: 2.49 ft at 10:20PM Sep 25, 2023Observed: 2.47 ft at 10:30PM Sep 25, 2023Observed: 2.49 ft at 10:40PM Sep 25, 2023Observed: 2.5 ft at 10:50PM Sep 25, 2023Observed: 2.48 ft at 11:00PM Sep 25, 2023Observed: 2.5 ft at 11:10PM Sep 25, 2023Observed: 2.49 ft at 11:20PM Sep 25, 2023Observed: 2.48 ft at 11:30PM Sep 25, 2023Observed: 2.47 ft at 12:10AM Sep 26, 2023Observed: 2.49 ft at 12:20AM Sep 26, 2023Observed: 2.49 ft at 12:30AM Sep 26, 2023Observed: 2.47 ft at 12:40AM Sep 26, 2023Observed: 2.47 ft at 12:50AM Sep 26, 2023Observed: 2.48 ft at 1:00AM Sep 26, 2023Observed: 2.49 ft at 1:10AM Sep 26, 2023Observed: 2.49 ft at 1:20AM Sep 26, 2023Observed: 2.47 ft at 1:30AM Sep 26, 2023Observed: 2.5 ft at 2:10AM Sep 26, 2023Observed: 2.48 ft at 2:20AM Sep 26, 2023Observed: 2.48 ft at 2:30AM Sep 26, 2023Observed: 2.48 ft at 2:40AM Sep 26, 2023Observed: 2.48 ft at 2:50AM Sep 26, 2023Observed: 2.49 ft at 3:00AM Sep 26, 2023Observed: 2.48 ft at 3:10AM Sep 26, 2023Observed: 2.48 ft at 3:20AM Sep 26, 2023Observed: 2.48 ft at 3:30AM Sep 26, 2023Observed: 2.48 ft at 3:40AM Sep 26, 2023Observed: 2.48 ft at 3:50AM Sep 26, 2023Observed: 2.47 ft at 4:00AM Sep 26, 2023Observed: 2.49 ft at 4:10AM Sep 26, 2023Observed: 2.48 ft at 4:20AM Sep 26, 2023Observed: 2.47 ft at 4:30AM Sep 26, 2023Observed: 2.48 ft at 4:40AM Sep 26, 2023Observed: 2.47 ft at 4:50AM Sep 26, 2023Observed: 2.46 ft at 5:00AM Sep 26, 2023Observed: 2.47 ft at 5:10AM Sep 26, 2023Observed: 2.47 ft at 5:20AM Sep 26, 2023Observed: 2.46 ft at 5:30AM Sep 26, 2023Observed: 2.47 ft at 5:40AM Sep 26, 2023Observed: 2.48 ft at 5:50AM Sep 26, 2023Observed: 2.47 ft at 6:00AM Sep 26, 2023Observed: 2.48 ft at 6:10AM Sep 26, 2023Observed: 2.46 ft at 6:20AM Sep 26, 2023Observed: 2.46 ft at 6:30AM Sep 26, 2023Observed: 2.46 ft at 6:40AM Sep 26, 2023Observed: 2.46 ft at 6:50AM Sep 26, 2023Observed: 2.47 ft at 7:00AM Sep 26, 2023Observed: 2.46 ft at 7:10AM Sep 26, 2023Observed: 2.46 ft at 7:20AM Sep 26, 2023Observed: 2.46 ft at 7:30AM Sep 26, 2023Observed: 2.47 ft at 8:10AM Sep 26, 2023Observed: 2.44 ft at 8:20AM Sep 26, 2023Observed: 2.45 ft at 8:30AM Sep 26, 2023Observed: 2.44 ft at 8:40AM Sep 26, 2023Observed: 2.46 ft at 8:50AM Sep 26, 2023Observed: 2.45 ft at 9:00AM Sep 26, 2023Observed: 2.45 ft at 9:10AM Sep 26, 2023Observed: 2.46 ft at 9:20AM Sep 26, 2023Observed: 2.46 ft at 9:30AM Sep 26, 2023Observed: 2.45 ft at 9:40AM Sep 26, 2023Observed: 2.46 ft at 9:50AM Sep 26, 2023Observed: 2.46 ft at 10:00AM Sep 26, 2023Observed: 2.45 ft at 10:10AM Sep 26, 2023Observed: 2.44 ft at 10:20AM Sep 26, 2023Observed: 2.44 ft at 10:30AM Sep 26, 2023Observed: 2.45 ft at 11:10AM Sep 26, 2023Observed: 2.43 ft at 11:20AM Sep 26, 2023Observed: 2.44 ft at 11:30AM Sep 26, 2023Observed: 2.45 ft at 11:40AM Sep 26, 2023Observed: 2.46 ft at 11:50AM Sep 26, 2023Observed: 2.44 ft at 12:00PM Sep 26, 2023Observed: 2.45 ft at 12:10PM Sep 26, 2023Observed: 2.53 ft at 12:20PM Sep 26, 2023Observed: 2.57 ft at 12:30PM Sep 26, 2023Observed: 2.58 ft at 12:40PM Sep 26, 2023Observed: 2.56 ft at 12:50PM Sep 26, 2023Observed: 2.59 ft at 1:00PM Sep 26, 2023Observed: 2.6 ft at 1:10PM Sep 26, 2023Observed: 2.61 ft at 1:20PM Sep 26, 2023Observed: 2.63 ft at 1:30PM Sep 26, 2023Observed: 2.62 ft at 1:40PM Sep 26, 2023Observed: 2.61 ft at 1:50PM Sep 26, 2023Observed: 2.63 ft at 2:00PM Sep 26, 2023Observed: 2.63 ft at 2:10PM Sep 26, 2023Observed: 2.67 ft at 2:20PM Sep 26, 2023Observed: 2.69 ft at 2:30PM Sep 26, 2023Observed: 2.67 ft at 2:40PM Sep 26, 2023Observed: 2.66 ft at 2:50PM Sep 26, 2023Observed: 2.67 ft at 3:00PM Sep 26, 2023Observed: 2.67 ft at 3:10PM Sep 26, 2023Observed: 2.68 ft at 3:20PM Sep 26, 2023Observed: 2.64 ft at 3:30PM Sep 26, 2023Observed: 2.64 ft at 3:40PM Sep 26, 2023Observed: 2.69 ft at 3:50PM Sep 26, 2023Observed: 2.62 ft at 4:00PM Sep 26, 2023Observed: 2.65 ft at 4:10PM Sep 26, 2023Observed: 2.62 ft at 4:20PM Sep 26, 2023Observed: 2.57 ft at 4:30PM Sep 26, 2023Observed: 2.6 ft at 4:40PM Sep 26, 2023Observed: 2.61 ft at 4:50PM Sep 26, 2023Observed: 2.64 ft at 5:00PM Sep 26, 2023Observed: 2.61 ft at 5:10PM Sep 26, 2023Observed: 2.64 ft at 5:20PM Sep 26, 2023Observed: 2.62 ft at 5:30PM Sep 26, 2023Observed: 2.63 ft at 5:40PM Sep 26, 2023Observed: 2.62 ft at 5:50PM Sep 26, 2023Observed: 2.63 ft at 6:00PM Sep 26, 2023Observed: 2.63 ft at 6:10PM Sep 26, 2023Observed: 2.63 ft at 6:20PM Sep 26, 2023Observed: 2.63 ft at 6:30PM Sep 26, 2023Observed: 2.7 ft at 6:40PM Sep 26, 2023Observed: 2.63 ft at 6:50PM Sep 26, 2023Observed: 2.65 ft at 7:00PM Sep 26, 2023QLDI2(plotting HTIRG) Graph Created (7:40PM Sep 26, 2023)ObservedLatest observed value: 2.65 ft at 7:00 PM CDT 26-Sep-2023. Flood Stage is 18 ft
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Tabular Data (UTC)
Tabular Data (CDT)
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Datum: Not Available
Metadata
NOTE: 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.

NOTE: For the latest navigation status update from the U.S. Army Corps of Engineers-St. Louis District, click here.

NOTE: Forecasts for the Mississippi River at Quincy Lock and Dam 21 are issued routinely year-round.

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Upstream Gauge - at Quincy Upstream Gauge Downstream Gauge Downstream Gauge - at Hannibal
Flood Categories (in feet)
Major Flood Stage: 25
Moderate Flood Stage: 21
Flood Stage: 18
Action Stage: 16
Low Stage (in feet): -9999

Historic Crests
(1) 31.30 ft on 07/13/1993
(2) 30.15 ft on 06/01/2019
(3) 29.58 ft on 06/18/2008
(4) 27.70 ft on 04/25/1973
(5) 27.24 ft on 04/21/2013
(6) 26.55 ft on 05/16/2001
(7) 26.15 ft on 07/08/2014
(8) 24.86 ft on 10/04/1986
(9) 24.74 ft on 06/01/2013
(10) 24.05 ft on 05/29/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 20.37 ft on 05/05/2023
(2) 18.86 ft on 04/02/2020
(3) 19.16 ft on 10/17/2019
(4) 17.29 ft on 10/02/2019
(5) 30.15 ft on 06/01/2019
(6) 23.96 ft on 10/12/2018
(7) 19.62 ft on 09/09/2018
(8) 18.47 ft on 07/05/2018
(9) 18.90 ft on 05/16/2018
(10) 18.52 ft on 06/03/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -3.40 ft on 12/14/1936
(2) -3.00 ft on 12/26/1933
(3) -2.30 ft on 12/10/1910
(4) -2.20 ft on 01/17/1938
(5) -1.60 ft on 12/23/1914
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
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Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
140000 At this approximate discharge, the Corps will raise the gates out of the water, creating "open river" conditions.
26.9 Missouri Highway 168 east of Palmyra near the BASF plant closes near this height.
25.7 At this height, the lock wall is inundated.
25 Quincy Waterworks inundated.
21.9 Near this level, the lock is closed to navigation. This level will vary with circumstance.
14 Unprotected bottomlands flood.
12.3 This is the upper limit of the target pool level at Lock and Dam 21.
12.2 This is the target pool level for navigation at Lock & Dam 21.
12 At some point between 11.6 to 12.1 feet, the Corps will lift all gates out of the river creating "open river" conditions, corresponding to an approximate discharge of 140,000 cfs.
11.8 This is the lower limit of the target pool level at Lock & Dam 21.
Photos
(1) Quincy Lock and Dam 21 pool on 19 June 2008 with a pool reading of 27.48 ft.
(2) Quincy Lock and Dam 21 lock house on 19 June 2008 at a tailwater of 26.59 ft.
(3) Quincy Lock and Dam pool gages on 19 June 2008 (HP=27.48, HT=26.59)
(4) Quincy Lock debris in pool on 19 June 2008 (HP=27.48, HT=26.59)
(5) Quincy Lock and Dam 21 pool on 19 June 2008 (HT=26.59 ft., HP=27.48 ft.)
(6) Cropland flooding west of Illinois Highway 57 on June 25, 2010 at a stage of 21.06 ft.
(7) Aerial View
(8) Upstream View looking north toward Quincy
(9) Pool View looking west toward Missouri
(10) Downstream View
(11) Tailwater Overview looking northwest
(12) Tailwater View looking west toward Missouri
About This Location Collapse

Latitude: 39.902245° N, Longitude: 91.430302° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 18 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 457.8 ft 474.8 ft Datum of 1912
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
St. Louis Weather Forecast Office
12 Missouri Research Park Drive
St. Charles, MO 63304
(636) 441-8467
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