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Hydrograph River at a Glance Download
Mississippi River at Quincy Lock and Dam 21 Tailwater (ft)Flow (kcfs)Observed: 18.8 ft at 7:00AM May 17, 2018Observed: 18.82 ft at 7:10AM May 17, 2018Observed: 18.83 ft at 7:20AM May 17, 2018Observed: 18.8 ft at 7:30AM May 17, 2018Observed: 18.83 ft at 7:40AM May 17, 2018Observed: 18.82 ft at 7:50AM May 17, 2018Observed: 18.79 ft at 8:00AM May 17, 2018Observed: 18.82 ft at 8:10AM May 17, 2018Observed: 18.82 ft at 8:20AM May 17, 2018Observed: 18.83 ft at 8:30AM May 17, 2018Observed: 18.79 ft at 8:40AM May 17, 2018Observed: 18.82 ft at 8:50AM May 17, 2018Observed: 18.83 ft at 9:00AM May 17, 2018Observed: 18.81 ft at 9:10AM May 17, 2018Observed: 18.8 ft at 9:20AM May 17, 2018Observed: 18.81 ft at 9:30AM May 17, 2018Observed: 18.8 ft at 9:40AM May 17, 2018Observed: 18.8 ft at 9:50AM May 17, 2018Observed: 18.83 ft at 10:00AM May 17, 2018Observed: 18.8 ft at 10:10AM May 17, 2018Observed: 18.8 ft at 10:20AM May 17, 2018Observed: 18.82 ft at 10:30AM May 17, 2018Observed: 18.82 ft at 10:40AM May 17, 2018Observed: 18.79 ft at 10:50AM May 17, 2018Observed: 18.66 ft at 11:00AM May 17, 2018Observed: 18.8 ft at 11:10AM May 17, 2018Observed: 18.84 ft at 11:20AM May 17, 2018Observed: 18.8 ft at 11:30AM May 17, 2018Observed: 18.82 ft at 11:40AM May 17, 2018Observed: 18.81 ft at 11:50AM May 17, 2018Observed: 18.8 ft at 12:00PM May 17, 2018Observed: 18.81 ft at 12:10PM May 17, 2018Observed: 18.81 ft at 12:20PM May 17, 2018Observed: 18.79 ft at 12:30PM May 17, 2018Observed: 18.82 ft at 12:40PM May 17, 2018Observed: 18.8 ft at 12:50PM May 17, 2018Observed: 18.79 ft at 1:00PM May 17, 2018Observed: 18.81 ft at 1:10PM May 17, 2018Observed: 18.79 ft at 1:20PM May 17, 2018Observed: 18.8 ft at 1:30PM May 17, 2018Observed: 18.79 ft at 1:40PM May 17, 2018Observed: 18.8 ft at 1:50PM May 17, 2018Observed: 18.83 ft at 2:00PM May 17, 2018Observed: 18.81 ft at 2:10PM May 17, 2018Observed: 18.81 ft at 2:20PM May 17, 2018Observed: 18.8 ft at 2:30PM May 17, 2018Observed: 18.79 ft at 2:40PM May 17, 2018Observed: 18.78 ft at 2:50PM May 17, 2018Observed: 18.83 ft at 3:00PM May 17, 2018Observed: 18.8 ft at 3:10PM May 17, 2018Observed: 18.82 ft at 3:20PM May 17, 2018Observed: 18.8 ft at 3:30PM May 17, 2018Observed: 18.79 ft at 3:40PM May 17, 2018Observed: 18.79 ft at 3:50PM May 17, 2018Observed: 18.8 ft at 4:00PM May 17, 2018Observed: 18.82 ft at 4:10PM May 17, 2018Observed: 18.83 ft at 4:20PM May 17, 2018Observed: 18.82 ft at 4:30PM May 17, 2018Observed: 18.77 ft at 4:40PM May 17, 2018Observed: 18.79 ft at 4:50PM May 17, 2018Observed: 18.81 ft at 5:00PM May 17, 2018Observed: 18.79 ft at 5:10PM May 17, 2018Observed: 18.8 ft at 5:20PM May 17, 2018Observed: 18.83 ft at 5:30PM May 17, 2018Observed: 18.82 ft at 5:40PM May 17, 2018Observed: 18.78 ft at 5:50PM May 17, 2018Observed: 18.79 ft at 6:00PM May 17, 2018Observed: 18.8 ft at 6:10PM May 17, 2018Observed: 18.78 ft at 6:20PM May 17, 2018Observed: 18.78 ft at 6:30PM May 17, 2018Observed: 18.79 ft at 6:40PM May 17, 2018Observed: 18.82 ft at 6:50PM May 17, 2018Observed: 18.76 ft at 7:00PM May 17, 2018Observed: 18.77 ft at 7:10PM May 17, 2018Observed: 18.81 ft at 7:20PM May 17, 2018Observed: 18.81 ft at 7:30PM May 17, 2018Observed: 18.78 ft at 7:40PM May 17, 2018Observed: 18.8 ft at 7:50PM May 17, 2018Highest Observation: 18.91 ft at 8:00PM May 17, 2018Observed: 18.8 ft at 8:10PM May 17, 2018Observed: 18.79 ft at 8:20PM May 17, 2018Observed: 18.78 ft at 8:30PM May 17, 2018Observed: 18.75 ft at 8:40PM May 17, 2018Observed: 18.76 ft at 8:50PM May 17, 2018Observed: 18.76 ft at 9:00PM May 17, 2018Observed: 18.78 ft at 9:10PM May 17, 2018Observed: 18.78 ft at 9:20PM May 17, 2018Observed: 18.78 ft at 9:30PM May 17, 2018Observed: 18.77 ft at 9:40PM May 17, 2018Observed: 18.77 ft at 9:50PM May 17, 2018Observed: 18.79 ft at 10:00PM May 17, 2018Observed: 18.77 ft at 10:10PM May 17, 2018Observed: 18.76 ft at 10:20PM May 17, 2018Observed: 18.77 ft at 10:30PM May 17, 2018Observed: 18.79 ft at 10:40PM May 17, 2018Observed: 18.79 ft at 10:50PM May 17, 2018Observed: 18.79 ft at 11:00PM May 17, 2018Observed: 18.76 ft at 11:10PM May 17, 2018Observed: 18.76 ft at 11:20PM May 17, 2018Observed: 18.76 ft at 11:30PM May 17, 2018Observed: 18.76 ft at 11:40PM May 17, 2018Observed: 18.85 ft at 11:50PM May 17, 2018Observed: 18.78 ft at 12:00AM May 18, 2018Observed: 18.77 ft at 12:10AM May 18, 2018Observed: 18.75 ft at 12:20AM May 18, 2018Observed: 18.75 ft at 12:30AM May 18, 2018Observed: 18.76 ft at 12:40AM May 18, 2018Observed: 18.81 ft at 12:50AM May 18, 2018Observed: 18.74 ft at 1:00AM May 18, 2018Observed: 18.76 ft at 1:10AM May 18, 2018Observed: 18.75 ft at 1:20AM May 18, 2018Observed: 18.75 ft at 1:30AM May 18, 2018Observed: 18.74 ft at 1:40AM May 18, 2018Observed: 18.75 ft at 1:50AM May 18, 2018Observed: 18.75 ft at 2:00AM May 18, 2018Observed: 18.73 ft at 2:10AM May 18, 2018Observed: 18.78 ft at 2:20AM May 18, 2018Observed: 18.74 ft at 2:30AM May 18, 2018Observed: 18.75 ft at 2:40AM May 18, 2018Observed: 18.75 ft at 2:50AM May 18, 2018Observed: 18.73 ft at 3:00AM May 18, 2018Observed: 18.73 ft at 3:10AM May 18, 2018Observed: 18.74 ft at 3:20AM May 18, 2018Observed: 18.74 ft at 3:30AM May 18, 2018Observed: 18.74 ft at 3:40AM May 18, 2018Observed: 18.71 ft at 3:50AM May 18, 2018Observed: 18.75 ft at 4:00AM May 18, 2018Observed: 18.73 ft at 4:10AM May 18, 2018Observed: 18.7 ft at 4:20AM May 18, 2018Observed: 18.72 ft at 4:30AM May 18, 2018Observed: 18.69 ft at 4:40AM May 18, 2018Observed: 18.74 ft at 4:50AM May 18, 2018Observed: 18.73 ft at 5:00AM May 18, 2018Observed: 18.73 ft at 5:10AM May 18, 2018Observed: 18.73 ft at 5:20AM May 18, 2018Observed: 18.71 ft at 5:30AM May 18, 2018Observed: 18.71 ft at 5:40AM May 18, 2018Observed: 18.72 ft at 5:50AM May 18, 2018Observed: 18.75 ft at 6:00AM May 18, 2018Observed: 18.7 ft at 6:10AM May 18, 2018Observed: 18.73 ft at 6:20AM May 18, 2018Observed: 18.72 ft at 6:30AM May 18, 2018Observed: 18.69 ft at 6:40AM May 18, 2018Observed: 18.69 ft at 6:50AM May 18, 2018Observed: 18.7 ft at 7:00AM May 18, 2018Observed: 18.71 ft at 7:10AM May 18, 2018Observed: 18.71 ft at 7:20AM May 18, 2018Observed: 18.72 ft at 7:30AM May 18, 2018Observed: 18.7 ft at 7:40AM May 18, 2018Observed: 18.73 ft at 7:50AM May 18, 2018Observed: 18.69 ft at 8:00AM May 18, 2018Observed: 18.69 ft at 8:10AM May 18, 2018Observed: 18.72 ft at 8:20AM May 18, 2018Observed: 18.68 ft at 8:30AM May 18, 2018Observed: 18.71 ft at 8:40AM May 18, 2018Observed: 18.73 ft at 8:50AM May 18, 2018Observed: 18.7 ft at 9:00AM May 18, 2018Observed: 18.69 ft at 9:10AM May 18, 2018Observed: 18.67 ft at 9:20AM May 18, 2018Observed: 18.69 ft at 9:30AM May 18, 2018Observed: 18.69 ft at 9:40AM May 18, 2018Observed: 18.7 ft at 9:50AM May 18, 2018Observed: 18.69 ft at 10:00AM May 18, 2018Observed: 18.68 ft at 10:10AM May 18, 2018Observed: 18.65 ft at 10:20AM May 18, 2018Observed: 18.68 ft at 10:30AM May 18, 2018Observed: 18.67 ft at 10:40AM May 18, 2018Observed: 18.67 ft at 10:50AM May 18, 2018Observed: 18.68 ft at 11:00AM May 18, 2018Observed: 18.69 ft at 11:10AM May 18, 2018Observed: 18.67 ft at 11:20AM May 18, 2018Observed: 18.65 ft at 11:30AM May 18, 2018Observed: 18.65 ft at 11:40AM May 18, 2018Observed: 18.65 ft at 11:50AM May 18, 2018Observed: 18.65 ft at 12:00PM May 18, 2018Observed: 18.68 ft at 12:10PM May 18, 2018Observed: 18.67 ft at 12:20PM May 18, 2018Observed: 18.68 ft at 12:30PM May 18, 2018Observed: 18.65 ft at 12:40PM May 18, 2018Observed: 18.62 ft at 12:50PM May 18, 2018Observed: 18.63 ft at 1:00PM May 18, 2018Observed: 18.64 ft at 1:10PM May 18, 2018Observed: 18.65 ft at 1:20PM May 18, 2018Observed: 18.64 ft at 1:30PM May 18, 2018Observed: 18.64 ft at 1:40PM May 18, 2018Observed: 18.62 ft at 1:50PM May 18, 2018Observed: 18.62 ft at 2:00PM May 18, 2018Observed: 18.62 ft at 2:10PM May 18, 2018Observed: 18.63 ft at 2:20PM May 18, 2018Observed: 18.63 ft at 2:30PM May 18, 2018Observed: 18.63 ft at 2:40PM May 18, 2018Observed: 18.63 ft at 2:50PM May 18, 2018Observed: 18.62 ft at 3:00PM May 18, 2018Observed: 18.62 ft at 3:10PM May 18, 2018Observed: 18.62 ft at 3:20PM May 18, 2018Observed: 18.62 ft at 3:30PM May 18, 2018Observed: 18.61 ft at 3:40PM May 18, 2018Observed: 18.62 ft at 3:50PM May 18, 2018Observed: 18.62 ft at 4:00PM May 18, 2018Observed: 18.61 ft at 4:10PM May 18, 2018Observed: 18.63 ft at 4:20PM May 18, 2018Observed: 18.6 ft at 4:30PM May 18, 2018Observed: 18.62 ft at 4:40PM May 18, 2018Observed: 18.6 ft at 4:50PM May 18, 2018Observed: 18.62 ft at 5:00PM May 18, 2018Observed: 18.62 ft at 5:10PM May 18, 2018Observed: 18.6 ft at 5:20PM May 18, 2018Observed: 18.59 ft at 5:30PM May 18, 2018Observed: 18.6 ft at 5:40PM May 18, 2018Observed: 18.58 ft at 5:50PM May 18, 2018Observed: 18.58 ft at 6:00PM May 18, 2018Observed: 18.6 ft at 6:10PM May 18, 2018Observed: 18.6 ft at 6:20PM May 18, 2018Observed: 18.6 ft at 6:30PM May 18, 2018Observed: 18.61 ft at 6:40PM May 18, 2018Observed: 18.58 ft at 6:50PM May 18, 2018Observed: 18.58 ft at 7:00PM May 18, 2018Observed: 18.52 ft at 7:10PM May 18, 2018Observed: 18.59 ft at 7:20PM May 18, 2018Observed: 18.59 ft at 7:30PM May 18, 2018Observed: 18.59 ft at 7:40PM May 18, 2018Observed: 18.55 ft at 7:50PM May 18, 2018Observed: 18.57 ft at 8:00PM May 18, 2018Observed: 18.57 ft at 8:10PM May 18, 2018Observed: 18.59 ft at 8:20PM May 18, 2018Observed: 18.57 ft at 8:30PM May 18, 2018Observed: 18.59 ft at 8:40PM May 18, 2018Observed: 18.55 ft at 8:50PM May 18, 2018Observed: 18.57 ft at 9:00PM May 18, 2018Observed: 18.55 ft at 9:10PM May 18, 2018Observed: 18.55 ft at 9:20PM May 18, 2018Observed: 18.57 ft at 9:30PM May 18, 2018Observed: 18.54 ft at 9:40PM May 18, 2018Observed: 18.55 ft at 9:50PM May 18, 2018Observed: 18.55 ft at 10:00PM May 18, 2018Observed: 18.55 ft at 10:10PM May 18, 2018Observed: 18.53 ft at 10:20PM May 18, 2018Observed: 18.56 ft at 10:30PM May 18, 2018Observed: 18.58 ft at 10:40PM May 18, 2018Observed: 18.54 ft at 10:50PM May 18, 2018Observed: 18.54 ft at 11:00PM May 18, 2018Observed: 18.52 ft at 11:10PM May 18, 2018Observed: 18.51 ft at 11:20PM May 18, 2018Observed: 18.53 ft at 11:30PM May 18, 2018Observed: 18.56 ft at 11:40PM May 18, 2018Observed: 18.53 ft at 11:50PM May 18, 2018Observed: 18.54 ft at 12:00AM May 19, 2018Observed: 18.52 ft at 12:10AM May 19, 2018Observed: 18.5 ft at 12:20AM May 19, 2018Observed: 18.51 ft at 12:30AM May 19, 2018Observed: 18.5 ft at 12:40AM May 19, 2018Observed: 18.51 ft at 12:50AM May 19, 2018Observed: 18.51 ft at 1:00AM May 19, 2018Observed: 18.51 ft at 1:10AM May 19, 2018Observed: 18.5 ft at 1:20AM May 19, 2018Observed: 18.51 ft at 1:30AM May 19, 2018Observed: 18.49 ft at 1:40AM May 19, 2018Observed: 18.47 ft at 1:50AM May 19, 2018Observed: 18.49 ft at 2:00AM May 19, 2018Observed: 18.49 ft at 2:10AM May 19, 2018Observed: 18.49 ft at 2:20AM May 19, 2018Observed: 18.5 ft at 2:30AM May 19, 2018Observed: 18.49 ft at 2:40AM May 19, 2018Observed: 18.48 ft at 2:50AM May 19, 2018Observed: 18.48 ft at 3:00AM May 19, 2018Observed: 18.46 ft at 3:10AM May 19, 2018Observed: 18.48 ft at 3:20AM May 19, 2018Observed: 18.47 ft at 3:30AM May 19, 2018Observed: 18.49 ft at 3:40AM May 19, 2018Observed: 18.46 ft at 3:50AM May 19, 2018Observed: 18.46 ft at 4:00AM May 19, 2018Observed: 18.45 ft at 4:10AM May 19, 2018Observed: 18.47 ft at 4:20AM May 19, 2018Observed: 18.45 ft at 4:30AM May 19, 2018Observed: 18.47 ft at 4:40AM May 19, 2018Observed: 18.46 ft at 4:50AM May 19, 2018Observed: 18.45 ft at 5:00AM May 19, 2018Observed: 18.45 ft at 5:10AM May 19, 2018Observed: 18.45 ft at 5:20AM May 19, 2018Observed: 18.44 ft at 5:30AM May 19, 2018Observed: 18.45 ft at 5:40AM May 19, 2018Observed: 18.45 ft at 5:50AM May 19, 2018Observed: 18.43 ft at 6:00AM May 19, 2018Observed: 18.45 ft at 6:10AM May 19, 2018Observed: 18.44 ft at 6:20AM May 19, 2018Observed: 18.42 ft at 6:30AM May 19, 2018Observed: 18.42 ft at 6:40AM May 19, 2018Observed: 18.44 ft at 6:50AM May 19, 2018Observed: 18.43 ft at 7:00AM May 19, 2018Observed: 18.44 ft at 7:10AM May 19, 2018Observed: 18.42 ft at 7:20AM May 19, 2018Observed: 18.42 ft at 7:30AM May 19, 2018Observed: 18.42 ft at 7:40AM May 19, 2018Observed: 18.41 ft at 7:50AM May 19, 2018Observed: 18.41 ft at 8:00AM May 19, 2018Observed: 18.42 ft at 8:10AM May 19, 2018Observed: 18.41 ft at 8:20AM May 19, 2018Observed: 18.4 ft at 8:30AM May 19, 2018Observed: 18.43 ft at 8:40AM May 19, 2018Observed: 18.41 ft at 8:50AM May 19, 2018Observed: 18.4 ft at 9:00AM May 19, 2018Observed: 18.39 ft at 9:10AM May 19, 2018Observed: 18.41 ft at 9:20AM May 19, 2018Observed: 18.39 ft at 9:30AM May 19, 2018Observed: 18.41 ft at 9:40AM May 19, 2018Observed: 18.39 ft at 9:50AM May 19, 2018Observed: 18.38 ft at 10:00AM May 19, 2018Observed: 18.41 ft at 10:10AM May 19, 2018Observed: 18.39 ft at 10:20AM May 19, 2018Observed: 18.4 ft at 10:30AM May 19, 2018Observed: 18.41 ft at 10:40AM May 19, 2018Observed: 18.41 ft at 10:50AM May 19, 2018Observed: 18.38 ft at 11:00AM May 19, 2018Observed: 18.38 ft at 11:10AM May 19, 2018Observed: 18.39 ft at 11:20AM May 19, 2018Observed: 18.39 ft at 11:30AM May 19, 2018Observed: 18.4 ft at 11:40AM May 19, 2018Observed: 18.35 ft at 11:50AM May 19, 2018Observed: 18.36 ft at 12:00PM May 19, 2018Observed: 18.32 ft at 12:10PM May 19, 2018Observed: 18.36 ft at 12:20PM May 19, 2018Observed: 18.38 ft at 12:30PM May 19, 2018Observed: 18.38 ft at 12:40PM May 19, 2018Observed: 18.38 ft at 12:50PM May 19, 2018Observed: 18.37 ft at 1:00PM May 19, 2018Observed: 18.35 ft at 1:10PM May 19, 2018Observed: 18.34 ft at 1:20PM May 19, 2018Observed: 18.38 ft at 1:30PM May 19, 2018Observed: 18.36 ft at 1:40PM May 19, 2018Observed: 18.36 ft at 1:50PM May 19, 2018Observed: 18.36 ft at 2:00PM May 19, 2018Observed: 18.35 ft at 2:10PM May 19, 2018Observed: 18.32 ft at 2:20PM May 19, 2018Observed: 18.32 ft at 2:30PM May 19, 2018Observed: 18.32 ft at 2:40PM May 19, 2018Observed: 18.32 ft at 2:50PM May 19, 2018Observed: 18.32 ft at 3:00PM May 19, 2018Observed: 18.33 ft at 3:10PM May 19, 2018Observed: 18.33 ft at 3:20PM May 19, 2018Observed: 18.33 ft at 3:30PM May 19, 2018Observed: 18.32 ft at 3:40PM May 19, 2018Observed: 18.3 ft at 3:50PM May 19, 2018Observed: 18.34 ft at 4:00PM May 19, 2018Observed: 18.32 ft at 4:10PM May 19, 2018Observed: 18.35 ft at 4:20PM May 19, 2018Observed: 18.33 ft at 4:30PM May 19, 2018Observed: 18.29 ft at 4:40PM May 19, 2018Observed: 18.3 ft at 4:50PM May 19, 2018Observed: 18.27 ft at 5:00PM May 19, 2018Observed: 18.3 ft at 5:10PM May 19, 2018Observed: 18.28 ft at 5:20PM May 19, 2018Observed: 18.3 ft at 5:30PM May 19, 2018Observed: 18.29 ft at 5:40PM May 19, 2018Observed: 18.3 ft at 5:50PM May 19, 2018Observed: 18.28 ft at 6:00PM May 19, 2018Observed: 18.26 ft at 6:10PM May 19, 2018Observed: 18.27 ft at 6:20PM May 19, 2018Observed: 18.27 ft at 6:30PM May 19, 2018Observed: 18.26 ft at 6:40PM May 19, 2018Observed: 18.27 ft at 6:50PM May 19, 2018Observed: 18.27 ft at 7:00PM May 19, 2018Observed: 18.28 ft at 7:10PM May 19, 2018Observed: 18.25 ft at 7:20PM May 19, 2018Observed: 18.26 ft at 7:30PM May 19, 2018Observed: 18.26 ft at 7:40PM May 19, 2018Observed: 18.27 ft at 7:50PM May 19, 2018Observed: 18.24 ft at 8:00PM May 19, 2018Observed: 18.23 ft at 8:10PM May 19, 2018Observed: 18.26 ft at 8:20PM May 19, 2018Observed: 18.23 ft at 8:30PM May 19, 2018Observed: 18.23 ft at 8:40PM May 19, 2018Observed: 18.23 ft at 8:50PM May 19, 2018Observed: 18.23 ft at 9:00PM May 19, 2018Observed: 18.22 ft at 9:10PM May 19, 2018Observed: 18.21 ft at 9:20PM May 19, 2018Observed: 18.22 ft at 9:30PM May 19, 2018Observed: 18.21 ft at 9:40PM May 19, 2018Observed: 18.21 ft at 9:50PM May 19, 2018Observed: 18.22 ft at 10:00PM May 19, 2018Observed: 18.21 ft at 10:10PM May 19, 2018Observed: 18.2 ft at 10:20PM May 19, 2018Observed: 18.22 ft at 10:30PM May 19, 2018Observed: 18.2 ft at 10:40PM May 19, 2018Observed: 18.19 ft at 10:50PM May 19, 2018Observed: 18.18 ft at 11:00PM May 19, 2018Observed: 18.19 ft at 11:10PM May 19, 2018Observed: 18.18 ft at 11:20PM May 19, 2018Observed: 18.17 ft at 11:30PM May 19, 2018Observed: 18.2 ft at 11:40PM May 19, 2018Observed: 18.16 ft at 11:50PM May 19, 2018Observed: 18.18 ft at 12:00AM May 20, 2018Observed: 18.17 ft at 12:10AM May 20, 2018Observed: 18.18 ft at 12:20AM May 20, 2018Observed: 18.16 ft at 12:30AM May 20, 2018Observed: 18.16 ft at 12:40AM May 20, 2018Observed: 18.12 ft at 12:50AM May 20, 2018Observed: 18.16 ft at 1:00AM May 20, 2018Observed: 18.18 ft at 1:10AM May 20, 2018Observed: 18.16 ft at 1:20AM May 20, 2018Observed: 18.15 ft at 1:30AM May 20, 2018Observed: 18.13 ft at 1:40AM May 20, 2018Observed: 18.13 ft at 1:50AM May 20, 2018Observed: 18.14 ft at 2:00AM May 20, 2018Observed: 18.14 ft at 2:10AM May 20, 2018Observed: 18.12 ft at 2:20AM May 20, 2018Observed: 18.09 ft at 2:30AM May 20, 2018Observed: 18.1 ft at 2:40AM May 20, 2018Observed: 18.11 ft at 2:50AM May 20, 2018Observed: 18.11 ft at 3:00AM May 20, 2018Observed: 18.11 ft at 3:10AM May 20, 2018Observed: 18.09 ft at 3:20AM May 20, 2018Observed: 18.1 ft at 3:30AM May 20, 2018Observed: 18.09 ft at 3:40AM May 20, 2018Observed: 18.1 ft at 3:50AM May 20, 2018Observed: 18.09 ft at 4:00AM May 20, 2018Observed: 18.08 ft at 4:10AM May 20, 2018Observed: 18.08 ft at 4:20AM May 20, 2018Observed: 18.1 ft at 4:30AM May 20, 2018Observed: 18.06 ft at 4:40AM May 20, 2018Observed: 18.08 ft at 4:50AM May 20, 2018Observed: 18.08 ft at 5:00AM May 20, 2018Observed: 18.07 ft at 5:10AM May 20, 2018Observed: 18.05 ft at 5:20AM May 20, 2018Observed: 17.98 ft at 5:30AM May 20, 2018Observed: 18.05 ft at 5:40AM May 20, 2018Observed: 18.05 ft at 5:50AM May 20, 2018Observed: 18.07 ft at 6:00AM May 20, 2018Observed: 18.05 ft at 6:10AM May 20, 2018Observed: 18.05 ft at 6:20AM May 20, 2018Observed: 18.03 ft at 6:30AM May 20, 2018Observed: 18.04 ft at 6:40AM May 20, 2018Observed: 18.04 ft at 6:50AM May 20, 2018Observed: 18.03 ft at 7:00AM May 20, 2018Observed: 18.02 ft at 7:10AM May 20, 2018Observed: 17.95 ft at 7:20AM May 20, 2018Observed: 18.02 ft at 7:30AM May 20, 2018Observed: 18.02 ft at 7:40AM May 20, 2018Observed: 18.03 ft at 7:50AM May 20, 2018Observed: 18.06 ft at 8:00AM May 20, 2018Observed: 18.02 ft at 8:10AM May 20, 2018Observed: 18.03 ft at 8:20AM May 20, 2018Observed: 18.02 ft at 8:30AM May 20, 2018Observed: 18.01 ft at 8:40AM May 20, 2018Observed: 18.02 ft at 8:50AM May 20, 2018Observed: 17.98 ft at 9:00AM May 20, 2018Observed: 18.01 ft at 9:10AM May 20, 2018Observed: 18 ft at 9:20AM May 20, 2018Observed: 18 ft at 9:30AM May 20, 2018Observed: 18.03 ft at 9:40AM May 20, 2018Observed: 17.99 ft at 9:50AM May 20, 2018Observed: 18.01 ft at 10:00AM May 20, 2018Observed: 17.96 ft at 10:10AM May 20, 2018Observed: 17.95 ft at 10:20AM May 20, 2018Observed: 17.96 ft at 10:30AM May 20, 2018Observed: 18.02 ft at 10:40AM May 20, 2018Observed: 17.98 ft at 10:50AM May 20, 2018Observed: 18.01 ft at 11:00AM May 20, 2018Observed: 18 ft at 11:10AM May 20, 2018Observed: 17.96 ft at 11:20AM May 20, 2018Observed: 17.96 ft at 11:30AM May 20, 2018Observed: 17.98 ft at 11:40AM May 20, 2018Observed: 17.98 ft at 11:50AM May 20, 2018Observed: 17.95 ft at 12:00PM May 20, 2018Observed: 17.99 ft at 12:10PM May 20, 2018Observed: 17.98 ft at 12:20PM May 20, 2018Observed: 17.91 ft at 12:30PM May 20, 2018Observed: 17.94 ft at 12:40PM May 20, 2018Observed: 17.95 ft at 12:50PM May 20, 2018Observed: 17.95 ft at 1:00PM May 20, 2018Observed: 17.93 ft at 1:10PM May 20, 2018Observed: 17.94 ft at 1:20PM May 20, 2018Observed: 17.94 ft at 1:30PM May 20, 2018Observed: 17.94 ft at 1:40PM May 20, 2018Observed: 17.95 ft at 1:50PM May 20, 2018Observed: 17.95 ft at 2:00PM May 20, 2018Observed: 17.95 ft at 2:10PM May 20, 2018Observed: 17.92 ft at 2:20PM May 20, 2018Observed: 17.94 ft at 2:30PM May 20, 2018Observed: 17.91 ft at 2:40PM May 20, 2018Observed: 17.93 ft at 2:50PM May 20, 2018Observed: 17.91 ft at 3:00PM May 20, 2018Observed: 17.9 ft at 3:10PM May 20, 2018Observed: 17.91 ft at 3:20PM May 20, 2018Observed: 17.91 ft at 3:30PM May 20, 2018Observed: 17.9 ft at 3:40PM May 20, 2018Observed: 17.9 ft at 3:50PM May 20, 2018Observed: 17.88 ft at 4:00PM May 20, 2018Observed: 17.88 ft at 4:10PM May 20, 2018Observed: 17.91 ft at 4:20PM May 20, 2018Observed: 17.9 ft at 4:30PM May 20, 2018Observed: 17.9 ft at 4:40PM May 20, 2018Observed: 17.87 ft at 4:50PM May 20, 2018Observed: 17.87 ft at 5:00PM May 20, 2018Observed: 17.87 ft at 5:10PM May 20, 2018Observed: 17.87 ft at 5:20PM May 20, 2018Observed: 17.88 ft at 5:30PM May 20, 2018Observed: 17.88 ft at 5:40PM May 20, 2018Observed: 17.88 ft at 5:50PM May 20, 2018Observed: 17.86 ft at 6:00PM May 20, 2018Observed: 17.85 ft at 6:10PM May 20, 2018Observed: 17.86 ft at 6:20PM May 20, 2018Observed: 17.85 ft at 6:30PM May 20, 2018Observed: 17.82 ft at 6:40PM May 20, 2018Observed: 17.84 ft at 6:50PM May 20, 2018Observed: 17.84 ft at 7:00PM May 20, 2018Observed: 17.84 ft at 7:10PM May 20, 2018Observed: 17.85 ft at 7:20PM May 20, 2018Observed: 17.84 ft at 7:30PM May 20, 2018Observed: 17.82 ft at 7:40PM May 20, 2018Observed: 17.83 ft at 7:50PM May 20, 2018Observed: 17.84 ft at 8:00PM May 20, 2018Observed: 17.82 ft at 8:10PM May 20, 2018Observed: 17.84 ft at 8:20PM May 20, 2018Observed: 17.82 ft at 8:30PM May 20, 2018Observed: 17.83 ft at 8:40PM May 20, 2018Observed: 17.79 ft at 8:50PM May 20, 2018Observed: 17.79 ft at 9:00PM May 20, 2018Observed: 17.8 ft at 9:10PM May 20, 2018Observed: 17.82 ft at 9:20PM May 20, 2018Observed: 17.78 ft at 9:30PM May 20, 2018Observed: 17.79 ft at 9:40PM May 20, 2018Observed: 17.77 ft at 9:50PM May 20, 2018Observed: 17.78 ft at 10:00PM May 20, 2018Observed: 17.78 ft at 10:10PM May 20, 2018Observed: 17.77 ft at 10:20PM May 20, 2018Observed: 17.77 ft at 10:30PM May 20, 2018Observed: 17.77 ft at 10:40PM May 20, 2018Observed: 17.76 ft at 10:50PM May 20, 2018Observed: 17.76 ft at 11:00PM May 20, 2018Observed: 17.75 ft at 11:10PM May 20, 2018Observed: 17.76 ft at 11:20PM May 20, 2018Observed: 17.76 ft at 11:30PM May 20, 2018Observed: 17.77 ft at 11:40PM May 20, 2018Observed: 17.76 ft at 11:50PM May 20, 2018Observed: 17.75 ft at 12:00AM May 21, 2018Observed: 17.75 ft at 12:10AM May 21, 2018Observed: 17.73 ft at 12:20AM May 21, 2018Observed: 17.74 ft at 12:30AM May 21, 2018Observed: 17.75 ft at 12:40AM May 21, 2018Observed: 17.74 ft at 12:50AM May 21, 2018Observed: 17.72 ft at 1:00AM May 21, 2018Observed: 17.76 ft at 1:10AM May 21, 2018Observed: 17.74 ft at 1:20AM May 21, 2018Observed: 17.72 ft at 1:30AM May 21, 2018Observed: 17.73 ft at 1:40AM May 21, 2018Observed: 17.72 ft at 1:50AM May 21, 2018Observed: 17.77 ft at 2:00AM May 21, 2018Observed: 17.73 ft at 2:10AM May 21, 2018Observed: 17.7 ft at 2:20AM May 21, 2018Observed: 17.71 ft at 2:30AM May 21, 2018Observed: 17.69 ft at 2:40AM May 21, 2018Observed: 17.66 ft at 2:50AM May 21, 2018Observed: 17.7 ft at 3:00AM May 21, 2018Observed: 17.7 ft at 3:10AM May 21, 2018Observed: 17.68 ft at 3:20AM May 21, 2018Observed: 17.69 ft at 3:30AM May 21, 2018Observed: 17.68 ft at 3:40AM May 21, 2018Observed: 17.64 ft at 3:50AM May 21, 2018Observed: 17.67 ft at 4:00AM May 21, 2018Observed: 17.68 ft at 4:10AM May 21, 2018Observed: 17.66 ft at 4:20AM May 21, 2018Observed: 17.67 ft at 4:30AM May 21, 2018Observed: 17.64 ft at 4:40AM May 21, 2018Observed: 17.62 ft at 4:50AM May 21, 2018Observed: 17.65 ft at 5:00AM May 21, 2018Observed: 17.66 ft at 5:10AM May 21, 2018Observed: 17.65 ft at 5:20AM May 21, 2018Observed: 17.63 ft at 5:30AM May 21, 2018Observed: 17.64 ft at 5:40AM May 21, 2018Observed: 17.62 ft at 5:50AM May 21, 2018Observed: 17.62 ft at 6:00AM May 21, 2018Observed: 17.65 ft at 6:10AM May 21, 2018Observed: 17.64 ft at 6:20AM May 21, 2018Observed: 17.61 ft at 6:30AM May 21, 2018Observed: 17.62 ft at 6:40AM May 21, 2018Observed: 17.62 ft at 6:50AM May 21, 2018Observed: 17.61 ft at 7:00AM May 21, 2018Observed: 17.61 ft at 7:10AM May 21, 2018Observed: 17.63 ft at 7:20AM May 21, 2018Observed: 17.62 ft at 7:30AM May 21, 2018Observed: 17.59 ft at 7:40AM May 21, 2018Observed: 17.62 ft at 7:50AM May 21, 2018Observed: 17.6 ft at 8:00AM May 21, 2018Observed: 17.58 ft at 8:10AM May 21, 2018Observed: 17.58 ft at 8:20AM May 21, 2018Observed: 17.58 ft at 8:30AM May 21, 2018Observed: 17.57 ft at 8:40AM May 21, 2018Observed: 17.58 ft at 8:50AM May 21, 2018Observed: 17.58 ft at 9:00AM May 21, 2018Observed: 17.57 ft at 9:10AM May 21, 2018Observed: 17.56 ft at 9:20AM May 21, 2018Observed: 17.56 ft at 9:30AM May 21, 2018Observed: 17.57 ft at 9:40AM May 21, 2018Observed: 17.54 ft at 9:50AM May 21, 2018Observed: 17.53 ft at 10:00AM May 21, 2018Observed: 17.54 ft at 10:10AM May 21, 2018Observed: 17.55 ft at 10:20AM May 21, 2018Observed: 17.53 ft at 10:30AM May 21, 2018Observed: 17.53 ft at 10:40AM May 21, 2018Observed: 17.54 ft at 10:50AM May 21, 2018Observed: 17.52 ft at 11:00AM May 21, 2018Observed: 17.53 ft at 11:10AM May 21, 2018Observed: 17.52 ft at 11:20AM May 21, 2018Observed: 17.52 ft at 11:30AM May 21, 2018Observed: 17.52 ft at 11:40AM May 21, 2018Observed: 17.53 ft at 11:50AM May 21, 2018Observed: 17.51 ft at 12:00PM May 21, 2018Observed: 17.51 ft at 12:10PM May 21, 2018Observed: 17.52 ft at 12:20PM May 21, 2018Observed: 17.5 ft at 12:30PM May 21, 2018Observed: 17.51 ft at 12:40PM May 21, 2018Observed: 17.46 ft at 12:50PM May 21, 2018Observed: 17.48 ft at 1:00PM May 21, 2018Observed: 17.49 ft at 1:10PM May 21, 2018Observed: 17.49 ft at 1:20PM May 21, 2018Observed: 17.49 ft at 1:30PM May 21, 2018Observed: 17.48 ft at 1:40PM May 21, 2018Observed: 17.48 ft at 1:50PM May 21, 2018Observed: 17.48 ft at 2:00PM May 21, 2018Observed: 17.49 ft at 2:10PM May 21, 2018Observed: 17.49 ft at 2:20PM May 21, 2018Observed: 17.48 ft at 2:30PM May 21, 2018Observed: 17.47 ft at 2:40PM May 21, 2018Observed: 17.48 ft at 2:50PM May 21, 2018Observed: 17.49 ft at 3:00PM May 21, 2018Observed: 17.44 ft at 3:10PM May 21, 2018Observed: 17.45 ft at 3:20PM May 21, 2018Observed: 17.47 ft at 3:30PM May 21, 2018Observed: 17.48 ft at 3:40PM May 21, 2018Observed: 17.44 ft at 3:50PM May 21, 2018Observed: 17.41 ft at 4:00PM May 21, 2018Observed: 17.47 ft at 4:10PM May 21, 2018Observed: 17.43 ft at 4:20PM May 21, 2018Observed: 17.43 ft at 4:30PM May 21, 2018Observed: 17.45 ft at 4:40PM May 21, 2018Observed: 17.42 ft at 4:50PM May 21, 2018Observed: 17.42 ft at 5:00PM May 21, 2018Observed: 17.43 ft at 5:10PM May 21, 2018Observed: 17.41 ft at 5:20PM May 21, 2018Observed: 17.42 ft at 5:30PM May 21, 2018Observed: 17.39 ft at 5:40PM May 21, 2018Observed: 17.4 ft at 5:50PM May 21, 2018Observed: 17.41 ft at 6:00PM May 21, 2018Observed: 17.39 ft at 6:10PM May 21, 2018Observed: 17.4 ft at 6:20PM May 21, 2018Observed: 17.39 ft at 6:30PM May 21, 2018Observed: 17.39 ft at 6:40PM May 21, 2018Observed: 17.39 ft at 6:50PM May 21, 2018Observed: 17.39 ft at 7:00PM May 21, 2018Observed: 17.37 ft at 7:10PM May 21, 2018Observed: 17.37 ft at 7:20PM May 21, 2018Observed: 17.38 ft at 7:30PM May 21, 2018Observed: 17.35 ft at 7:40PM May 21, 2018Observed: 17.37 ft at 7:50PM May 21, 2018Observed: 17.36 ft at 8:00PM May 21, 2018Observed: 17.35 ft at 8:10PM May 21, 2018Observed: 17.36 ft at 8:20PM May 21, 2018Observed: 17.35 ft at 8:30PM May 21, 2018Observed: 17.34 ft at 8:40PM May 21, 2018Observed: 17.35 ft at 8:50PM May 21, 2018Observed: 17.31 ft at 9:00PM May 21, 2018Observed: 17.32 ft at 9:10PM May 21, 2018Observed: 17.33 ft at 9:20PM May 21, 2018Observed: 17.34 ft at 9:30PM May 21, 2018Observed: 17.31 ft at 9:40PM May 21, 2018Observed: 17.3 ft at 9:50PM May 21, 2018Observed: 17.3 ft at 10:00PM May 21, 2018Observed: 17.28 ft at 10:10PM May 21, 2018Observed: 17.35 ft at 10:20PM May 21, 2018Observed: 17.31 ft at 10:30PM May 21, 2018Observed: 17.32 ft at 10:40PM May 21, 2018Observed: 17.32 ft at 10:50PM May 21, 2018Observed: 17.29 ft at 11:00PM May 21, 2018Observed: 17.3 ft at 11:10PM May 21, 2018Observed: 17.27 ft at 11:20PM May 21, 2018Observed: 17.27 ft at 11:30PM May 21, 2018Observed: 17.26 ft at 11:40PM May 21, 2018Observed: 17.26 ft at 11:50PM May 21, 2018Observed: 17.27 ft at 12:00AM May 22, 2018Observed: 17.25 ft at 12:10AM May 22, 2018Observed: 17.25 ft at 12:20AM May 22, 2018Observed: 17.25 ft at 12:30AM May 22, 2018Observed: 17.24 ft at 12:40AM May 22, 2018Observed: 17.25 ft at 12:50AM May 22, 2018Observed: 17.24 ft at 1:00AM May 22, 2018Observed: 17.25 ft at 1:10AM May 22, 2018Observed: 17.22 ft at 1:20AM May 22, 2018Observed: 17.22 ft at 1:30AM May 22, 2018Observed: 17.24 ft at 1:40AM May 22, 2018Observed: 17.19 ft at 1:50AM May 22, 2018Observed: 17.19 ft at 2:00AM May 22, 2018Observed: 17.21 ft at 2:10AM May 22, 2018Observed: 17.21 ft at 2:20AM May 22, 2018Observed: 17.2 ft at 2:30AM May 22, 2018Observed: 17.21 ft at 2:40AM May 22, 2018Observed: 17.19 ft at 2:50AM May 22, 2018Observed: 17.17 ft at 3:00AM May 22, 2018Observed: 17.2 ft at 3:10AM May 22, 2018Observed: 17.17 ft at 3:20AM May 22, 2018Observed: 17.16 ft at 3:30AM May 22, 2018Observed: 17.16 ft at 3:40AM May 22, 2018Observed: 17.16 ft at 3:50AM May 22, 2018Observed: 17.13 ft at 4:00AM May 22, 2018Observed: 17.16 ft at 4:10AM May 22, 2018Observed: 17.15 ft at 4:20AM May 22, 2018Observed: 17.15 ft at 4:30AM May 22, 2018Observed: 17.16 ft at 4:40AM May 22, 2018Observed: 17.14 ft at 4:50AM May 22, 2018Observed: 17.13 ft at 5:00AM May 22, 2018Observed: 17.14 ft at 5:10AM May 22, 2018Observed: 17.13 ft at 5:20AM May 22, 2018Observed: 17.12 ft at 5:30AM May 22, 2018Observed: 17.13 ft at 5:40AM May 22, 2018Observed: 17.1 ft at 5:50AM May 22, 2018Observed: 17.12 ft at 6:00AM May 22, 2018Highest Forecast: 17.1 ft 7:00AM May 22, 2018Forecast: 17 ft 1:00PM May 22, 2018Forecast: 16.8 ft 7:00PM May 22, 2018Forecast: 16.7 ft 1:00AM May 23, 2018Forecast: 16.6 ft 7:00AM May 23, 2018Forecast: 16.5 ft 1:00PM May 23, 2018Forecast: 16.3 ft 7:00PM May 23, 2018Forecast: 16.2 ft 1:00AM May 24, 2018Forecast: 16.1 ft 7:00AM May 24, 2018Forecast: 16 ft 1:00PM May 24, 2018Forecast: 15.8 ft 7:00PM May 24, 2018Forecast: 15.7 ft 1:00AM May 25, 2018Forecast: 15.6 ft 7:00AM May 25, 2018Forecast: 15.5 ft 1:00PM May 25, 2018Forecast: 15.4 ft 7:00PM May 25, 2018Forecast: 15.3 ft 1:00AM May 26, 2018Forecast: 15.1 ft 7:00AM May 26, 2018Forecast: 15 ft 1:00PM May 26, 2018Forecast: 14.9 ft 7:00PM May 26, 2018Forecast: 14.8 ft 1:00AM May 27, 2018Forecast: 14.7 ft 7:00AM May 27, 2018Forecast: 14.5 ft 1:00PM May 27, 2018Forecast: 14.4 ft 7:00PM May 27, 2018Forecast: 14.3 ft 1:00AM May 28, 2018Forecast: 14.1 ft 7:00AM May 28, 2018Forecast: 14 ft 1:00PM May 28, 2018Forecast: 13.8 ft 7:00PM May 28, 2018Forecast: 13.6 ft 1:00AM May 29, 2018Forecast: 13.5 ft 7:00AM May 29, 2018Forecast: 13.3 ft 1:00PM May 29, 2018Forecast: 13.1 ft 7:00PM May 29, 2018Forecast: 12.9 ft 1:00AM May 30, 2018Forecast: 12.8 ft 7:00AM May 30, 2018Forecast: 12.6 ft 1:00PM May 30, 2018Forecast: 12.5 ft 7:00PM May 30, 2018Forecast: 12.4 ft 1:00AM May 31, 2018Forecast: 12.2 ft 7:00AM May 31, 2018Forecast: 12.1 ft 1:00PM May 31, 2018Forecast: 12 ft 7:00PM May 31, 2018Forecast: 11.8 ft 1:00AM Jun 01, 2018Forecast: 11.7 ft 7:00AM Jun 01, 2018Forecast: 11.5 ft 1:00PM Jun 01, 2018Forecast: 11.4 ft 7:00PM Jun 01, 2018Forecast: 11.3 ft 1:00AM Jun 02, 2018Forecast: 11.2 ft 7:00AM Jun 02, 2018Forecast: 11 ft 1:00PM Jun 02, 2018Forecast: 10.9 ft 7:00PM Jun 02, 2018Forecast: 10.7 ft 1:00AM Jun 03, 2018Forecast: 10.5 ft 7:00AM Jun 03, 2018Forecast: 10.3 ft 1:00PM Jun 03, 2018Forecast: 10.2 ft 7:00PM Jun 03, 2018Forecast: 10.1 ft 1:00AM Jun 04, 2018Forecast: 10 ft 7:00AM Jun 04, 2018Forecast: 9.8 ft 1:00PM Jun 04, 2018Forecast: 9.7 ft 7:00PM Jun 04, 2018QLDI2(plotting HTIRG) Graph Created (6:53AM May 22, 2018)ObservedForecast (issued 9:24PM May 21)Latest observed value: 17.12 ft at 6:00 AM CDT 22-May-2018. Flood Stage is 17 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: 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: 17
Action Stage: 15
Low Stage (in feet): -9999

Historic Crests
(1) 31.30 ft on 07/13/1993
(2) 29.58 ft on 06/18/2008
(3) 27.70 ft on 04/25/1973
(4) 27.24 ft on 04/21/2013
(5) 26.55 ft on 05/16/2001
(6) 26.15 ft on 07/08/2014
(7) 24.86 ft on 10/04/1986
(8) 24.74 ft on 06/01/2013
(9) 24.05 ft on 05/29/1996
(10) 23.89 ft on 04/28/1965
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 18.52 ft on 06/03/2017
(2) 19.33 ft on 05/02/2017
(3) 17.23 ft on 04/07/2017
(4) 18.86 ft on 10/07/2016
(5) 21.08 ft on 12/29/2015
(6) 26.15 ft on 07/08/2014
(7) 24.74 ft on 06/01/2013
(8) 27.24 ft on 04/21/2013
(9) 19.58 ft on 06/28/2011
(10) 22.80 ft on 06/16/2011
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.
17 Flood Stage: Minor flooding begins.
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: 39.903889° N, Longitude: 91.429167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 17 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
Additional Information Collapse
How low could the river get?
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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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Page last modified: 21-Dec-2016 10:37 PM
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