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Hydrograph River at a Glance Download
North Branch Chicago River at Chicago (Grand Ave) Stage (ft)Observed: -1.93 ft at 6:40AM May 20, 2020Observed: -1.94 ft at 6:50AM May 20, 2020Observed: -1.96 ft at 7:00AM May 20, 2020Observed: -1.97 ft at 7:10AM May 20, 2020Observed: -1.99 ft at 7:20AM May 20, 2020Observed: -1.99 ft at 7:30AM May 20, 2020Observed: -2.01 ft at 7:40AM May 20, 2020Observed: -2.02 ft at 7:50AM May 20, 2020Observed: -2.03 ft at 8:00AM May 20, 2020Observed: -2.04 ft at 8:10AM May 20, 2020Observed: -2.06 ft at 8:20AM May 20, 2020Observed: -2.06 ft at 8:30AM May 20, 2020Observed: -2.08 ft at 8:40AM May 20, 2020Observed: -2.09 ft at 8:50AM May 20, 2020Observed: -2.1 ft at 9:00AM May 20, 2020Observed: -2.11 ft at 9:10AM May 20, 2020Observed: -2.12 ft at 9:20AM May 20, 2020Observed: -2.13 ft at 9:30AM May 20, 2020Observed: -2.15 ft at 9:40AM May 20, 2020Observed: -2.16 ft at 9:50AM May 20, 2020Observed: -2.17 ft at 10:00AM May 20, 2020Observed: -2.18 ft at 10:10AM May 20, 2020Observed: -2.19 ft at 10:20AM May 20, 2020Observed: -2.2 ft at 10:30AM May 20, 2020Observed: -2.15 ft at 10:40AM May 20, 2020Observed: -2.22 ft at 10:50AM May 20, 2020Observed: -2.22 ft at 11:00AM May 20, 2020Observed: -2.24 ft at 11:10AM May 20, 2020Observed: -2.23 ft at 11:20AM May 20, 2020Observed: -2.23 ft at 11:30AM May 20, 2020Observed: -2.24 ft at 11:40AM May 20, 2020Observed: -2.25 ft at 11:50AM May 20, 2020Observed: -2.26 ft at 12:00PM May 20, 2020Observed: -2.26 ft at 12:10PM May 20, 2020Observed: -2.26 ft at 12:20PM May 20, 2020Observed: -2.27 ft at 12:30PM May 20, 2020Observed: -2.28 ft at 12:40PM May 20, 2020Observed: -2.28 ft at 12:50PM May 20, 2020Observed: -2.29 ft at 1:00PM May 20, 2020Observed: -2.27 ft at 1:10PM May 20, 2020Observed: -2.24 ft at 1:20PM May 20, 2020Observed: -2.3 ft at 1:30PM May 20, 2020Observed: -2.32 ft at 1:40PM May 20, 2020Observed: -2.26 ft at 1:50PM May 20, 2020Observed: -2.24 ft at 2:00PM May 20, 2020Observed: -2.23 ft at 2:10PM May 20, 2020Observed: -2.29 ft at 2:20PM May 20, 2020Observed: -2.28 ft at 2:30PM May 20, 2020Observed: -2.21 ft at 2:40PM May 20, 2020Observed: -2.26 ft at 2:50PM May 20, 2020Observed: -2.24 ft at 3:00PM May 20, 2020Observed: -2.27 ft at 3:10PM May 20, 2020Observed: -2.25 ft at 3:20PM May 20, 2020Observed: -2.25 ft at 3:30PM May 20, 2020Observed: -2.21 ft at 3:40PM May 20, 2020Observed: -2.24 ft at 3:50PM May 20, 2020Observed: -2.26 ft at 4:00PM May 20, 2020Observed: -2.27 ft at 4:10PM May 20, 2020Observed: -2.27 ft at 4:20PM May 20, 2020Observed: -2.28 ft at 4:30PM May 20, 2020Observed: -2.27 ft at 4:40PM May 20, 2020Observed: -2.28 ft at 4:50PM May 20, 2020Observed: -2.29 ft at 5:00PM May 20, 2020Observed: -2.27 ft at 5:10PM May 20, 2020Observed: -2.28 ft at 5:20PM May 20, 2020Observed: -2.29 ft at 5:30PM May 20, 2020Observed: -2.29 ft at 5:40PM May 20, 2020Observed: -2.29 ft at 5:50PM May 20, 2020Observed: -2.28 ft at 6:00PM May 20, 2020Observed: -2.3 ft at 6:10PM May 20, 2020Observed: -2.29 ft at 6:20PM May 20, 2020Observed: -2.29 ft at 6:30PM May 20, 2020Observed: -2.29 ft at 6:40PM May 20, 2020Observed: -2.29 ft at 6:50PM May 20, 2020Observed: -2.29 ft at 7:00PM May 20, 2020Observed: -2.29 ft at 7:10PM May 20, 2020Observed: -2.29 ft at 7:20PM May 20, 2020Observed: -2.28 ft at 7:30PM May 20, 2020Observed: -2.28 ft at 7:40PM May 20, 2020Observed: -2.27 ft at 7:50PM May 20, 2020Observed: -2.27 ft at 8:00PM May 20, 2020Observed: -2.28 ft at 8:10PM May 20, 2020Observed: -2.27 ft at 8:20PM May 20, 2020Observed: -2.27 ft at 8:30PM May 20, 2020Observed: -2.28 ft at 8:40PM May 20, 2020Observed: -2.29 ft at 8:50PM May 20, 2020Observed: -2.3 ft at 9:00PM May 20, 2020Observed: -2.3 ft at 9:10PM May 20, 2020Observed: -2.31 ft at 9:20PM May 20, 2020Observed: -2.31 ft at 9:30PM May 20, 2020Observed: -2.31 ft at 9:40PM May 20, 2020Observed: -2.32 ft at 9:50PM May 20, 2020Observed: -2.32 ft at 10:00PM May 20, 2020Observed: -2.32 ft at 10:10PM May 20, 2020Observed: -2.32 ft at 10:20PM May 20, 2020Observed: -2.32 ft at 10:30PM May 20, 2020Observed: -2.32 ft at 10:40PM May 20, 2020Observed: -2.33 ft at 10:50PM May 20, 2020Observed: -2.33 ft at 11:00PM May 20, 2020Observed: -2.34 ft at 11:10PM May 20, 2020Observed: -2.36 ft at 11:20PM May 20, 2020Observed: -2.35 ft at 11:30PM May 20, 2020Observed: -2.36 ft at 11:40PM May 20, 2020Observed: -2.35 ft at 11:50PM May 20, 2020Observed: -2.33 ft at 12:00AM May 21, 2020Observed: -2.33 ft at 12:10AM May 21, 2020Observed: -2.31 ft at 12:20AM May 21, 2020Observed: -2.31 ft at 12:30AM May 21, 2020Observed: -2.3 ft at 12:40AM May 21, 2020Observed: -2.28 ft at 12:50AM May 21, 2020Observed: -2.28 ft at 1:00AM May 21, 2020Observed: -2.27 ft at 1:10AM May 21, 2020Observed: -2.27 ft at 1:20AM May 21, 2020Observed: -2.26 ft at 1:30AM May 21, 2020Observed: -2.26 ft at 1:40AM May 21, 2020Observed: -2.25 ft at 1:50AM May 21, 2020Observed: -2.25 ft at 2:00AM May 21, 2020Observed: -2.25 ft at 2:10AM May 21, 2020Observed: -2.25 ft at 2:20AM May 21, 2020Observed: -2.25 ft at 2:30AM May 21, 2020Observed: -2.25 ft at 2:40AM May 21, 2020Observed: -2.26 ft at 2:50AM May 21, 2020Observed: -2.27 ft at 3:00AM May 21, 2020Observed: -2.28 ft at 3:10AM May 21, 2020Observed: -2.3 ft at 3:20AM May 21, 2020Observed: -2.31 ft at 3:30AM May 21, 2020Observed: -2.31 ft at 3:40AM May 21, 2020Observed: -2.3 ft at 3:50AM May 21, 2020Observed: -2.3 ft at 4:00AM May 21, 2020Observed: -2.3 ft at 4:10AM May 21, 2020Observed: -2.3 ft at 4:20AM May 21, 2020Observed: -2.3 ft at 4:30AM May 21, 2020Observed: -2.3 ft at 4:40AM May 21, 2020Observed: -2.31 ft at 4:50AM May 21, 2020Observed: -2.32 ft at 5:00AM May 21, 2020Observed: -2.34 ft at 5:10AM May 21, 2020Observed: -2.33 ft at 5:20AM May 21, 2020Observed: -2.34 ft at 5:30AM May 21, 2020Observed: -2.34 ft at 5:40AM May 21, 2020Observed: -2.33 ft at 5:50AM May 21, 2020Observed: -2.34 ft at 6:00AM May 21, 2020Observed: -2.33 ft at 6:10AM May 21, 2020Observed: -2.33 ft at 6:20AM May 21, 2020Observed: -2.32 ft at 6:30AM May 21, 2020Observed: -2.33 ft at 6:40AM May 21, 2020Observed: -2.32 ft at 6:50AM May 21, 2020Observed: -2.32 ft at 7:00AM May 21, 2020Observed: -2.32 ft at 7:10AM May 21, 2020Observed: -2.32 ft at 7:20AM May 21, 2020Observed: -2.32 ft at 7:30AM May 21, 2020Observed: -2.32 ft at 7:40AM May 21, 2020Observed: -2.33 ft at 7:50AM May 21, 2020Observed: -2.32 ft at 8:00AM May 21, 2020Observed: -2.32 ft at 8:10AM May 21, 2020Observed: -2.29 ft at 8:20AM May 21, 2020Observed: -2.32 ft at 8:30AM May 21, 2020Observed: -2.34 ft at 8:40AM May 21, 2020Observed: -2.35 ft at 8:50AM May 21, 2020Observed: -2.33 ft at 9:00AM May 21, 2020Observed: -2.34 ft at 9:10AM May 21, 2020Observed: -2.34 ft at 9:20AM May 21, 2020Observed: -2.36 ft at 9:30AM May 21, 2020Observed: -2.35 ft at 9:40AM May 21, 2020Observed: -2.36 ft at 9:50AM May 21, 2020Observed: -2.36 ft at 10:00AM May 21, 2020Observed: -2.36 ft at 10:10AM May 21, 2020Observed: -2.36 ft at 10:20AM May 21, 2020Observed: -2.36 ft at 10:30AM May 21, 2020Observed: -2.31 ft at 10:40AM May 21, 2020Observed: -2.33 ft at 10:50AM May 21, 2020Observed: -2.35 ft at 11:00AM May 21, 2020Observed: -2.35 ft at 11:10AM May 21, 2020Observed: -2.32 ft at 11:20AM May 21, 2020Observed: -2.33 ft at 11:30AM May 21, 2020Observed: -2.33 ft at 11:40AM May 21, 2020Observed: -2.36 ft at 11:50AM May 21, 2020Observed: -2.38 ft at 12:00PM May 21, 2020Observed: -2.39 ft at 12:10PM May 21, 2020Observed: -2.4 ft at 12:20PM May 21, 2020Observed: -2.39 ft at 12:30PM May 21, 2020Observed: -2.4 ft at 12:40PM May 21, 2020Observed: -2.39 ft at 12:50PM May 21, 2020Observed: -2.38 ft at 1:00PM May 21, 2020Observed: -2.39 ft at 1:10PM May 21, 2020Observed: -2.4 ft at 1:20PM May 21, 2020Observed: -2.39 ft at 1:30PM May 21, 2020Observed: -2.42 ft at 1:40PM May 21, 2020Observed: -2.42 ft at 1:50PM May 21, 2020Observed: -2.44 ft at 2:00PM May 21, 2020Observed: -2.44 ft at 2:10PM May 21, 2020Observed: -2.45 ft at 2:20PM May 21, 2020Observed: -2.44 ft at 2:30PM May 21, 2020Observed: -2.43 ft at 2:40PM May 21, 2020Observed: -2.45 ft at 2:50PM May 21, 2020Observed: -2.46 ft at 3:00PM May 21, 2020Observed: -2.45 ft at 3:10PM May 21, 2020Observed: -2.44 ft at 3:20PM May 21, 2020Observed: -2.37 ft at 3:30PM May 21, 2020Observed: -2.41 ft at 3:40PM May 21, 2020Observed: -2.42 ft at 3:50PM May 21, 2020Observed: -2.41 ft at 4:00PM May 21, 2020Observed: -2.39 ft at 4:10PM May 21, 2020Observed: -2.39 ft at 4:20PM May 21, 2020Observed: -2.37 ft at 4:30PM May 21, 2020Observed: -2.38 ft at 4:40PM May 21, 2020Observed: -2.38 ft at 4:50PM May 21, 2020Observed: -2.37 ft at 5:00PM May 21, 2020Observed: -2.36 ft at 5:10PM May 21, 2020Observed: -2.36 ft at 5:20PM May 21, 2020Observed: -2.39 ft at 5:30PM May 21, 2020Observed: -2.37 ft at 5:40PM May 21, 2020Observed: -2.4 ft at 5:50PM May 21, 2020Observed: -2.39 ft at 6:00PM May 21, 2020Observed: -2.42 ft at 6:10PM May 21, 2020Observed: -2.38 ft at 6:20PM May 21, 2020Observed: -2.38 ft at 6:30PM May 21, 2020Observed: -2.39 ft at 6:40PM May 21, 2020Observed: -2.41 ft at 6:50PM May 21, 2020Observed: -2.41 ft at 7:00PM May 21, 2020Observed: -2.41 ft at 7:10PM May 21, 2020Observed: -2.4 ft at 7:20PM May 21, 2020Observed: -2.4 ft at 7:30PM May 21, 2020Observed: -2.39 ft at 7:40PM May 21, 2020Observed: -2.4 ft at 7:50PM May 21, 2020Observed: -2.4 ft at 8:00PM May 21, 2020Observed: -2.4 ft at 8:10PM May 21, 2020Observed: -2.25 ft at 8:20PM May 21, 2020Observed: -2.32 ft at 8:30PM May 21, 2020Observed: -2.38 ft at 8:40PM May 21, 2020Observed: -2.42 ft at 8:50PM May 21, 2020Observed: -2.36 ft at 9:00PM May 21, 2020Observed: -2.39 ft at 9:10PM May 21, 2020Observed: -2.37 ft at 9:20PM May 21, 2020Observed: -2.37 ft at 9:30PM May 21, 2020Observed: -2.38 ft at 9:40PM May 21, 2020Observed: -2.37 ft at 9:50PM May 21, 2020Observed: -2.37 ft at 10:00PM May 21, 2020Observed: -2.36 ft at 10:10PM May 21, 2020Observed: -2.34 ft at 10:20PM May 21, 2020Observed: -2.34 ft at 10:30PM May 21, 2020Observed: -2.32 ft at 10:40PM May 21, 2020Observed: -2.32 ft at 10:50PM May 21, 2020Observed: -2.3 ft at 11:00PM May 21, 2020Observed: -2.31 ft at 11:10PM May 21, 2020Observed: -2.36 ft at 11:20PM May 21, 2020Observed: -2.3 ft at 11:30PM May 21, 2020Observed: -2.32 ft at 11:40PM May 21, 2020Observed: -2.34 ft at 11:50PM May 21, 2020Observed: -2.33 ft at 12:00AM May 22, 2020Observed: -2.33 ft at 12:10AM May 22, 2020Observed: -2.32 ft at 12:20AM May 22, 2020Observed: -2.3 ft at 12:30AM May 22, 2020Observed: -2.3 ft at 12:40AM May 22, 2020Observed: -2.3 ft at 12:50AM May 22, 2020Observed: -2.3 ft at 1:00AM May 22, 2020Observed: -2.32 ft at 1:10AM May 22, 2020Observed: -2.33 ft at 1:20AM May 22, 2020Observed: -2.34 ft at 1:30AM May 22, 2020Observed: -2.33 ft at 1:40AM May 22, 2020Observed: -2.34 ft at 1:50AM May 22, 2020Observed: -2.33 ft at 2:00AM May 22, 2020Observed: -2.32 ft at 2:10AM May 22, 2020Observed: -2.32 ft at 2:20AM May 22, 2020Observed: -2.31 ft at 2:30AM May 22, 2020Observed: -2.31 ft at 2:40AM May 22, 2020Observed: -2.3 ft at 2:50AM May 22, 2020Observed: -2.3 ft at 3:00AM May 22, 2020Observed: -2.3 ft at 3:10AM May 22, 2020Observed: -2.3 ft at 3:20AM May 22, 2020Observed: -2.29 ft at 3:30AM May 22, 2020Observed: -2.29 ft at 3:40AM May 22, 2020Observed: -2.29 ft at 3:50AM May 22, 2020Observed: -2.29 ft at 4:00AM May 22, 2020Observed: -2.29 ft at 4:10AM May 22, 2020Observed: -2.29 ft at 4:20AM May 22, 2020Observed: -2.29 ft at 4:30AM May 22, 2020Observed: -2.29 ft at 4:40AM May 22, 2020Observed: -2.29 ft at 4:50AM May 22, 2020Observed: -2.3 ft at 5:00AM May 22, 2020Observed: -2.3 ft at 5:10AM May 22, 2020Observed: -2.3 ft at 5:20AM May 22, 2020Observed: -2.3 ft at 5:30AM May 22, 2020Observed: -2.07 ft at 5:40AM May 22, 2020Observed: -2.17 ft at 5:50AM May 22, 2020Observed: -2.27 ft at 6:00AM May 22, 2020Observed: -2.31 ft at 6:10AM May 22, 2020Observed: -2.24 ft at 6:20AM May 22, 2020Observed: -2.25 ft at 6:30AM May 22, 2020Observed: -2.21 ft at 6:40AM May 22, 2020Observed: -2.25 ft at 6:50AM May 22, 2020Observed: -2.29 ft at 7:00AM May 22, 2020Observed: -2.29 ft at 7:10AM May 22, 2020Observed: -2.27 ft at 7:20AM May 22, 2020Observed: -2.29 ft at 7:30AM May 22, 2020Observed: -2.3 ft at 7:40AM May 22, 2020Observed: -2.33 ft at 7:50AM May 22, 2020Observed: -2.32 ft at 8:00AM May 22, 2020Observed: -2.35 ft at 8:10AM May 22, 2020Observed: -2.36 ft at 8:20AM May 22, 2020Observed: -2.36 ft at 8:30AM May 22, 2020Observed: -2.4 ft at 8:40AM May 22, 2020Observed: -2.41 ft at 8:50AM May 22, 2020Observed: -2.41 ft at 9:00AM May 22, 2020Observed: -2.42 ft at 9:10AM May 22, 2020Observed: -2.4 ft at 9:20AM May 22, 2020Observed: -2.41 ft at 9:30AM May 22, 2020Observed: -2.42 ft at 9:40AM May 22, 2020Observed: -2.4 ft at 9:50AM May 22, 2020Observed: -2.43 ft at 10:00AM May 22, 2020Observed: -2.43 ft at 10:10AM May 22, 2020Observed: -2.43 ft at 10:20AM May 22, 2020Observed: -2.43 ft at 10:30AM May 22, 2020Observed: -2.44 ft at 10:40AM May 22, 2020Observed: -2.45 ft at 10:50AM May 22, 2020Observed: -2.38 ft at 11:00AM May 22, 2020Observed: -2.46 ft at 11:10AM May 22, 2020Observed: -2.45 ft at 11:20AM May 22, 2020Observed: -2.45 ft at 11:30AM May 22, 2020Observed: -2.42 ft at 11:40AM May 22, 2020Observed: -2.33 ft at 11:50AM May 22, 2020Observed: -2.44 ft at 12:00PM May 22, 2020Observed: -2.4 ft at 12:10PM May 22, 2020Observed: -2.4 ft at 12:20PM May 22, 2020Observed: -2.39 ft at 12:30PM May 22, 2020Observed: -2.37 ft at 12:40PM May 22, 2020Observed: -2.39 ft at 12:50PM May 22, 2020Observed: -2.38 ft at 1:00PM May 22, 2020Observed: -2.38 ft at 1:10PM May 22, 2020Observed: -2.39 ft at 1:20PM May 22, 2020Observed: -2.38 ft at 1:30PM May 22, 2020Observed: -2.37 ft at 1:40PM May 22, 2020Observed: -2.35 ft at 1:50PM May 22, 2020Observed: -2.33 ft at 2:00PM May 22, 2020Observed: -2.36 ft at 2:10PM May 22, 2020Observed: -2.39 ft at 2:20PM May 22, 2020Observed: -2.42 ft at 2:30PM May 22, 2020Observed: -2.37 ft at 2:40PM May 22, 2020Observed: -2.46 ft at 2:50PM May 22, 2020Observed: -2.48 ft at 3:00PM May 22, 2020Observed: -2.49 ft at 3:10PM May 22, 2020Observed: -2.46 ft at 3:20PM May 22, 2020Observed: -2.49 ft at 3:30PM May 22, 2020Observed: -2.49 ft at 3:40PM May 22, 2020Observed: -2.5 ft at 3:50PM May 22, 2020Observed: -2.52 ft at 4:00PM May 22, 2020Observed: -2.47 ft at 4:10PM May 22, 2020Observed: -2.53 ft at 4:20PM May 22, 2020Observed: -2.55 ft at 4:30PM May 22, 2020Observed: -2.57 ft at 4:40PM May 22, 2020Observed: -2.58 ft at 4:50PM May 22, 2020Observed: -2.61 ft at 5:00PM May 22, 2020Observed: -2.63 ft at 5:10PM May 22, 2020Observed: -2.66 ft at 5:20PM May 22, 2020Observed: -2.67 ft at 5:30PM May 22, 2020Observed: -2.7 ft at 5:40PM May 22, 2020Observed: -2.72 ft at 5:50PM May 22, 2020Observed: -2.74 ft at 6:00PM May 22, 2020Observed: -2.75 ft at 6:10PM May 22, 2020Observed: -2.76 ft at 6:20PM May 22, 2020Observed: -2.78 ft at 6:30PM May 22, 2020Observed: -2.78 ft at 6:40PM May 22, 2020Observed: -2.78 ft at 6:50PM May 22, 2020Observed: -2.84 ft at 7:00PM May 22, 2020Observed: -2.86 ft at 7:10PM May 22, 2020Observed: -2.86 ft at 7:20PM May 22, 2020Observed: -2.87 ft at 7:30PM May 22, 2020Observed: -2.9 ft at 7:40PM May 22, 2020Observed: -2.92 ft at 7:50PM May 22, 2020Observed: -2.93 ft at 8:00PM May 22, 2020Observed: -2.95 ft at 8:10PM May 22, 2020Observed: -2.96 ft at 8:20PM May 22, 2020Observed: -2.97 ft at 8:30PM May 22, 2020Observed: -2.98 ft at 8:40PM May 22, 2020Observed: -3 ft at 8:50PM May 22, 2020Observed: -3.01 ft at 9:00PM May 22, 2020Observed: -3.02 ft at 9:10PM May 22, 2020Observed: -3.04 ft at 9:20PM May 22, 2020Observed: -3.04 ft at 9:30PM May 22, 2020Observed: -3.04 ft at 9:40PM May 22, 2020Observed: -3.04 ft at 9:50PM May 22, 2020Observed: -3.05 ft at 10:00PM May 22, 2020Observed: -3.05 ft at 10:10PM May 22, 2020Observed: -3.06 ft at 10:20PM May 22, 2020Observed: -3.07 ft at 10:30PM May 22, 2020Observed: -3.08 ft at 10:40PM May 22, 2020Observed: -3.1 ft at 10:50PM May 22, 2020Observed: -3.11 ft at 11:00PM May 22, 2020Observed: -3.11 ft at 11:10PM May 22, 2020Observed: -3.09 ft at 11:20PM May 22, 2020Observed: -3.1 ft at 11:30PM May 22, 2020Observed: -3.1 ft at 11:40PM May 22, 2020Observed: -3.11 ft at 11:50PM May 22, 2020Observed: -3.1 ft at 12:00AM May 23, 2020Observed: -3.07 ft at 12:10AM May 23, 2020Observed: -3.08 ft at 12:20AM May 23, 2020Observed: -3.09 ft at 12:30AM May 23, 2020Observed: -3.1 ft at 12:40AM May 23, 2020Observed: -3.1 ft at 12:50AM May 23, 2020Observed: -3.1 ft at 1:00AM May 23, 2020Observed: -3.1 ft at 1:10AM May 23, 2020Observed: -3.11 ft at 1:20AM May 23, 2020Observed: -3.11 ft at 1:30AM May 23, 2020Observed: -3.11 ft at 1:40AM May 23, 2020Observed: -3.12 ft at 1:50AM May 23, 2020Observed: -3.12 ft at 2:00AM May 23, 2020Observed: -3.12 ft at 2:10AM May 23, 2020Observed: -3.12 ft at 2:20AM May 23, 2020Observed: -3.12 ft at 2:30AM May 23, 2020Observed: -3.13 ft at 2:40AM May 23, 2020Observed: -3.13 ft at 2:50AM May 23, 2020Observed: -3.11 ft at 3:00AM May 23, 2020Observed: -3.1 ft at 3:10AM May 23, 2020Observed: -3.09 ft at 3:20AM May 23, 2020Observed: -3.06 ft at 3:30AM May 23, 2020Observed: -3.05 ft at 3:40AM May 23, 2020Observed: -3.05 ft at 3:50AM May 23, 2020Observed: -3.04 ft at 4:00AM May 23, 2020Observed: -3.03 ft at 4:10AM May 23, 2020Observed: -3.02 ft at 4:20AM May 23, 2020Observed: -3.02 ft at 4:30AM May 23, 2020Observed: -3.02 ft at 4:40AM May 23, 2020Observed: -3.01 ft at 4:50AM May 23, 2020Observed: -3.01 ft at 5:00AM May 23, 2020Observed: -3.01 ft at 5:10AM May 23, 2020Observed: -3 ft at 5:20AM May 23, 2020Observed: -3 ft at 5:30AM May 23, 2020Observed: -2.99 ft at 5:40AM May 23, 2020Observed: -2.99 ft at 5:50AM May 23, 2020Observed: -2.99 ft at 6:00AM May 23, 2020Observed: -2.99 ft at 6:10AM May 23, 2020Observed: -2.98 ft at 6:20AM May 23, 2020Observed: -2.96 ft at 6:30AM May 23, 2020Observed: -2.98 ft at 6:40AM May 23, 2020Observed: -2.98 ft at 6:50AM May 23, 2020Observed: -2.98 ft at 7:00AM May 23, 2020Observed: -2.99 ft at 7:10AM May 23, 2020Observed: -3.02 ft at 7:20AM May 23, 2020Observed: -3.02 ft at 7:30AM May 23, 2020Observed: -3.02 ft at 7:40AM May 23, 2020Observed: -3.02 ft at 7:50AM May 23, 2020Observed: -3.03 ft at 8:00AM May 23, 2020Observed: -3.03 ft at 8:10AM May 23, 2020Observed: -3.04 ft at 8:20AM May 23, 2020Observed: -3.04 ft at 8:30AM May 23, 2020Observed: -3.04 ft at 8:40AM May 23, 2020Observed: -3.04 ft at 8:50AM May 23, 2020Observed: -3.04 ft at 9:00AM May 23, 2020Observed: -3.04 ft at 9:10AM May 23, 2020Observed: -3.06 ft at 9:20AM May 23, 2020Observed: -3.07 ft at 9:30AM May 23, 2020Observed: -3.08 ft at 9:40AM May 23, 2020Observed: -3.06 ft at 9:50AM May 23, 2020Observed: -3.09 ft at 10:00AM May 23, 2020Observed: -3.1 ft at 10:10AM May 23, 2020Observed: -3.11 ft at 10:20AM May 23, 2020Observed: -3.13 ft at 10:30AM May 23, 2020Observed: -3.15 ft at 10:40AM May 23, 2020Observed: -3.16 ft at 10:50AM May 23, 2020Observed: -3.17 ft at 11:00AM May 23, 2020Observed: -3.18 ft at 11:10AM May 23, 2020Observed: -3.19 ft at 11:20AM May 23, 2020Observed: -3.16 ft at 11:30AM May 23, 2020Observed: -3.2 ft at 11:40AM May 23, 2020Observed: -3.23 ft at 11:50AM May 23, 2020Observed: -3.24 ft at 12:00PM May 23, 2020Observed: -3.22 ft at 12:10PM May 23, 2020Observed: -3.2 ft at 12:20PM May 23, 2020Observed: -3.16 ft at 12:30PM May 23, 2020Observed: -3.23 ft at 12:40PM May 23, 2020Observed: -3.2 ft at 12:50PM May 23, 2020Observed: -3.12 ft at 1:00PM May 23, 2020Observed: -3.21 ft at 1:10PM May 23, 2020Observed: -3.21 ft at 1:20PM May 23, 2020Observed: -3.11 ft at 1:30PM May 23, 2020Observed: -3.17 ft at 1:40PM May 23, 2020Observed: -3.2 ft at 1:50PM May 23, 2020Observed: -3.19 ft at 2:00PM May 23, 2020Observed: -3.14 ft at 2:10PM May 23, 2020Observed: -3.23 ft at 2:20PM May 23, 2020Observed: -3.24 ft at 2:30PM May 23, 2020Observed: -3.19 ft at 2:40PM May 23, 2020Observed: -3.23 ft at 2:50PM May 23, 2020Observed: -3.26 ft at 3:00PM May 23, 2020Observed: -3.26 ft at 3:10PM May 23, 2020Observed: -3.18 ft at 3:20PM May 23, 2020Observed: -3.27 ft at 3:30PM May 23, 2020Observed: -3.28 ft at 3:40PM May 23, 2020Observed: -3.31 ft at 3:50PM May 23, 2020Observed: -3.28 ft at 4:00PM May 23, 2020Observed: -3.27 ft at 4:10PM May 23, 2020Observed: -3.27 ft at 4:20PM May 23, 2020Observed: -3.27 ft at 4:30PM May 23, 2020Observed: -3.24 ft at 4:40PM May 23, 2020Observed: -3.24 ft at 4:50PM May 23, 2020Observed: -3.22 ft at 5:00PM May 23, 2020Observed: -3.21 ft at 5:10PM May 23, 2020Observed: -3.18 ft at 5:20PM May 23, 2020Observed: -3.2 ft at 5:30PM May 23, 2020Observed: -3.2 ft at 5:40PM May 23, 2020Observed: -3.22 ft at 5:50PM May 23, 2020Observed: -3.23 ft at 6:00PM May 23, 2020Observed: -3.22 ft at 6:10PM May 23, 2020Observed: -3.23 ft at 6:20PM May 23, 2020Observed: -3.23 ft at 6:30PM May 23, 2020Observed: -3.24 ft at 6:40PM May 23, 2020Observed: -3.22 ft at 6:50PM May 23, 2020Observed: -3.22 ft at 7:00PM May 23, 2020Observed: -3.22 ft at 7:10PM May 23, 2020Observed: -3.23 ft at 7:20PM May 23, 2020Observed: -3.22 ft at 7:30PM May 23, 2020Observed: -3.24 ft at 7:40PM May 23, 2020Observed: -3.24 ft at 7:50PM May 23, 2020Observed: -3.24 ft at 8:00PM May 23, 2020Observed: -3.25 ft at 8:10PM May 23, 2020Observed: -3.27 ft at 8:20PM May 23, 2020Observed: -3.27 ft at 8:30PM May 23, 2020Observed: -3.29 ft at 8:40PM May 23, 2020Observed: -3.29 ft at 8:50PM May 23, 2020Observed: -3.31 ft at 9:00PM May 23, 2020Observed: -3.29 ft at 9:10PM May 23, 2020Observed: -3.24 ft at 9:20PM May 23, 2020Observed: -3.2 ft at 9:30PM May 23, 2020Observed: -3.15 ft at 9:40PM May 23, 2020Observed: -3.01 ft at 9:50PM May 23, 2020Observed: -2.9 ft at 10:00PM May 23, 2020Observed: -2.74 ft at 10:10PM May 23, 2020Observed: -2.65 ft at 10:20PM May 23, 2020Observed: -2.58 ft at 10:30PM May 23, 2020Observed: -2.54 ft at 10:40PM May 23, 2020Observed: -2.51 ft at 10:50PM May 23, 2020Observed: -2.49 ft at 11:00PM May 23, 2020Observed: -2.47 ft at 11:10PM May 23, 2020Observed: -2.46 ft at 11:20PM May 23, 2020Observed: -2.43 ft at 11:30PM May 23, 2020Observed: -2.41 ft at 11:40PM May 23, 2020Observed: -2.44 ft at 11:50PM May 23, 2020Observed: -2.44 ft at 12:00AM May 24, 2020Observed: -2.44 ft at 12:10AM May 24, 2020Observed: -2.46 ft at 12:20AM May 24, 2020Observed: -2.47 ft at 12:30AM May 24, 2020Observed: -2.49 ft at 12:40AM May 24, 2020Observed: -2.51 ft at 12:50AM May 24, 2020Observed: -2.53 ft at 1:00AM May 24, 2020Observed: -2.54 ft at 1:10AM May 24, 2020Observed: -2.56 ft at 1:20AM May 24, 2020Observed: -2.58 ft at 1:30AM May 24, 2020Observed: -2.6 ft at 1:40AM May 24, 2020Observed: -2.61 ft at 1:50AM May 24, 2020Observed: -2.63 ft at 2:00AM May 24, 2020Observed: -2.63 ft at 2:10AM May 24, 2020Observed: -2.64 ft at 2:20AM May 24, 2020Observed: -2.67 ft at 2:30AM May 24, 2020Observed: -2.68 ft at 2:40AM May 24, 2020Observed: -2.72 ft at 2:50AM May 24, 2020Observed: -2.75 ft at 3:00AM May 24, 2020Observed: -2.77 ft at 3:10AM May 24, 2020Observed: -2.73 ft at 3:20AM May 24, 2020Observed: -2.76 ft at 3:30AM May 24, 2020Observed: -2.8 ft at 3:40AM May 24, 2020Observed: -2.81 ft at 3:50AM May 24, 2020Observed: -2.82 ft at 4:00AM May 24, 2020Observed: -2.83 ft at 4:10AM May 24, 2020Observed: -2.84 ft at 4:20AM May 24, 2020Observed: -2.84 ft at 4:30AM May 24, 2020Observed: -2.85 ft at 4:40AM May 24, 2020Observed: -2.87 ft at 4:50AM May 24, 2020Observed: -2.89 ft at 5:00AM May 24, 2020Observed: -2.9 ft at 5:10AM May 24, 2020Observed: -2.92 ft at 5:20AM May 24, 2020Observed: -2.93 ft at 5:30AM May 24, 2020Observed: -2.93 ft at 5:40AM May 24, 2020Observed: -2.94 ft at 5:50AM May 24, 2020Observed: -2.94 ft at 6:00AM May 24, 2020Observed: -2.95 ft at 6:10AM May 24, 2020Observed: -2.96 ft at 6:20AM May 24, 2020Observed: -2.97 ft at 6:30AM May 24, 2020Observed: -2.97 ft at 6:40AM May 24, 2020Observed: -2.98 ft at 6:50AM May 24, 2020Observed: -2.99 ft at 7:00AM May 24, 2020Observed: -2.99 ft at 7:10AM May 24, 2020Observed: -2.97 ft at 7:20AM May 24, 2020Observed: -2.96 ft at 7:30AM May 24, 2020Observed: -2.95 ft at 7:40AM May 24, 2020Observed: -2.95 ft at 7:50AM May 24, 2020Observed: -2.94 ft at 8:00AM May 24, 2020Observed: -2.93 ft at 8:10AM May 24, 2020Observed: -2.92 ft at 8:20AM May 24, 2020Observed: -2.91 ft at 8:30AM May 24, 2020Observed: -2.9 ft at 8:40AM May 24, 2020Observed: -2.89 ft at 8:50AM May 24, 2020Observed: -2.88 ft at 9:00AM May 24, 2020Observed: -2.89 ft at 9:10AM May 24, 2020Observed: -2.9 ft at 9:20AM May 24, 2020Observed: -2.9 ft at 9:30AM May 24, 2020Observed: -2.9 ft at 9:40AM May 24, 2020Observed: -2.89 ft at 9:50AM May 24, 2020Observed: -2.9 ft at 10:00AM May 24, 2020Observed: -2.89 ft at 10:10AM May 24, 2020Observed: -2.89 ft at 10:20AM May 24, 2020Observed: -2.88 ft at 10:30AM May 24, 2020Observed: -2.88 ft at 10:40AM May 24, 2020Observed: -2.87 ft at 10:50AM May 24, 2020Observed: -2.88 ft at 11:00AM May 24, 2020Observed: -2.89 ft at 11:10AM May 24, 2020Observed: -2.9 ft at 11:20AM May 24, 2020Observed: -2.9 ft at 11:30AM May 24, 2020Observed: -2.9 ft at 11:40AM May 24, 2020Observed: -2.89 ft at 11:50AM May 24, 2020Observed: -2.86 ft at 12:00PM May 24, 2020Observed: -2.87 ft at 12:10PM May 24, 2020Observed: -2.83 ft at 12:20PM May 24, 2020Observed: -2.83 ft at 12:30PM May 24, 2020Observed: -2.88 ft at 12:40PM May 24, 2020Observed: -2.85 ft at 12:50PM May 24, 2020Observed: -2.86 ft at 1:00PM May 24, 2020Observed: -2.87 ft at 1:10PM May 24, 2020Observed: -2.86 ft at 1:20PM May 24, 2020Observed: -2.86 ft at 1:30PM May 24, 2020Observed: -2.86 ft at 1:40PM May 24, 2020Observed: -2.84 ft at 1:50PM May 24, 2020Observed: -2.82 ft at 2:00PM May 24, 2020Observed: -2.81 ft at 2:10PM May 24, 2020Observed: -2.81 ft at 2:20PM May 24, 2020Observed: -2.81 ft at 2:30PM May 24, 2020Observed: -2.79 ft at 2:40PM May 24, 2020Observed: -2.85 ft at 2:50PM May 24, 2020Observed: -2.79 ft at 3:00PM May 24, 2020Observed: -2.77 ft at 3:10PM May 24, 2020Observed: -2.8 ft at 3:20PM May 24, 2020Observed: -2.74 ft at 3:30PM May 24, 2020Observed: -2.7 ft at 3:40PM May 24, 2020Observed: -2.72 ft at 3:50PM May 24, 2020Observed: -2.69 ft at 4:00PM May 24, 2020Observed: -2.72 ft at 4:10PM May 24, 2020Observed: -2.72 ft at 4:20PM May 24, 2020Observed: -2.7 ft at 4:30PM May 24, 2020Observed: -2.66 ft at 4:40PM May 24, 2020Observed: -2.64 ft at 4:50PM May 24, 2020Observed: -2.7 ft at 5:00PM May 24, 2020Observed: -2.62 ft at 5:10PM May 24, 2020Observed: -2.66 ft at 5:20PM May 24, 2020Observed: -2.66 ft at 5:30PM May 24, 2020Observed: -2.62 ft at 5:40PM May 24, 2020Observed: -2.61 ft at 5:50PM May 24, 2020Observed: -2.65 ft at 6:00PM May 24, 2020Observed: -2.65 ft at 6:10PM May 24, 2020Observed: -2.62 ft at 6:20PM May 24, 2020Observed: -2.57 ft at 6:30PM May 24, 2020Observed: -2.6 ft at 6:40PM May 24, 2020Observed: -2.64 ft at 6:50PM May 24, 2020Observed: -2.64 ft at 7:00PM May 24, 2020Observed: -2.58 ft at 7:10PM May 24, 2020Observed: -2.6 ft at 7:20PM May 24, 2020Observed: -2.58 ft at 7:30PM May 24, 2020Observed: -2.56 ft at 7:40PM May 24, 2020Observed: -2.56 ft at 7:50PM May 24, 2020Observed: -2.54 ft at 8:00PM May 24, 2020Observed: -2.55 ft at 8:10PM May 24, 2020Observed: -2.56 ft at 8:20PM May 24, 2020Observed: -2.58 ft at 8:30PM May 24, 2020Observed: -2.56 ft at 8:40PM May 24, 2020Observed: -2.56 ft at 8:50PM May 24, 2020Observed: -2.56 ft at 9:00PM May 24, 2020Observed: -2.55 ft at 9:10PM May 24, 2020Observed: -2.54 ft at 9:20PM May 24, 2020Observed: -2.53 ft at 9:30PM May 24, 2020Observed: -2.51 ft at 9:40PM May 24, 2020Observed: -2.51 ft at 9:50PM May 24, 2020Observed: -2.5 ft at 10:00PM May 24, 2020Observed: -2.49 ft at 10:10PM May 24, 2020Observed: -2.48 ft at 10:20PM May 24, 2020Observed: -2.49 ft at 10:30PM May 24, 2020Observed: -2.49 ft at 10:40PM May 24, 2020Observed: -2.49 ft at 10:50PM May 24, 2020Observed: -2.48 ft at 11:00PM May 24, 2020Observed: -2.48 ft at 11:10PM May 24, 2020Observed: -2.46 ft at 11:20PM May 24, 2020Observed: -2.45 ft at 11:30PM May 24, 2020Observed: -2.44 ft at 11:40PM May 24, 2020Observed: -2.44 ft at 11:50PM May 24, 2020Observed: -2.43 ft at 12:00AM May 25, 2020Observed: -2.43 ft at 12:10AM May 25, 2020Observed: -2.43 ft at 12:20AM May 25, 2020Observed: -2.42 ft at 12:30AM May 25, 2020Observed: -2.42 ft at 12:40AM May 25, 2020Observed: -2.41 ft at 12:50AM May 25, 2020Observed: -2.41 ft at 1:00AM May 25, 2020Observed: -2.4 ft at 1:10AM May 25, 2020Observed: -2.4 ft at 1:20AM May 25, 2020Observed: -2.4 ft at 1:30AM May 25, 2020Observed: -2.4 ft at 1:40AM May 25, 2020Observed: -2.4 ft at 1:50AM May 25, 2020Observed: -2.4 ft at 2:00AM May 25, 2020Observed: -2.39 ft at 2:10AM May 25, 2020Observed: -2.38 ft at 2:20AM May 25, 2020Observed: -2.38 ft at 2:30AM May 25, 2020Observed: -2.38 ft at 2:40AM May 25, 2020Observed: -2.37 ft at 2:50AM May 25, 2020Observed: -2.37 ft at 3:00AM May 25, 2020Observed: -2.36 ft at 3:10AM May 25, 2020Observed: -2.36 ft at 3:20AM May 25, 2020Observed: -2.36 ft at 3:30AM May 25, 2020Observed: -2.35 ft at 3:40AM May 25, 2020Observed: -2.34 ft at 3:50AM May 25, 2020Observed: -2.34 ft at 4:00AM May 25, 2020Observed: -2.33 ft at 4:10AM May 25, 2020Observed: -2.32 ft at 4:20AM May 25, 2020Observed: -2.32 ft at 4:30AM May 25, 2020Observed: -2.32 ft at 4:40AM May 25, 2020Observed: -2.32 ft at 4:50AM May 25, 2020Observed: -2.31 ft at 5:00AM May 25, 2020USGS--Water Resources of the United StatesNBGI2(plotting HGIRP) Graph Created (6:39AM May 25, 2020)ObservedLatest observed value: -2.31 ft at 5:00 AM CDT 25-May-2020. Flood Stage is 3 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
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Datum: NAVD88
Metadata
NOTE: The observations from this river gauge may be discontinued soon; for additional details please refer to information from the USGS

NOTE: Graphical forecasts are not available for the North Branch Chicago River at Chicago (Grand Ave). During times of high water, forecast crest information can be found in the text products.

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Upstream Gauge - at Chicago (Pulaski Rd) Upstream Gauge Downstream Gauge Downstream Gauge - at Chicago (Columbus Dr)
Flood Categories (in feet)
Major Flood Stage: 6
Moderate Flood Stage: 5
Flood Stage: 3
Action Stage: 2
Low Stage (in feet): -9999

Historic Crests
(1) 5.70 ft on 10/10/1954
(2) 5.00 ft on 07/24/2010
(3) 4.28 ft on 07/23/2011
(4) 3.72 ft on 10/14/2017
(5) 3.67 ft on 04/18/2013
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 3.72 ft on 10/14/2017
(2) 3.37 ft on 06/15/2015
(3) 2.86 ft on 06/30/2014
(4) 3.67 ft on 04/18/2013
(5) 1.50 ft on 08/26/2012
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:16
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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
6.5 Numerous structures flooded near the river in the River West, River North, and West Loop neighborhoods.
6 Railroad tracks near Lake and Canal Streets are threatened.
5.5 A few residences near Grand Avenue are threatened. Railroad tracks near Union Station are threatened.
5 Lower level of residences may be threatened along Wells Street near Polk Street. Low-lying parking lots are threatened between Grand Avenue and Chicago Avenue.
3 Numerous stretches of the Chicago Riverwalk are inundated. Opening of the Chicago Lock is triggered to reduce flood impacts.
2 Low-lying sections of the Chicago Riverwalk are threatened.
About This Location Collapse

Latitude: 41.891667° N, Longitude: 87.641667° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 3 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 579.20 Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 579.48 Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 0.0 Not Available Chicago City Datum

Current/Historical Observations:

Additional Information Collapse
This gage is on the "Chicago City Datum" (CCD). This causes stages at this gauge to often be reported as negative. Stages are not the same as river depth.
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
Chicago Weather Forecast Office
333 W. University Dr.
Romeoville, IL 60446
(815) 834-1435
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Page last modified: 1-Mar-2019 12:34 AM
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