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  NOTICE:There is a service interruption for a number of stream gauges nationwide due to the Global Positioning System (GPS) Rollover that occurred on April 6 at 23:59 GMT. The National Weather Service is working with federal, state, and local partners to ensure those affected gauges obtain the necessary updates to resume data transmission. We apologize for the service interruption and hope to have the data restored as soon as possible.

Hydrograph River at a Glance Download
North Branch Chicago River at Chicago (Grand Ave) Stage (ft)Observed: -2.13 ft at 4:50PM Apr 18, 2019Observed: -2.14 ft at 5:00PM Apr 18, 2019Observed: -2.15 ft at 5:10PM Apr 18, 2019Observed: -2.18 ft at 5:20PM Apr 18, 2019Observed: -2.18 ft at 5:30PM Apr 18, 2019Observed: -2.18 ft at 5:40PM Apr 18, 2019Observed: -2.18 ft at 5:50PM Apr 18, 2019Observed: -2.14 ft at 6:00PM Apr 18, 2019Observed: -2.22 ft at 6:10PM Apr 18, 2019Observed: -2.25 ft at 6:20PM Apr 18, 2019Observed: -2.26 ft at 6:30PM Apr 18, 2019Observed: -2.27 ft at 6:40PM Apr 18, 2019Observed: -2.27 ft at 6:50PM Apr 18, 2019Observed: -2.24 ft at 7:00PM Apr 18, 2019Observed: -2.27 ft at 7:10PM Apr 18, 2019Observed: -2.28 ft at 7:20PM Apr 18, 2019Observed: -2.32 ft at 7:30PM Apr 18, 2019Observed: -2.33 ft at 7:40PM Apr 18, 2019Observed: -2.33 ft at 7:50PM Apr 18, 2019Observed: -2.32 ft at 8:00PM Apr 18, 2019Observed: -2.31 ft at 8:10PM Apr 18, 2019Observed: -2.34 ft at 8:20PM Apr 18, 2019Observed: -2.35 ft at 8:30PM Apr 18, 2019Observed: -2.38 ft at 8:40PM Apr 18, 2019Observed: -2.36 ft at 8:50PM Apr 18, 2019Observed: -2.36 ft at 9:00PM Apr 18, 2019Observed: -2.34 ft at 9:10PM Apr 18, 2019Observed: -2.3 ft at 9:20PM Apr 18, 2019Observed: -2.37 ft at 9:30PM Apr 18, 2019Observed: -2.39 ft at 9:40PM Apr 18, 2019Observed: -2.39 ft at 9:50PM Apr 18, 2019Observed: -2.38 ft at 10:00PM Apr 18, 2019Observed: -2.39 ft at 10:10PM Apr 18, 2019Observed: -2.36 ft at 10:20PM Apr 18, 2019Observed: -2.35 ft at 10:30PM Apr 18, 2019Observed: -2.36 ft at 10:40PM Apr 18, 2019Observed: -2.36 ft at 10:50PM Apr 18, 2019Observed: -2.35 ft at 11:00PM Apr 18, 2019Observed: -2.34 ft at 11:10PM Apr 18, 2019Observed: -2.34 ft at 11:20PM Apr 18, 2019Observed: -2.38 ft at 11:30PM Apr 18, 2019Observed: -2.33 ft at 11:40PM Apr 18, 2019Observed: -2.32 ft at 11:50PM Apr 18, 2019Observed: -2.31 ft at 12:00AM Apr 19, 2019Observed: -2.32 ft at 12:10AM Apr 19, 2019Observed: -2.29 ft at 12:20AM Apr 19, 2019Observed: -2.29 ft at 12:30AM Apr 19, 2019Observed: -2.3 ft at 12:40AM Apr 19, 2019Observed: -2.3 ft at 12:50AM Apr 19, 2019Observed: -2.29 ft at 1:00AM Apr 19, 2019Observed: -2.29 ft at 1:10AM Apr 19, 2019Observed: -2.29 ft at 1:20AM Apr 19, 2019Observed: -2.28 ft at 1:30AM Apr 19, 2019Observed: -2.29 ft at 1:40AM Apr 19, 2019Observed: -2.28 ft at 1:50AM Apr 19, 2019Observed: -2.28 ft at 2:00AM Apr 19, 2019Observed: -2.28 ft at 2:10AM Apr 19, 2019Observed: -2.27 ft at 2:20AM Apr 19, 2019Observed: -2.29 ft at 2:30AM Apr 19, 2019Observed: -2.28 ft at 2:40AM Apr 19, 2019Observed: -2.29 ft at 2:50AM Apr 19, 2019Observed: -2.28 ft at 3:00AM Apr 19, 2019Observed: -2.28 ft at 3:10AM Apr 19, 2019Observed: -2.28 ft at 3:20AM Apr 19, 2019Observed: -2.29 ft at 3:30AM Apr 19, 2019Observed: -2.3 ft at 3:40AM Apr 19, 2019Observed: -2.3 ft at 3:50AM Apr 19, 2019Observed: -2.3 ft at 4:00AM Apr 19, 2019Observed: -2.28 ft at 4:10AM Apr 19, 2019Observed: -2.28 ft at 4:20AM Apr 19, 2019Observed: -2.28 ft at 4:30AM Apr 19, 2019Observed: -2.28 ft at 4:40AM Apr 19, 2019Observed: -2.28 ft at 4:50AM Apr 19, 2019Observed: -2.28 ft at 5:00AM Apr 19, 2019Observed: -2.28 ft at 5:10AM Apr 19, 2019Observed: -2.27 ft at 5:20AM Apr 19, 2019Observed: -2.3 ft at 5:30AM Apr 19, 2019Observed: -2.29 ft at 5:40AM Apr 19, 2019Observed: -2.29 ft at 5:50AM Apr 19, 2019Observed: -2.27 ft at 6:00AM Apr 19, 2019Observed: -2.28 ft at 6:10AM Apr 19, 2019Observed: -2.27 ft at 6:20AM Apr 19, 2019Observed: -2.28 ft at 6:30AM Apr 19, 2019Observed: -2.28 ft at 6:40AM Apr 19, 2019Observed: -2.29 ft at 6:50AM Apr 19, 2019Observed: -2.32 ft at 7:00AM Apr 19, 2019Observed: -2.33 ft at 7:10AM Apr 19, 2019Observed: -2.33 ft at 7:20AM Apr 19, 2019Observed: -2.29 ft at 7:30AM Apr 19, 2019Observed: -2.3 ft at 7:40AM Apr 19, 2019Observed: -2.31 ft at 7:50AM Apr 19, 2019Observed: -2.32 ft at 8:00AM Apr 19, 2019Observed: -2.35 ft at 8:10AM Apr 19, 2019Observed: -2.35 ft at 8:20AM Apr 19, 2019Observed: -2.34 ft at 8:30AM Apr 19, 2019Observed: -2.35 ft at 8:40AM Apr 19, 2019Observed: -2.35 ft at 8:50AM Apr 19, 2019Observed: -2.38 ft at 9:00AM Apr 19, 2019Observed: -2.38 ft at 9:10AM Apr 19, 2019Observed: -2.4 ft at 9:20AM Apr 19, 2019Observed: -2.4 ft at 9:30AM Apr 19, 2019Observed: -2.41 ft at 9:40AM Apr 19, 2019Observed: -2.41 ft at 9:50AM Apr 19, 2019Observed: -2.42 ft at 10:00AM Apr 19, 2019Observed: -2.41 ft at 10:10AM Apr 19, 2019Observed: -2.44 ft at 10:20AM Apr 19, 2019Observed: -2.44 ft at 10:30AM Apr 19, 2019Observed: -2.49 ft at 10:40AM Apr 19, 2019Observed: -2.45 ft at 10:50AM Apr 19, 2019Observed: -2.46 ft at 11:00AM Apr 19, 2019Observed: -2.46 ft at 11:10AM Apr 19, 2019Observed: -2.47 ft at 11:20AM Apr 19, 2019Observed: -2.46 ft at 11:30AM Apr 19, 2019Observed: -2.45 ft at 11:40AM Apr 19, 2019Observed: -2.46 ft at 11:50AM Apr 19, 2019Observed: -2.47 ft at 12:00PM Apr 19, 2019Observed: -2.49 ft at 12:10PM Apr 19, 2019Observed: -2.48 ft at 12:20PM Apr 19, 2019Observed: -2.48 ft at 12:30PM Apr 19, 2019Observed: -2.53 ft at 12:40PM Apr 19, 2019Observed: -2.52 ft at 12:50PM Apr 19, 2019Observed: -2.53 ft at 1:00PM Apr 19, 2019Observed: -2.56 ft at 1:10PM Apr 19, 2019Observed: -2.57 ft at 1:20PM Apr 19, 2019Observed: -2.58 ft at 1:30PM Apr 19, 2019Observed: -2.56 ft at 1:40PM Apr 19, 2019Observed: -2.54 ft at 1:50PM Apr 19, 2019Observed: -2.5 ft at 2:00PM Apr 19, 2019Observed: -2.56 ft at 2:10PM Apr 19, 2019Observed: -2.6 ft at 2:20PM Apr 19, 2019Observed: -2.6 ft at 2:30PM Apr 19, 2019Observed: -2.62 ft at 2:40PM Apr 19, 2019Observed: -2.6 ft at 2:50PM Apr 19, 2019Observed: -2.6 ft at 3:00PM Apr 19, 2019Observed: -2.62 ft at 3:10PM Apr 19, 2019Observed: -2.62 ft at 3:20PM Apr 19, 2019Observed: -2.64 ft at 3:30PM Apr 19, 2019Observed: -2.63 ft at 3:40PM Apr 19, 2019Observed: -2.62 ft at 3:50PM Apr 19, 2019Observed: -2.58 ft at 4:00PM Apr 19, 2019Observed: -2.6 ft at 4:10PM Apr 19, 2019Observed: -2.58 ft at 4:20PM Apr 19, 2019Observed: -2.58 ft at 4:30PM Apr 19, 2019Observed: -2.6 ft at 4:40PM Apr 19, 2019Observed: -2.6 ft at 4:50PM Apr 19, 2019Observed: -2.55 ft at 5:00PM Apr 19, 2019Observed: -2.56 ft at 5:10PM Apr 19, 2019Observed: -2.55 ft at 5:20PM Apr 19, 2019Observed: -2.58 ft at 5:30PM Apr 19, 2019Observed: -2.58 ft at 5:40PM Apr 19, 2019Observed: -2.53 ft at 5:50PM Apr 19, 2019Observed: -2.48 ft at 6:00PM Apr 19, 2019Observed: -2.45 ft at 6:10PM Apr 19, 2019Observed: -2.41 ft at 6:20PM Apr 19, 2019Observed: -2.41 ft at 6:30PM Apr 19, 2019Observed: -2.38 ft at 6:40PM Apr 19, 2019Observed: -2.4 ft at 6:50PM Apr 19, 2019Observed: -2.38 ft at 7:00PM Apr 19, 2019Observed: -2.35 ft at 7:10PM Apr 19, 2019Observed: -2.36 ft at 7:20PM Apr 19, 2019Observed: -2.38 ft at 7:30PM Apr 19, 2019Observed: -2.41 ft at 7:40PM Apr 19, 2019Observed: -2.39 ft at 7:50PM Apr 19, 2019Observed: -2.39 ft at 8:00PM Apr 19, 2019Observed: -2.34 ft at 8:10PM Apr 19, 2019Observed: -2.32 ft at 8:20PM Apr 19, 2019Observed: -2.34 ft at 8:30PM Apr 19, 2019Observed: -2.33 ft at 8:40PM Apr 19, 2019Observed: -2.32 ft at 8:50PM Apr 19, 2019Observed: -2.31 ft at 9:00PM Apr 19, 2019Observed: -2.29 ft at 9:10PM Apr 19, 2019Observed: -2.32 ft at 9:20PM Apr 19, 2019Observed: -2.32 ft at 9:30PM Apr 19, 2019Observed: -2.34 ft at 9:40PM Apr 19, 2019Observed: -2.34 ft at 9:50PM Apr 19, 2019Observed: -2.33 ft at 10:00PM Apr 19, 2019Observed: -2.32 ft at 10:10PM Apr 19, 2019Observed: -2.31 ft at 10:20PM Apr 19, 2019Observed: -2.32 ft at 10:30PM Apr 19, 2019Observed: -2.3 ft at 10:40PM Apr 19, 2019Observed: -2.33 ft at 10:50PM Apr 19, 2019Observed: -2.32 ft at 11:00PM Apr 19, 2019Observed: -2.3 ft at 11:10PM Apr 19, 2019Observed: -2.28 ft at 11:20PM Apr 19, 2019Observed: -2.27 ft at 11:30PM Apr 19, 2019Observed: -2.28 ft at 11:40PM Apr 19, 2019Observed: -2.34 ft at 11:50PM Apr 19, 2019Observed: -2.33 ft at 12:00AM Apr 20, 2019Observed: -2.32 ft at 12:10AM Apr 20, 2019Observed: -2.33 ft at 12:20AM Apr 20, 2019Observed: -2.31 ft at 12:30AM Apr 20, 2019Observed: -2.28 ft at 12:40AM Apr 20, 2019Observed: -2.27 ft at 12:50AM Apr 20, 2019Observed: -2.28 ft at 1:00AM Apr 20, 2019Observed: -2.31 ft at 1:10AM Apr 20, 2019Observed: -2.32 ft at 1:20AM Apr 20, 2019Observed: -2.33 ft at 1:30AM Apr 20, 2019Observed: -2.32 ft at 1:40AM Apr 20, 2019Observed: -2.29 ft at 1:50AM Apr 20, 2019Observed: -2.28 ft at 2:00AM Apr 20, 2019Observed: -2.26 ft at 2:10AM Apr 20, 2019Observed: -2.26 ft at 2:20AM Apr 20, 2019Observed: -2.27 ft at 2:30AM Apr 20, 2019Observed: -2.25 ft at 2:40AM Apr 20, 2019Observed: -2.24 ft at 2:50AM Apr 20, 2019Observed: -2.22 ft at 3:00AM Apr 20, 2019Observed: -2.24 ft at 3:10AM Apr 20, 2019Observed: -2.26 ft at 3:20AM Apr 20, 2019Observed: -2.28 ft at 3:30AM Apr 20, 2019Observed: -2.29 ft at 3:40AM Apr 20, 2019Observed: -2.27 ft at 3:50AM Apr 20, 2019Observed: -2.24 ft at 4:00AM Apr 20, 2019Observed: -2.24 ft at 4:10AM Apr 20, 2019Observed: -2.22 ft at 4:20AM Apr 20, 2019Observed: -2.24 ft at 4:30AM Apr 20, 2019Observed: -2.26 ft at 4:40AM Apr 20, 2019Observed: -2.3 ft at 4:50AM Apr 20, 2019Observed: -2.3 ft at 5:00AM Apr 20, 2019Observed: -2.3 ft at 5:10AM Apr 20, 2019Observed: -2.28 ft at 5:20AM Apr 20, 2019Observed: -2.26 ft at 5:30AM Apr 20, 2019Observed: -2.26 ft at 5:40AM Apr 20, 2019Observed: -2.26 ft at 5:50AM Apr 20, 2019Observed: -2.24 ft at 6:00AM Apr 20, 2019Observed: -2.24 ft at 6:10AM Apr 20, 2019Observed: -2.22 ft at 6:20AM Apr 20, 2019Observed: -2.21 ft at 6:30AM Apr 20, 2019Observed: -2.21 ft at 6:40AM Apr 20, 2019Observed: -2.24 ft at 6:50AM Apr 20, 2019Observed: -2.27 ft at 7:00AM Apr 20, 2019Observed: -2.28 ft at 7:10AM Apr 20, 2019Observed: -2.28 ft at 7:20AM Apr 20, 2019Observed: -2.26 ft at 7:30AM Apr 20, 2019Observed: -2.24 ft at 7:40AM Apr 20, 2019Observed: -2.24 ft at 7:50AM Apr 20, 2019Observed: -2.23 ft at 8:00AM Apr 20, 2019Observed: -2.22 ft at 8:10AM Apr 20, 2019Observed: -2.24 ft at 8:20AM Apr 20, 2019Observed: -2.22 ft at 8:30AM Apr 20, 2019Observed: -2.22 ft at 8:40AM Apr 20, 2019Observed: -2.21 ft at 8:50AM Apr 20, 2019Observed: -2.25 ft at 9:00AM Apr 20, 2019Observed: -2.28 ft at 9:10AM Apr 20, 2019Observed: -2.28 ft at 9:20AM Apr 20, 2019Observed: -2.28 ft at 9:30AM Apr 20, 2019Observed: -2.26 ft at 9:40AM Apr 20, 2019Observed: -2.24 ft at 9:50AM Apr 20, 2019Observed: -2.27 ft at 10:00AM Apr 20, 2019Observed: -2.27 ft at 10:10AM Apr 20, 2019Observed: -2.26 ft at 10:20AM Apr 20, 2019Observed: -2.26 ft at 10:30AM Apr 20, 2019Observed: -2.25 ft at 10:40AM Apr 20, 2019Observed: -2.22 ft at 10:50AM Apr 20, 2019Observed: -2.2 ft at 11:00AM Apr 20, 2019Observed: -2.23 ft at 11:10AM Apr 20, 2019Observed: -2.2 ft at 11:20AM Apr 20, 2019Observed: -2.28 ft at 11:30AM Apr 20, 2019Observed: -2.3 ft at 11:40AM Apr 20, 2019Observed: -2.26 ft at 11:50AM Apr 20, 2019Observed: -2.28 ft at 12:00PM Apr 20, 2019Observed: -2.28 ft at 12:10PM Apr 20, 2019Observed: -2.28 ft at 12:20PM Apr 20, 2019Observed: -2.26 ft at 12:30PM Apr 20, 2019Observed: -2.29 ft at 12:40PM Apr 20, 2019Observed: -2.25 ft at 12:50PM Apr 20, 2019Observed: -2.24 ft at 1:00PM Apr 20, 2019Observed: -2.24 ft at 1:10PM Apr 20, 2019Observed: -2.21 ft at 1:20PM Apr 20, 2019Observed: -2.2 ft at 1:30PM Apr 20, 2019Observed: -2.18 ft at 1:40PM Apr 20, 2019Observed: -2.22 ft at 1:50PM Apr 20, 2019Observed: -2.21 ft at 2:00PM Apr 20, 2019Observed: -2.2 ft at 2:10PM Apr 20, 2019Observed: -2.2 ft at 2:20PM Apr 20, 2019Observed: -2.11 ft at 2:30PM Apr 20, 2019Observed: -2.15 ft at 2:40PM Apr 20, 2019Observed: -2.12 ft at 2:50PM Apr 20, 2019Observed: -2.12 ft at 3:00PM Apr 20, 2019Observed: -2.11 ft at 3:10PM Apr 20, 2019Observed: -2.11 ft at 3:20PM Apr 20, 2019Observed: -2.07 ft at 3:30PM Apr 20, 2019Observed: -2.09 ft at 3:40PM Apr 20, 2019Observed: -2.04 ft at 3:50PM Apr 20, 2019Observed: -2.06 ft at 4:00PM Apr 20, 2019Observed: -2.05 ft at 4:10PM Apr 20, 2019Observed: -2.07 ft at 4:20PM Apr 20, 2019Observed: -2.09 ft at 4:30PM Apr 20, 2019Observed: -2.13 ft at 4:40PM Apr 20, 2019Observed: -2.12 ft at 4:50PM Apr 20, 2019Observed: -2.11 ft at 5:00PM Apr 20, 2019Observed: -2.09 ft at 5:10PM Apr 20, 2019Observed: -2.07 ft at 5:20PM Apr 20, 2019Observed: -2.07 ft at 5:30PM Apr 20, 2019Observed: -2.04 ft at 5:40PM Apr 20, 2019Observed: -2.07 ft at 5:50PM Apr 20, 2019Observed: -2.06 ft at 6:00PM Apr 20, 2019Observed: -2.1 ft at 6:10PM Apr 20, 2019Observed: -2.09 ft at 6:20PM Apr 20, 2019Observed: -2.09 ft at 6:30PM Apr 20, 2019Observed: -2.09 ft at 6:40PM Apr 20, 2019Observed: -2.08 ft at 6:50PM Apr 20, 2019Observed: -2.06 ft at 7:00PM Apr 20, 2019Observed: -2.06 ft at 7:10PM Apr 20, 2019Observed: -2.04 ft at 7:20PM Apr 20, 2019Observed: -2.02 ft at 7:30PM Apr 20, 2019Observed: -2 ft at 7:40PM Apr 20, 2019Observed: -2.02 ft at 7:50PM Apr 20, 2019Observed: -2 ft at 8:00PM Apr 20, 2019Observed: -2 ft at 8:10PM Apr 20, 2019Observed: -2 ft at 8:20PM Apr 20, 2019Observed: -2.03 ft at 8:30PM Apr 20, 2019Observed: -2.09 ft at 8:40PM Apr 20, 2019Observed: -2.06 ft at 8:50PM Apr 20, 2019Observed: -2.04 ft at 9:00PM Apr 20, 2019Observed: -2 ft at 9:10PM Apr 20, 2019Observed: -2.01 ft at 9:20PM Apr 20, 2019Observed: -2.05 ft at 9:30PM Apr 20, 2019Observed: -2.08 ft at 9:40PM Apr 20, 2019Observed: -2.09 ft at 9:50PM Apr 20, 2019Observed: -2.09 ft at 10:00PM Apr 20, 2019Observed: -2.06 ft at 10:10PM Apr 20, 2019Observed: -2.05 ft at 10:20PM Apr 20, 2019Observed: -2.04 ft at 10:30PM Apr 20, 2019Observed: -2.04 ft at 10:40PM Apr 20, 2019Observed: -2.04 ft at 10:50PM Apr 20, 2019Observed: -2.04 ft at 11:00PM Apr 20, 2019Observed: -2.06 ft at 11:10PM Apr 20, 2019Observed: -2.08 ft at 11:20PM Apr 20, 2019Observed: -2.08 ft at 11:30PM Apr 20, 2019Observed: -2.07 ft at 11:40PM Apr 20, 2019Observed: -2.06 ft at 11:50PM Apr 20, 2019Observed: -2.06 ft at 12:00AM Apr 21, 2019Observed: -2.06 ft at 12:10AM Apr 21, 2019Observed: -2.06 ft at 12:20AM Apr 21, 2019Observed: -2.06 ft at 12:30AM Apr 21, 2019Observed: -2.06 ft at 12:40AM Apr 21, 2019Observed: -2.03 ft at 12:50AM Apr 21, 2019Observed: -2.02 ft at 1:00AM Apr 21, 2019Observed: -2 ft at 1:10AM Apr 21, 2019Observed: -2.01 ft at 1:20AM Apr 21, 2019Observed: -2.01 ft at 1:30AM Apr 21, 2019Observed: -2.01 ft at 1:40AM Apr 21, 2019Observed: -2 ft at 1:50AM Apr 21, 2019Observed: -1.99 ft at 2:00AM Apr 21, 2019Observed: -1.98 ft at 2:10AM Apr 21, 2019Observed: -1.98 ft at 2:20AM Apr 21, 2019Observed: -1.98 ft at 2:30AM Apr 21, 2019Observed: -1.98 ft at 2:40AM Apr 21, 2019Observed: -2 ft at 2:50AM Apr 21, 2019Observed: -2.04 ft at 3:00AM Apr 21, 2019Observed: -2.08 ft at 3:10AM Apr 21, 2019Observed: -2.1 ft at 3:20AM Apr 21, 2019Observed: -2.1 ft at 3:30AM Apr 21, 2019Observed: -2.09 ft at 3:40AM Apr 21, 2019Observed: -2.08 ft at 3:50AM Apr 21, 2019Observed: -2.07 ft at 4:00AM Apr 21, 2019Observed: -2.07 ft at 4:10AM Apr 21, 2019Observed: -2.07 ft at 4:20AM Apr 21, 2019Observed: -2.07 ft at 4:30AM Apr 21, 2019Observed: -2.06 ft at 4:40AM Apr 21, 2019Observed: -2.06 ft at 4:50AM Apr 21, 2019Observed: -2.05 ft at 5:00AM Apr 21, 2019Observed: -2.05 ft at 5:10AM Apr 21, 2019Observed: -2.05 ft at 5:20AM Apr 21, 2019Observed: -2.05 ft at 5:30AM Apr 21, 2019Observed: -2.04 ft at 5:40AM Apr 21, 2019Observed: -2.03 ft at 5:50AM Apr 21, 2019Observed: -2.03 ft at 6:00AM Apr 21, 2019Observed: -2.03 ft at 6:10AM Apr 21, 2019Observed: -2.03 ft at 6:20AM Apr 21, 2019Observed: -2.03 ft at 6:30AM Apr 21, 2019Observed: -2.05 ft at 6:40AM Apr 21, 2019Observed: -2.08 ft at 6:50AM Apr 21, 2019Observed: -2.11 ft at 7:00AM Apr 21, 2019Observed: -2.11 ft at 7:10AM Apr 21, 2019Observed: -2.11 ft at 7:20AM Apr 21, 2019Observed: -2.09 ft at 7:30AM Apr 21, 2019Observed: -2.08 ft at 7:40AM Apr 21, 2019Observed: -2.08 ft at 7:50AM Apr 21, 2019Observed: -2.08 ft at 8:00AM Apr 21, 2019Observed: -2.07 ft at 8:10AM Apr 21, 2019Observed: -2.07 ft at 8:20AM Apr 21, 2019Observed: -2.05 ft at 8:30AM Apr 21, 2019Observed: -2.06 ft at 8:40AM Apr 21, 2019Observed: -2.04 ft at 8:50AM Apr 21, 2019Observed: -2.03 ft at 9:00AM Apr 21, 2019Observed: -2.06 ft at 9:10AM Apr 21, 2019Observed: -2.03 ft at 9:20AM Apr 21, 2019Observed: -2.02 ft at 9:30AM Apr 21, 2019Observed: -2.03 ft at 9:40AM Apr 21, 2019Observed: -2.03 ft at 9:50AM Apr 21, 2019Observed: -2.03 ft at 10:00AM Apr 21, 2019Observed: -2.03 ft at 10:10AM Apr 21, 2019Observed: -2.04 ft at 10:20AM Apr 21, 2019Observed: -2.02 ft at 10:30AM Apr 21, 2019Observed: -2.06 ft at 10:40AM Apr 21, 2019Observed: -2.04 ft at 10:50AM Apr 21, 2019Observed: -2.04 ft at 11:00AM Apr 21, 2019Observed: -1.99 ft at 11:10AM Apr 21, 2019Observed: -2.01 ft at 11:20AM Apr 21, 2019Observed: -1.97 ft at 11:30AM Apr 21, 2019Observed: -2.05 ft at 11:40AM Apr 21, 2019Observed: -2.01 ft at 11:50AM Apr 21, 2019Observed: -2.1 ft at 12:00PM Apr 21, 2019Observed: -2.07 ft at 12:10PM Apr 21, 2019Observed: -2.06 ft at 12:20PM Apr 21, 2019Observed: -2.02 ft at 12:30PM Apr 21, 2019Observed: -2.08 ft at 12:40PM Apr 21, 2019Observed: -2.06 ft at 12:50PM Apr 21, 2019Observed: -2.04 ft at 1:00PM Apr 21, 2019Observed: -2.06 ft at 1:10PM Apr 21, 2019Observed: -2.01 ft at 1:20PM Apr 21, 2019Observed: -2.06 ft at 1:30PM Apr 21, 2019Observed: -2.02 ft at 1:40PM Apr 21, 2019Observed: -2.01 ft at 1:50PM Apr 21, 2019Observed: -2.03 ft at 2:00PM Apr 21, 2019Observed: -2 ft at 2:10PM Apr 21, 2019Observed: -2.01 ft at 2:20PM Apr 21, 2019Observed: -2.05 ft at 2:30PM Apr 21, 2019Observed: -2.03 ft at 2:40PM Apr 21, 2019Observed: -2 ft at 2:50PM Apr 21, 2019Observed: -2.05 ft at 3:00PM Apr 21, 2019Observed: -2.03 ft at 3:10PM Apr 21, 2019Observed: -2.06 ft at 3:20PM Apr 21, 2019Observed: -2.12 ft at 3:30PM Apr 21, 2019Observed: -2.13 ft at 3:40PM Apr 21, 2019Observed: -2.07 ft at 3:50PM Apr 21, 2019Observed: -2.11 ft at 4:00PM Apr 21, 2019Observed: -2.09 ft at 4:10PM Apr 21, 2019Observed: -2.11 ft at 4:20PM Apr 21, 2019Observed: -2.07 ft at 4:30PM Apr 21, 2019Observed: -2.07 ft at 4:40PM Apr 21, 2019Observed: -2.08 ft at 4:50PM Apr 21, 2019Observed: -2.08 ft at 5:00PM Apr 21, 2019Observed: -2.04 ft at 5:10PM Apr 21, 2019Observed: -2.05 ft at 5:20PM Apr 21, 2019Observed: -2.06 ft at 5:30PM Apr 21, 2019Observed: -1.99 ft at 5:40PM Apr 21, 2019Observed: -2.01 ft at 5:50PM Apr 21, 2019Observed: -2.02 ft at 6:00PM Apr 21, 2019Observed: -1.98 ft at 6:10PM Apr 21, 2019Observed: -1.99 ft at 6:20PM Apr 21, 2019Observed: -1.96 ft at 6:30PM Apr 21, 2019Observed: -2.01 ft at 6:40PM Apr 21, 2019Observed: -2 ft at 6:50PM Apr 21, 2019Observed: -2.03 ft at 7:00PM Apr 21, 2019Observed: -2.05 ft at 7:10PM Apr 21, 2019Observed: -2.01 ft at 7:20PM Apr 21, 2019Observed: -2.06 ft at 7:30PM Apr 21, 2019Observed: -2 ft at 7:40PM Apr 21, 2019Observed: -2.04 ft at 7:50PM Apr 21, 2019Observed: -1.99 ft at 8:00PM Apr 21, 2019Observed: -2.05 ft at 8:10PM Apr 21, 2019Observed: -2 ft at 8:20PM Apr 21, 2019Observed: -2.02 ft at 8:30PM Apr 21, 2019Observed: -2 ft at 8:40PM Apr 21, 2019Observed: -2.02 ft at 8:50PM Apr 21, 2019Observed: -2.03 ft at 9:00PM Apr 21, 2019Observed: -2.04 ft at 9:10PM Apr 21, 2019Observed: -2.04 ft at 9:20PM Apr 21, 2019Observed: -2.04 ft at 9:30PM Apr 21, 2019Observed: -2.04 ft at 9:40PM Apr 21, 2019Observed: -2.04 ft at 9:50PM Apr 21, 2019Observed: -2.05 ft at 10:00PM Apr 21, 2019Observed: -2.05 ft at 10:10PM Apr 21, 2019Observed: -2.06 ft at 10:20PM Apr 21, 2019Observed: -2.05 ft at 10:30PM Apr 21, 2019Observed: -2.04 ft at 10:40PM Apr 21, 2019Observed: -2.04 ft at 10:50PM Apr 21, 2019Observed: -2.06 ft at 11:00PM Apr 21, 2019Observed: -2.05 ft at 11:10PM Apr 21, 2019Observed: -2.06 ft at 11:20PM Apr 21, 2019Observed: -2.07 ft at 11:30PM Apr 21, 2019Observed: -2.1 ft at 11:40PM Apr 21, 2019Observed: -2.14 ft at 11:50PM Apr 21, 2019Observed: -2.14 ft at 12:00AM Apr 22, 2019Observed: -2.12 ft at 12:30AM Apr 22, 2019Observed: -2.13 ft at 12:40AM Apr 22, 2019Observed: -2.13 ft at 12:50AM Apr 22, 2019Observed: -2.13 ft at 1:00AM Apr 22, 2019Observed: -2.12 ft at 1:10AM Apr 22, 2019Observed: -2.12 ft at 1:20AM Apr 22, 2019Observed: -2.1 ft at 1:30AM Apr 22, 2019Observed: -2.12 ft at 1:40AM Apr 22, 2019Observed: -2.15 ft at 1:50AM Apr 22, 2019Observed: -2.18 ft at 2:00AM Apr 22, 2019Observed: -2.17 ft at 2:10AM Apr 22, 2019Observed: -2.15 ft at 2:20AM Apr 22, 2019Observed: -2.14 ft at 2:30AM Apr 22, 2019Observed: -2.11 ft at 2:40AM Apr 22, 2019Observed: -2.11 ft at 2:50AM Apr 22, 2019Observed: -2.15 ft at 3:00AM Apr 22, 2019Observed: -2.13 ft at 3:10AM Apr 22, 2019Observed: -2.14 ft at 3:20AM Apr 22, 2019Observed: -2.14 ft at 3:30AM Apr 22, 2019Observed: -2.18 ft at 3:40AM Apr 22, 2019Observed: -2.19 ft at 3:50AM Apr 22, 2019Observed: -2.22 ft at 4:00AM Apr 22, 2019Observed: -2.21 ft at 4:10AM Apr 22, 2019Observed: -2.2 ft at 4:20AM Apr 22, 2019Observed: -2.19 ft at 4:30AM Apr 22, 2019Observed: -2.18 ft at 4:40AM Apr 22, 2019Observed: -2.19 ft at 4:50AM Apr 22, 2019Observed: -2.19 ft at 5:00AM Apr 22, 2019Observed: -2.22 ft at 5:10AM Apr 22, 2019Observed: -2.25 ft at 5:20AM Apr 22, 2019Observed: -2.25 ft at 5:30AM Apr 22, 2019Observed: -2.28 ft at 5:40AM Apr 22, 2019Observed: -2.25 ft at 5:50AM Apr 22, 2019Observed: -2.25 ft at 6:00AM Apr 22, 2019Observed: -2.24 ft at 6:10AM Apr 22, 2019Observed: -2.24 ft at 6:20AM Apr 22, 2019Observed: -2.24 ft at 6:30AM Apr 22, 2019Observed: -2.24 ft at 6:40AM Apr 22, 2019Observed: -2.24 ft at 6:50AM Apr 22, 2019Observed: -2.24 ft at 7:00AM Apr 22, 2019Observed: -2.24 ft at 7:10AM Apr 22, 2019Observed: -2.24 ft at 7:20AM Apr 22, 2019Observed: -2.24 ft at 7:30AM Apr 22, 2019Observed: -2.25 ft at 7:40AM Apr 22, 2019Observed: -2.25 ft at 7:50AM Apr 22, 2019Observed: -2.24 ft at 8:00AM Apr 22, 2019Observed: -2.25 ft at 8:10AM Apr 22, 2019Observed: -2.24 ft at 8:20AM Apr 22, 2019Observed: -2.22 ft at 8:30AM Apr 22, 2019Observed: -2.24 ft at 8:40AM Apr 22, 2019Observed: -2.23 ft at 8:50AM Apr 22, 2019Observed: -2.21 ft at 9:00AM Apr 22, 2019Observed: -2.24 ft at 9:10AM Apr 22, 2019Observed: -2.22 ft at 9:20AM Apr 22, 2019Observed: -2.25 ft at 9:30AM Apr 22, 2019Observed: -2.23 ft at 9:40AM Apr 22, 2019Observed: -2.23 ft at 9:50AM Apr 22, 2019Observed: -2.2 ft at 10:00AM Apr 22, 2019Observed: -2.21 ft at 10:10AM Apr 22, 2019Observed: -2.2 ft at 10:20AM Apr 22, 2019Observed: -2.18 ft at 10:30AM Apr 22, 2019Observed: -2.17 ft at 10:40AM Apr 22, 2019Observed: -2.18 ft at 10:50AM Apr 22, 2019Observed: -2.13 ft at 11:00AM Apr 22, 2019Observed: -2.17 ft at 11:10AM Apr 22, 2019Observed: -2.13 ft at 11:20AM Apr 22, 2019Observed: -2.14 ft at 11:30AM Apr 22, 2019Observed: -2.19 ft at 11:40AM Apr 22, 2019Observed: -2.18 ft at 11:50AM Apr 22, 2019Observed: -2.24 ft at 12:00PM Apr 22, 2019Observed: -2.27 ft at 12:10PM Apr 22, 2019Observed: -2.26 ft at 12:20PM Apr 22, 2019Observed: -2.25 ft at 12:30PM Apr 22, 2019Observed: -2.26 ft at 12:40PM Apr 22, 2019Observed: -2.21 ft at 12:50PM Apr 22, 2019Observed: -2.21 ft at 1:00PM Apr 22, 2019Observed: -2.21 ft at 1:10PM Apr 22, 2019Observed: -2.14 ft at 1:20PM Apr 22, 2019Observed: -2.2 ft at 1:30PM Apr 22, 2019Observed: -2.22 ft at 1:40PM Apr 22, 2019Observed: -2.15 ft at 1:50PM Apr 22, 2019Observed: -2.19 ft at 2:00PM Apr 22, 2019Observed: -2.14 ft at 2:10PM Apr 22, 2019Observed: -2.16 ft at 2:20PM Apr 22, 2019Observed: -2.18 ft at 2:30PM Apr 22, 2019Observed: -2.15 ft at 2:40PM Apr 22, 2019Observed: -2.19 ft at 2:50PM Apr 22, 2019Observed: -2.19 ft at 3:00PM Apr 22, 2019Observed: -2.14 ft at 3:10PM Apr 22, 2019Observed: -2.17 ft at 3:20PM Apr 22, 2019Observed: -2.18 ft at 3:30PM Apr 22, 2019Observed: -2.14 ft at 3:40PM Apr 22, 2019Observed: -2.22 ft at 3:50PM Apr 22, 2019Observed: -2.24 ft at 4:00PM Apr 22, 2019Observed: -2.26 ft at 4:10PM Apr 22, 2019Observed: -2.24 ft at 4:20PM Apr 22, 2019Observed: -2.21 ft at 4:30PM Apr 22, 2019Observed: -2.2 ft at 4:40PM Apr 22, 2019Observed: -2.22 ft at 4:50PM Apr 22, 2019Observed: -2.22 ft at 5:00PM Apr 22, 2019Observed: -2.2 ft at 5:10PM Apr 22, 2019Observed: -2.24 ft at 5:20PM Apr 22, 2019Observed: -2.24 ft at 5:30PM Apr 22, 2019Observed: -2.27 ft at 5:40PM Apr 22, 2019Observed: -2.28 ft at 5:50PM Apr 22, 2019Observed: -2.25 ft at 6:00PM Apr 22, 2019Observed: -2.24 ft at 6:10PM Apr 22, 2019Observed: -2.29 ft at 6:20PM Apr 22, 2019Observed: -2.31 ft at 6:30PM Apr 22, 2019Observed: -2.35 ft at 6:40PM Apr 22, 2019Observed: -2.3 ft at 6:50PM Apr 22, 2019Observed: -2.34 ft at 7:00PM Apr 22, 2019Observed: -2.26 ft at 7:10PM Apr 22, 2019Observed: -2.3 ft at 7:20PM Apr 22, 2019Observed: -2.28 ft at 7:30PM Apr 22, 2019Observed: -2.29 ft at 7:40PM Apr 22, 2019Observed: -2.28 ft at 7:50PM Apr 22, 2019Observed: -2.26 ft at 8:00PM Apr 22, 2019Observed: -2.26 ft at 8:10PM Apr 22, 2019Observed: -2.24 ft at 8:20PM Apr 22, 2019Observed: -2.24 ft at 8:30PM Apr 22, 2019Observed: -2.24 ft at 8:40PM Apr 22, 2019Observed: -2.25 ft at 8:50PM Apr 22, 2019Observed: -2.25 ft at 9:00PM Apr 22, 2019Observed: -2.24 ft at 9:10PM Apr 22, 2019Observed: -2.21 ft at 9:20PM Apr 22, 2019Observed: -2.23 ft at 9:30PM Apr 22, 2019Observed: -2.28 ft at 9:40PM Apr 22, 2019Observed: -2.34 ft at 9:50PM Apr 22, 2019Observed: -2.3 ft at 10:00PM Apr 22, 2019Observed: -2.22 ft at 11:10PM Apr 22, 2019Observed: -2.19 ft at 11:20PM Apr 22, 2019Observed: -2.2 ft at 11:30PM Apr 22, 2019Observed: -2.22 ft at 11:40PM Apr 22, 2019Observed: -2.25 ft at 11:50PM Apr 22, 2019Observed: -2.24 ft at 12:00AM Apr 23, 2019Observed: -2.16 ft at 3:10AM Apr 23, 2019Observed: -2.15 ft at 3:20AM Apr 23, 2019Observed: -2.18 ft at 3:30AM Apr 23, 2019Observed: -2.21 ft at 3:40AM Apr 23, 2019Observed: -2.21 ft at 3:50AM Apr 23, 2019Observed: -2.2 ft at 4:00AM Apr 23, 2019Observed: -2.21 ft at 4:10AM Apr 23, 2019Observed: -2.17 ft at 4:20AM Apr 23, 2019Observed: -2.15 ft at 4:30AM Apr 23, 2019Observed: -2.17 ft at 4:40AM Apr 23, 2019Observed: -2.16 ft at 4:50AM Apr 23, 2019Observed: -2.16 ft at 5:00AM Apr 23, 2019Observed: -2.16 ft at 5:10AM Apr 23, 2019Observed: -2.17 ft at 5:20AM Apr 23, 2019Observed: -2.19 ft at 5:30AM Apr 23, 2019Observed: -2.23 ft at 5:40AM Apr 23, 2019Observed: -2.25 ft at 5:50AM Apr 23, 2019Observed: -2.27 ft at 6:00AM Apr 23, 2019Observed: -2.27 ft at 6:10AM Apr 23, 2019Observed: -2.27 ft at 6:20AM Apr 23, 2019Observed: -2.28 ft at 6:30AM Apr 23, 2019Observed: -2.32 ft at 6:40AM Apr 23, 2019Observed: -2.35 ft at 6:50AM Apr 23, 2019Observed: -2.36 ft at 7:00AM Apr 23, 2019Observed: -2.36 ft at 7:10AM Apr 23, 2019Observed: -2.33 ft at 7:20AM Apr 23, 2019Observed: -2.31 ft at 7:30AM Apr 23, 2019Observed: -2.29 ft at 7:40AM Apr 23, 2019Observed: -2.32 ft at 7:50AM Apr 23, 2019Observed: -2.28 ft at 8:00AM Apr 23, 2019Observed: -2.28 ft at 8:10AM Apr 23, 2019Observed: -2.28 ft at 8:20AM Apr 23, 2019Observed: -2.24 ft at 8:30AM Apr 23, 2019Observed: -2.22 ft at 8:40AM Apr 23, 2019Observed: -2.21 ft at 8:50AM Apr 23, 2019Observed: -2.22 ft at 9:00AM Apr 23, 2019Observed: -2.24 ft at 9:10AM Apr 23, 2019Observed: -2.21 ft at 9:20AM Apr 23, 2019Observed: -2.22 ft at 9:30AM Apr 23, 2019Observed: -2.24 ft at 9:40AM Apr 23, 2019Observed: -2.28 ft at 9:50AM Apr 23, 2019Observed: -2.31 ft at 10:00AM Apr 23, 2019Observed: -2.31 ft at 10:10AM Apr 23, 2019Observed: -2.28 ft at 10:20AM Apr 23, 2019Observed: -2.25 ft at 10:30AM Apr 23, 2019Observed: -2.24 ft at 10:40AM Apr 23, 2019Observed: -2.27 ft at 10:50AM Apr 23, 2019Observed: -2.3 ft at 11:00AM Apr 23, 2019Observed: -2.29 ft at 11:10AM Apr 23, 2019Observed: -2.24 ft at 11:20AM Apr 23, 2019Observed: -2.2 ft at 11:30AM Apr 23, 2019Observed: -2.21 ft at 11:40AM Apr 23, 2019Observed: -2.27 ft at 11:50AM Apr 23, 2019Observed: -2.3 ft at 12:00PM Apr 23, 2019Observed: -2.32 ft at 12:10PM Apr 23, 2019Observed: -2.32 ft at 12:20PM Apr 23, 2019Observed: -2.3 ft at 12:30PM Apr 23, 2019Observed: -2.29 ft at 12:40PM Apr 23, 2019Observed: -2.27 ft at 12:50PM Apr 23, 2019Observed: -2.26 ft at 1:00PM Apr 23, 2019Observed: -2.27 ft at 1:10PM Apr 23, 2019Observed: -2.22 ft at 1:20PM Apr 23, 2019Observed: -2.24 ft at 1:30PM Apr 23, 2019Observed: -2.22 ft at 1:40PM Apr 23, 2019Observed: -2.21 ft at 1:50PM Apr 23, 2019Observed: -2.29 ft at 2:00PM Apr 23, 2019Observed: -2.26 ft at 2:10PM Apr 23, 2019Observed: -2.28 ft at 2:20PM Apr 23, 2019Observed: -2.31 ft at 2:30PM Apr 23, 2019Observed: -2.26 ft at 2:40PM Apr 23, 2019Observed: -2.25 ft at 2:50PM Apr 23, 2019Observed: -2.22 ft at 3:00PM Apr 23, 2019Observed: -2.17 ft at 3:10PM Apr 23, 2019Observed: -2.24 ft at 3:20PM Apr 23, 2019Observed: -2.23 ft at 3:30PM Apr 23, 2019Observed: -2.2 ft at 3:40PM Apr 23, 2019Observed: -2.19 ft at 3:50PM Apr 23, 2019Observed: -2.18 ft at 4:00PM Apr 23, 2019USGS--Water Resources of the United StatesNBGI2(plotting HGIRP) Graph Created (4:40PM Apr 23, 2019)ObservedLatest observed value: -2.18 ft at 4:00 PM CDT 23-Apr-2019. Flood Stage is 3 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
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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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
KML Image
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 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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