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Hydrograph River at a Glance Download
Rock River at Byron Stage (ft)Flow (kcfs)Observed: 7.65 ft at 12:00AM May 22, 2023Highest Observation: 7.67 ft at 12:15AM May 22, 2023Observed: 7.66 ft at 12:30AM May 22, 2023Observed: 7.66 ft at 12:45AM May 22, 2023Observed: 7.66 ft at 1:00AM May 22, 2023Observed: 7.65 ft at 1:15AM May 22, 2023Observed: 7.66 ft at 1:30AM May 22, 2023Observed: 7.66 ft at 1:45AM May 22, 2023Observed: 7.65 ft at 2:00AM May 22, 2023Observed: 7.66 ft at 2:15AM May 22, 2023Observed: 7.66 ft at 2:30AM May 22, 2023Observed: 7.65 ft at 2:45AM May 22, 2023Observed: 7.66 ft at 3:00AM May 22, 2023Observed: 7.65 ft at 3:15AM May 22, 2023Observed: 7.65 ft at 3:30AM May 22, 2023Observed: 7.65 ft at 3:45AM May 22, 2023Observed: 7.65 ft at 4:00AM May 22, 2023Observed: 7.65 ft at 4:15AM May 22, 2023Observed: 7.65 ft at 4:30AM May 22, 2023Observed: 7.65 ft at 4:45AM May 22, 2023Observed: 7.65 ft at 5:00AM May 22, 2023Observed: 7.65 ft at 5:15AM May 22, 2023Observed: 7.65 ft at 5:30AM May 22, 2023Observed: 7.65 ft at 5:45AM May 22, 2023Observed: 7.65 ft at 6:00AM May 22, 2023Observed: 7.65 ft at 6:15AM May 22, 2023Observed: 7.65 ft at 7:30AM May 22, 2023Observed: 7.64 ft at 7:45AM May 22, 2023Observed: 7.64 ft at 8:00AM May 22, 2023Observed: 7.64 ft at 8:15AM May 22, 2023Observed: 7.64 ft at 8:30AM May 22, 2023Observed: 7.64 ft at 8:45AM May 22, 2023Observed: 7.65 ft at 9:00AM May 22, 2023Observed: 7.64 ft at 9:15AM May 22, 2023Observed: 7.64 ft at 9:30AM May 22, 2023Observed: 7.63 ft at 9:45AM May 22, 2023Observed: 7.63 ft at 10:00AM May 22, 2023Observed: 7.63 ft at 10:15AM May 22, 2023Observed: 7.63 ft at 10:30AM May 22, 2023Observed: 7.63 ft at 10:45AM May 22, 2023Observed: 7.63 ft at 11:00AM May 22, 2023Observed: 7.63 ft at 11:15AM May 22, 2023Observed: 7.63 ft at 11:30AM May 22, 2023Observed: 7.62 ft at 11:45AM May 22, 2023Observed: 7.62 ft at 12:00PM May 22, 2023Observed: 7.62 ft at 12:15PM May 22, 2023Observed: 7.61 ft at 1:30PM May 22, 2023Observed: 7.61 ft at 1:45PM May 22, 2023Observed: 7.61 ft at 2:00PM May 22, 2023Observed: 7.61 ft at 2:15PM May 22, 2023Observed: 7.61 ft at 2:30PM May 22, 2023Observed: 7.59 ft at 2:45PM May 22, 2023Observed: 7.6 ft at 3:00PM May 22, 2023Observed: 7.59 ft at 3:15PM May 22, 2023Observed: 7.59 ft at 3:30PM May 22, 2023Observed: 7.58 ft at 3:45PM May 22, 2023Observed: 7.58 ft at 4:00PM May 22, 2023Observed: 7.58 ft at 4:15PM May 22, 2023Observed: 7.58 ft at 4:30PM May 22, 2023Observed: 7.58 ft at 4:45PM May 22, 2023Observed: 7.58 ft at 5:00PM May 22, 2023Observed: 7.58 ft at 5:15PM May 22, 2023Observed: 7.57 ft at 6:30PM May 22, 2023Observed: 7.57 ft at 6:45PM May 22, 2023Observed: 7.56 ft at 7:00PM May 22, 2023Observed: 7.56 ft at 7:15PM May 22, 2023Observed: 7.55 ft at 7:30PM May 22, 2023Observed: 7.54 ft at 7:45PM May 22, 2023Observed: 7.54 ft at 8:00PM May 22, 2023Observed: 7.53 ft at 8:15PM May 22, 2023Observed: 7.54 ft at 8:30PM May 22, 2023Observed: 7.52 ft at 8:45PM May 22, 2023Observed: 7.52 ft at 9:00PM May 22, 2023Observed: 7.51 ft at 9:15PM May 22, 2023Observed: 7.48 ft at 10:30PM May 22, 2023Observed: 7.49 ft at 10:45PM May 22, 2023Observed: 7.48 ft at 11:00PM May 22, 2023Observed: 7.48 ft at 11:15PM May 22, 2023Observed: 7.47 ft at 12:30AM May 23, 2023Observed: 7.46 ft at 12:45AM May 23, 2023Observed: 7.47 ft at 1:00AM May 23, 2023Observed: 7.46 ft at 1:15AM May 23, 2023Observed: 7.46 ft at 3:30AM May 23, 2023Observed: 7.47 ft at 3:45AM May 23, 2023Observed: 7.46 ft at 4:00AM May 23, 2023Observed: 7.46 ft at 4:15AM May 23, 2023Observed: 7.46 ft at 4:30AM May 23, 2023Observed: 7.47 ft at 4:45AM May 23, 2023Observed: 7.46 ft at 5:00AM May 23, 2023Observed: 7.47 ft at 5:15AM May 23, 2023Observed: 7.46 ft at 5:30AM May 23, 2023Observed: 7.47 ft at 5:45AM May 23, 2023Observed: 7.46 ft at 6:00AM May 23, 2023Observed: 7.46 ft at 6:15AM May 23, 2023Observed: 7.47 ft at 6:30AM May 23, 2023Observed: 7.46 ft at 6:45AM May 23, 2023Observed: 7.47 ft at 7:00AM May 23, 2023Observed: 7.47 ft at 7:15AM May 23, 2023Observed: 7.47 ft at 7:30AM May 23, 2023Observed: 7.47 ft at 7:45AM May 23, 2023Observed: 7.47 ft at 8:00AM May 23, 2023Observed: 7.47 ft at 8:15AM May 23, 2023Observed: 7.47 ft at 8:30AM May 23, 2023Observed: 7.46 ft at 8:45AM May 23, 2023Observed: 7.46 ft at 9:00AM May 23, 2023Observed: 7.46 ft at 9:15AM May 23, 2023Observed: 7.46 ft at 9:30AM May 23, 2023Observed: 7.47 ft at 9:45AM May 23, 2023Observed: 7.46 ft at 10:00AM May 23, 2023Observed: 7.46 ft at 10:15AM May 23, 2023Observed: 7.46 ft at 10:30AM May 23, 2023Observed: 7.46 ft at 10:45AM May 23, 2023Observed: 7.46 ft at 11:00AM May 23, 2023Observed: 7.46 ft at 11:15AM May 23, 2023Observed: 7.46 ft at 11:30AM May 23, 2023Observed: 7.45 ft at 11:45AM May 23, 2023Observed: 7.46 ft at 12:00PM May 23, 2023Observed: 7.46 ft at 12:15PM May 23, 2023Observed: 7.46 ft at 12:30PM May 23, 2023Observed: 7.45 ft at 12:45PM May 23, 2023Observed: 7.46 ft at 1:00PM May 23, 2023Observed: 7.45 ft at 1:15PM May 23, 2023Observed: 7.45 ft at 1:30PM May 23, 2023Observed: 7.45 ft at 1:45PM May 23, 2023Observed: 7.45 ft at 2:00PM May 23, 2023Observed: 7.45 ft at 2:15PM May 23, 2023Observed: 7.45 ft at 2:30PM May 23, 2023Observed: 7.44 ft at 2:45PM May 23, 2023Observed: 7.44 ft at 3:00PM May 23, 2023Observed: 7.44 ft at 3:15PM May 23, 2023Observed: 7.45 ft at 3:30PM May 23, 2023Observed: 7.44 ft at 3:45PM May 23, 2023Observed: 7.44 ft at 4:00PM May 23, 2023Observed: 7.43 ft at 4:15PM May 23, 2023Observed: 7.42 ft at 4:30PM May 23, 2023Observed: 7.42 ft at 4:45PM May 23, 2023Observed: 7.41 ft at 5:00PM May 23, 2023Observed: 7.39 ft at 5:15PM May 23, 2023Observed: 7.38 ft at 5:30PM May 23, 2023Observed: 7.37 ft at 5:45PM May 23, 2023Observed: 7.36 ft at 6:00PM May 23, 2023Observed: 7.35 ft at 6:15PM May 23, 2023Observed: 7.33 ft at 6:30PM May 23, 2023Observed: 7.32 ft at 6:45PM May 23, 2023Observed: 7.31 ft at 7:00PM May 23, 2023Observed: 7.3 ft at 7:15PM May 23, 2023Observed: 7.3 ft at 7:30PM May 23, 2023Observed: 7.29 ft at 7:45PM May 23, 2023Observed: 7.28 ft at 8:00PM May 23, 2023Observed: 7.28 ft at 8:15PM May 23, 2023Observed: 7.24 ft at 9:30PM May 23, 2023Observed: 7.25 ft at 9:45PM May 23, 2023Observed: 7.24 ft at 10:00PM May 23, 2023Observed: 7.25 ft at 10:15PM May 23, 2023Observed: 7.25 ft at 10:30PM May 23, 2023Observed: 7.24 ft at 10:45PM May 23, 2023Observed: 7.24 ft at 11:00PM May 23, 2023Observed: 7.25 ft at 11:15PM May 23, 2023Observed: 7.25 ft at 11:30PM May 23, 2023Observed: 7.26 ft at 11:45PM May 23, 2023Observed: 7.25 ft at 12:00AM May 24, 2023Observed: 7.26 ft at 12:15AM May 24, 2023Observed: 7.27 ft at 12:30AM May 24, 2023Observed: 7.27 ft at 12:45AM May 24, 2023Observed: 7.27 ft at 1:00AM May 24, 2023Observed: 7.28 ft at 1:15AM May 24, 2023Observed: 7.29 ft at 1:30AM May 24, 2023Observed: 7.29 ft at 1:45AM May 24, 2023Observed: 7.29 ft at 2:00AM May 24, 2023Observed: 7.29 ft at 2:15AM May 24, 2023Observed: 7.3 ft at 2:30AM May 24, 2023Observed: 7.3 ft at 2:45AM May 24, 2023Observed: 7.31 ft at 3:00AM May 24, 2023Observed: 7.31 ft at 3:15AM May 24, 2023Observed: 7.31 ft at 3:30AM May 24, 2023Observed: 7.32 ft at 3:45AM May 24, 2023Observed: 7.32 ft at 4:00AM May 24, 2023Observed: 7.32 ft at 4:15AM May 24, 2023Observed: 7.32 ft at 4:30AM May 24, 2023Observed: 7.33 ft at 4:45AM May 24, 2023Observed: 7.33 ft at 5:00AM May 24, 2023Observed: 7.33 ft at 5:15AM May 24, 2023Observed: 7.33 ft at 5:30AM May 24, 2023Observed: 7.34 ft at 5:45AM May 24, 2023Observed: 7.34 ft at 6:00AM May 24, 2023Observed: 7.33 ft at 6:15AM May 24, 2023Observed: 7.34 ft at 6:30AM May 24, 2023Observed: 7.35 ft at 6:45AM May 24, 2023Observed: 7.34 ft at 7:00AM May 24, 2023Observed: 7.35 ft at 7:15AM May 24, 2023Observed: 7.35 ft at 8:30AM May 24, 2023Observed: 7.34 ft at 8:45AM May 24, 2023Observed: 7.34 ft at 9:00AM May 24, 2023Observed: 7.35 ft at 9:15AM May 24, 2023Observed: 7.34 ft at 9:30AM May 24, 2023Observed: 7.34 ft at 9:45AM May 24, 2023Observed: 7.33 ft at 10:00AM May 24, 2023Observed: 7.33 ft at 10:15AM May 24, 2023Observed: 7.33 ft at 10:30AM May 24, 2023Observed: 7.33 ft at 10:45AM May 24, 2023Observed: 7.33 ft at 11:00AM May 24, 2023Observed: 7.33 ft at 11:15AM May 24, 2023Observed: 7.33 ft at 11:30AM May 24, 2023Observed: 7.33 ft at 11:45AM May 24, 2023Observed: 7.33 ft at 12:00PM May 24, 2023Observed: 7.32 ft at 12:15PM May 24, 2023Observed: 7.32 ft at 12:30PM May 24, 2023Observed: 7.32 ft at 12:45PM May 24, 2023Observed: 7.33 ft at 1:00PM May 24, 2023Observed: 7.33 ft at 1:15PM May 24, 2023Observed: 7.32 ft at 2:30PM May 24, 2023Observed: 7.32 ft at 2:45PM May 24, 2023Observed: 7.32 ft at 3:00PM May 24, 2023Observed: 7.33 ft at 3:15PM May 24, 2023Observed: 7.32 ft at 3:30PM May 24, 2023Observed: 7.32 ft at 3:45PM May 24, 2023Observed: 7.32 ft at 4:00PM May 24, 2023Observed: 7.32 ft at 4:15PM May 24, 2023Observed: 7.33 ft at 4:30PM May 24, 2023Observed: 7.31 ft at 4:45PM May 24, 2023Observed: 7.31 ft at 5:00PM May 24, 2023Observed: 7.32 ft at 5:15PM May 24, 2023Observed: 7.31 ft at 5:30PM May 24, 2023Observed: 7.31 ft at 5:45PM May 24, 2023Observed: 7.29 ft at 6:00PM May 24, 2023Observed: 7.29 ft at 6:15PM May 24, 2023Observed: 7.3 ft at 6:30PM May 24, 2023Observed: 7.29 ft at 6:45PM May 24, 2023Observed: 7.28 ft at 7:00PM May 24, 2023Observed: 7.29 ft at 7:15PM May 24, 2023Observed: 7.29 ft at 7:30PM May 24, 2023Observed: 7.29 ft at 7:45PM May 24, 2023Observed: 7.29 ft at 8:00PM May 24, 2023Observed: 7.29 ft at 8:15PM May 24, 2023Observed: 7.29 ft at 9:30PM May 24, 2023Observed: 7.29 ft at 9:45PM May 24, 2023Observed: 7.29 ft at 10:00PM May 24, 2023Observed: 7.29 ft at 10:15PM May 24, 2023Observed: 7.28 ft at 10:30PM May 24, 2023Observed: 7.28 ft at 10:45PM May 24, 2023Observed: 7.28 ft at 11:00PM May 24, 2023Observed: 7.27 ft at 11:15PM May 24, 2023Observed: 7.28 ft at 11:30PM May 24, 2023Observed: 7.27 ft at 11:45PM May 24, 2023Observed: 7.27 ft at 12:00AM May 25, 2023Observed: 7.26 ft at 12:15AM May 25, 2023Observed: 7.27 ft at 12:30AM May 25, 2023Observed: 7.26 ft at 12:45AM May 25, 2023Observed: 7.27 ft at 1:00AM May 25, 2023Observed: 7.27 ft at 1:15AM May 25, 2023Observed: 7.26 ft at 1:30AM May 25, 2023Observed: 7.26 ft at 1:45AM May 25, 2023Observed: 7.25 ft at 2:00AM May 25, 2023Observed: 7.26 ft at 2:15AM May 25, 2023Observed: 7.26 ft at 2:30AM May 25, 2023Observed: 7.25 ft at 2:45AM May 25, 2023Observed: 7.27 ft at 3:00AM May 25, 2023Observed: 7.25 ft at 3:15AM May 25, 2023Observed: 7.25 ft at 3:30AM May 25, 2023Observed: 7.25 ft at 3:45AM May 25, 2023Observed: 7.26 ft at 4:00AM May 25, 2023Observed: 7.26 ft at 4:15AM May 25, 2023Observed: 7.26 ft at 5:30AM May 25, 2023Observed: 7.26 ft at 5:45AM May 25, 2023Observed: 7.25 ft at 6:00AM May 25, 2023Observed: 7.24 ft at 6:15AM May 25, 2023Observed: 7.25 ft at 6:30AM May 25, 2023Observed: 7.25 ft at 6:45AM May 25, 2023Observed: 7.25 ft at 7:00AM May 25, 2023Observed: 7.25 ft at 7:15AM May 25, 2023Observed: 7.24 ft at 7:30AM May 25, 2023Observed: 7.24 ft at 7:45AM May 25, 2023Observed: 7.24 ft at 8:00AM May 25, 2023Observed: 7.24 ft at 8:15AM May 25, 2023Observed: 7.24 ft at 8:30AM May 25, 2023Observed: 7.25 ft at 8:45AM May 25, 2023Observed: 7.24 ft at 9:00AM May 25, 2023Observed: 7.24 ft at 9:15AM May 25, 2023Observed: 7.23 ft at 10:30AM May 25, 2023Observed: 7.23 ft at 10:45AM May 25, 2023Observed: 7.23 ft at 11:00AM May 25, 2023Observed: 7.22 ft at 11:15AM May 25, 2023Observed: 7.22 ft at 11:30AM May 25, 2023Observed: 7.22 ft at 11:45AM May 25, 2023Observed: 7.21 ft at 12:00PM May 25, 2023Observed: 7.21 ft at 12:15PM May 25, 2023Observed: 7.21 ft at 12:30PM May 25, 2023Observed: 7.2 ft at 12:45PM May 25, 2023Observed: 7.2 ft at 1:00PM May 25, 2023Observed: 7.19 ft at 1:15PM May 25, 2023Observed: 7.17 ft at 2:30PM May 25, 2023Observed: 7.16 ft at 2:45PM May 25, 2023Observed: 7.17 ft at 3:00PM May 25, 2023Observed: 7.17 ft at 3:15PM May 25, 2023Observed: 7.16 ft at 3:30PM May 25, 2023Observed: 7.15 ft at 3:45PM May 25, 2023Observed: 7.15 ft at 4:00PM May 25, 2023Observed: 7.15 ft at 4:15PM May 25, 2023Observed: 7.14 ft at 4:30PM May 25, 2023Observed: 7.14 ft at 4:45PM May 25, 2023Observed: 7.13 ft at 5:00PM May 25, 2023Observed: 7.13 ft at 5:15PM May 25, 2023Observed: 7.13 ft at 5:30PM May 25, 2023Observed: 7.12 ft at 5:45PM May 25, 2023Observed: 7.13 ft at 6:00PM May 25, 2023Observed: 7.12 ft at 6:15PM May 25, 2023Observed: 7.12 ft at 6:30PM May 25, 2023Observed: 7.11 ft at 6:45PM May 25, 2023Observed: 7.11 ft at 7:00PM May 25, 2023Observed: 7.1 ft at 7:15PM May 25, 2023Observed: 7.1 ft at 7:30PM May 25, 2023Observed: 7.1 ft at 7:45PM May 25, 2023Observed: 7.1 ft at 8:00PM May 25, 2023Observed: 7.1 ft at 8:15PM May 25, 2023Observed: 7.1 ft at 8:30PM May 25, 2023Observed: 7.1 ft at 8:45PM May 25, 2023Observed: 7.1 ft at 9:00PM May 25, 2023Observed: 7.1 ft at 9:15PM May 25, 2023Observed: 7.09 ft at 9:30PM May 25, 2023Observed: 7.1 ft at 9:45PM May 25, 2023Observed: 7.1 ft at 10:00PM May 25, 2023Observed: 7.09 ft at 10:15PM May 25, 2023Observed: 7.09 ft at 10:30PM May 25, 2023Observed: 7.08 ft at 10:45PM May 25, 2023Observed: 7.08 ft at 11:00PM May 25, 2023Observed: 7.08 ft at 11:15PM May 25, 2023Observed: 7.08 ft at 11:30PM May 25, 2023Observed: 7.08 ft at 11:45PM May 25, 2023Observed: 7.07 ft at 12:00AM May 26, 2023Observed: 7.07 ft at 12:15AM May 26, 2023Observed: 7.07 ft at 12:30AM May 26, 2023Observed: 7.06 ft at 12:45AM May 26, 2023Observed: 7.06 ft at 1:00AM May 26, 2023Observed: 7.06 ft at 1:15AM May 26, 2023Observed: 7.06 ft at 1:30AM May 26, 2023Observed: 7.05 ft at 1:45AM May 26, 2023Observed: 7.05 ft at 2:00AM May 26, 2023Observed: 7.05 ft at 2:15AM May 26, 2023Observed: 7.05 ft at 2:30AM May 26, 2023Observed: 7.04 ft at 2:45AM May 26, 2023Observed: 7.05 ft at 3:00AM May 26, 2023Observed: 7.04 ft at 3:15AM May 26, 2023Observed: 7.04 ft at 3:30AM May 26, 2023Observed: 7.04 ft at 3:45AM May 26, 2023Observed: 7.04 ft at 4:00AM May 26, 2023Observed: 7.04 ft at 4:15AM May 26, 2023Observed: 7.04 ft at 4:30AM May 26, 2023Observed: 7.04 ft at 4:45AM May 26, 2023Observed: 7.04 ft at 5:00AM May 26, 2023Observed: 7.03 ft at 5:15AM May 26, 2023Observed: 7.03 ft at 5:30AM May 26, 2023Observed: 7.03 ft at 5:45AM May 26, 2023Observed: 7.03 ft at 6:00AM May 26, 2023Observed: 7.02 ft at 6:15AM May 26, 2023Observed: 7.02 ft at 6:30AM May 26, 2023Observed: 7.02 ft at 6:45AM May 26, 2023Observed: 7.02 ft at 7:00AM May 26, 2023Observed: 7.02 ft at 7:15AM May 26, 2023Observed: 7.01 ft at 7:30AM May 26, 2023Observed: 7.01 ft at 7:45AM May 26, 2023Observed: 7 ft at 8:00AM May 26, 2023Observed: 7 ft at 8:15AM May 26, 2023Observed: 7 ft at 9:30AM May 26, 2023Observed: 6.99 ft at 9:45AM May 26, 2023Observed: 6.99 ft at 10:00AM May 26, 2023Observed: 7 ft at 10:15AM May 26, 2023Observed: 7 ft at 10:30AM May 26, 2023Observed: 6.99 ft at 10:45AM May 26, 2023Observed: 6.99 ft at 11:00AM May 26, 2023Observed: 6.99 ft at 11:15AM May 26, 2023Observed: 6.99 ft at 11:30AM May 26, 2023Observed: 6.99 ft at 11:45AM May 26, 2023Observed: 6.99 ft at 12:00PM May 26, 2023Observed: 6.99 ft at 12:15PM May 26, 2023Observed: 6.98 ft at 12:30PM May 26, 2023Observed: 6.98 ft at 12:45PM May 26, 2023Observed: 6.98 ft at 1:00PM May 26, 2023Observed: 6.97 ft at 1:15PM May 26, 2023Observed: 6.98 ft at 1:30PM May 26, 2023Observed: 6.98 ft at 1:45PM May 26, 2023Observed: 6.98 ft at 2:00PM May 26, 2023Observed: 6.98 ft at 2:15PM May 26, 2023Observed: 6.97 ft at 2:30PM May 26, 2023Observed: 6.98 ft at 2:45PM May 26, 2023Observed: 6.97 ft at 3:00PM May 26, 2023Observed: 6.97 ft at 3:15PM May 26, 2023Observed: 6.97 ft at 3:30PM May 26, 2023Observed: 6.97 ft at 3:45PM May 26, 2023Observed: 6.96 ft at 4:00PM May 26, 2023Observed: 6.97 ft at 4:15PM May 26, 2023Observed: 6.96 ft at 5:30PM May 26, 2023Observed: 6.96 ft at 5:45PM May 26, 2023Observed: 6.95 ft at 6:00PM May 26, 2023Observed: 6.96 ft at 6:15PM May 26, 2023Observed: 6.96 ft at 6:30PM May 26, 2023Observed: 6.95 ft at 6:45PM May 26, 2023Observed: 6.95 ft at 7:00PM May 26, 2023Observed: 6.96 ft at 7:15PM May 26, 2023Observed: 6.95 ft at 7:30PM May 26, 2023Observed: 6.95 ft at 7:45PM May 26, 2023Observed: 6.95 ft at 8:00PM May 26, 2023Observed: 6.92 ft at 8:15PM May 26, 2023Observed: 6.94 ft at 8:30PM May 26, 2023Observed: 6.95 ft at 8:45PM May 26, 2023Observed: 6.95 ft at 9:00PM May 26, 2023Observed: 6.94 ft at 9:15PM May 26, 2023Observed: 6.95 ft at 9:30PM May 26, 2023Observed: 6.94 ft at 9:45PM May 26, 2023Observed: 6.94 ft at 10:00PM May 26, 2023Observed: 6.94 ft at 10:15PM May 26, 2023Observed: 6.93 ft at 11:30PM May 26, 2023Observed: 6.93 ft at 11:45PM May 26, 2023Observed: 6.92 ft at 12:00AM May 27, 2023Observed: 6.93 ft at 12:15AM May 27, 2023Observed: 6.92 ft at 12:30AM May 27, 2023Observed: 6.92 ft at 12:45AM May 27, 2023Observed: 6.92 ft at 1:00AM May 27, 2023Observed: 6.93 ft at 1:15AM May 27, 2023Observed: 6.92 ft at 1:30AM May 27, 2023Observed: 6.92 ft at 1:45AM May 27, 2023Observed: 6.91 ft at 2:00AM May 27, 2023Observed: 6.92 ft at 2:15AM May 27, 2023Observed: 6.92 ft at 2:30AM May 27, 2023Observed: 6.92 ft at 2:45AM May 27, 2023Observed: 6.91 ft at 3:00AM May 27, 2023Observed: 6.92 ft at 3:15AM May 27, 2023Observed: 6.92 ft at 3:30AM May 27, 2023Observed: 6.92 ft at 3:45AM May 27, 2023Observed: 6.92 ft at 4:00AM May 27, 2023Observed: 6.92 ft at 4:15AM May 27, 2023Observed: 6.92 ft at 4:30AM May 27, 2023Observed: 6.92 ft at 4:45AM May 27, 2023Observed: 6.92 ft at 5:00AM May 27, 2023Observed: 6.91 ft at 5:15AM May 27, 2023Observed: 6.92 ft at 5:30AM May 27, 2023Observed: 6.92 ft at 5:45AM May 27, 2023Observed: 6.91 ft at 6:00AM May 27, 2023Observed: 6.92 ft at 6:15AM May 27, 2023Observed: 6.92 ft at 6:30AM May 27, 2023Observed: 6.91 ft at 6:45AM May 27, 2023Observed: 6.92 ft at 7:00AM May 27, 2023Observed: 6.91 ft at 7:15AM May 27, 2023Observed: 6.9 ft at 7:30AM May 27, 2023Observed: 6.9 ft at 7:45AM May 27, 2023Observed: 6.9 ft at 8:00AM May 27, 2023Observed: 6.9 ft at 8:15AM May 27, 2023Observed: 6.9 ft at 8:30AM May 27, 2023Observed: 6.9 ft at 8:45AM May 27, 2023Observed: 6.9 ft at 9:00AM May 27, 2023Observed: 6.9 ft at 9:15AM May 27, 2023Observed: 6.89 ft at 9:30AM May 27, 2023Observed: 6.89 ft at 9:45AM May 27, 2023Observed: 6.89 ft at 10:00AM May 27, 2023Observed: 6.89 ft at 10:15AM May 27, 2023Observed: 6.88 ft at 10:30AM May 27, 2023Observed: 6.88 ft at 10:45AM May 27, 2023Observed: 6.88 ft at 11:00AM May 27, 2023Observed: 6.89 ft at 11:15AM May 27, 2023Observed: 6.86 ft at 11:30AM May 27, 2023Observed: 6.87 ft at 11:45AM May 27, 2023Observed: 6.87 ft at 12:00PM May 27, 2023Observed: 6.87 ft at 12:15PM May 27, 2023Observed: 6.86 ft at 12:30PM May 27, 2023Observed: 6.86 ft at 12:45PM May 27, 2023Observed: 6.84 ft at 1:00PM May 27, 2023Observed: 6.86 ft at 1:15PM May 27, 2023Observed: 6.86 ft at 1:30PM May 27, 2023Observed: 6.85 ft at 1:45PM May 27, 2023Observed: 6.84 ft at 2:00PM May 27, 2023Observed: 6.85 ft at 2:15PM May 27, 2023Observed: 6.85 ft at 2:30PM May 27, 2023Observed: 6.85 ft at 2:45PM May 27, 2023Observed: 6.84 ft at 3:00PM May 27, 2023Observed: 6.85 ft at 3:15PM May 27, 2023Observed: 6.85 ft at 3:30PM May 27, 2023Observed: 6.84 ft at 3:45PM May 27, 2023Observed: 6.84 ft at 4:00PM May 27, 2023Observed: 6.84 ft at 4:15PM May 27, 2023Observed: 6.84 ft at 4:30PM May 27, 2023Observed: 6.84 ft at 4:45PM May 27, 2023Observed: 6.83 ft at 5:00PM May 27, 2023Observed: 6.83 ft at 5:15PM May 27, 2023Observed: 6.83 ft at 5:30PM May 27, 2023Observed: 6.82 ft at 5:45PM May 27, 2023Observed: 6.82 ft at 6:00PM May 27, 2023Observed: 6.82 ft at 6:15PM May 27, 2023Observed: 6.82 ft at 6:30PM May 27, 2023Observed: 6.82 ft at 6:45PM May 27, 2023Observed: 6.82 ft at 7:00PM May 27, 2023Observed: 6.82 ft at 7:15PM May 27, 2023Observed: 6.81 ft at 7:30PM May 27, 2023Observed: 6.81 ft at 7:45PM May 27, 2023Observed: 6.81 ft at 8:00PM May 27, 2023Observed: 6.81 ft at 8:15PM May 27, 2023Observed: 6.81 ft at 8:30PM May 27, 2023Observed: 6.81 ft at 8:45PM May 27, 2023Observed: 6.81 ft at 9:00PM May 27, 2023Observed: 6.8 ft at 9:15PM May 27, 2023Observed: 6.81 ft at 9:30PM May 27, 2023Observed: 6.8 ft at 9:45PM May 27, 2023Observed: 6.8 ft at 10:00PM May 27, 2023Observed: 6.8 ft at 10:15PM May 27, 2023Observed: 6.8 ft at 10:30PM May 27, 2023Observed: 6.8 ft at 10:45PM May 27, 2023Observed: 6.79 ft at 11:00PM May 27, 2023Observed: 6.79 ft at 11:15PM May 27, 2023Observed: 6.79 ft at 12:30AM May 28, 2023Observed: 6.79 ft at 12:45AM May 28, 2023Observed: 6.78 ft at 1:00AM May 28, 2023Observed: 6.78 ft at 1:15AM May 28, 2023Observed: 6.79 ft at 1:30AM May 28, 2023Observed: 6.79 ft at 1:45AM May 28, 2023Observed: 6.79 ft at 2:00AM May 28, 2023Observed: 6.78 ft at 2:15AM May 28, 2023Observed: 6.78 ft at 2:30AM May 28, 2023Observed: 6.78 ft at 2:45AM May 28, 2023Observed: 6.78 ft at 3:00AM May 28, 2023Observed: 6.78 ft at 3:15AM May 28, 2023Observed: 6.78 ft at 3:30AM May 28, 2023Observed: 6.78 ft at 3:45AM May 28, 2023Observed: 6.78 ft at 4:00AM May 28, 2023Observed: 6.79 ft at 4:15AM May 28, 2023Observed: 6.78 ft at 4:30AM May 28, 2023Observed: 6.78 ft at 4:45AM May 28, 2023Observed: 6.78 ft at 5:00AM May 28, 2023Observed: 6.78 ft at 5:15AM May 28, 2023Observed: 6.78 ft at 5:30AM May 28, 2023Observed: 6.78 ft at 5:45AM May 28, 2023Observed: 6.79 ft at 6:00AM May 28, 2023Observed: 6.78 ft at 6:15AM May 28, 2023Observed: 6.78 ft at 6:30AM May 28, 2023Observed: 6.78 ft at 6:45AM May 28, 2023Observed: 6.78 ft at 7:00AM May 28, 2023Observed: 6.78 ft at 7:15AM May 28, 2023Observed: 6.78 ft at 7:30AM May 28, 2023Observed: 6.78 ft at 7:45AM May 28, 2023Observed: 6.77 ft at 8:00AM May 28, 2023Observed: 6.77 ft at 8:15AM May 28, 2023Observed: 6.77 ft at 8:30AM May 28, 2023Observed: 6.77 ft at 8:45AM May 28, 2023Observed: 6.77 ft at 9:00AM May 28, 2023Observed: 6.77 ft at 9:15AM May 28, 2023Observed: 6.76 ft at 9:30AM May 28, 2023Observed: 6.76 ft at 9:45AM May 28, 2023Observed: 6.76 ft at 10:00AM May 28, 2023Observed: 6.75 ft at 10:15AM May 28, 2023Observed: 6.76 ft at 10:30AM May 28, 2023Observed: 6.76 ft at 10:45AM May 28, 2023Observed: 6.75 ft at 11:00AM May 28, 2023Observed: 6.75 ft at 11:15AM May 28, 2023Observed: 6.75 ft at 11:30AM May 28, 2023Observed: 6.69 ft at 11:45AM May 28, 2023Observed: 6.73 ft at 12:00PM May 28, 2023Observed: 6.74 ft at 12:15PM May 28, 2023Observed: 6.73 ft at 12:30PM May 28, 2023Observed: 6.74 ft at 12:45PM May 28, 2023Observed: 6.73 ft at 1:00PM May 28, 2023Observed: 6.73 ft at 1:15PM May 28, 2023Observed: 6.73 ft at 1:30PM May 28, 2023Observed: 6.73 ft at 1:45PM May 28, 2023Observed: 6.72 ft at 2:00PM May 28, 2023Observed: 6.73 ft at 2:15PM May 28, 2023Observed: 6.71 ft at 2:30PM May 28, 2023Observed: 6.73 ft at 2:45PM May 28, 2023Observed: 6.71 ft at 3:00PM May 28, 2023Observed: 6.73 ft at 3:15PM May 28, 2023Observed: 6.72 ft at 3:30PM May 28, 2023Observed: 6.71 ft at 3:45PM May 28, 2023Observed: 6.71 ft at 4:00PM May 28, 2023Observed: 6.71 ft at 4:15PM May 28, 2023Observed: 6.72 ft at 4:30PM May 28, 2023Observed: 6.72 ft at 4:45PM May 28, 2023Observed: 6.7 ft at 5:00PM May 28, 2023Observed: 6.71 ft at 5:15PM May 28, 2023Observed: 6.69 ft at 5:30PM May 28, 2023Observed: 6.7 ft at 5:45PM May 28, 2023Observed: 6.7 ft at 6:00PM May 28, 2023Observed: 6.7 ft at 6:15PM May 28, 2023Observed: 6.68 ft at 6:30PM May 28, 2023Observed: 6.7 ft at 6:45PM May 28, 2023Observed: 6.7 ft at 7:00PM May 28, 2023Observed: 6.7 ft at 7:15PM May 28, 2023Observed: 6.65 ft at 7:30PM May 28, 2023Observed: 6.69 ft at 7:45PM May 28, 2023Observed: 6.69 ft at 8:00PM May 28, 2023Observed: 6.69 ft at 8:15PM May 28, 2023Observed: 6.68 ft at 8:30PM May 28, 2023Observed: 6.69 ft at 8:45PM May 28, 2023Observed: 6.68 ft at 9:00PM May 28, 2023Observed: 6.68 ft at 9:15PM May 28, 2023Observed: 6.67 ft at 10:30PM May 28, 2023Observed: 6.67 ft at 10:45PM May 28, 2023Observed: 6.67 ft at 11:00PM May 28, 2023Observed: 6.66 ft at 11:15PM May 28, 2023USGS--Water Resources of the United StatesBYRI2(plotting HGIRG) Graph Created (11:55PM May 28, 2023)ObservedLatest observed value: 6.66 ft at 11:15 PM CDT 28-May-2023. Flood Stage is 13 ft
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Tabular Data (UTC)
Tabular Data (CDT)
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Datum: NAVD88
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 Rock River at Byron are issued as needed during times of high water, but are not routinely available.

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Upstream Locations Upstream Gauge Downstream Gauge Downstream Gauge - at Dixon
Flood Categories (in feet)
Major Flood Stage: 16
Moderate Flood Stage: 14
Flood Stage: 13
Action Stage: 10.5
Low Stage (in feet): 4

Historic Crests
(1) 17.80 ft on 04/20/1973
(2) 17.08 ft on 04/20/2013
(3) 16.64 ft on 03/16/2019
(4) 16.50 ft on 07/25/2010
(5) 16.12 ft on 06/14/2000
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.11 ft on 05/18/2020
(2) 13.06 ft on 03/29/2020
(3) 14.42 ft on 10/04/2019
(4) 13.53 ft on 09/15/2019
(5) 13.00 ft on 05/31/2019
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 4.33 ft on 09/09/2003
(2) 4.36 ft on 09/21/2012
(3) 4.44 ft on 10/16/2005

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:15
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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
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17 Water threatens structures at the water treatment plant in Byron.
16.5 Numerous residences are threatened between IL-2 and the river just northeast of Byron. River Road is threatened near the river just south of Byron.
16 The MercyHealth Clinic is threatened along Kysor Drive in Byron.
15.5 Water threatens lower sections of the water treatment plant property in Byron. Water threatens IL-2 west of Byron.
13.5 Numerous low-lying structures downstream of Byron are flooded.
13 Low-lying structures downstream of Byron are threatened.
12 Water inundates yards of several houses along River Road near Byron. Low-lying portions of Hamas Park and Sunshine Park are inundated.
10.5 Water begins to affect low-lying areas along the river near Byron.
Low Water Impacts Collapse
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4.0 Approximate stage of the 1-in-10 annual chance flow (7-day average).
About This Location Collapse

Latitude: 42.123056° N, Longitude: 89.255833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 13 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 666.0 679.0 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 Not Available Not Available  

Current/Historical Observations:
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How much forecast precipitation was used for the current river forecast?
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
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Romeoville, IL 60446
(815) 834-1435
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