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Hydrograph River at a Glance Download Inundation
Mapping
Illinois River at Ottawa Stage (ft)Observed: 459.48 ft at 7:15PM Apr 13, 2018Observed: 459.62 ft at 7:30PM Apr 13, 2018Observed: 459.51 ft at 7:45PM Apr 13, 2018Observed: 459.51 ft at 8:00PM Apr 13, 2018Observed: 459.49 ft at 8:15PM Apr 13, 2018Observed: 459.48 ft at 8:30PM Apr 13, 2018Observed: 459.5 ft at 8:45PM Apr 13, 2018Observed: 459.49 ft at 9:00PM Apr 13, 2018Observed: 459.5 ft at 9:15PM Apr 13, 2018Observed: 459.5 ft at 9:30PM Apr 13, 2018Observed: 459.49 ft at 9:45PM Apr 13, 2018Observed: 459.48 ft at 10:00PM Apr 13, 2018Observed: 459.47 ft at 10:15PM Apr 13, 2018Observed: 459.48 ft at 10:30PM Apr 13, 2018Observed: 459.48 ft at 10:45PM Apr 13, 2018Observed: 459.47 ft at 11:00PM Apr 13, 2018Observed: 459.47 ft at 11:15PM Apr 13, 2018Observed: 459.46 ft at 11:30PM Apr 13, 2018Observed: 459.45 ft at 11:45PM Apr 13, 2018Observed: 459.44 ft at 12:00AM Apr 14, 2018Observed: 459.46 ft at 12:15AM Apr 14, 2018Observed: 459.44 ft at 12:30AM Apr 14, 2018Observed: 459.43 ft at 12:45AM Apr 14, 2018Observed: 459.41 ft at 1:00AM Apr 14, 2018Observed: 459.39 ft at 1:15AM Apr 14, 2018Observed: 459.38 ft at 1:30AM Apr 14, 2018Observed: 459.36 ft at 1:45AM Apr 14, 2018Observed: 459.38 ft at 2:00AM Apr 14, 2018Observed: 459.36 ft at 2:15AM Apr 14, 2018Observed: 459.35 ft at 2:30AM Apr 14, 2018Observed: 459.35 ft at 2:45AM Apr 14, 2018Observed: 459.33 ft at 3:00AM Apr 14, 2018Observed: 459.32 ft at 3:15AM Apr 14, 2018Observed: 459.32 ft at 3:30AM Apr 14, 2018Observed: 459.32 ft at 3:45AM Apr 14, 2018Observed: 459.32 ft at 4:00AM Apr 14, 2018Observed: 459.31 ft at 4:15AM Apr 14, 2018Observed: 459.3 ft at 4:30AM Apr 14, 2018Observed: 459.29 ft at 4:45AM Apr 14, 2018Observed: 459.28 ft at 5:00AM Apr 14, 2018Observed: 459.28 ft at 5:15AM Apr 14, 2018Observed: 459.28 ft at 5:30AM Apr 14, 2018Observed: 459.27 ft at 5:45AM Apr 14, 2018Observed: 459.28 ft at 6:00AM Apr 14, 2018Observed: 459.3 ft at 6:15AM Apr 14, 2018Observed: 459.36 ft at 6:30AM Apr 14, 2018Observed: 459.34 ft at 6:45AM Apr 14, 2018Observed: 459.34 ft at 7:00AM Apr 14, 2018Observed: 459.35 ft at 7:15AM Apr 14, 2018Observed: 459.33 ft at 7:30AM Apr 14, 2018Observed: 459.32 ft at 7:45AM Apr 14, 2018Observed: 459.35 ft at 8:00AM Apr 14, 2018Observed: 459.41 ft at 8:15AM Apr 14, 2018Observed: 459.4 ft at 8:30AM Apr 14, 2018Observed: 459.41 ft at 8:45AM Apr 14, 2018Observed: 459.41 ft at 9:00AM Apr 14, 2018Observed: 459.41 ft at 9:15AM Apr 14, 2018Observed: 459.42 ft at 9:30AM Apr 14, 2018Observed: 459.51 ft at 9:45AM Apr 14, 2018Observed: 459.51 ft at 10:00AM Apr 14, 2018Observed: 459.51 ft at 10:15AM Apr 14, 2018Observed: 459.51 ft at 10:30AM Apr 14, 2018Observed: 459.51 ft at 10:45AM Apr 14, 2018Observed: 459.59 ft at 11:00AM Apr 14, 2018Observed: 459.58 ft at 11:15AM Apr 14, 2018Observed: 459.58 ft at 11:30AM Apr 14, 2018Observed: 459.59 ft at 11:45AM Apr 14, 2018Observed: 459.58 ft at 12:00PM Apr 14, 2018Observed: 459.57 ft at 12:15PM Apr 14, 2018Observed: 459.58 ft at 12:30PM Apr 14, 2018Observed: 459.57 ft at 12:45PM Apr 14, 2018Observed: 459.57 ft at 1:00PM Apr 14, 2018Observed: 459.58 ft at 1:15PM Apr 14, 2018Observed: 459.58 ft at 1:30PM Apr 14, 2018Observed: 459.59 ft at 1:45PM Apr 14, 2018Observed: 459.6 ft at 2:00PM Apr 14, 2018Observed: 459.58 ft at 2:15PM Apr 14, 2018Observed: 459.56 ft at 2:30PM Apr 14, 2018Observed: 459.58 ft at 2:45PM Apr 14, 2018Observed: 459.52 ft at 3:00PM Apr 14, 2018Observed: 459.51 ft at 3:15PM Apr 14, 2018Observed: 459.51 ft at 3:30PM Apr 14, 2018Observed: 459.51 ft at 3:45PM Apr 14, 2018Observed: 459.5 ft at 4:00PM Apr 14, 2018Observed: 459.49 ft at 4:15PM Apr 14, 2018Observed: 459.43 ft at 4:30PM Apr 14, 2018Observed: 459.43 ft at 4:45PM Apr 14, 2018Observed: 459.43 ft at 5:00PM Apr 14, 2018Observed: 459.42 ft at 5:15PM Apr 14, 2018Observed: 459.41 ft at 5:30PM Apr 14, 2018Observed: 459.38 ft at 5:45PM Apr 14, 2018Observed: 459.37 ft at 6:00PM Apr 14, 2018Observed: 459.37 ft at 6:15PM Apr 14, 2018Observed: 459.37 ft at 6:30PM Apr 14, 2018Observed: 459.36 ft at 6:45PM Apr 14, 2018Observed: 459.36 ft at 7:00PM Apr 14, 2018Observed: 459.47 ft at 7:15PM Apr 14, 2018Observed: 459.4 ft at 7:30PM Apr 14, 2018Observed: 459.4 ft at 7:45PM Apr 14, 2018Observed: 459.4 ft at 8:00PM Apr 14, 2018Observed: 459.42 ft at 8:15PM Apr 14, 2018Observed: 459.45 ft at 8:30PM Apr 14, 2018Observed: 459.46 ft at 8:45PM Apr 14, 2018Observed: 459.48 ft at 9:00PM Apr 14, 2018Observed: 459.5 ft at 9:15PM Apr 14, 2018Observed: 459.58 ft at 9:30PM Apr 14, 2018Observed: 459.59 ft at 9:45PM Apr 14, 2018Observed: 459.69 ft at 10:00PM Apr 14, 2018Observed: 459.63 ft at 10:15PM Apr 14, 2018Observed: 459.64 ft at 10:30PM Apr 14, 2018Observed: 459.65 ft at 10:45PM Apr 14, 2018Observed: 459.66 ft at 11:00PM Apr 14, 2018Observed: 459.66 ft at 11:15PM Apr 14, 2018Observed: 459.68 ft at 11:30PM Apr 14, 2018Observed: 459.66 ft at 11:45PM Apr 14, 2018Observed: 459.67 ft at 12:00AM Apr 15, 2018Observed: 459.67 ft at 12:15AM Apr 15, 2018Observed: 459.67 ft at 12:30AM Apr 15, 2018Observed: 459.67 ft at 12:45AM Apr 15, 2018Observed: 459.68 ft at 1:00AM Apr 15, 2018Observed: 459.67 ft at 1:15AM Apr 15, 2018Observed: 459.56 ft at 1:30AM Apr 15, 2018Observed: 459.63 ft at 1:45AM Apr 15, 2018Observed: 459.65 ft at 2:00AM Apr 15, 2018Observed: 459.64 ft at 2:15AM Apr 15, 2018Observed: 459.66 ft at 2:30AM Apr 15, 2018Observed: 459.64 ft at 2:45AM Apr 15, 2018Observed: 459.63 ft at 3:00AM Apr 15, 2018Observed: 459.62 ft at 3:15AM Apr 15, 2018Observed: 459.6 ft at 3:30AM Apr 15, 2018Observed: 459.58 ft at 3:45AM Apr 15, 2018Observed: 459.59 ft at 4:00AM Apr 15, 2018Observed: 459.59 ft at 4:15AM Apr 15, 2018Observed: 459.59 ft at 4:30AM Apr 15, 2018Observed: 459.6 ft at 4:45AM Apr 15, 2018Observed: 459.62 ft at 5:00AM Apr 15, 2018Observed: 459.69 ft at 5:15AM Apr 15, 2018Observed: 459.63 ft at 5:30AM Apr 15, 2018Observed: 459.64 ft at 5:45AM Apr 15, 2018Observed: 459.65 ft at 6:00AM Apr 15, 2018Observed: 459.65 ft at 6:15AM Apr 15, 2018Observed: 459.65 ft at 6:30AM Apr 15, 2018Observed: 459.66 ft at 6:45AM Apr 15, 2018Observed: 459.65 ft at 7:00AM Apr 15, 2018Observed: 459.65 ft at 7:15AM Apr 15, 2018Observed: 459.65 ft at 7:30AM Apr 15, 2018Observed: 459.65 ft at 7:45AM Apr 15, 2018Observed: 459.66 ft at 8:00AM Apr 15, 2018Observed: 459.64 ft at 8:15AM Apr 15, 2018Observed: 459.63 ft at 8:30AM Apr 15, 2018Observed: 459.64 ft at 8:45AM Apr 15, 2018Observed: 459.65 ft at 9:00AM Apr 15, 2018Observed: 459.73 ft at 9:15AM Apr 15, 2018Observed: 459.72 ft at 9:30AM Apr 15, 2018Observed: 459.72 ft at 9:45AM Apr 15, 2018Observed: 459.73 ft at 10:00AM Apr 15, 2018Observed: 459.73 ft at 10:15AM Apr 15, 2018Observed: 459.74 ft at 10:30AM Apr 15, 2018Observed: 459.74 ft at 10:45AM Apr 15, 2018Observed: 459.74 ft at 11:00AM Apr 15, 2018Observed: 459.74 ft at 11:15AM Apr 15, 2018Observed: 459.74 ft at 11:30AM Apr 15, 2018Observed: 459.75 ft at 11:45AM Apr 15, 2018Observed: 459.76 ft at 12:00PM Apr 15, 2018Observed: 459.76 ft at 12:15PM Apr 15, 2018Observed: 459.84 ft at 12:30PM Apr 15, 2018Observed: 459.82 ft at 12:45PM Apr 15, 2018Observed: 459.83 ft at 1:00PM Apr 15, 2018Observed: 459.83 ft at 1:15PM Apr 15, 2018Observed: 459.85 ft at 1:30PM Apr 15, 2018Observed: 459.86 ft at 1:45PM Apr 15, 2018Observed: 459.91 ft at 2:00PM Apr 15, 2018Observed: 459.93 ft at 2:15PM Apr 15, 2018Observed: 459.71 ft at 2:30PM Apr 15, 2018Observed: 459.88 ft at 2:45PM Apr 15, 2018Observed: 459.9 ft at 3:00PM Apr 15, 2018Observed: 459.98 ft at 3:15PM Apr 15, 2018Observed: 459.99 ft at 3:30PM Apr 15, 2018Observed: 460.07 ft at 3:45PM Apr 15, 2018Observed: 460.08 ft at 4:00PM Apr 15, 2018Observed: 460.06 ft at 4:15PM Apr 15, 2018Observed: 460.04 ft at 4:30PM Apr 15, 2018Observed: 460.04 ft at 4:45PM Apr 15, 2018Observed: 460.05 ft at 5:00PM Apr 15, 2018Observed: 460.07 ft at 5:15PM Apr 15, 2018Observed: 460.15 ft at 5:30PM Apr 15, 2018Observed: 460.15 ft at 5:45PM Apr 15, 2018Observed: 460.15 ft at 6:00PM Apr 15, 2018Observed: 460.14 ft at 6:15PM Apr 15, 2018Observed: 460.15 ft at 6:30PM Apr 15, 2018Observed: 460.16 ft at 6:45PM Apr 15, 2018Observed: 460.26 ft at 7:00PM Apr 15, 2018Observed: 460.26 ft at 7:15PM Apr 15, 2018Observed: 460.26 ft at 7:30PM Apr 15, 2018Observed: 460.27 ft at 7:45PM Apr 15, 2018Observed: 460.28 ft at 8:00PM Apr 15, 2018Observed: 460.29 ft at 8:15PM Apr 15, 2018Observed: 460.3 ft at 8:30PM Apr 15, 2018Observed: 460.31 ft at 8:45PM Apr 15, 2018Observed: 460.33 ft at 9:00PM Apr 15, 2018Observed: 460.34 ft at 9:15PM Apr 15, 2018Observed: 460.37 ft at 9:30PM Apr 15, 2018Observed: 460.39 ft at 9:45PM Apr 15, 2018Observed: 460.4 ft at 10:00PM Apr 15, 2018Observed: 460.41 ft at 10:15PM Apr 15, 2018Observed: 460.43 ft at 10:30PM Apr 15, 2018Observed: 460.45 ft at 10:45PM Apr 15, 2018Observed: 460.46 ft at 11:00PM Apr 15, 2018Observed: 460.47 ft at 11:15PM Apr 15, 2018Observed: 460.47 ft at 11:30PM Apr 15, 2018Observed: 460.56 ft at 11:45PM Apr 15, 2018Observed: 460.45 ft at 12:00AM Apr 16, 2018Observed: 460.47 ft at 12:15AM Apr 16, 2018Observed: 460.49 ft at 12:30AM Apr 16, 2018Observed: 460.49 ft at 12:45AM Apr 16, 2018Observed: 460.49 ft at 1:00AM Apr 16, 2018Observed: 460.5 ft at 1:15AM Apr 16, 2018Observed: 460.49 ft at 1:30AM Apr 16, 2018Observed: 460.51 ft at 1:45AM Apr 16, 2018Observed: 460.51 ft at 2:00AM Apr 16, 2018Observed: 460.53 ft at 2:15AM Apr 16, 2018Observed: 460.55 ft at 2:30AM Apr 16, 2018Observed: 460.61 ft at 2:45AM Apr 16, 2018Observed: 460.62 ft at 3:00AM Apr 16, 2018Observed: 460.63 ft at 3:15AM Apr 16, 2018Observed: 460.65 ft at 3:30AM Apr 16, 2018Observed: 460.67 ft at 3:45AM Apr 16, 2018Observed: 460.69 ft at 4:00AM Apr 16, 2018Observed: 460.7 ft at 4:15AM Apr 16, 2018Observed: 460.81 ft at 4:30AM Apr 16, 2018Observed: 460.8 ft at 4:45AM Apr 16, 2018Observed: 460.78 ft at 5:00AM Apr 16, 2018Observed: 460.77 ft at 5:15AM Apr 16, 2018Observed: 460.76 ft at 5:30AM Apr 16, 2018Observed: 460.75 ft at 5:45AM Apr 16, 2018Observed: 460.74 ft at 6:00AM Apr 16, 2018Observed: 460.72 ft at 6:15AM Apr 16, 2018Observed: 460.72 ft at 6:30AM Apr 16, 2018Observed: 460.71 ft at 6:45AM Apr 16, 2018Observed: 460.71 ft at 7:00AM Apr 16, 2018Observed: 460.7 ft at 7:15AM Apr 16, 2018Observed: 460.7 ft at 7:30AM Apr 16, 2018Observed: 460.69 ft at 7:45AM Apr 16, 2018Observed: 460.68 ft at 8:00AM Apr 16, 2018Observed: 460.67 ft at 8:15AM Apr 16, 2018Observed: 460.67 ft at 8:30AM Apr 16, 2018Observed: 460.74 ft at 8:45AM Apr 16, 2018Observed: 460.73 ft at 9:00AM Apr 16, 2018Observed: 460.72 ft at 9:15AM Apr 16, 2018Observed: 460.71 ft at 9:30AM Apr 16, 2018Observed: 460.71 ft at 9:45AM Apr 16, 2018Observed: 460.72 ft at 10:00AM Apr 16, 2018Observed: 460.72 ft at 10:15AM Apr 16, 2018Observed: 460.73 ft at 10:30AM Apr 16, 2018Observed: 460.73 ft at 10:45AM Apr 16, 2018Observed: 460.74 ft at 11:00AM Apr 16, 2018Observed: 460.76 ft at 11:15AM Apr 16, 2018Observed: 460.76 ft at 11:30AM Apr 16, 2018Observed: 460.77 ft at 11:45AM Apr 16, 2018Observed: 460.78 ft at 12:00PM Apr 16, 2018Observed: 460.79 ft at 12:15PM Apr 16, 2018Observed: 460.82 ft at 12:30PM Apr 16, 2018Observed: 460.88 ft at 12:45PM Apr 16, 2018Observed: 460.87 ft at 1:00PM Apr 16, 2018Observed: 460.87 ft at 1:15PM Apr 16, 2018Observed: 460.89 ft at 1:30PM Apr 16, 2018Observed: 460.88 ft at 1:45PM Apr 16, 2018Observed: 460.91 ft at 2:00PM Apr 16, 2018Observed: 460.93 ft at 2:15PM Apr 16, 2018Observed: 460.94 ft at 2:30PM Apr 16, 2018Observed: 460.92 ft at 2:45PM Apr 16, 2018Observed: 460.95 ft at 3:00PM Apr 16, 2018Observed: 460.94 ft at 3:15PM Apr 16, 2018Observed: 460.96 ft at 3:30PM Apr 16, 2018Observed: 461.04 ft at 3:45PM Apr 16, 2018Observed: 461.03 ft at 4:00PM Apr 16, 2018Observed: 461.04 ft at 4:15PM Apr 16, 2018Observed: 461.04 ft at 4:30PM Apr 16, 2018Observed: 461.04 ft at 4:45PM Apr 16, 2018Observed: 461.05 ft at 5:00PM Apr 16, 2018Observed: 461.04 ft at 5:15PM Apr 16, 2018Observed: 461.06 ft at 5:30PM Apr 16, 2018Observed: 461.05 ft at 5:45PM Apr 16, 2018Observed: 461.05 ft at 6:00PM Apr 16, 2018Observed: 461.04 ft at 6:15PM Apr 16, 2018Observed: 461.02 ft at 6:30PM Apr 16, 2018Observed: 461.02 ft at 6:45PM Apr 16, 2018Observed: 460.99 ft at 7:00PM Apr 16, 2018Observed: 460.97 ft at 7:15PM Apr 16, 2018Observed: 460.97 ft at 7:30PM Apr 16, 2018Observed: 460.96 ft at 7:45PM Apr 16, 2018Observed: 460.94 ft at 8:00PM Apr 16, 2018Observed: 460.93 ft at 8:15PM Apr 16, 2018Observed: 460.91 ft at 8:30PM Apr 16, 2018Observed: 460.9 ft at 8:45PM Apr 16, 2018Observed: 460.89 ft at 9:00PM Apr 16, 2018Observed: 460.88 ft at 9:15PM Apr 16, 2018Observed: 460.87 ft at 9:30PM Apr 16, 2018Observed: 460.86 ft at 9:45PM Apr 16, 2018Observed: 460.85 ft at 10:00PM Apr 16, 2018Observed: 460.83 ft at 10:15PM Apr 16, 2018Observed: 460.84 ft at 10:30PM Apr 16, 2018Observed: 460.85 ft at 10:45PM Apr 16, 2018Observed: 460.85 ft at 11:00PM Apr 16, 2018Observed: 460.87 ft at 11:15PM Apr 16, 2018Observed: 460.87 ft at 11:30PM Apr 16, 2018Observed: 460.87 ft at 11:45PM Apr 16, 2018Observed: 460.88 ft at 12:00AM Apr 17, 2018Observed: 460.89 ft at 12:15AM Apr 17, 2018Observed: 460.89 ft at 12:30AM Apr 17, 2018Observed: 460.9 ft at 12:45AM Apr 17, 2018Observed: 460.98 ft at 1:00AM Apr 17, 2018Observed: 460.97 ft at 1:15AM Apr 17, 2018Observed: 460.95 ft at 1:30AM Apr 17, 2018Observed: 460.96 ft at 1:45AM Apr 17, 2018Observed: 460.96 ft at 2:00AM Apr 17, 2018Observed: 460.97 ft at 2:15AM Apr 17, 2018Observed: 460.98 ft at 2:30AM Apr 17, 2018Observed: 460.99 ft at 2:45AM Apr 17, 2018Observed: 460.99 ft at 3:00AM Apr 17, 2018Observed: 461 ft at 3:15AM Apr 17, 2018Observed: 461.02 ft at 3:30AM Apr 17, 2018Observed: 461.04 ft at 3:45AM Apr 17, 2018Observed: 461.05 ft at 4:00AM Apr 17, 2018Observed: 461.07 ft at 4:15AM Apr 17, 2018Observed: 461.08 ft at 4:30AM Apr 17, 2018Highest Observation: 461.1 ft at 4:45AM Apr 17, 2018Highest Observation: 461.1 ft at 5:00AM Apr 17, 2018Highest Observation: 461.1 ft at 5:15AM Apr 17, 2018Highest Observation: 461.1 ft at 5:30AM Apr 17, 2018Highest Observation: 461.1 ft at 5:45AM Apr 17, 2018Highest Observation: 461.1 ft at 6:00AM Apr 17, 2018Highest Observation: 461.1 ft at 6:15AM Apr 17, 2018Highest Observation: 461.1 ft at 6:30AM Apr 17, 2018Observed: 461.09 ft at 6:45AM Apr 17, 2018Observed: 461.08 ft at 7:00AM Apr 17, 2018Observed: 461.07 ft at 7:15AM Apr 17, 2018Observed: 461.06 ft at 7:30AM Apr 17, 2018Observed: 461.05 ft at 7:45AM Apr 17, 2018Observed: 461.04 ft at 8:00AM Apr 17, 2018Observed: 461.03 ft at 8:15AM Apr 17, 2018Observed: 461.02 ft at 8:30AM Apr 17, 2018Observed: 461.01 ft at 8:45AM Apr 17, 2018Observed: 461 ft at 9:00AM Apr 17, 2018Observed: 461 ft at 9:15AM Apr 17, 2018Observed: 460.99 ft at 9:30AM Apr 17, 2018Observed: 460.99 ft at 9:45AM Apr 17, 2018Observed: 460.99 ft at 10:00AM Apr 17, 2018Observed: 460.98 ft at 10:15AM Apr 17, 2018Observed: 460.97 ft at 10:30AM Apr 17, 2018Observed: 460.96 ft at 10:45AM Apr 17, 2018Observed: 460.96 ft at 11:00AM Apr 17, 2018Observed: 460.97 ft at 11:15AM Apr 17, 2018Observed: 460.98 ft at 11:30AM Apr 17, 2018Observed: 460.98 ft at 11:45AM Apr 17, 2018Observed: 461.04 ft at 12:00PM Apr 17, 2018Observed: 461.03 ft at 12:15PM Apr 17, 2018Observed: 461.02 ft at 12:30PM Apr 17, 2018Observed: 461.01 ft at 12:45PM Apr 17, 2018Observed: 461.01 ft at 1:00PM Apr 17, 2018Observed: 461.03 ft at 1:15PM Apr 17, 2018Observed: 461.02 ft at 1:30PM Apr 17, 2018Observed: 461 ft at 1:45PM Apr 17, 2018Observed: 461 ft at 2:00PM Apr 17, 2018Observed: 460.99 ft at 2:15PM Apr 17, 2018Observed: 460.93 ft at 2:30PM Apr 17, 2018Observed: 460.91 ft at 2:45PM Apr 17, 2018Observed: 460.9 ft at 3:00PM Apr 17, 2018Observed: 460.89 ft at 3:15PM Apr 17, 2018Observed: 460.87 ft at 3:30PM Apr 17, 2018Observed: 460.89 ft at 3:45PM Apr 17, 2018Observed: 460.88 ft at 4:00PM Apr 17, 2018Observed: 460.87 ft at 4:15PM Apr 17, 2018Observed: 460.85 ft at 4:30PM Apr 17, 2018Observed: 460.83 ft at 4:45PM Apr 17, 2018Observed: 460.83 ft at 5:00PM Apr 17, 2018Observed: 460.82 ft at 5:15PM Apr 17, 2018Observed: 460.8 ft at 5:30PM Apr 17, 2018Observed: 460.79 ft at 5:45PM Apr 17, 2018Observed: 460.78 ft at 6:00PM Apr 17, 2018Observed: 460.78 ft at 6:15PM Apr 17, 2018Observed: 460.77 ft at 6:30PM Apr 17, 2018Observed: 460.77 ft at 6:45PM Apr 17, 2018Observed: 460.76 ft at 7:00PM Apr 17, 2018Observed: 460.76 ft at 7:15PM Apr 17, 2018Observed: 460.75 ft at 7:30PM Apr 17, 2018Observed: 460.78 ft at 7:45PM Apr 17, 2018Observed: 460.78 ft at 8:00PM Apr 17, 2018Observed: 460.77 ft at 8:15PM Apr 17, 2018Observed: 460.77 ft at 8:30PM Apr 17, 2018Observed: 460.77 ft at 8:45PM Apr 17, 2018Observed: 460.8 ft at 9:00PM Apr 17, 2018Observed: 460.78 ft at 9:15PM Apr 17, 2018Observed: 460.78 ft at 9:30PM Apr 17, 2018Observed: 460.77 ft at 9:45PM Apr 17, 2018Observed: 460.77 ft at 10:00PM Apr 17, 2018Observed: 460.77 ft at 10:15PM Apr 17, 2018Observed: 460.76 ft at 10:30PM Apr 17, 2018Observed: 460.76 ft at 10:45PM Apr 17, 2018Observed: 460.75 ft at 11:00PM Apr 17, 2018Observed: 460.76 ft at 11:15PM Apr 17, 2018Observed: 460.82 ft at 11:30PM Apr 17, 2018Observed: 460.8 ft at 11:45PM Apr 17, 2018Observed: 460.78 ft at 12:00AM Apr 18, 2018Observed: 460.77 ft at 12:15AM Apr 18, 2018Observed: 460.77 ft at 12:30AM Apr 18, 2018Observed: 460.76 ft at 12:45AM Apr 18, 2018Observed: 460.75 ft at 1:00AM Apr 18, 2018Observed: 460.76 ft at 1:15AM Apr 18, 2018Observed: 460.76 ft at 1:30AM Apr 18, 2018Observed: 460.74 ft at 1:45AM Apr 18, 2018Observed: 460.73 ft at 2:00AM Apr 18, 2018Observed: 460.73 ft at 2:15AM Apr 18, 2018Observed: 460.73 ft at 2:30AM Apr 18, 2018Observed: 460.72 ft at 2:45AM Apr 18, 2018Observed: 460.71 ft at 3:00AM Apr 18, 2018Observed: 460.73 ft at 3:15AM Apr 18, 2018Observed: 460.72 ft at 3:30AM Apr 18, 2018Observed: 460.71 ft at 3:45AM Apr 18, 2018Observed: 460.71 ft at 4:00AM Apr 18, 2018Observed: 460.71 ft at 4:15AM Apr 18, 2018Observed: 460.73 ft at 4:30AM Apr 18, 2018Observed: 460.71 ft at 4:45AM Apr 18, 2018Observed: 460.7 ft at 5:00AM Apr 18, 2018Observed: 460.69 ft at 5:15AM Apr 18, 2018Observed: 460.67 ft at 5:30AM Apr 18, 2018Observed: 460.66 ft at 5:45AM Apr 18, 2018Observed: 460.64 ft at 6:00AM Apr 18, 2018Observed: 460.62 ft at 6:15AM Apr 18, 2018Observed: 460.64 ft at 6:30AM Apr 18, 2018Observed: 460.62 ft at 6:45AM Apr 18, 2018Observed: 460.61 ft at 7:00AM Apr 18, 2018Observed: 460.6 ft at 7:15AM Apr 18, 2018Observed: 460.58 ft at 7:30AM Apr 18, 2018Observed: 460.58 ft at 7:45AM Apr 18, 2018Observed: 460.57 ft at 8:00AM Apr 18, 2018Observed: 460.56 ft at 8:15AM Apr 18, 2018Observed: 460.58 ft at 8:30AM Apr 18, 2018Observed: 460.56 ft at 8:45AM Apr 18, 2018Observed: 460.55 ft at 9:00AM Apr 18, 2018Observed: 460.54 ft at 9:15AM Apr 18, 2018Observed: 460.53 ft at 9:30AM Apr 18, 2018Observed: 460.53 ft at 9:45AM Apr 18, 2018Observed: 460.53 ft at 10:00AM Apr 18, 2018Observed: 460.53 ft at 10:15AM Apr 18, 2018Observed: 460.53 ft at 10:30AM Apr 18, 2018Observed: 460.55 ft at 10:45AM Apr 18, 2018Observed: 460.53 ft at 11:00AM Apr 18, 2018Observed: 460.54 ft at 11:15AM Apr 18, 2018Observed: 460.53 ft at 11:30AM Apr 18, 2018Observed: 460.51 ft at 11:45AM Apr 18, 2018Observed: 460.53 ft at 12:00PM Apr 18, 2018Observed: 460.51 ft at 12:15PM Apr 18, 2018Observed: 460.5 ft at 12:30PM Apr 18, 2018Observed: 460.49 ft at 12:45PM Apr 18, 2018Observed: 460.49 ft at 1:00PM Apr 18, 2018Observed: 460.46 ft at 1:15PM Apr 18, 2018Observed: 460.46 ft at 1:30PM Apr 18, 2018Observed: 460.46 ft at 1:45PM Apr 18, 2018Observed: 460.47 ft at 2:00PM Apr 18, 2018Observed: 460.49 ft at 2:15PM Apr 18, 2018Observed: 460.49 ft at 2:30PM Apr 18, 2018Observed: 460.5 ft at 2:45PM Apr 18, 2018Observed: 460.56 ft at 3:00PM Apr 18, 2018Observed: 460.54 ft at 3:15PM Apr 18, 2018Observed: 460.54 ft at 3:30PM Apr 18, 2018Observed: 460.54 ft at 3:45PM Apr 18, 2018Observed: 460.55 ft at 4:00PM Apr 18, 2018Observed: 460.63 ft at 4:15PM Apr 18, 2018Observed: 460.6 ft at 4:30PM Apr 18, 2018Observed: 460.59 ft at 4:45PM Apr 18, 2018Observed: 460.6 ft at 5:00PM Apr 18, 2018Observed: 460.6 ft at 5:15PM Apr 18, 2018Observed: 460.6 ft at 5:30PM Apr 18, 2018Observed: 460.6 ft at 5:45PM Apr 18, 2018Observed: 460.61 ft at 6:00PM Apr 18, 2018Observed: 460.61 ft at 6:15PM Apr 18, 2018Observed: 460.64 ft at 6:30PM Apr 18, 2018Observed: 460.65 ft at 6:45PM Apr 18, 2018Observed: 460.66 ft at 7:00PM Apr 18, 2018Observed: 460.67 ft at 7:15PM Apr 18, 2018Observed: 460.67 ft at 7:30PM Apr 18, 2018Observed: 460.66 ft at 7:45PM Apr 18, 2018Observed: 460.68 ft at 8:00PM Apr 18, 2018Observed: 460.69 ft at 8:15PM Apr 18, 2018Observed: 460.69 ft at 8:30PM Apr 18, 2018Observed: 460.69 ft at 8:45PM Apr 18, 2018Observed: 460.69 ft at 9:00PM Apr 18, 2018Observed: 460.7 ft at 9:15PM Apr 18, 2018Observed: 460.7 ft at 9:30PM Apr 18, 2018Observed: 460.71 ft at 9:45PM Apr 18, 2018Observed: 460.7 ft at 10:00PM Apr 18, 2018Observed: 460.71 ft at 10:15PM Apr 18, 2018Observed: 460.71 ft at 10:30PM Apr 18, 2018Observed: 460.71 ft at 10:45PM Apr 18, 2018Observed: 460.71 ft at 11:00PM Apr 18, 2018Observed: 460.72 ft at 11:15PM Apr 18, 2018Observed: 460.72 ft at 11:30PM Apr 18, 2018Observed: 460.73 ft at 11:45PM Apr 18, 2018Observed: 460.74 ft at 12:00AM Apr 19, 2018Observed: 460.74 ft at 12:15AM Apr 19, 2018Observed: 460.73 ft at 12:30AM Apr 19, 2018Observed: 460.72 ft at 12:45AM Apr 19, 2018Observed: 460.72 ft at 1:00AM Apr 19, 2018Observed: 460.71 ft at 1:15AM Apr 19, 2018Observed: 460.72 ft at 1:30AM Apr 19, 2018Observed: 460.71 ft at 1:45AM Apr 19, 2018Observed: 460.7 ft at 2:00AM Apr 19, 2018Observed: 460.58 ft at 2:15AM Apr 19, 2018Observed: 460.65 ft at 2:30AM Apr 19, 2018Observed: 460.64 ft at 2:45AM Apr 19, 2018Observed: 460.62 ft at 3:00AM Apr 19, 2018Observed: 460.62 ft at 3:15AM Apr 19, 2018Observed: 460.6 ft at 3:30AM Apr 19, 2018Observed: 460.58 ft at 3:45AM Apr 19, 2018Observed: 460.57 ft at 4:00AM Apr 19, 2018Observed: 460.55 ft at 4:15AM Apr 19, 2018Observed: 460.54 ft at 4:30AM Apr 19, 2018Observed: 460.55 ft at 4:45AM Apr 19, 2018Observed: 460.55 ft at 5:00AM Apr 19, 2018Observed: 460.54 ft at 5:15AM Apr 19, 2018Observed: 460.54 ft at 5:30AM Apr 19, 2018Observed: 460.54 ft at 5:45AM Apr 19, 2018Observed: 460.52 ft at 6:00AM Apr 19, 2018Observed: 460.49 ft at 6:15AM Apr 19, 2018Observed: 460.48 ft at 6:30AM Apr 19, 2018Observed: 460.46 ft at 6:45AM Apr 19, 2018Observed: 460.45 ft at 7:00AM Apr 19, 2018Observed: 460.44 ft at 7:15AM Apr 19, 2018Observed: 460.42 ft at 7:30AM Apr 19, 2018Observed: 460.4 ft at 7:45AM Apr 19, 2018Observed: 460.38 ft at 8:00AM Apr 19, 2018Observed: 460.37 ft at 8:15AM Apr 19, 2018Observed: 460.37 ft at 8:30AM Apr 19, 2018Observed: 460.34 ft at 8:45AM Apr 19, 2018Observed: 460.19 ft at 9:00AM Apr 19, 2018Observed: 460.27 ft at 9:15AM Apr 19, 2018Observed: 460.28 ft at 9:30AM Apr 19, 2018Observed: 460.27 ft at 9:45AM Apr 19, 2018Observed: 460.26 ft at 10:00AM Apr 19, 2018Observed: 460.29 ft at 10:15AM Apr 19, 2018Observed: 460.29 ft at 10:30AM Apr 19, 2018Observed: 460.29 ft at 10:45AM Apr 19, 2018Observed: 460.29 ft at 11:00AM Apr 19, 2018Observed: 460.28 ft at 11:15AM Apr 19, 2018Observed: 460.28 ft at 11:30AM Apr 19, 2018Observed: 460.28 ft at 11:45AM Apr 19, 2018Observed: 460.27 ft at 12:00PM Apr 19, 2018Observed: 460.26 ft at 12:15PM Apr 19, 2018Observed: 460.24 ft at 12:30PM Apr 19, 2018Observed: 460.22 ft at 12:45PM Apr 19, 2018Observed: 460.21 ft at 1:00PM Apr 19, 2018Observed: 460.21 ft at 1:15PM Apr 19, 2018Observed: 460.2 ft at 1:30PM Apr 19, 2018Observed: 460.19 ft at 1:45PM Apr 19, 2018Observed: 460.2 ft at 2:00PM Apr 19, 2018Observed: 460.2 ft at 2:15PM Apr 19, 2018Observed: 460.19 ft at 2:30PM Apr 19, 2018Observed: 460.21 ft at 2:45PM Apr 19, 2018Observed: 460.22 ft at 3:00PM Apr 19, 2018Observed: 460.2 ft at 3:15PM Apr 19, 2018Observed: 460.2 ft at 3:30PM Apr 19, 2018Observed: 460.3 ft at 3:45PM Apr 19, 2018Observed: 460.27 ft at 4:00PM Apr 19, 2018Observed: 460.26 ft at 4:15PM Apr 19, 2018Observed: 460.26 ft at 4:30PM Apr 19, 2018Observed: 460.25 ft at 4:45PM Apr 19, 2018Observed: 460.31 ft at 5:00PM Apr 19, 2018Observed: 460.29 ft at 5:15PM Apr 19, 2018Observed: 460.28 ft at 5:30PM Apr 19, 2018Observed: 460.27 ft at 5:45PM Apr 19, 2018Observed: 460.27 ft at 6:00PM Apr 19, 2018Observed: 460.27 ft at 6:15PM Apr 19, 2018Observed: 460.27 ft at 6:30PM Apr 19, 2018Observed: 460.27 ft at 6:45PM Apr 19, 2018Observed: 460.33 ft at 7:00PM Apr 19, 2018Observed: 460.3 ft at 7:15PM Apr 19, 2018Observed: 460.29 ft at 7:30PM Apr 19, 2018Observed: 460.29 ft at 7:45PM Apr 19, 2018Observed: 460.29 ft at 8:00PM Apr 19, 2018Observed: 460.29 ft at 8:15PM Apr 19, 2018Observed: 460.29 ft at 8:30PM Apr 19, 2018Observed: 460.36 ft at 8:45PM Apr 19, 2018Observed: 460.34 ft at 9:00PM Apr 19, 2018Observed: 460.33 ft at 9:15PM Apr 19, 2018Observed: 460.32 ft at 9:30PM Apr 19, 2018Observed: 460.32 ft at 9:45PM Apr 19, 2018Observed: 460.34 ft at 10:00PM Apr 19, 2018Observed: 460.34 ft at 10:15PM Apr 19, 2018Observed: 460.35 ft at 10:30PM Apr 19, 2018Observed: 460.34 ft at 10:45PM Apr 19, 2018Observed: 460.35 ft at 11:00PM Apr 19, 2018Observed: 460.35 ft at 11:15PM Apr 19, 2018Observed: 460.33 ft at 11:30PM Apr 19, 2018Observed: 460.34 ft at 11:45PM Apr 19, 2018Observed: 460.34 ft at 12:00AM Apr 20, 2018Observed: 460.35 ft at 12:15AM Apr 20, 2018Observed: 460.34 ft at 12:30AM Apr 20, 2018Observed: 460.34 ft at 12:45AM Apr 20, 2018Observed: 460.35 ft at 1:00AM Apr 20, 2018Observed: 460.33 ft at 1:15AM Apr 20, 2018Observed: 460.33 ft at 1:30AM Apr 20, 2018Observed: 460.32 ft at 1:45AM Apr 20, 2018Observed: 460.31 ft at 2:00AM Apr 20, 2018Observed: 460.31 ft at 2:15AM Apr 20, 2018Observed: 460.31 ft at 2:30AM Apr 20, 2018Observed: 460.3 ft at 2:45AM Apr 20, 2018Observed: 460.32 ft at 3:00AM Apr 20, 2018Observed: 460.32 ft at 3:15AM Apr 20, 2018Observed: 460.31 ft at 3:30AM Apr 20, 2018Observed: 460.3 ft at 3:45AM Apr 20, 2018Observed: 460.3 ft at 4:00AM Apr 20, 2018Observed: 460.29 ft at 4:15AM Apr 20, 2018Observed: 460.28 ft at 4:30AM Apr 20, 2018Observed: 460.28 ft at 4:45AM Apr 20, 2018Observed: 460.27 ft at 5:00AM Apr 20, 2018Observed: 460.27 ft at 5:15AM Apr 20, 2018Observed: 460.27 ft at 5:30AM Apr 20, 2018Observed: 460.26 ft at 5:45AM Apr 20, 2018Observed: 460.27 ft at 6:00AM Apr 20, 2018Observed: 460.28 ft at 6:15AM Apr 20, 2018Observed: 460.28 ft at 6:30AM Apr 20, 2018Observed: 460.29 ft at 6:45AM Apr 20, 2018Observed: 460.29 ft at 7:00AM Apr 20, 2018Observed: 460.31 ft at 7:15AM Apr 20, 2018Observed: 460.32 ft at 7:30AM Apr 20, 2018Observed: 460.31 ft at 7:45AM Apr 20, 2018Observed: 460.31 ft at 8:00AM Apr 20, 2018Observed: 460.32 ft at 8:15AM Apr 20, 2018Observed: 460.34 ft at 8:30AM Apr 20, 2018Observed: 460.33 ft at 8:45AM Apr 20, 2018Observed: 460.33 ft at 9:00AM Apr 20, 2018Observed: 460.32 ft at 9:15AM Apr 20, 2018Observed: 460.2 ft at 9:30AM Apr 20, 2018Observed: 460.29 ft at 9:45AM Apr 20, 2018Observed: 460.28 ft at 10:00AM Apr 20, 2018Observed: 460.26 ft at 10:15AM Apr 20, 2018Observed: 460.24 ft at 10:30AM Apr 20, 2018Observed: 460.06 ft at 10:45AM Apr 20, 2018Observed: 460.22 ft at 11:00AM Apr 20, 2018Observed: 460.16 ft at 11:15AM Apr 20, 2018Observed: 460.16 ft at 11:30AM Apr 20, 2018Observed: 460.15 ft at 11:45AM Apr 20, 2018Observed: 460.14 ft at 12:00PM Apr 20, 2018Observed: 460.14 ft at 12:15PM Apr 20, 2018Observed: 460.12 ft at 12:30PM Apr 20, 2018Observed: 460.09 ft at 12:45PM Apr 20, 2018Observed: 460.07 ft at 1:00PM Apr 20, 2018Observed: 460.06 ft at 1:15PM Apr 20, 2018Observed: 460.04 ft at 1:30PM Apr 20, 2018Observed: 460.07 ft at 1:45PM Apr 20, 2018Observed: 460.05 ft at 2:00PM Apr 20, 2018Observed: 460.04 ft at 2:15PM Apr 20, 2018Observed: 460.03 ft at 2:30PM Apr 20, 2018Observed: 460.03 ft at 2:45PM Apr 20, 2018Observed: 460.03 ft at 3:00PM Apr 20, 2018Observed: 460.02 ft at 3:15PM Apr 20, 2018Observed: 460.02 ft at 3:30PM Apr 20, 2018Observed: 460.02 ft at 3:45PM Apr 20, 2018Observed: 460.02 ft at 4:00PM Apr 20, 2018Observed: 460.02 ft at 4:15PM Apr 20, 2018Observed: 460.02 ft at 4:30PM Apr 20, 2018Observed: 460.03 ft at 4:45PM Apr 20, 2018Observed: 460.03 ft at 5:00PM Apr 20, 2018Observed: 460.04 ft at 5:15PM Apr 20, 2018Observed: 460.05 ft at 5:30PM Apr 20, 2018Observed: 460.07 ft at 5:45PM Apr 20, 2018Observed: 460.16 ft at 6:00PM Apr 20, 2018Observed: 460.13 ft at 6:15PM Apr 20, 2018Observed: 460.01 ft at 6:30PM Apr 20, 2018US Army Corps of EngineersOTWI2(plotting HGIRG) Graph Created (7:09PM Apr 20, 2018)ObservedLatest observed value: 460.01 ft at 6:30 PM CDT 20-Apr-2018. Flood Stage is 463 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Illinois River at Ottawa are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - at Marseilles lock/dam Upstream Gauge Downstream Gauge Downstream Gauge - at Starved Rock lock/dam
Flood Categories (in feet)
Major Flood Stage: 469
Moderate Flood Stage: 466
Flood Stage: 463
Action Stage: 461
Low Stage (in feet): -9999

Historic Crests
(1) 473.72 ft on 04/19/2013
(2) 472.21 ft on 09/16/2008
(3) 471.49 ft on 02/22/2018 (P)
(4) 470.23 ft on 03/11/2009
(5) 468.87 ft on 12/29/2008
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 471.49 ft on 02/22/2018 (P)
(2) 463.65 ft on 10/16/2017 (P)
(3) 464.10 ft on 07/23/2017
(4) 466.46 ft on 05/02/2017
(5) 464.33 ft on 03/31/2017
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
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
476 Water reaches top of Illinois River levee at Ottawa High School.
475.8 Water reaches to flood protection wall on Fox River south of Main Street Bridge near Ottawa High School.
475.3 Heritage Harbor lower basements begin to flood.
474.5 Water reaches top of Fox River levee at Ottawa High School.
474 Shoreline Boat Club building will be under water. Illinois River will overtop the berm at Waste Water Treatment Plant if not sandbagged.
472 Ottawa Regional Hospital west parking lot floods.
471.5 Water reaches top of Illinois River levee at city of Ottawa Waste Water Treatment Plant.
471.3 Fox River water reaches center of YMCA parking lot.
470 St Elizabeth Medical Center in Ottawa loading dock and property are threatened. Shabbona Street near Ottawa High School floods.
468.8 Water reaches top of Fox River bank at YMCA.
468.1 River Rescue Squad threatened.
467 Green Street at Shoreline Boat Club floods.
466.4 Hudson Street River Walk near the Fox River outlet floods. Fox River Park floods. St. Clair Street floods.
465.5 Marquette High School football fields begin to flood.
465.3 Lower green spaces of Ottawa Regional Hospital begin to flood.
465 Heratige Harbor Harberwalk floods. Dock ramps can only be accessed by boat.
463.9 Water reaches top of Fox River bank at St Elizabeth Medical Center in Ottawa.
462.4 Allen Park entrance threatened and west boat ramp is submerged.
460.8 River Rescue emergency boat dock is submerged. Ottawa High School begins flood fighting.
Photos
(1) Gage equipment located on top of levee near mouth of Fox River.
(2) Levee at Ottawa High School.
(3) Looking downstream from atop levee 9/3/2009. Gage height 459.80 ft.
(4) Looking upstream from atop levee 9/3/2009. Gage height 459.80 ft.
About This Location Collapse

Latitude: 41.344444° N, Longitude: 88.839167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 463 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
Additional Information Collapse
How much forecast precipitation was used for the current river forecast?
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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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