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Hydrograph River at a Glance Download Inundation
Mapping
Blanchard River at Ottawa Stage (ft)Flow (kcfs)Observed: 19.11 ft at 8:00PM May 01, 2021Observed: 19.01 ft at 8:30PM May 01, 2021Observed: 18.9 ft at 9:00PM May 01, 2021Observed: 18.8 ft at 9:30PM May 01, 2021Observed: 18.68 ft at 10:00PM May 01, 2021Observed: 18.58 ft at 10:30PM May 01, 2021Observed: 18.46 ft at 11:00PM May 01, 2021Observed: 18.35 ft at 11:30PM May 01, 2021Observed: 18.23 ft at 12:00AM May 02, 2021Observed: 18.11 ft at 12:30AM May 02, 2021Observed: 17.99 ft at 1:00AM May 02, 2021Observed: 17.86 ft at 1:30AM May 02, 2021Observed: 17.74 ft at 2:00AM May 02, 2021Observed: 17.61 ft at 2:30AM May 02, 2021Observed: 17.48 ft at 3:00AM May 02, 2021Observed: 17.35 ft at 3:30AM May 02, 2021Observed: 17.22 ft at 4:00AM May 02, 2021Observed: 17.09 ft at 4:30AM May 02, 2021Observed: 16.97 ft at 5:00AM May 02, 2021Observed: 16.83 ft at 5:30AM May 02, 2021Observed: 16.71 ft at 6:00AM May 02, 2021Observed: 16.57 ft at 6:30AM May 02, 2021Observed: 16.45 ft at 7:00AM May 02, 2021Observed: 16.32 ft at 7:30AM May 02, 2021Observed: 16.19 ft at 8:00AM May 02, 2021Observed: 16.06 ft at 8:30AM May 02, 2021Observed: 15.93 ft at 9:00AM May 02, 2021Observed: 15.8 ft at 9:30AM May 02, 2021Observed: 15.67 ft at 10:00AM May 02, 2021Observed: 15.55 ft at 10:30AM May 02, 2021Observed: 15.41 ft at 11:00AM May 02, 2021Observed: 15.28 ft at 11:30AM May 02, 2021Observed: 15.15 ft at 12:00PM May 02, 2021Observed: 15.02 ft at 12:30PM May 02, 2021Observed: 14.9 ft at 1:00PM May 02, 2021Observed: 14.76 ft at 1:30PM May 02, 2021Observed: 14.63 ft at 2:00PM May 02, 2021Observed: 14.51 ft at 2:30PM May 02, 2021Observed: 14.37 ft at 3:00PM May 02, 2021Observed: 14.25 ft at 3:30PM May 02, 2021Observed: 14.12 ft at 4:00PM May 02, 2021Observed: 14 ft at 4:30PM May 02, 2021Observed: 13.87 ft at 5:00PM May 02, 2021Observed: 13.76 ft at 5:30PM May 02, 2021Observed: 13.64 ft at 6:00PM May 02, 2021Observed: 13.52 ft at 6:30PM May 02, 2021Observed: 13.4 ft at 7:00PM May 02, 2021Observed: 13.29 ft at 7:30PM May 02, 2021Observed: 13.18 ft at 8:00PM May 02, 2021Observed: 13.06 ft at 8:30PM May 02, 2021Observed: 12.96 ft at 9:00PM May 02, 2021Observed: 12.84 ft at 9:30PM May 02, 2021Observed: 12.74 ft at 10:00PM May 02, 2021Observed: 12.63 ft at 10:30PM May 02, 2021Observed: 12.52 ft at 11:00PM May 02, 2021Observed: 12.41 ft at 11:30PM May 02, 2021Observed: 12.3 ft at 12:00AM May 03, 2021Observed: 12.18 ft at 12:30AM May 03, 2021Observed: 12.08 ft at 1:00AM May 03, 2021Observed: 11.97 ft at 1:30AM May 03, 2021Observed: 11.87 ft at 2:00AM May 03, 2021Observed: 11.76 ft at 2:30AM May 03, 2021Observed: 11.66 ft at 3:00AM May 03, 2021Observed: 11.57 ft at 3:30AM May 03, 2021Observed: 11.47 ft at 4:00AM May 03, 2021Observed: 11.38 ft at 4:30AM May 03, 2021Observed: 11.29 ft at 5:00AM May 03, 2021Observed: 11.2 ft at 5:30AM May 03, 2021Observed: 11.12 ft at 6:00AM May 03, 2021Observed: 11.04 ft at 6:30AM May 03, 2021Observed: 10.96 ft at 7:00AM May 03, 2021Observed: 10.88 ft at 7:30AM May 03, 2021Observed: 10.81 ft at 8:00AM May 03, 2021Observed: 10.73 ft at 8:30AM May 03, 2021Observed: 10.66 ft at 9:00AM May 03, 2021Observed: 10.59 ft at 9:30AM May 03, 2021Observed: 10.52 ft at 10:00AM May 03, 2021Observed: 10.44 ft at 10:30AM May 03, 2021Observed: 10.38 ft at 11:00AM May 03, 2021Observed: 10.32 ft at 11:30AM May 03, 2021Observed: 10.26 ft at 12:00PM May 03, 2021Observed: 10.19 ft at 12:30PM May 03, 2021Observed: 10.14 ft at 1:00PM May 03, 2021Observed: 10.08 ft at 1:30PM May 03, 2021Observed: 10.02 ft at 2:00PM May 03, 2021Observed: 9.97 ft at 2:30PM May 03, 2021Observed: 9.91 ft at 3:00PM May 03, 2021Observed: 9.86 ft at 3:30PM May 03, 2021Observed: 9.81 ft at 4:00PM May 03, 2021Observed: 9.76 ft at 4:30PM May 03, 2021Observed: 9.72 ft at 5:00PM May 03, 2021Observed: 9.67 ft at 5:30PM May 03, 2021Observed: 9.63 ft at 6:00PM May 03, 2021Observed: 9.59 ft at 6:30PM May 03, 2021Observed: 9.55 ft at 7:00PM May 03, 2021Observed: 9.5 ft at 7:30PM May 03, 2021Observed: 9.47 ft at 8:00PM May 03, 2021Observed: 9.43 ft at 8:30PM May 03, 2021Observed: 9.4 ft at 9:00PM May 03, 2021Observed: 9.37 ft at 9:30PM May 03, 2021Observed: 9.34 ft at 10:00PM May 03, 2021Observed: 9.31 ft at 10:30PM May 03, 2021Observed: 9.29 ft at 11:00PM May 03, 2021Observed: 9.26 ft at 11:30PM May 03, 2021Observed: 9.23 ft at 12:00AM May 04, 2021Observed: 9.21 ft at 12:30AM May 04, 2021Observed: 9.19 ft at 1:00AM May 04, 2021Observed: 9.17 ft at 1:30AM May 04, 2021Observed: 9.16 ft at 2:00AM May 04, 2021Observed: 9.14 ft at 2:30AM May 04, 2021Observed: 9.13 ft at 3:00AM May 04, 2021Observed: 9.11 ft at 3:30AM May 04, 2021Observed: 9.11 ft at 4:00AM May 04, 2021Observed: 9.1 ft at 4:30AM May 04, 2021Observed: 9.09 ft at 5:00AM May 04, 2021Observed: 9.07 ft at 5:30AM May 04, 2021Observed: 9.06 ft at 6:00AM May 04, 2021Observed: 9.04 ft at 6:30AM May 04, 2021Observed: 9.04 ft at 7:00AM May 04, 2021Observed: 9.02 ft at 7:30AM May 04, 2021Observed: 9.01 ft at 8:00AM May 04, 2021Observed: 8.99 ft at 8:30AM May 04, 2021Observed: 8.98 ft at 9:00AM May 04, 2021Observed: 8.97 ft at 9:30AM May 04, 2021Observed: 8.96 ft at 10:00AM May 04, 2021Observed: 8.94 ft at 10:30AM May 04, 2021Observed: 8.93 ft at 11:00AM May 04, 2021Observed: 8.93 ft at 11:30AM May 04, 2021Observed: 8.92 ft at 12:00PM May 04, 2021Observed: 8.9 ft at 12:30PM May 04, 2021Observed: 8.9 ft at 1:00PM May 04, 2021Observed: 8.88 ft at 1:30PM May 04, 2021Observed: 8.87 ft at 2:00PM May 04, 2021Observed: 8.86 ft at 2:30PM May 04, 2021Observed: 8.86 ft at 3:00PM May 04, 2021Observed: 8.85 ft at 3:30PM May 04, 2021Observed: 8.85 ft at 4:00PM May 04, 2021Observed: 8.85 ft at 4:30PM May 04, 2021Observed: 8.85 ft at 5:00PM May 04, 2021Observed: 8.84 ft at 5:30PM May 04, 2021Observed: 8.84 ft at 6:00PM May 04, 2021Observed: 8.85 ft at 6:30PM May 04, 2021Observed: 8.85 ft at 7:00PM May 04, 2021Observed: 8.86 ft at 7:30PM May 04, 2021Observed: 8.87 ft at 8:00PM May 04, 2021Observed: 8.88 ft at 8:30PM May 04, 2021Observed: 8.9 ft at 9:00PM May 04, 2021Observed: 8.91 ft at 9:30PM May 04, 2021Observed: 8.92 ft at 10:00PM May 04, 2021Observed: 8.95 ft at 10:30PM May 04, 2021Observed: 8.96 ft at 11:00PM May 04, 2021Observed: 8.97 ft at 11:30PM May 04, 2021Observed: 8.99 ft at 12:00AM May 05, 2021Observed: 9 ft at 12:30AM May 05, 2021Observed: 9.01 ft at 1:00AM May 05, 2021Observed: 9.02 ft at 1:30AM May 05, 2021Observed: 9.03 ft at 2:00AM May 05, 2021Observed: 9.03 ft at 2:30AM May 05, 2021Observed: 9.04 ft at 3:00AM May 05, 2021Observed: 9.03 ft at 3:30AM May 05, 2021Observed: 9.04 ft at 4:00AM May 05, 2021Observed: 9.03 ft at 4:30AM May 05, 2021Observed: 9.03 ft at 5:00AM May 05, 2021Observed: 9.03 ft at 5:30AM May 05, 2021Observed: 9.03 ft at 6:00AM May 05, 2021Observed: 9.03 ft at 6:30AM May 05, 2021Observed: 9.02 ft at 7:00AM May 05, 2021Observed: 9.02 ft at 7:30AM May 05, 2021Observed: 9.01 ft at 8:00AM May 05, 2021Observed: 9.01 ft at 8:30AM May 05, 2021Observed: 9 ft at 9:00AM May 05, 2021Observed: 8.99 ft at 9:30AM May 05, 2021Observed: 8.98 ft at 10:00AM May 05, 2021Observed: 8.98 ft at 10:30AM May 05, 2021Observed: 8.97 ft at 11:00AM May 05, 2021Observed: 8.97 ft at 11:30AM May 05, 2021Observed: 8.96 ft at 12:00PM May 05, 2021Observed: 8.96 ft at 12:30PM May 05, 2021Observed: 8.95 ft at 1:00PM May 05, 2021Observed: 8.95 ft at 1:30PM May 05, 2021Observed: 8.95 ft at 2:00PM May 05, 2021Observed: 8.94 ft at 2:30PM May 05, 2021Observed: 8.94 ft at 3:00PM May 05, 2021Observed: 8.94 ft at 3:30PM May 05, 2021Observed: 8.94 ft at 4:00PM May 05, 2021Observed: 8.94 ft at 4:30PM May 05, 2021Observed: 8.94 ft at 5:00PM May 05, 2021Observed: 8.93 ft at 5:30PM May 05, 2021Observed: 8.94 ft at 6:00PM May 05, 2021Observed: 8.93 ft at 6:30PM May 05, 2021Observed: 8.94 ft at 7:00PM May 05, 2021Observed: 8.94 ft at 7:30PM May 05, 2021Observed: 8.94 ft at 8:00PM May 05, 2021Observed: 8.94 ft at 8:30PM May 05, 2021Observed: 8.94 ft at 9:00PM May 05, 2021Observed: 8.94 ft at 9:30PM May 05, 2021Observed: 8.94 ft at 10:00PM May 05, 2021Observed: 8.94 ft at 10:30PM May 05, 2021Observed: 8.94 ft at 11:00PM May 05, 2021Observed: 8.93 ft at 11:30PM May 05, 2021Observed: 8.93 ft at 12:00AM May 06, 2021Observed: 8.92 ft at 12:30AM May 06, 2021Observed: 8.92 ft at 1:00AM May 06, 2021Observed: 8.92 ft at 1:30AM May 06, 2021Observed: 8.91 ft at 2:00AM May 06, 2021Observed: 8.9 ft at 2:30AM May 06, 2021Observed: 8.89 ft at 3:00AM May 06, 2021Observed: 8.88 ft at 3:30AM May 06, 2021Observed: 8.87 ft at 4:00AM May 06, 2021Observed: 8.86 ft at 4:30AM May 06, 2021Observed: 8.84 ft at 5:00AM May 06, 2021Observed: 8.83 ft at 5:30AM May 06, 2021Observed: 8.82 ft at 6:00AM May 06, 2021Observed: 8.8 ft at 6:30AM May 06, 2021Observed: 8.78 ft at 7:00AM May 06, 2021Observed: 8.77 ft at 7:30AM May 06, 2021Observed: 8.75 ft at 8:00AM May 06, 2021Observed: 8.73 ft at 8:30AM May 06, 2021Observed: 8.71 ft at 9:00AM May 06, 2021Observed: 8.68 ft at 9:30AM May 06, 2021Observed: 8.67 ft at 10:00AM May 06, 2021Observed: 8.64 ft at 10:30AM May 06, 2021Observed: 8.62 ft at 11:00AM May 06, 2021Observed: 8.6 ft at 11:30AM May 06, 2021Observed: 8.57 ft at 12:00PM May 06, 2021Observed: 8.55 ft at 12:30PM May 06, 2021Observed: 8.53 ft at 1:00PM May 06, 2021Observed: 8.51 ft at 1:30PM May 06, 2021Observed: 8.49 ft at 2:00PM May 06, 2021Observed: 8.47 ft at 2:30PM May 06, 2021Observed: 8.46 ft at 3:00PM May 06, 2021Observed: 8.44 ft at 3:30PM May 06, 2021Observed: 8.42 ft at 4:00PM May 06, 2021Observed: 8.4 ft at 4:30PM May 06, 2021Observed: 8.38 ft at 5:00PM May 06, 2021Observed: 8.36 ft at 5:30PM May 06, 2021Observed: 8.34 ft at 6:00PM May 06, 2021Observed: 8.33 ft at 6:30PM May 06, 2021Observed: 8.31 ft at 7:00PM May 06, 2021Observed: 8.29 ft at 7:30PM May 06, 2021Observed: 8.28 ft at 8:00PM May 06, 2021Observed: 8.26 ft at 8:30PM May 06, 2021Observed: 8.24 ft at 9:00PM May 06, 2021Observed: 8.23 ft at 9:30PM May 06, 2021Observed: 8.21 ft at 10:00PM May 06, 2021Observed: 8.19 ft at 10:30PM May 06, 2021Observed: 8.15 ft at 12:00AM May 07, 2021Observed: 8.13 ft at 12:30AM May 07, 2021Observed: 8.11 ft at 1:00AM May 07, 2021Observed: 8.09 ft at 1:30AM May 07, 2021Observed: 8.08 ft at 2:00AM May 07, 2021Observed: 8.06 ft at 2:30AM May 07, 2021Observed: 8.04 ft at 3:00AM May 07, 2021Observed: 8.03 ft at 3:30AM May 07, 2021Observed: 8.02 ft at 4:00AM May 07, 2021Observed: 8 ft at 4:30AM May 07, 2021Observed: 7.98 ft at 5:00AM May 07, 2021Observed: 7.97 ft at 5:30AM May 07, 2021Observed: 7.95 ft at 6:00AM May 07, 2021Observed: 7.95 ft at 6:30AM May 07, 2021Observed: 7.93 ft at 7:00AM May 07, 2021Observed: 7.92 ft at 7:30AM May 07, 2021Observed: 7.91 ft at 8:00AM May 07, 2021Observed: 7.89 ft at 8:30AM May 07, 2021Observed: 7.88 ft at 9:00AM May 07, 2021Observed: 7.87 ft at 9:30AM May 07, 2021Observed: 7.85 ft at 10:00AM May 07, 2021Observed: 7.84 ft at 10:30AM May 07, 2021Observed: 7.82 ft at 11:00AM May 07, 2021Observed: 7.81 ft at 11:30AM May 07, 2021Observed: 7.79 ft at 12:00PM May 07, 2021Observed: 7.78 ft at 12:30PM May 07, 2021Observed: 7.77 ft at 1:00PM May 07, 2021Observed: 7.75 ft at 1:30PM May 07, 2021Observed: 7.74 ft at 2:00PM May 07, 2021Observed: 7.73 ft at 2:30PM May 07, 2021Observed: 7.73 ft at 3:00PM May 07, 2021Observed: 7.72 ft at 3:30PM May 07, 2021Observed: 7.71 ft at 4:00PM May 07, 2021Observed: 7.71 ft at 4:30PM May 07, 2021Observed: 7.73 ft at 5:00PM May 07, 2021Observed: 7.72 ft at 5:30PM May 07, 2021Observed: 7.71 ft at 6:00PM May 07, 2021Observed: 7.71 ft at 6:30PM May 07, 2021Observed: 7.72 ft at 7:00PM May 07, 2021Observed: 7.72 ft at 7:30PM May 07, 2021Observed: 7.72 ft at 8:00PM May 07, 2021Observed: 7.72 ft at 8:30PM May 07, 2021Observed: 7.71 ft at 9:00PM May 07, 2021Observed: 7.71 ft at 9:30PM May 07, 2021Observed: 7.71 ft at 10:00PM May 07, 2021Observed: 7.7 ft at 10:30PM May 07, 2021Observed: 7.7 ft at 11:00PM May 07, 2021Observed: 7.69 ft at 11:30PM May 07, 2021Observed: 7.69 ft at 12:00AM May 08, 2021Observed: 7.68 ft at 12:30AM May 08, 2021Observed: 7.68 ft at 1:00AM May 08, 2021Observed: 7.67 ft at 1:30AM May 08, 2021Observed: 7.66 ft at 2:00AM May 08, 2021Observed: 7.65 ft at 2:30AM May 08, 2021Observed: 7.65 ft at 3:00AM May 08, 2021Observed: 7.64 ft at 3:30AM May 08, 2021Observed: 7.64 ft at 4:00AM May 08, 2021Observed: 7.63 ft at 4:30AM May 08, 2021Observed: 7.63 ft at 5:00AM May 08, 2021Observed: 7.62 ft at 5:30AM May 08, 2021Observed: 7.62 ft at 6:00AM May 08, 2021Observed: 7.61 ft at 6:30AM May 08, 2021Observed: 7.6 ft at 7:00AM May 08, 2021Observed: 7.6 ft at 7:30AM May 08, 2021Observed: 7.59 ft at 8:00AM May 08, 2021Observed: 7.58 ft at 8:30AM May 08, 2021Observed: 7.58 ft at 9:00AM May 08, 2021Observed: 7.58 ft at 9:30AM May 08, 2021Observed: 7.57 ft at 10:00AM May 08, 2021Observed: 7.56 ft at 10:30AM May 08, 2021Observed: 7.56 ft at 11:00AM May 08, 2021Observed: 7.55 ft at 11:30AM May 08, 2021Observed: 7.55 ft at 12:00PM May 08, 2021Observed: 7.55 ft at 12:30PM May 08, 2021Observed: 7.55 ft at 1:00PM May 08, 2021Observed: 7.55 ft at 1:30PM May 08, 2021Observed: 7.55 ft at 2:00PM May 08, 2021Observed: 7.55 ft at 2:30PM May 08, 2021Observed: 7.55 ft at 3:00PM May 08, 2021Observed: 7.55 ft at 3:30PM May 08, 2021Observed: 7.55 ft at 4:00PM May 08, 2021Observed: 7.55 ft at 4:30PM May 08, 2021Observed: 7.55 ft at 5:00PM May 08, 2021Observed: 7.55 ft at 5:30PM May 08, 2021Observed: 7.55 ft at 6:00PM May 08, 2021Observed: 7.55 ft at 6:30PM May 08, 2021Observed: 7.54 ft at 7:00PM May 08, 2021Observed: 7.55 ft at 7:30PM May 08, 2021Observed: 7.54 ft at 8:00PM May 08, 2021Observed: 7.54 ft at 8:30PM May 08, 2021Observed: 7.54 ft at 9:00PM May 08, 2021Observed: 7.54 ft at 9:30PM May 08, 2021Observed: 7.53 ft at 10:00PM May 08, 2021Observed: 7.53 ft at 10:30PM May 08, 2021Observed: 7.53 ft at 11:00PM May 08, 2021Observed: 7.53 ft at 11:30PM May 08, 2021Observed: 7.53 ft at 12:00AM May 09, 2021Observed: 7.53 ft at 12:30AM May 09, 2021Observed: 7.53 ft at 1:00AM May 09, 2021Observed: 7.53 ft at 1:30AM May 09, 2021Observed: 7.53 ft at 2:00AM May 09, 2021Observed: 7.53 ft at 2:30AM May 09, 2021Observed: 7.54 ft at 3:00AM May 09, 2021Observed: 7.54 ft at 3:30AM May 09, 2021Observed: 7.55 ft at 4:00AM May 09, 2021Observed: 7.57 ft at 4:30AM May 09, 2021Observed: 7.58 ft at 5:00AM May 09, 2021Observed: 7.59 ft at 5:30AM May 09, 2021Observed: 7.6 ft at 6:00AM May 09, 2021Observed: 7.63 ft at 6:30AM May 09, 2021Observed: 7.66 ft at 7:00AM May 09, 2021Observed: 7.72 ft at 7:30AM May 09, 2021Observed: 7.77 ft at 8:00AM May 09, 2021Observed: 7.85 ft at 8:30AM May 09, 2021Observed: 7.97 ft at 9:00AM May 09, 2021Observed: 8.07 ft at 9:30AM May 09, 2021Observed: 8.21 ft at 10:00AM May 09, 2021Observed: 8.37 ft at 10:30AM May 09, 2021Observed: 8.61 ft at 11:00AM May 09, 2021Observed: 8.87 ft at 11:30AM May 09, 2021Observed: 9.16 ft at 12:00PM May 09, 2021Observed: 9.5 ft at 12:30PM May 09, 2021Observed: 9.89 ft at 1:00PM May 09, 2021Observed: 10.32 ft at 1:30PM May 09, 2021Observed: 10.79 ft at 2:00PM May 09, 2021Observed: 11.29 ft at 2:30PM May 09, 2021Observed: 11.8 ft at 3:00PM May 09, 2021Observed: 12.37 ft at 3:30PM May 09, 2021Observed: 12.9 ft at 4:00PM May 09, 2021Observed: 13.47 ft at 4:30PM May 09, 2021Observed: 13.99 ft at 5:00PM May 09, 2021Observed: 14.5 ft at 5:30PM May 09, 2021Observed: 14.88 ft at 6:00PM May 09, 2021Observed: 15.25 ft at 6:30PM May 09, 2021Observed: 15.58 ft at 7:00PM May 09, 2021Observed: 15.9 ft at 7:30PM May 09, 2021Observed: 16.21 ft at 8:00PM May 09, 2021Observed: 16.47 ft at 8:30PM May 09, 2021Observed: 16.73 ft at 9:00PM May 09, 2021Observed: 16.98 ft at 9:30PM May 09, 2021Observed: 17.21 ft at 10:00PM May 09, 2021Observed: 17.43 ft at 10:30PM May 09, 2021Observed: 17.64 ft at 11:00PM May 09, 2021Observed: 17.82 ft at 11:30PM May 09, 2021Observed: 18.02 ft at 12:00AM May 10, 2021Observed: 18.21 ft at 12:30AM May 10, 2021Observed: 18.4 ft at 1:00AM May 10, 2021Observed: 18.57 ft at 1:30AM May 10, 2021Observed: 18.77 ft at 2:00AM May 10, 2021Observed: 18.95 ft at 2:30AM May 10, 2021Observed: 19.11 ft at 3:00AM May 10, 2021Observed: 19.28 ft at 3:30AM May 10, 2021Observed: 19.45 ft at 4:00AM May 10, 2021Observed: 19.62 ft at 4:30AM May 10, 2021Observed: 19.77 ft at 5:00AM May 10, 2021Observed: 19.94 ft at 5:30AM May 10, 2021Observed: 20.1 ft at 6:00AM May 10, 2021Observed: 20.27 ft at 6:30AM May 10, 2021Observed: 20.43 ft at 7:00AM May 10, 2021Observed: 20.59 ft at 7:30AM May 10, 2021Observed: 20.78 ft at 8:00AM May 10, 2021Observed: 20.95 ft at 8:30AM May 10, 2021Observed: 21.1 ft at 9:00AM May 10, 2021Observed: 21.26 ft at 9:30AM May 10, 2021Observed: 21.45 ft at 10:00AM May 10, 2021Observed: 21.61 ft at 10:30AM May 10, 2021Observed: 21.78 ft at 11:00AM May 10, 2021Observed: 21.92 ft at 11:30AM May 10, 2021Observed: 22.09 ft at 12:00PM May 10, 2021Observed: 22.23 ft at 12:30PM May 10, 2021Observed: 22.37 ft at 1:00PM May 10, 2021Observed: 22.49 ft at 1:30PM May 10, 2021Observed: 22.6 ft at 2:00PM May 10, 2021Observed: 22.68 ft at 2:30PM May 10, 2021Observed: 22.77 ft at 3:00PM May 10, 2021Observed: 22.85 ft at 3:30PM May 10, 2021Observed: 22.92 ft at 4:00PM May 10, 2021Observed: 22.99 ft at 4:30PM May 10, 2021Observed: 23.05 ft at 5:00PM May 10, 2021Observed: 23.08 ft at 5:30PM May 10, 2021Observed: 23.11 ft at 6:00PM May 10, 2021Observed: 23.15 ft at 6:30PM May 10, 2021Observed: 23.17 ft at 7:00PM May 10, 2021Observed: 23.2 ft at 7:30PM May 10, 2021Observed: 23.22 ft at 8:00PM May 10, 2021Observed: 23.24 ft at 8:30PM May 10, 2021Observed: 23.22 ft at 9:00PM May 10, 2021Observed: 23.24 ft at 9:30PM May 10, 2021Observed: 23.24 ft at 10:00PM May 10, 2021Observed: 23.24 ft at 10:30PM May 10, 2021Observed: 23.23 ft at 11:00PM May 10, 2021Observed: 23.22 ft at 11:30PM May 10, 2021Observed: 23.25 ft at 12:00AM May 11, 2021Observed: 23.22 ft at 12:30AM May 11, 2021Observed: 23.24 ft at 1:00AM May 11, 2021Observed: 23.23 ft at 1:30AM May 11, 2021Observed: 23.25 ft at 2:00AM May 11, 2021Highest Observation: 23.27 ft at 2:30AM May 11, 2021Forecast: 24 ft 8:00AM May 11, 2021Highest Forecast: 24.1 ft 2:00PM May 11, 2021Forecast: 24 ft 8:00PM May 11, 2021Forecast: 23.6 ft 2:00AM May 12, 2021Forecast: 22.6 ft 8:00AM May 12, 2021Forecast: 21.5 ft 2:00PM May 12, 2021Forecast: 20.4 ft 8:00PM May 12, 2021Forecast: 19.1 ft 2:00AM May 13, 2021Forecast: 17.8 ft 8:00AM May 13, 2021Forecast: 16.6 ft 2:00PM May 13, 2021Forecast: 15.4 ft 8:00PM May 13, 2021Forecast: 14.3 ft 2:00AM May 14, 2021Forecast: 13.4 ft 8:00AM May 14, 2021Forecast: 12.5 ft 2:00PM May 14, 2021Forecast: 11.8 ft 8:00PM May 14, 2021Forecast: 11.1 ft 2:00AM May 15, 2021Forecast: 10.5 ft 8:00AM May 15, 2021Forecast: 10 ft 2:00PM May 15, 2021Forecast: 9.5 ft 8:00PM May 15, 2021Jump to USGS siteOTTO1(plotting HGIRG) Graph Created (3:52AM May 11, 2021)ObservedForecast (issued 9:30PM May 10)Latest observed value: 23.27 ft at 2:30 AM EDT 11-May-2021. Flood Stage is 23 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 72 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Blanchard River at Ottawa are issued routinely year-round.

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Upstream Locations Upstream Gauge Downstream Gauge Downstream Gauge - near Defiance Power Dam
Flood Categories (in feet)
Major Flood Stage: 30
Moderate Flood Stage: 27
Flood Stage: 23
Action Stage: 20
Low Stage (in feet): -9999

Historic Crests
(1) 33.30 ft on 03/25/1913
(2) 31.40 ft on 08/23/2007
(3) 29.75 ft on 06/15/1981
(4) 29.72 ft on 02/11/1959
(5) 29.29 ft on 02/07/2008
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 27.55 ft on 07/15/2017
(2) 23.27 ft on 12/30/2015
(3) 25.82 ft on 06/29/2015
(4) 25.88 ft on 06/17/2015
(5) 28.85 ft on 12/23/2013
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -2.37 ft on 01/15/1979
(2) -1.50 ft on 02/19/1980
(3) 4.39 ft on 08/28/2020
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

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
29 Widespread major flooding occurs throughout downtown Ottawa.
27 Flooding worsens on the south side of Ottawa, with water on several roads. Flooding also begins in other areas of Ottawa.
26.6 Flood water begins to hit the bottom of the bridge at the gage site.
25 Flooding begins along south Walnut and west Second Streets on the south side of Ottawa.
23 Lowland flooding occurs mainly in south Ottawa. Flood water also gets into low farmlands.
Photos
(1) Upstream view from gauge site
(2) Downstream view from gauge site
About This Location Collapse

Latitude: 41.016944° N, Longitude: 84.046944° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 23 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 698.43 ft 721.43 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
Per USGS record: All periods of record that are estimated are rated poor. All other periods are rated as follows: For the period Oct. 1, 2014 to Feb. 10, 2016, records good. Feb. 11, 2016 to Dec. 22, 2016 discharge records are good. Dec. 23, 2016 to Feb. 14, 2017 discharge records are fair. Feb. 15, 2017 to May 29, 2017 discharge records are good. May 30, 2017 to Nov. 14, 2017 discharge records are fair. Nov. 15, 2017 to Oct. 30, 2018 discharge records are fair, except for discharges between 700 cfs. and 5900 cfs. which are poor. Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) River Forecast VS. River Potential
HEFS Ensemble NAEFS Ensemble Outlook vs. Forecast

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.

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
Northern Indiana Weather Forecast Office
7506 E 850 N
Syracuse, IN 46567
(574) 834-1104
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Page last modified: 2-Nov-2020 7:30 PM
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