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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS) at a repurposed https://water.noaa.gov. A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id: https://preview.water.noaa.gov/gauges/SSSSS.

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

Please visit https://www.weather.gov/owp/operations for more information.



Hydrograph River at a Glance Download Inundation
Mapping
Blanchard River at Ottawa Stage (ft)Flow (kcfs)Observed: 16.01 ft at 7:00PM Mar 09, 2024Observed: 16.13 ft at 7:30PM Mar 09, 2024Observed: 16.23 ft at 8:00PM Mar 09, 2024Observed: 16.33 ft at 8:30PM Mar 09, 2024Observed: 16.41 ft at 9:00PM Mar 09, 2024Observed: 16.51 ft at 9:30PM Mar 09, 2024Observed: 16.58 ft at 10:00PM Mar 09, 2024Observed: 16.65 ft at 10:30PM Mar 09, 2024Observed: 16.71 ft at 11:00PM Mar 09, 2024Observed: 16.8 ft at 11:30PM Mar 09, 2024Observed: 16.86 ft at 12:00AM Mar 10, 2024Observed: 16.92 ft at 12:30AM Mar 10, 2024Observed: 16.97 ft at 1:00AM Mar 10, 2024Observed: 17.01 ft at 1:30AM Mar 10, 2024Observed: 17.05 ft at 3:00AM Mar 10, 2024Observed: 17.09 ft at 3:30AM Mar 10, 2024Observed: 17.12 ft at 4:00AM Mar 10, 2024Observed: 17.15 ft at 4:30AM Mar 10, 2024Observed: 17.17 ft at 5:00AM Mar 10, 2024Observed: 17.19 ft at 5:30AM Mar 10, 2024Observed: 17.22 ft at 6:00AM Mar 10, 2024Observed: 17.24 ft at 6:30AM Mar 10, 2024Observed: 17.25 ft at 7:00AM Mar 10, 2024Observed: 17.25 ft at 7:30AM Mar 10, 2024Observed: 17.27 ft at 8:00AM Mar 10, 2024Observed: 17.27 ft at 8:30AM Mar 10, 2024Observed: 17.27 ft at 9:00AM Mar 10, 2024Observed: 17.27 ft at 9:30AM Mar 10, 2024Observed: 17.28 ft at 10:00AM Mar 10, 2024Observed: 17.29 ft at 10:30AM Mar 10, 2024Observed: 17.28 ft at 11:00AM Mar 10, 2024Observed: 17.27 ft at 11:30AM Mar 10, 2024Observed: 17.26 ft at 12:00PM Mar 10, 2024Observed: 17.24 ft at 12:30PM Mar 10, 2024Observed: 17.22 ft at 1:00PM Mar 10, 2024Observed: 17.21 ft at 1:30PM Mar 10, 2024Observed: 17.19 ft at 2:00PM Mar 10, 2024Observed: 17.17 ft at 2:30PM Mar 10, 2024Observed: 17.16 ft at 3:00PM Mar 10, 2024Observed: 17.13 ft at 3:30PM Mar 10, 2024Observed: 17.11 ft at 4:00PM Mar 10, 2024Observed: 17.08 ft at 4:30PM Mar 10, 2024Observed: 17.04 ft at 5:00PM Mar 10, 2024Observed: 17.02 ft at 5:30PM Mar 10, 2024Observed: 16.98 ft at 6:00PM Mar 10, 2024Observed: 16.95 ft at 6:30PM Mar 10, 2024Observed: 16.91 ft at 7:00PM Mar 10, 2024Observed: 16.87 ft at 7:30PM Mar 10, 2024Observed: 16.83 ft at 8:00PM Mar 10, 2024Observed: 16.8 ft at 8:30PM Mar 10, 2024Observed: 16.75 ft at 9:00PM Mar 10, 2024Observed: 16.7 ft at 9:30PM Mar 10, 2024Observed: 16.65 ft at 10:00PM Mar 10, 2024Observed: 16.61 ft at 10:30PM Mar 10, 2024Observed: 16.56 ft at 11:00PM Mar 10, 2024Observed: 16.52 ft at 11:30PM Mar 10, 2024Observed: 16.46 ft at 12:00AM Mar 11, 2024Observed: 16.41 ft at 12:30AM Mar 11, 2024Observed: 16.35 ft at 1:00AM Mar 11, 2024Observed: 16.3 ft at 1:30AM Mar 11, 2024Observed: 16.23 ft at 2:00AM Mar 11, 2024Observed: 16.17 ft at 2:30AM Mar 11, 2024Observed: 16.11 ft at 3:00AM Mar 11, 2024Observed: 16.05 ft at 3:30AM Mar 11, 2024Observed: 15.98 ft at 4:00AM Mar 11, 2024Observed: 15.92 ft at 4:30AM Mar 11, 2024Observed: 15.84 ft at 5:00AM Mar 11, 2024Observed: 15.78 ft at 5:30AM Mar 11, 2024Observed: 15.71 ft at 6:00AM Mar 11, 2024Observed: 15.63 ft at 6:30AM Mar 11, 2024Observed: 15.54 ft at 7:00AM Mar 11, 2024Observed: 15.47 ft at 7:30AM Mar 11, 2024Observed: 15.39 ft at 8:00AM Mar 11, 2024Observed: 15.3 ft at 8:30AM Mar 11, 2024Observed: 15.22 ft at 9:00AM Mar 11, 2024Observed: 15.13 ft at 9:30AM Mar 11, 2024Observed: 15.04 ft at 10:00AM Mar 11, 2024Observed: 14.95 ft at 10:30AM Mar 11, 2024Observed: 14.86 ft at 11:00AM Mar 11, 2024Observed: 14.76 ft at 11:30AM Mar 11, 2024Observed: 14.66 ft at 12:00PM Mar 11, 2024Observed: 14.57 ft at 12:30PM Mar 11, 2024Observed: 14.47 ft at 1:00PM Mar 11, 2024Observed: 14.37 ft at 1:30PM Mar 11, 2024Observed: 14.28 ft at 2:00PM Mar 11, 2024Observed: 14.18 ft at 2:30PM Mar 11, 2024Observed: 14.08 ft at 3:00PM Mar 11, 2024Observed: 13.98 ft at 3:30PM Mar 11, 2024Observed: 13.89 ft at 4:00PM Mar 11, 2024Observed: 13.78 ft at 4:30PM Mar 11, 2024Observed: 13.69 ft at 5:00PM Mar 11, 2024Observed: 13.59 ft at 5:30PM Mar 11, 2024Observed: 13.5 ft at 6:00PM Mar 11, 2024Observed: 13.4 ft at 6:30PM Mar 11, 2024Observed: 13.3 ft at 7:00PM Mar 11, 2024Observed: 13.21 ft at 7:30PM Mar 11, 2024Observed: 13.11 ft at 8:00PM Mar 11, 2024Observed: 13.01 ft at 8:30PM Mar 11, 2024Observed: 12.91 ft at 9:00PM Mar 11, 2024Observed: 12.82 ft at 9:30PM Mar 11, 2024Observed: 12.72 ft at 10:00PM Mar 11, 2024Observed: 12.63 ft at 10:30PM Mar 11, 2024Observed: 12.54 ft at 11:00PM Mar 11, 2024Observed: 12.44 ft at 11:30PM Mar 11, 2024Observed: 12.35 ft at 12:00AM Mar 12, 2024Observed: 12.26 ft at 12:30AM Mar 12, 2024Observed: 12.16 ft at 1:00AM Mar 12, 2024Observed: 12.07 ft at 1:30AM Mar 12, 2024Observed: 11.98 ft at 2:00AM Mar 12, 2024Observed: 11.88 ft at 2:30AM Mar 12, 2024Observed: 11.79 ft at 3:00AM Mar 12, 2024Observed: 11.71 ft at 3:30AM Mar 12, 2024Observed: 11.62 ft at 4:00AM Mar 12, 2024Observed: 11.54 ft at 4:30AM Mar 12, 2024Observed: 11.46 ft at 5:00AM Mar 12, 2024Observed: 11.37 ft at 5:30AM Mar 12, 2024Observed: 11.29 ft at 6:00AM Mar 12, 2024Observed: 11.21 ft at 6:30AM Mar 12, 2024Observed: 11.14 ft at 7:00AM Mar 12, 2024Observed: 11.07 ft at 7:30AM Mar 12, 2024Observed: 10.99 ft at 8:00AM Mar 12, 2024Observed: 10.92 ft at 8:30AM Mar 12, 2024Observed: 10.85 ft at 9:00AM Mar 12, 2024Observed: 10.78 ft at 9:30AM Mar 12, 2024Observed: 10.73 ft at 10:00AM Mar 12, 2024Observed: 10.66 ft at 10:30AM Mar 12, 2024Observed: 10.59 ft at 11:00AM Mar 12, 2024Observed: 10.53 ft at 11:30AM Mar 12, 2024Observed: 10.47 ft at 12:00PM Mar 12, 2024Observed: 10.41 ft at 12:30PM Mar 12, 2024Observed: 10.35 ft at 1:00PM Mar 12, 2024Observed: 10.3 ft at 1:30PM Mar 12, 2024Observed: 10.24 ft at 2:00PM Mar 12, 2024Observed: 10.19 ft at 2:30PM Mar 12, 2024Observed: 10.14 ft at 3:00PM Mar 12, 2024Observed: 10.08 ft at 3:30PM Mar 12, 2024Observed: 10.04 ft at 4:00PM Mar 12, 2024Observed: 9.99 ft at 4:30PM Mar 12, 2024Observed: 9.95 ft at 5:00PM Mar 12, 2024Observed: 9.9 ft at 5:30PM Mar 12, 2024Observed: 9.85 ft at 6:00PM Mar 12, 2024Observed: 9.81 ft at 6:30PM Mar 12, 2024Observed: 9.77 ft at 7:00PM Mar 12, 2024Observed: 9.72 ft at 7:30PM Mar 12, 2024Observed: 9.69 ft at 8:00PM Mar 12, 2024Observed: 9.64 ft at 8:30PM Mar 12, 2024Observed: 9.61 ft at 9:00PM Mar 12, 2024Observed: 9.57 ft at 9:30PM Mar 12, 2024Observed: 9.54 ft at 10:00PM Mar 12, 2024Observed: 9.5 ft at 10:30PM Mar 12, 2024Observed: 9.47 ft at 11:00PM Mar 12, 2024Observed: 9.43 ft at 11:30PM Mar 12, 2024Observed: 9.4 ft at 12:00AM Mar 13, 2024Observed: 9.37 ft at 12:30AM Mar 13, 2024Observed: 9.33 ft at 1:00AM Mar 13, 2024Observed: 9.29 ft at 1:30AM Mar 13, 2024Observed: 9.26 ft at 2:00AM Mar 13, 2024Observed: 9.23 ft at 2:30AM Mar 13, 2024Observed: 9.19 ft at 3:00AM Mar 13, 2024Observed: 9.16 ft at 3:30AM Mar 13, 2024Observed: 9.12 ft at 4:00AM Mar 13, 2024Observed: 9.09 ft at 4:30AM Mar 13, 2024Observed: 9.05 ft at 5:00AM Mar 13, 2024Observed: 9.02 ft at 5:30AM Mar 13, 2024Observed: 8.98 ft at 6:00AM Mar 13, 2024Observed: 8.94 ft at 6:30AM Mar 13, 2024Observed: 8.91 ft at 7:00AM Mar 13, 2024Observed: 8.87 ft at 7:30AM Mar 13, 2024Observed: 8.83 ft at 8:00AM Mar 13, 2024Observed: 8.8 ft at 8:30AM Mar 13, 2024Observed: 8.75 ft at 9:00AM Mar 13, 2024Observed: 8.71 ft at 9:30AM Mar 13, 2024Observed: 8.68 ft at 10:00AM Mar 13, 2024Observed: 8.65 ft at 10:30AM Mar 13, 2024Observed: 8.61 ft at 11:00AM Mar 13, 2024Observed: 8.58 ft at 11:30AM Mar 13, 2024Observed: 8.54 ft at 12:00PM Mar 13, 2024Observed: 8.51 ft at 12:30PM Mar 13, 2024Observed: 8.48 ft at 1:00PM Mar 13, 2024Observed: 8.45 ft at 1:30PM Mar 13, 2024Observed: 8.42 ft at 2:00PM Mar 13, 2024Observed: 8.4 ft at 2:30PM Mar 13, 2024Observed: 8.37 ft at 3:00PM Mar 13, 2024Observed: 8.34 ft at 3:30PM Mar 13, 2024Observed: 8.31 ft at 4:00PM Mar 13, 2024Observed: 8.29 ft at 4:30PM Mar 13, 2024Observed: 8.26 ft at 5:00PM Mar 13, 2024Observed: 8.23 ft at 5:30PM Mar 13, 2024Observed: 8.21 ft at 6:00PM Mar 13, 2024Observed: 8.18 ft at 6:30PM Mar 13, 2024Observed: 8.16 ft at 7:00PM Mar 13, 2024Observed: 8.13 ft at 7:30PM Mar 13, 2024Observed: 8.11 ft at 8:00PM Mar 13, 2024Observed: 8.09 ft at 8:30PM Mar 13, 2024Observed: 8.06 ft at 9:00PM Mar 13, 2024Observed: 8.04 ft at 9:30PM Mar 13, 2024Observed: 8.02 ft at 10:00PM Mar 13, 2024Observed: 8 ft at 10:30PM Mar 13, 2024Observed: 7.98 ft at 11:00PM Mar 13, 2024Observed: 7.97 ft at 11:30PM Mar 13, 2024Observed: 7.95 ft at 12:00AM Mar 14, 2024Observed: 7.93 ft at 12:30AM Mar 14, 2024Observed: 7.91 ft at 1:00AM Mar 14, 2024Observed: 7.9 ft at 1:30AM Mar 14, 2024Observed: 7.88 ft at 2:00AM Mar 14, 2024Observed: 7.86 ft at 2:30AM Mar 14, 2024Observed: 7.85 ft at 3:00AM Mar 14, 2024Observed: 7.83 ft at 3:30AM Mar 14, 2024Observed: 7.81 ft at 4:00AM Mar 14, 2024Observed: 7.8 ft at 4:30AM Mar 14, 2024Observed: 7.78 ft at 5:00AM Mar 14, 2024Observed: 7.77 ft at 5:30AM Mar 14, 2024Observed: 7.81 ft at 6:00AM Mar 14, 2024Observed: 7.83 ft at 6:30AM Mar 14, 2024Observed: 7.85 ft at 7:00AM Mar 14, 2024Observed: 7.86 ft at 7:30AM Mar 14, 2024Observed: 7.86 ft at 8:00AM Mar 14, 2024Observed: 7.89 ft at 8:30AM Mar 14, 2024Observed: 7.91 ft at 9:00AM Mar 14, 2024Observed: 7.94 ft at 9:30AM Mar 14, 2024Observed: 7.97 ft at 10:00AM Mar 14, 2024Observed: 7.99 ft at 10:30AM Mar 14, 2024Observed: 8.02 ft at 11:00AM Mar 14, 2024Observed: 8.06 ft at 11:30AM Mar 14, 2024Observed: 8.09 ft at 12:00PM Mar 14, 2024Observed: 8.12 ft at 12:30PM Mar 14, 2024Observed: 8.16 ft at 1:00PM Mar 14, 2024Observed: 8.21 ft at 1:30PM Mar 14, 2024Observed: 8.29 ft at 2:00PM Mar 14, 2024Observed: 8.4 ft at 2:30PM Mar 14, 2024Observed: 8.51 ft at 3:00PM Mar 14, 2024Observed: 8.63 ft at 3:30PM Mar 14, 2024Observed: 8.75 ft at 4:00PM Mar 14, 2024Observed: 8.88 ft at 4:30PM Mar 14, 2024Observed: 9.02 ft at 5:00PM Mar 14, 2024Observed: 9.18 ft at 5:30PM Mar 14, 2024Observed: 9.35 ft at 6:00PM Mar 14, 2024Observed: 9.54 ft at 6:30PM Mar 14, 2024Observed: 9.76 ft at 7:00PM Mar 14, 2024Observed: 9.99 ft at 7:30PM Mar 14, 2024Observed: 10.23 ft at 8:00PM Mar 14, 2024Observed: 10.5 ft at 8:30PM Mar 14, 2024Observed: 10.77 ft at 9:00PM Mar 14, 2024Observed: 11.06 ft at 9:30PM Mar 14, 2024Observed: 11.37 ft at 10:00PM Mar 14, 2024Observed: 11.68 ft at 10:30PM Mar 14, 2024Observed: 12 ft at 11:00PM Mar 14, 2024Observed: 12.33 ft at 11:30PM Mar 14, 2024Observed: 12.66 ft at 12:00AM Mar 15, 2024Observed: 12.99 ft at 12:30AM Mar 15, 2024Observed: 13.3 ft at 1:00AM Mar 15, 2024Observed: 13.59 ft at 1:30AM Mar 15, 2024Observed: 13.89 ft at 2:00AM Mar 15, 2024Observed: 14.17 ft at 2:30AM Mar 15, 2024Observed: 14.41 ft at 3:00AM Mar 15, 2024Observed: 14.65 ft at 3:30AM Mar 15, 2024Observed: 14.88 ft at 4:00AM Mar 15, 2024Observed: 15.11 ft at 4:30AM Mar 15, 2024Observed: 15.32 ft at 5:00AM Mar 15, 2024Observed: 15.51 ft at 5:30AM Mar 15, 2024Observed: 15.71 ft at 6:00AM Mar 15, 2024Observed: 15.88 ft at 6:30AM Mar 15, 2024Observed: 16.04 ft at 7:00AM Mar 15, 2024Observed: 16.2 ft at 7:30AM Mar 15, 2024Observed: 16.33 ft at 8:00AM Mar 15, 2024Observed: 16.46 ft at 8:30AM Mar 15, 2024Observed: 16.6 ft at 9:00AM Mar 15, 2024Observed: 16.71 ft at 9:30AM Mar 15, 2024Observed: 16.82 ft at 10:00AM Mar 15, 2024Observed: 16.92 ft at 10:30AM Mar 15, 2024Observed: 17.02 ft at 11:00AM Mar 15, 2024Observed: 17.11 ft at 11:30AM Mar 15, 2024Observed: 17.19 ft at 12:00PM Mar 15, 2024Observed: 17.29 ft at 12:30PM Mar 15, 2024Observed: 17.34 ft at 1:00PM Mar 15, 2024Observed: 17.43 ft at 1:30PM Mar 15, 2024Observed: 17.49 ft at 2:00PM Mar 15, 2024Observed: 17.56 ft at 2:30PM Mar 15, 2024Observed: 17.63 ft at 3:00PM Mar 15, 2024Observed: 17.68 ft at 3:30PM Mar 15, 2024Observed: 17.74 ft at 4:00PM Mar 15, 2024Observed: 17.8 ft at 4:30PM Mar 15, 2024Observed: 17.86 ft at 5:00PM Mar 15, 2024Observed: 17.91 ft at 5:30PM Mar 15, 2024Observed: 17.96 ft at 6:00PM Mar 15, 2024Observed: 18 ft at 6:30PM Mar 15, 2024Observed: 18.05 ft at 7:00PM Mar 15, 2024Observed: 18.08 ft at 7:30PM Mar 15, 2024Observed: 18.11 ft at 8:00PM Mar 15, 2024Observed: 18.16 ft at 8:30PM Mar 15, 2024Observed: 18.19 ft at 9:00PM Mar 15, 2024Observed: 18.23 ft at 9:30PM Mar 15, 2024Observed: 18.25 ft at 10:00PM Mar 15, 2024Observed: 18.29 ft at 10:30PM Mar 15, 2024Observed: 18.32 ft at 11:00PM Mar 15, 2024Observed: 18.34 ft at 11:30PM Mar 15, 2024Observed: 18.38 ft at 12:00AM Mar 16, 2024Observed: 18.39 ft at 12:30AM Mar 16, 2024Observed: 18.41 ft at 1:00AM Mar 16, 2024Observed: 18.43 ft at 1:30AM Mar 16, 2024Observed: 18.45 ft at 2:00AM Mar 16, 2024Observed: 18.47 ft at 2:30AM Mar 16, 2024Observed: 18.47 ft at 3:00AM Mar 16, 2024Observed: 18.47 ft at 3:30AM Mar 16, 2024Observed: 18.49 ft at 4:00AM Mar 16, 2024Highest Observation: 18.5 ft at 4:30AM Mar 16, 2024Highest Observation: 18.5 ft at 5:00AM Mar 16, 2024Observed: 18.49 ft at 5:30AM Mar 16, 2024Observed: 18.49 ft at 6:00AM Mar 16, 2024Observed: 18.49 ft at 6:30AM Mar 16, 2024Observed: 18.49 ft at 7:00AM Mar 16, 2024Observed: 18.47 ft at 7:30AM Mar 16, 2024Observed: 18.46 ft at 8:00AM Mar 16, 2024Observed: 18.46 ft at 8:30AM Mar 16, 2024Observed: 18.44 ft at 9:00AM Mar 16, 2024Observed: 18.41 ft at 9:30AM Mar 16, 2024Observed: 18.4 ft at 10:00AM Mar 16, 2024Observed: 18.37 ft at 10:30AM Mar 16, 2024Observed: 18.34 ft at 11:00AM Mar 16, 2024Observed: 18.32 ft at 11:30AM Mar 16, 2024Observed: 18.28 ft at 12:00PM Mar 16, 2024Observed: 18.22 ft at 12:30PM Mar 16, 2024Observed: 18.21 ft at 1:00PM Mar 16, 2024Observed: 18.16 ft at 1:30PM Mar 16, 2024Observed: 18.13 ft at 2:00PM Mar 16, 2024Observed: 18.07 ft at 2:30PM Mar 16, 2024Observed: 18.02 ft at 3:00PM Mar 16, 2024Observed: 17.99 ft at 3:30PM Mar 16, 2024Observed: 17.93 ft at 4:00PM Mar 16, 2024Observed: 17.86 ft at 4:30PM Mar 16, 2024Observed: 17.8 ft at 5:00PM Mar 16, 2024Observed: 17.73 ft at 5:30PM Mar 16, 2024Observed: 17.66 ft at 6:00PM Mar 16, 2024Observed: 17.58 ft at 6:30PM Mar 16, 2024Observed: 17.52 ft at 7:00PM Mar 16, 2024Observed: 17.44 ft at 7:30PM Mar 16, 2024Observed: 17.37 ft at 8:00PM Mar 16, 2024Observed: 17.28 ft at 8:30PM Mar 16, 2024Observed: 17.19 ft at 9:00PM Mar 16, 2024Observed: 17.11 ft at 9:30PM Mar 16, 2024Observed: 17.01 ft at 10:00PM Mar 16, 2024Observed: 16.91 ft at 10:30PM Mar 16, 2024Observed: 16.82 ft at 11:00PM Mar 16, 2024Observed: 16.72 ft at 11:30PM Mar 16, 2024Observed: 16.62 ft at 12:00AM Mar 17, 2024Observed: 16.51 ft at 12:30AM Mar 17, 2024Observed: 16.41 ft at 1:00AM Mar 17, 2024Observed: 16.3 ft at 1:30AM Mar 17, 2024Observed: 16.2 ft at 2:00AM Mar 17, 2024Observed: 16.1 ft at 2:30AM Mar 17, 2024Observed: 15.99 ft at 3:00AM Mar 17, 2024Observed: 15.87 ft at 3:30AM Mar 17, 2024Observed: 15.77 ft at 4:00AM Mar 17, 2024Observed: 15.65 ft at 4:30AM Mar 17, 2024Observed: 15.54 ft at 5:00AM Mar 17, 2024Observed: 15.43 ft at 5:30AM Mar 17, 2024Observed: 15.33 ft at 6:00AM Mar 17, 2024Observed: 15.22 ft at 6:30AM Mar 17, 2024Observed: 15.1 ft at 7:00AM Mar 17, 2024Observed: 15 ft at 7:30AM Mar 17, 2024Observed: 14.89 ft at 8:00AM Mar 17, 2024Observed: 14.78 ft at 8:30AM Mar 17, 2024Observed: 14.67 ft at 9:00AM Mar 17, 2024Observed: 14.57 ft at 9:30AM Mar 17, 2024Observed: 14.46 ft at 10:00AM Mar 17, 2024Observed: 14.36 ft at 10:30AM Mar 17, 2024Observed: 14.26 ft at 11:00AM Mar 17, 2024Observed: 14.15 ft at 11:30AM Mar 17, 2024Observed: 14.05 ft at 12:00PM Mar 17, 2024Observed: 13.95 ft at 12:30PM Mar 17, 2024Observed: 13.85 ft at 1:00PM Mar 17, 2024Observed: 13.76 ft at 1:30PM Mar 17, 2024Observed: 13.66 ft at 2:00PM Mar 17, 2024Observed: 13.58 ft at 2:30PM Mar 17, 2024Observed: 13.47 ft at 3:00PM Mar 17, 2024Observed: 13.39 ft at 3:30PM Mar 17, 2024Observed: 13.29 ft at 4:00PM Mar 17, 2024Observed: 13.2 ft at 4:30PM Mar 17, 2024Observed: 13.12 ft at 5:00PM Mar 17, 2024Observed: 13.03 ft at 5:30PM Mar 17, 2024Observed: 12.94 ft at 6:00PM Mar 17, 2024Observed: 12.85 ft at 6:30PM Mar 17, 2024Observed: 12.75 ft at 7:00PM Mar 17, 2024Observed: 12.67 ft at 7:30PM Mar 17, 2024Observed: 12.59 ft at 8:00PM Mar 17, 2024Observed: 12.5 ft at 8:30PM Mar 17, 2024Observed: 12.42 ft at 9:00PM Mar 17, 2024Observed: 12.33 ft at 9:30PM Mar 17, 2024Observed: 12.24 ft at 10:00PM Mar 17, 2024Observed: 12.16 ft at 10:30PM Mar 17, 2024Observed: 12.07 ft at 11:00PM Mar 17, 2024Observed: 11.99 ft at 11:30PM Mar 17, 2024Observed: 11.91 ft at 12:00AM Mar 18, 2024Observed: 11.83 ft at 12:30AM Mar 18, 2024Observed: 11.75 ft at 1:00AM Mar 18, 2024Observed: 11.68 ft at 1:30AM Mar 18, 2024Observed: 11.6 ft at 2:00AM Mar 18, 2024Observed: 11.53 ft at 2:30AM Mar 18, 2024Observed: 11.45 ft at 3:00AM Mar 18, 2024Observed: 11.38 ft at 3:30AM Mar 18, 2024Observed: 11.32 ft at 4:00AM Mar 18, 2024Observed: 11.25 ft at 4:30AM Mar 18, 2024Observed: 11.17 ft at 5:00AM Mar 18, 2024Observed: 11.11 ft at 5:30AM Mar 18, 2024Observed: 11.05 ft at 6:00AM Mar 18, 2024Observed: 10.99 ft at 6:30AM Mar 18, 2024Observed: 10.93 ft at 7:00AM Mar 18, 2024Observed: 10.87 ft at 7:30AM Mar 18, 2024Observed: 10.81 ft at 8:00AM Mar 18, 2024Observed: 10.76 ft at 8:30AM Mar 18, 2024Observed: 10.7 ft at 9:00AM Mar 18, 2024Observed: 10.65 ft at 9:30AM Mar 18, 2024Observed: 10.59 ft at 10:00AM Mar 18, 2024Observed: 10.54 ft at 10:30AM Mar 18, 2024Observed: 10.49 ft at 11:00AM Mar 18, 2024Observed: 10.43 ft at 11:30AM Mar 18, 2024Observed: 10.39 ft at 12:00PM Mar 18, 2024Observed: 10.34 ft at 12:30PM Mar 18, 2024Observed: 10.29 ft at 1:00PM Mar 18, 2024Observed: 10.25 ft at 1:30PM Mar 18, 2024Observed: 10.2 ft at 2:00PM Mar 18, 2024Observed: 10.16 ft at 2:30PM Mar 18, 2024Observed: 10.12 ft at 3:00PM Mar 18, 2024Observed: 10.07 ft at 3:30PM Mar 18, 2024Observed: 10.02 ft at 4:00PM Mar 18, 2024Observed: 9.99 ft at 4:30PM Mar 18, 2024Observed: 9.95 ft at 5:00PM Mar 18, 2024Observed: 9.91 ft at 5:30PM Mar 18, 2024Observed: 9.87 ft at 6:00PM Mar 18, 2024Observed: 9.83 ft at 6:30PM Mar 18, 2024Observed: 9.79 ft at 7:00PM Mar 18, 2024Observed: 9.76 ft at 7:30PM Mar 18, 2024Observed: 9.73 ft at 8:00PM Mar 18, 2024Observed: 9.69 ft at 8:30PM Mar 18, 2024Observed: 9.66 ft at 9:00PM Mar 18, 2024Observed: 9.62 ft at 9:30PM Mar 18, 2024Observed: 9.59 ft at 10:00PM Mar 18, 2024Observed: 9.55 ft at 10:30PM Mar 18, 2024Observed: 9.53 ft at 11:00PM Mar 18, 2024Observed: 9.5 ft at 11:30PM Mar 18, 2024Highest Forecast: 9.4 ft 2:00AM Mar 19, 2024Forecast: 9 ft 8:00AM Mar 19, 2024Forecast: 8.7 ft 2:00PM Mar 19, 2024Forecast: 8.4 ft 8:00PM Mar 19, 2024Forecast: 8.1 ft 2:00AM Mar 20, 2024Forecast: 7.9 ft 8:00AM Mar 20, 2024Forecast: 7.7 ft 2:00PM Mar 20, 2024Forecast: 7.5 ft 8:00PM Mar 20, 2024Forecast: 7.4 ft 2:00AM Mar 21, 2024Forecast: 7.3 ft 8:00AM Mar 21, 2024Forecast: 7.3 ft 2:00PM Mar 21, 2024Forecast: 7.2 ft 8:00PM Mar 21, 2024Forecast: 7.2 ft 2:00AM Mar 22, 2024Forecast: 7.1 ft 8:00AM Mar 22, 2024Forecast: 7.1 ft 2:00PM Mar 22, 2024Forecast: 7 ft 8:00PM Mar 22, 2024Forecast: 6.9 ft 2:00AM Mar 23, 2024Forecast: 6.8 ft 8:00AM Mar 23, 2024Jump to USGS siteOTTO1(plotting HGIRG) Graph Created (12:38AM Mar 19, 2024)ObservedForecast (issued 9:35AM Mar 18)Latest observed value: 9.5 ft at 11:30 PM EDT 18-Mar-2024. Flood Stage is 23 ft
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Datum: NAVD88
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.

NOTE: Stage may be affected by ice during winter months.

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
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
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(P): Preliminary values subject to further review.

Recent Crests
(1) 23.80 ft on 05/11/2021 (P)
(2) 25.17 ft on 05/20/2020
(3) 25.32 ft on 04/27/2019
(4) 22.23 ft on 02/22/2018
(5) 27.55 ft on 07/15/2017
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
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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
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: 41.017000° N, Longitude: 84.046900° 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. Gauge zero transitioned from 699 NGVD29 to 698.43 NAVD88 on Oct 1, 2009. 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) 10 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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