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      Blanchard River at Ottawa, OH (OTTO1)


      Data Type




      Inundation Levels
      NAVD88 Stage

      Record Crest: 33.3 ft
      729.831.4

      Major Flooding Begins

      728.430.0
      727.429.0
      726.428.0

      Moderate Flooding Begins

      725.427.0
      724.426.0
      723.425.0
      722.424.0

      Minor Flooding Begins

      721.423.0
      720.422.0
      719.421.0

      Near Flooding Begins

      718.420.0

      Below Flooding Begins

      * = Extended rating
      Weather Forecast Office Northern Indiana, IN Ohio River Forecast Center
      Hydrograph River at a Glance Download Inundation
      Mapping
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      Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

      Current Stage:
      6.6 ft at 12/11/2019 04:30:00 UTC
      Selected Inundation
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      North Arrow

      Inundation Legend
      Depth in feet
      USGS Gauge Location Gauge Location
      What is UTC time? Map Help

      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.

      Gauge Information Collapse

      Map Overlays

      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) 4.63 ft on 06/29/2012

      Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

      Site-specific information:
      These inundation maps for the Blanchard River at Ottawa were developed by the Indiana USGS, and made available on this site through funding by the Village of Ottawa and the National Weather Service.

      Flood Impacts 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
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      Page last modified: 6-Nov-2019 2:45 PM
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      Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.
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