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Blanchard River at Findlay, OH (FDYO1)

Data Type

Inundation Levels
NAVD88 Stage

Record Crest: 18.5 ft

Major Flooding Begins


Moderate Flooding Begins


Minor Flooding Begins


Near Flooding Begins


Below Flooding Begins

* = Extended rating
Weather Forecast Office Cleveland, OH Ohio River Forecast Center
Hydrograph River at a Glance Download Inundation

Click on mapped inundation to see water depth values for that location, or hold shift and drag to zoom to area.

Current Stage:
1.2 ft at 12/10/2023 04:00:00 UTC
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Inundation Legend
Depth in feet
USGS Gauge Location Gauge Location
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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.

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Map Overlays

Flood Categories (in feet)
Major Flood Stage: 14.5
Moderate Flood Stage: 13.5
Flood Stage: 12
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 18.50 ft on 03/25/1913
(2) 18.46 ft on 08/22/2007
(3) 17.43 ft on 06/14/1981
(4) 16.76 ft on 02/11/1959
(5) 16.53 ft on 07/14/2017
(6) 16.50 ft on 02/07/2008
(7) 16.42 ft on 03/01/2011
(8) 16.10 ft on 01/22/1959
(9) 15.58 ft on 12/22/2013
(10) 15.42 ft on 06/02/1997
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 14.19 ft on 05/11/2021 (P)
(2) 11.81 ft on 03/30/2020 (P)
(3) 14.06 ft on 06/02/2019
(4) 14.06 ft on 06/02/2019
(5) 13.04 ft on 11/19/2017
(6) 16.53 ft on 07/14/2017
(7) 12.37 ft on 05/06/2017
(8) 13.02 ft on 06/17/2015
(9) 15.58 ft on 12/22/2013
(10) 12.43 ft on 07/11/2013
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.60 ft on 09/12/1976
(2) 0.68 ft on 10/17/1965
(3) 0.74 ft on 09/18/1968
(4) 0.80 ft on 09/21/1980

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:
Blanchard River at Findlay Disclaimer: (Note Flood Categories updated on 3/1/2021) Flood boundaries shown reflect unobstructed flooding or backwater from only the Blanchard River. Additional areas may be flooded if the river becomes obstructed or as a result of flooding from tributary streams. Residents living near tributaries of the Blanchard River should be particularly cautious due to added uncertainty associated with the potential for flooding from multiple sources.

Extended rating:
Rating Curve Extension - The Rating Curve Extension is calculated by using either a linear, logarithmic, or hydraulic technique to extend the rating curve above the currently established relationship between stage and flow.

Flood Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
24 Gauge overtopped.
18.5 High water mark of the 1913 and 2007 floods.
17.5 Flooding can be expected from Westerfield Drive to County Road 236 along the Blanchard River. Flooding can also be expected along Eagle and Lye Creeks between State Route 15 and the Blanchard River. About three quarters of the city inundated.
17 FEMA 0.2 percent flood level. Hundreds of properties along the Blanchard River and tributaries flooded.
16 FEMA 1 percent flood level. Flood waters extend from West Main Cross Street near Interstate 75 ramp. Numerous properties between the river and West and East Cross Street impacted. Water extends further north of the river to Frazier Street, Broad Avenue, and Center Street. Blanchard River flood waters will combine with backwater from the Lye and Eagle Creeks.
15.5 Several businesses impacted downtown, with many roads near the river closed. County Road 236 to State Route 568 inundated. The following streets are likely to be flooded, Main Cross Street from Western to Township Road 180, Broad Street, streets along Eagle Creek from Central to Rockside and streets along Lye Creek from Wedgewood to Strong Avenue.
15 West Main Cross Street flooded and detours likely around downtown. East Main Cross Street impassable. Flood waters extending further north of the river on Blanchard Street to Center Street. Defiance Avenue through County Road 223 with water impacting the property of Wal Mart.
14.5 Major flooding blocking Martin Luther King Parkway and Blanchard Avenue. Several other low lying roads flooded along the river. Travel in and out of the city becomes difficult.
14 Flood waters impacting Martin Luther King Junior Parkway from Clinton Court to Blanchard Street. Backwater issues from the Lye and Eagle Creeks likely if those tributaries are also running high.
13.5 Water impacts River Street and Apple Alley on the west side of Findlay, Blanchard Street between Sandusky and Main Cross, and several streets south of Clinton Court near Riverside Park.
13 North Cory flooded from Washington to High Street including Meeks and Seneca Avenue. Roads south of Clinton Court flooded between South Blanchard Street and McManness Avenue. East Main Cross from Marcelle Avenue to Bright Road. County Road 236 near Little Red Schoolhouse to County Road 568.
12 Flooding impacts areas near Riverside Park and East Main Cross Street in the City of Findlay. Flooding on County Road 223 and portions of Howard Street. Water approaching some properties on Liberty Street and Apple Alley.
11 East Main Cross Street flooded under the Osborne Bridge. Minor flooding of a golf course near Country Club Drive.
10 South River Road flooded from Broad Avenue to Stanford Parkways. County Road 140 west of the City is inundated.
9 River elevated and coming out of banks in a few low lying locations. Howard Street flooded from Broad Avenue to near backside of a shopping center.
Other Data Sources Collapse
Additional Information Collapse
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) 10 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

Note: Use the official hydrograph at the top of this web page for river levels within the next 48 hours.

See the Product Description Document link for more details on the interpretation of the 10 day graphics.

Click individual graphics to enlarge.

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Page last modified: 2-Nov-2020 7:34 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.