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Hydrograph River at a Glance Download
Maumee River at Napoleon Stage (ft)Flow (kcfs)National Weather Service Northern IndianaCPBO1(plotting HGIRG) Graph Created (10:37PM Nov 29, 2021)Flood Stage is 12 ft
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Datum: NAVD88
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: Gauge awaiting repair - automated readings are not available at this time.

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

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Upstream Gauge - near Defiance (Independence Dam) Upstream Gauge Downstream Gauge Downstream Gauge - at Grand Rapids
Flood Categories (in feet)
Major Flood Stage: 17
Moderate Flood Stage: 15
Flood Stage: 12
Action Stage: 10
Low Stage (in feet): -9999

Historic Crests
(1) 25.00 ft on 03/27/1913
(2) 19.50 ft on 02/11/1959
(3) 19.50 ft on 02/14/1918
(4) 18.80 ft on 03/02/1910
(5) 18.00 ft on 03/20/1912
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.21 ft on 02/25/2018 (P)
(2) 16.26 ft on 06/29/2015
(3) 15.50 ft on 12/01/2011
(4) 15.40 ft on 05/27/2011
(5) 16.70 ft on 03/11/2009
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -2.90 ft on 11/16/1922
(2) 0.84 ft on 10/07/2010
(3) 0.87 ft on 10/29/2008
Show More Low Water Records

For more information on your flood risk go to

Zoom Level:16
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Gauge LocationGauge Map Marker
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
27 Record flooding is underway throughout the eastern sections of Napoleon and all along the tributaries flowing into the Maumee River.
20 Flood water begins to threaten residents along the following streets: Fairview, Oak, Walnut, First, Second and from Route 8 to Maumee Street. Serious backwater flooding occurs along all tributaries.
17 Massive flooding will occur. Residents living along the Maumee and its tributaries should prepare for extensive flood losses.
15 Flood water will threaten some buildings in the east end of Napoleon and cause several roads to become impassible.
12.5 Recreational campgrounds near Napoleon begin to flood.
12 Flooding of farm land and possibly some secondary roads near the river begins.
(1) Downstream view from downtown Napoleon
(2) Upstream view from downtown Napoleon
About This Location Collapse

Latitude: 41.383056° N, Longitude: 84.128611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 12 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 636.71 ft 648.71 ft 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  
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) 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.

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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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