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Hydrograph River at a Glance Download
Illinois River at Ottawa Stage (ft)Observed: 459.85 ft at 11:30PM Apr 15, 2014Observed: 459.85 ft at 11:45PM Apr 15, 2014Observed: 459.85 ft at 12:00AM Apr 16, 2014Observed: 459.85 ft at 12:15AM Apr 16, 2014Observed: 459.85 ft at 12:30AM Apr 16, 2014Observed: 459.85 ft at 12:45AM Apr 16, 2014Observed: 459.85 ft at 1:00AM Apr 16, 2014Observed: 459.85 ft at 1:15AM Apr 16, 2014Observed: 459.85 ft at 1:30AM Apr 16, 2014Observed: 459.85 ft at 1:45AM Apr 16, 2014Observed: 459.85 ft at 2:00AM Apr 16, 2014Observed: 459.85 ft at 2:15AM Apr 16, 2014Observed: 459.85 ft at 2:30AM Apr 16, 2014Observed: 459.85 ft at 2:45AM Apr 16, 2014Observed: 459.85 ft at 3:00AM Apr 16, 2014Observed: 459.85 ft at 3:15AM Apr 16, 2014Observed: 459.85 ft at 3:30AM Apr 16, 2014Observed: 459.85 ft at 3:45AM Apr 16, 2014Observed: 459.85 ft at 4:00AM Apr 16, 2014Observed: 459.85 ft at 4:15AM Apr 16, 2014Observed: 459.85 ft at 4:30AM Apr 16, 2014Observed: 459.85 ft at 4:45AM Apr 16, 2014Observed: 459.85 ft at 5:00AM Apr 16, 2014Observed: 459.85 ft at 5:15AM Apr 16, 2014Observed: 459.85 ft at 5:30AM Apr 16, 2014Observed: 459.85 ft at 5:45AM Apr 16, 2014Observed: 459.85 ft at 6:00AM Apr 16, 2014Observed: 459.85 ft at 6:15AM Apr 16, 2014Observed: 459.85 ft at 6:30AM Apr 16, 2014Observed: 459.85 ft at 6:45AM Apr 16, 2014Observed: 459.85 ft at 7:00AM Apr 16, 2014Observed: 459.85 ft at 7:15AM Apr 16, 2014Observed: 459.85 ft at 7:30AM Apr 16, 2014Observed: 459.85 ft at 7:45AM Apr 16, 2014Observed: 459.85 ft at 8:00AM Apr 16, 2014Observed: 459.85 ft at 8:15AM Apr 16, 2014Observed: 459.85 ft at 8:30AM Apr 16, 2014Observed: 459.85 ft at 8:45AM Apr 16, 2014Observed: 459.85 ft at 9:00AM Apr 16, 2014Observed: 459.85 ft at 9:15AM Apr 16, 2014Observed: 459.85 ft at 9:30AM Apr 16, 2014Observed: 459.85 ft at 9:45AM Apr 16, 2014Observed: 459.85 ft at 10:00AM Apr 16, 2014Observed: 459.85 ft at 10:15AM Apr 16, 2014Observed: 459.86 ft at 10:30AM Apr 16, 2014Observed: 459.86 ft at 10:45AM Apr 16, 2014Observed: 459.86 ft at 11:00AM Apr 16, 2014Observed: 459.86 ft at 11:15AM Apr 16, 2014Observed: 459.86 ft at 11:30AM Apr 16, 2014Observed: 459.86 ft at 11:45AM Apr 16, 2014Observed: 459.86 ft at 12:00PM Apr 16, 2014Observed: 459.86 ft at 12:15PM Apr 16, 2014Observed: 459.86 ft at 12:30PM Apr 16, 2014Observed: 459.86 ft at 12:45PM Apr 16, 2014Observed: 459.86 ft at 1:00PM Apr 16, 2014Observed: 459.86 ft at 1:15PM Apr 16, 2014Observed: 459.86 ft at 1:30PM Apr 16, 2014Observed: 459.86 ft at 1:45PM Apr 16, 2014Observed: 459.87 ft at 2:00PM Apr 16, 2014Observed: 459.88 ft at 2:15PM Apr 16, 2014Observed: 459.87 ft at 2:30PM Apr 16, 2014Observed: 459.87 ft at 2:45PM Apr 16, 2014Observed: 459.87 ft at 3:00PM Apr 16, 2014Observed: 459.87 ft at 3:15PM Apr 16, 2014Observed: 459.87 ft at 3:30PM Apr 16, 2014Observed: 459.88 ft at 3:45PM Apr 16, 2014Observed: 459.88 ft at 4:00PM Apr 16, 2014Observed: 459.88 ft at 4:15PM Apr 16, 2014Observed: 459.87 ft at 4:30PM Apr 16, 2014Observed: 459.87 ft at 4:45PM Apr 16, 2014Observed: 459.86 ft at 5:00PM Apr 16, 2014Observed: 459.86 ft at 5:15PM Apr 16, 2014Observed: 459.87 ft at 5:30PM Apr 16, 2014Observed: 459.88 ft at 5:45PM Apr 16, 2014Highest Observation: 459.89 ft at 6:00PM Apr 16, 2014Observed: 459.88 ft at 6:15PM Apr 16, 2014Observed: 459.88 ft at 6:30PM Apr 16, 2014Observed: 459.87 ft at 6:45PM Apr 16, 2014Observed: 459.87 ft at 7:00PM Apr 16, 2014Observed: 459.86 ft at 7:15PM Apr 16, 2014Observed: 459.86 ft at 7:30PM Apr 16, 2014Observed: 459.86 ft at 7:45PM Apr 16, 2014Observed: 459.88 ft at 8:00PM Apr 16, 2014Observed: 459.87 ft at 8:15PM Apr 16, 2014Observed: 459.86 ft at 8:30PM Apr 16, 2014Observed: 459.86 ft at 8:45PM Apr 16, 2014Observed: 459.86 ft at 9:00PM Apr 16, 2014Observed: 459.85 ft at 9:15PM Apr 16, 2014Observed: 459.85 ft at 9:30PM Apr 16, 2014Observed: 459.85 ft at 9:45PM Apr 16, 2014Observed: 459.86 ft at 10:00PM Apr 16, 2014Observed: 459.85 ft at 10:15PM Apr 16, 2014Observed: 459.87 ft at 10:30PM Apr 16, 2014Observed: 459.86 ft at 10:45PM Apr 16, 2014Observed: 459.86 ft at 11:00PM Apr 16, 2014Observed: 459.86 ft at 11:15PM Apr 16, 2014Observed: 459.85 ft at 11:30PM Apr 16, 2014Observed: 459.85 ft at 11:45PM Apr 16, 2014Observed: 459.85 ft at 12:00AM Apr 17, 2014Observed: 459.85 ft at 12:15AM Apr 17, 2014Observed: 459.85 ft at 12:30AM Apr 17, 2014Observed: 459.85 ft at 12:45AM Apr 17, 2014Observed: 459.85 ft at 1:00AM Apr 17, 2014Observed: 459.85 ft at 1:15AM Apr 17, 2014Observed: 459.85 ft at 1:30AM Apr 17, 2014Observed: 459.85 ft at 1:45AM Apr 17, 2014Observed: 459.85 ft at 2:00AM Apr 17, 2014Observed: 459.85 ft at 2:15AM Apr 17, 2014Observed: 459.86 ft at 2:30AM Apr 17, 2014Observed: 459.87 ft at 2:45AM Apr 17, 2014Observed: 459.86 ft at 3:00AM Apr 17, 2014Observed: 459.86 ft at 3:15AM Apr 17, 2014Observed: 459.85 ft at 3:30AM Apr 17, 2014Observed: 459.85 ft at 3:45AM Apr 17, 2014Observed: 459.86 ft at 4:00AM Apr 17, 2014Observed: 459.85 ft at 4:15AM Apr 17, 2014Observed: 459.85 ft at 4:30AM Apr 17, 2014Observed: 459.85 ft at 4:45AM Apr 17, 2014Observed: 459.85 ft at 5:00AM Apr 17, 2014Observed: 459.85 ft at 5:15AM Apr 17, 2014Observed: 459.85 ft at 5:30AM Apr 17, 2014Observed: 459.85 ft at 5:45AM Apr 17, 2014Observed: 459.85 ft at 6:00AM Apr 17, 2014Observed: 459.85 ft at 6:15AM Apr 17, 2014Observed: 459.85 ft at 6:30AM Apr 17, 2014Observed: 459.85 ft at 6:45AM Apr 17, 2014Observed: 459.85 ft at 7:00AM Apr 17, 2014Observed: 459.85 ft at 7:15AM Apr 17, 2014Observed: 459.85 ft at 7:30AM Apr 17, 2014Observed: 459.85 ft at 7:45AM Apr 17, 2014Observed: 459.87 ft at 8:00AM Apr 17, 2014Observed: 459.86 ft at 8:15AM Apr 17, 2014Observed: 459.86 ft at 8:30AM Apr 17, 2014Observed: 459.86 ft at 8:45AM Apr 17, 2014Observed: 459.86 ft at 9:00AM Apr 17, 2014Observed: 459.86 ft at 9:15AM Apr 17, 2014Observed: 459.86 ft at 9:30AM Apr 17, 2014Observed: 459.86 ft at 9:45AM Apr 17, 2014Observed: 459.86 ft at 10:00AM Apr 17, 2014Observed: 459.86 ft at 10:15AM Apr 17, 2014Observed: 459.86 ft at 10:30AM Apr 17, 2014Observed: 459.86 ft at 10:45AM Apr 17, 2014Observed: 459.86 ft at 11:00AM Apr 17, 2014Observed: 459.86 ft at 11:15AM Apr 17, 2014Observed: 459.86 ft at 11:30AM Apr 17, 2014Observed: 459.86 ft at 11:45AM Apr 17, 2014Observed: 459.86 ft at 12:00PM Apr 17, 2014Observed: 459.86 ft at 12:15PM Apr 17, 2014Observed: 459.86 ft at 12:30PM Apr 17, 2014Observed: 459.86 ft at 12:45PM Apr 17, 2014Observed: 459.87 ft at 1:00PM Apr 17, 2014Observed: 459.87 ft at 1:15PM Apr 17, 2014Observed: 459.86 ft at 1:30PM Apr 17, 2014Observed: 459.86 ft at 1:45PM Apr 17, 2014Observed: 459.86 ft at 2:00PM Apr 17, 2014Observed: 459.86 ft at 2:15PM Apr 17, 2014Observed: 459.86 ft at 2:30PM Apr 17, 2014Observed: 459.86 ft at 2:45PM Apr 17, 2014Observed: 459.86 ft at 3:00PM Apr 17, 2014Observed: 459.86 ft at 3:15PM Apr 17, 2014Observed: 459.86 ft at 3:30PM Apr 17, 2014Observed: 459.86 ft at 3:45PM Apr 17, 2014Observed: 459.86 ft at 4:00PM Apr 17, 2014Observed: 459.86 ft at 4:15PM Apr 17, 2014Observed: 459.86 ft at 4:30PM Apr 17, 2014Observed: 459.86 ft at 4:45PM Apr 17, 2014Observed: 459.86 ft at 5:00PM Apr 17, 2014Observed: 459.86 ft at 5:15PM Apr 17, 2014Observed: 459.86 ft at 5:30PM Apr 17, 2014Observed: 459.86 ft at 5:45PM Apr 17, 2014Observed: 459.86 ft at 6:00PM Apr 17, 2014Observed: 459.86 ft at 6:15PM Apr 17, 2014Observed: 459.86 ft at 6:30PM Apr 17, 2014Observed: 459.86 ft at 6:45PM Apr 17, 2014Observed: 459.86 ft at 7:00PM Apr 17, 2014Observed: 459.86 ft at 7:15PM Apr 17, 2014Observed: 459.86 ft at 7:30PM Apr 17, 2014Observed: 459.86 ft at 7:45PM Apr 17, 2014Observed: 459.86 ft at 8:00PM Apr 17, 2014Observed: 459.86 ft at 8:15PM Apr 17, 2014Observed: 459.86 ft at 8:30PM Apr 17, 2014Observed: 459.86 ft at 8:45PM Apr 17, 2014Observed: 459.86 ft at 9:00PM Apr 17, 2014Observed: 459.86 ft at 9:15PM Apr 17, 2014Observed: 459.86 ft at 9:30PM Apr 17, 2014Observed: 459.86 ft at 9:45PM Apr 17, 2014Observed: 459.86 ft at 10:00PM Apr 17, 2014Observed: 459.86 ft at 10:15PM Apr 17, 2014Observed: 459.86 ft at 10:30PM Apr 17, 2014Observed: 459.86 ft at 10:45PM Apr 17, 2014Observed: 459.85 ft at 11:00PM Apr 17, 2014Observed: 459.85 ft at 11:15PM Apr 17, 2014Observed: 459.86 ft at 11:30PM Apr 17, 2014Observed: 459.86 ft at 11:45PM Apr 17, 2014Observed: 459.85 ft at 12:00AM Apr 18, 2014Observed: 459.87 ft at 12:15AM Apr 18, 2014Observed: 459.86 ft at 12:30AM Apr 18, 2014Observed: 459.86 ft at 12:45AM Apr 18, 2014Observed: 459.86 ft at 1:00AM Apr 18, 2014Observed: 459.85 ft at 1:15AM Apr 18, 2014Observed: 459.85 ft at 1:30AM Apr 18, 2014Observed: 459.85 ft at 1:45AM Apr 18, 2014Observed: 459.86 ft at 2:00AM Apr 18, 2014Observed: 459.86 ft at 2:15AM Apr 18, 2014Observed: 459.86 ft at 2:30AM Apr 18, 2014Observed: 459.85 ft at 2:45AM Apr 18, 2014Observed: 459.85 ft at 3:00AM Apr 18, 2014Observed: 459.85 ft at 3:15AM Apr 18, 2014Observed: 459.85 ft at 3:30AM Apr 18, 2014Observed: 459.85 ft at 3:45AM Apr 18, 2014Observed: 459.85 ft at 4:00AM Apr 18, 2014Observed: 459.85 ft at 4:15AM Apr 18, 2014Observed: 459.85 ft at 4:30AM Apr 18, 2014Observed: 459.85 ft at 4:45AM Apr 18, 2014Observed: 459.85 ft at 5:00AM Apr 18, 2014Observed: 459.85 ft at 5:15AM Apr 18, 2014Observed: 459.85 ft at 5:30AM Apr 18, 2014Observed: 459.85 ft at 5:45AM Apr 18, 2014Observed: 459.85 ft at 6:00AM Apr 18, 2014Observed: 459.85 ft at 6:15AM Apr 18, 2014Observed: 459.87 ft at 6:30AM Apr 18, 2014Observed: 459.86 ft at 6:45AM Apr 18, 2014Observed: 459.87 ft at 7:00AM Apr 18, 2014Observed: 459.86 ft at 7:15AM Apr 18, 2014Observed: 459.87 ft at 7:30AM Apr 18, 2014Observed: 459.86 ft at 7:45AM Apr 18, 2014Observed: 459.86 ft at 8:00AM Apr 18, 2014Observed: 459.86 ft at 8:15AM Apr 18, 2014Observed: 459.86 ft at 8:30AM Apr 18, 2014Observed: 459.86 ft at 8:45AM Apr 18, 2014Observed: 459.86 ft at 9:00AM Apr 18, 2014Observed: 459.86 ft at 9:15AM Apr 18, 2014Observed: 459.86 ft at 9:30AM Apr 18, 2014Observed: 459.86 ft at 9:45AM Apr 18, 2014Observed: 459.86 ft at 10:00AM Apr 18, 2014Observed: 459.86 ft at 10:15AM Apr 18, 2014Observed: 459.86 ft at 10:30AM Apr 18, 2014Observed: 459.86 ft at 10:45AM Apr 18, 2014Observed: 459.86 ft at 11:00AM Apr 18, 2014Observed: 459.86 ft at 11:15AM Apr 18, 2014Observed: 459.86 ft at 11:30AM Apr 18, 2014Observed: 459.86 ft at 11:45AM Apr 18, 2014Observed: 459.86 ft at 12:00PM Apr 18, 2014Observed: 459.86 ft at 12:15PM Apr 18, 2014Observed: 459.86 ft at 12:30PM Apr 18, 2014Observed: 459.86 ft at 12:45PM Apr 18, 2014Observed: 459.86 ft at 1:00PM Apr 18, 2014Observed: 459.86 ft at 1:15PM Apr 18, 2014Observed: 459.86 ft at 1:30PM Apr 18, 2014Observed: 459.86 ft at 1:45PM Apr 18, 2014Observed: 459.86 ft at 2:00PM Apr 18, 2014Observed: 459.86 ft at 2:15PM Apr 18, 2014Observed: 459.86 ft at 2:30PM Apr 18, 2014Observed: 459.86 ft at 2:45PM Apr 18, 2014Observed: 459.86 ft at 3:00PM Apr 18, 2014Observed: 459.86 ft at 3:15PM Apr 18, 2014Observed: 459.86 ft at 3:30PM Apr 18, 2014Observed: 459.86 ft at 3:45PM Apr 18, 2014Observed: 459.86 ft at 4:00PM Apr 18, 2014Observed: 459.86 ft at 4:15PM Apr 18, 2014Observed: 459.86 ft at 4:30PM Apr 18, 2014Observed: 459.86 ft at 4:45PM Apr 18, 2014Observed: 459.86 ft at 5:00PM Apr 18, 2014Observed: 459.86 ft at 5:15PM Apr 18, 2014Observed: 459.86 ft at 5:30PM Apr 18, 2014Observed: 459.86 ft at 5:45PM Apr 18, 2014Observed: 459.86 ft at 6:00PM Apr 18, 2014Observed: 459.86 ft at 6:15PM Apr 18, 2014Observed: 459.86 ft at 6:30PM Apr 18, 2014Observed: 459.86 ft at 6:45PM Apr 18, 2014Observed: 459.87 ft at 7:00PM Apr 18, 2014Observed: 459.88 ft at 7:15PM Apr 18, 2014Observed: 459.87 ft at 7:30PM Apr 18, 2014Observed: 459.87 ft at 7:45PM Apr 18, 2014Observed: 459.87 ft at 8:00PM Apr 18, 2014Observed: 459.88 ft at 8:15PM Apr 18, 2014Highest Observation: 459.89 ft at 8:30PM Apr 18, 2014Observed: 459.87 ft at 8:45PM Apr 18, 2014Observed: 459.88 ft at 9:00PM Apr 18, 2014Observed: 459.87 ft at 9:15PM Apr 18, 2014Observed: 459.86 ft at 9:30PM Apr 18, 2014Observed: 459.86 ft at 9:45PM Apr 18, 2014Observed: 459.86 ft at 10:00PM Apr 18, 2014Observed: 459.86 ft at 10:15PM Apr 18, 2014Observed: 459.86 ft at 10:30PM Apr 18, 2014US Army Corps of EngineersOTWI2(plotting HGIRG) Graph Created (11:20PM Apr 18, 2014)ObservedLatest observed value: 459.86 ft at 10:30 PM CDT 18-Apr-2014. Flood Stage is 463 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

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

Return to Area Map
 
Upstream Gauge - at Marseilles lock/dam Upstream Gauge Downstream Gauge Downstream Gauge - at Starved Rock lock/dam
Flood Categories (in feet)
Major Flood Stage:469
Moderate Flood Stage:466
Flood Stage:463
Action Stage:461

Historical Crests
(1) 473.72 ft on 04/19/2013
(2) 472.21 ft on 09/16/2008
(3) 470.23 ft on 03/11/2009
(4) 468.87 ft on 12/29/2008
(5) 468.00 ft on 05/13/2002
Show More Historical Crests

Low Water Records
Currently none available.
Zoom Level: 16
Gauge Location
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
476 Top of Illinois River levee at Ottawa High School.
474.5 Top of Fox River levee at Ottawa High School.
472.2 Top of Illinois River levee at city of Ottawa waste water treatment plant.
470.4 Central School building is surrounded by water.
470 Ottawa Regional Hospital loading dock and property are threatened.
468.8 Top of Fox River bank at YMCA.
468.1 Top of Illinois River bank at Central School. River rescue squad threatened.
467 Green St at Shoreline Boat Club flooded.
466.4 Top of Fox River bank at Hudson St river walk.
465.3 Hudson St at Marquette football field is threatened.
463.9 Top of Fox River bank at Ottawa Regional Hospital. Flooding begins at Central School.
462.4 Allen Park entrance threatened and West boat ramp submerged.
460.8 River Rescue emergency boat dock is submerged. Ottawa High School begins flood fighting.
Photos
(1) Gage equipment located on top of levee near mouth of Fox River.
(2) Levee at Ottawa High School.
(3) Looking downstream from atop levee 9/3/2009. Gage height 459.80 ft.
(4) Looking upstream from atop levee 9/3/2009. Gage height 459.80 ft.
About This Location Collapse

Latitude: 41.344444° N, Longitude: 88.839167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 463 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 Not Available Not Available 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
How much forecast precipitation was used for the current river forecast?
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
Chicago Weather Forecast Office
333 W. University Dr.
Romeoville, IL 60446
(815) 834-1435
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Page last modified: 8-Apr-2014 7:35 AM
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