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Hydrograph River at a Glance Download
Illinois River at Marseilles lock/dam Tailwater (ft)Flow (kcfs)Observed: 459.62 ft at 1:00AM Mar 29, 2015Observed: 459.62 ft at 1:30AM Mar 29, 2015Observed: 459.56 ft at 2:00AM Mar 29, 2015Observed: 459.57 ft at 2:30AM Mar 29, 2015Observed: 459.8 ft at 3:00AM Mar 29, 2015Observed: 459.61 ft at 3:30AM Mar 29, 2015Observed: 459.61 ft at 4:00AM Mar 29, 2015Observed: 459.61 ft at 4:30AM Mar 29, 2015Observed: 459.61 ft at 5:00AM Mar 29, 2015Observed: 459.68 ft at 5:30AM Mar 29, 2015Observed: 459.73 ft at 6:00AM Mar 29, 2015Observed: 459.76 ft at 6:30AM Mar 29, 2015Observed: 459.78 ft at 7:00AM Mar 29, 2015Observed: 459.8 ft at 7:30AM Mar 29, 2015Observed: 459.81 ft at 8:00AM Mar 29, 2015Observed: 459.87 ft at 8:30AM Mar 29, 2015Observed: 459.84 ft at 9:00AM Mar 29, 2015Observed: 459.87 ft at 9:30AM Mar 29, 2015Observed: 459.87 ft at 10:00AM Mar 29, 2015Observed: 459.92 ft at 10:30AM Mar 29, 2015Observed: 459.91 ft at 11:00AM Mar 29, 2015Observed: 459.89 ft at 11:30AM Mar 29, 2015Observed: 459.88 ft at 12:00PM Mar 29, 2015Observed: 459.93 ft at 12:30PM Mar 29, 2015Observed: 459.85 ft at 1:00PM Mar 29, 2015Observed: 459.82 ft at 1:30PM Mar 29, 2015Observed: 459.79 ft at 2:00PM Mar 29, 2015Observed: 459.79 ft at 2:30PM Mar 29, 2015Observed: 459.84 ft at 3:00PM Mar 29, 2015Observed: 459.91 ft at 3:30PM Mar 29, 2015Observed: 459.96 ft at 4:00PM Mar 29, 2015Observed: 459.93 ft at 4:30PM Mar 29, 2015Observed: 460.22 ft at 5:00PM Mar 29, 2015Observed: 460 ft at 5:30PM Mar 29, 2015Observed: 459.96 ft at 6:00PM Mar 29, 2015Observed: 459.94 ft at 6:30PM Mar 29, 2015Observed: 459.99 ft at 7:00PM Mar 29, 2015Observed: 460.04 ft at 7:30PM Mar 29, 2015Observed: 460.08 ft at 8:00PM Mar 29, 2015Observed: 460.08 ft at 8:30PM Mar 29, 2015Highest Observation: 460.38 ft at 9:00PM Mar 29, 2015Observed: 459.95 ft at 9:30PM Mar 29, 2015Observed: 459.97 ft at 10:00PM Mar 29, 2015Observed: 459.98 ft at 10:30PM Mar 29, 2015Observed: 459.98 ft at 11:00PM Mar 29, 2015Observed: 459.98 ft at 11:30PM Mar 29, 2015Observed: 459.93 ft at 12:00AM Mar 30, 2015Observed: 459.97 ft at 12:30AM Mar 30, 2015Observed: 459.9 ft at 1:00AM Mar 30, 2015Observed: 459.84 ft at 1:30AM Mar 30, 2015Observed: 459.86 ft at 2:00AM Mar 30, 2015Observed: 459.82 ft at 2:30AM Mar 30, 2015Observed: 459.82 ft at 3:00AM Mar 30, 2015Observed: 459.81 ft at 3:30AM Mar 30, 2015Observed: 459.78 ft at 4:00AM Mar 30, 2015Observed: 459.77 ft at 4:30AM Mar 30, 2015Observed: 459.8 ft at 5:00AM Mar 30, 2015Observed: 459.8 ft at 5:30AM Mar 30, 2015Observed: 459.81 ft at 6:00AM Mar 30, 2015Observed: 459.82 ft at 6:30AM Mar 30, 2015Observed: 459.83 ft at 7:00AM Mar 30, 2015Observed: 459.91 ft at 7:30AM Mar 30, 2015Observed: 459.92 ft at 8:00AM Mar 30, 2015Observed: 459.97 ft at 8:30AM Mar 30, 2015Observed: 459.94 ft at 9:00AM Mar 30, 2015Observed: 459.92 ft at 9:30AM Mar 30, 2015Observed: 459.92 ft at 11:00AM Mar 30, 2015Observed: 459.91 ft at 11:30AM Mar 30, 2015Observed: 460 ft at 12:00PM Mar 30, 2015Observed: 460.05 ft at 12:30PM Mar 30, 2015Observed: 460.08 ft at 1:00PM Mar 30, 2015Observed: 460.01 ft at 1:30PM Mar 30, 2015Observed: 459.97 ft at 2:00PM Mar 30, 2015Observed: 460.02 ft at 2:30PM Mar 30, 2015Observed: 459.93 ft at 3:00PM Mar 30, 2015Observed: 459.89 ft at 3:30PM Mar 30, 2015Observed: 459.91 ft at 4:00PM Mar 30, 2015Observed: 459.84 ft at 4:30PM Mar 30, 2015Observed: 459.82 ft at 5:00PM Mar 30, 2015Observed: 459.81 ft at 5:30PM Mar 30, 2015Observed: 459.81 ft at 6:00PM Mar 30, 2015Observed: 459.81 ft at 6:30PM Mar 30, 2015Observed: 459.86 ft at 7:00PM Mar 30, 2015Observed: 459.86 ft at 7:30PM Mar 30, 2015Observed: 459.91 ft at 8:00PM Mar 30, 2015Observed: 459.9 ft at 8:30PM Mar 30, 2015Observed: 459.88 ft at 9:00PM Mar 30, 2015Observed: 459.89 ft at 9:30PM Mar 30, 2015Observed: 459.94 ft at 10:00PM Mar 30, 2015Observed: 459.96 ft at 10:30PM Mar 30, 2015Observed: 460.06 ft at 11:00PM Mar 30, 2015Observed: 460.05 ft at 11:30PM Mar 30, 2015Observed: 459.96 ft at 12:00AM Mar 31, 2015Observed: 459.97 ft at 12:30AM Mar 31, 2015Observed: 460.2 ft at 1:00AM Mar 31, 2015Observed: 460 ft at 1:30AM Mar 31, 2015Observed: 459.99 ft at 2:00AM Mar 31, 2015Observed: 459.96 ft at 2:30AM Mar 31, 2015Observed: 459.96 ft at 3:00AM Mar 31, 2015Observed: 459.97 ft at 3:30AM Mar 31, 2015Observed: 459.96 ft at 4:00AM Mar 31, 2015Observed: 459.97 ft at 4:30AM Mar 31, 2015Observed: 459.9 ft at 5:00AM Mar 31, 2015Observed: 459.66 ft at 5:30AM Mar 31, 2015Observed: 459.78 ft at 6:00AM Mar 31, 2015Observed: 460.04 ft at 6:30AM Mar 31, 2015Observed: 459.74 ft at 7:00AM Mar 31, 2015Observed: 459.7 ft at 7:30AM Mar 31, 2015Observed: 459.98 ft at 8:00AM Mar 31, 2015Observed: 459.69 ft at 8:30AM Mar 31, 2015Observed: 459.68 ft at 9:00AM Mar 31, 2015Observed: 459.76 ft at 9:30AM Mar 31, 2015Observed: 459.63 ft at 10:00AM Mar 31, 2015Observed: 459.65 ft at 10:30AM Mar 31, 2015Observed: 459.64 ft at 11:00AM Mar 31, 2015Observed: 459.79 ft at 11:30AM Mar 31, 2015Observed: 459.67 ft at 12:00PM Mar 31, 2015Observed: 459.67 ft at 12:30PM Mar 31, 2015Observed: 459.6 ft at 1:00PM Mar 31, 2015Observed: 459.61 ft at 1:30PM Mar 31, 2015Observed: 459.66 ft at 2:00PM Mar 31, 2015Observed: 459.72 ft at 2:30PM Mar 31, 2015Observed: 459.79 ft at 3:00PM Mar 31, 2015Observed: 459.66 ft at 3:30PM Mar 31, 2015Observed: 459.59 ft at 4:00PM Mar 31, 2015Observed: 459.63 ft at 4:30PM Mar 31, 2015Observed: 459.63 ft at 5:00PM Mar 31, 2015Observed: 459.61 ft at 5:30PM Mar 31, 2015Observed: 459.61 ft at 6:00PM Mar 31, 2015Observed: 459.6 ft at 6:30PM Mar 31, 2015Observed: 459.6 ft at 7:00PM Mar 31, 2015Observed: 459.59 ft at 7:30PM Mar 31, 2015Observed: 459.55 ft at 8:00PM Mar 31, 2015Observed: 459.51 ft at 8:30PM Mar 31, 2015Observed: 459.5 ft at 9:00PM Mar 31, 2015Observed: 459.49 ft at 9:30PM Mar 31, 2015Observed: 459.43 ft at 10:00PM Mar 31, 2015Observed: 459.41 ft at 10:30PM Mar 31, 2015Observed: 459.41 ft at 11:00PM Mar 31, 2015Observed: 459.45 ft at 11:30PM Mar 31, 2015Highest Forecast: 459.9 ft 1:00AM Apr 01, 2015Forecast: 459.8 ft 7:00AM Apr 01, 2015Forecast: 459.8 ft 1:00PM Apr 01, 2015Forecast: 459.8 ft 7:00PM Apr 01, 2015Forecast: 459.7 ft 1:00AM Apr 02, 2015Forecast: 459.7 ft 7:00AM Apr 02, 2015Forecast: 459.7 ft 1:00PM Apr 02, 2015Forecast: 459.6 ft 7:00PM Apr 02, 2015Forecast: 459.6 ft 1:00AM Apr 03, 2015Forecast: 459.6 ft 7:00AM Apr 03, 2015Forecast: 459.6 ft 1:00PM Apr 03, 2015Forecast: 459.5 ft 7:00PM Apr 03, 2015Forecast: 459.5 ft 1:00AM Apr 04, 2015Forecast: 459.5 ft 7:00AM Apr 04, 2015Forecast: 459.5 ft 1:00PM Apr 04, 2015Forecast: 459.5 ft 7:00PM Apr 04, 2015Forecast: 459.5 ft 1:00AM Apr 05, 2015Forecast: 459.5 ft 7:00AM Apr 05, 2015Forecast: 459.4 ft 1:00PM Apr 05, 2015Forecast: 459.4 ft 7:00PM Apr 05, 2015Forecast: 459.4 ft 1:00AM Apr 06, 2015Forecast: 459.4 ft 7:00AM Apr 06, 2015Forecast: 459.4 ft 1:00PM Apr 06, 2015Forecast: 459.4 ft 7:00PM Apr 06, 2015Forecast: 459.4 ft 1:00AM Apr 07, 2015Forecast: 459.4 ft 7:00AM Apr 07, 2015MMOI2(plotting HTIRG) Graph Created (12:35AM Apr 1, 2015)ObservedForecast (issued 10:19AM Mar 31)Latest observed value: 459.45 ft at 11:30 PM CDT 31-Mar-2015.
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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 Marseilles lock/dam are issued routinely year-round.

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Flood Categories (in feet)
Not Available

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

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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.
About This Location Collapse

Latitude: 41.325000° N, Longitude: 88.706944° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available 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 0 ft 485.6 ft  

Current/Historical Observations:

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How much forecast precipitation was used for the current river forecast?
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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.
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Page last modified: 12-Feb-2015 9:35 PM
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