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Hydrograph River at a Glance Download
Illinois River at Marseilles Lock (tailwater) Tailwater (ft)Flow (kcfs)Observed: 460.3 ft at 11:00PM Mar 22, 2023Observed: 460.32 ft at 11:30PM Mar 22, 2023Observed: 460.38 ft at 12:00AM Mar 23, 2023Observed: 460.37 ft at 12:30AM Mar 23, 2023Observed: 460.37 ft at 1:00AM Mar 23, 2023Observed: 460.37 ft at 1:30AM Mar 23, 2023Observed: 460.51 ft at 2:00AM Mar 23, 2023Observed: 460.35 ft at 2:30AM Mar 23, 2023Observed: 460.33 ft at 3:00AM Mar 23, 2023Observed: 460.45 ft at 3:30AM Mar 23, 2023Observed: 460.32 ft at 4:00AM Mar 23, 2023Observed: 460.3 ft at 4:30AM Mar 23, 2023Observed: 460.27 ft at 5:00AM Mar 23, 2023Observed: 460.27 ft at 5:30AM Mar 23, 2023Observed: 460.29 ft at 6:00AM Mar 23, 2023Observed: 460.33 ft at 6:30AM Mar 23, 2023Observed: 460.33 ft at 7:00AM Mar 23, 2023Observed: 460.39 ft at 7:30AM Mar 23, 2023Observed: 460.36 ft at 8:00AM Mar 23, 2023Observed: 460.33 ft at 8:30AM Mar 23, 2023Observed: 460.34 ft at 9:00AM Mar 23, 2023Observed: 460.6 ft at 9:30AM Mar 23, 2023Observed: 460.46 ft at 10:00AM Mar 23, 2023Observed: 460.53 ft at 10:30AM Mar 23, 2023Observed: 460.57 ft at 11:00AM Mar 23, 2023Observed: 460.55 ft at 11:30AM Mar 23, 2023Observed: 460.56 ft at 12:00PM Mar 23, 2023Observed: 460.54 ft at 12:30PM Mar 23, 2023Observed: 460.51 ft at 1:00PM Mar 23, 2023Observed: 460.52 ft at 1:30PM Mar 23, 2023Observed: 460.53 ft at 2:00PM Mar 23, 2023Observed: 460.58 ft at 2:30PM Mar 23, 2023Observed: 460.6 ft at 3:00PM Mar 23, 2023Observed: 460.65 ft at 3:30PM Mar 23, 2023Observed: 460.62 ft at 4:00PM Mar 23, 2023Observed: 460.76 ft at 4:30PM Mar 23, 2023Observed: 460.59 ft at 5:00PM Mar 23, 2023Observed: 460.61 ft at 5:30PM Mar 23, 2023Observed: 460.6 ft at 6:00PM Mar 23, 2023Observed: 460.58 ft at 6:30PM Mar 23, 2023Observed: 460.58 ft at 7:00PM Mar 23, 2023Observed: 460.64 ft at 7:30PM Mar 23, 2023Observed: 460.6 ft at 8:00PM Mar 23, 2023Observed: 460.6 ft at 8:30PM Mar 23, 2023Observed: 460.62 ft at 9:00PM Mar 23, 2023Observed: 460.58 ft at 9:30PM Mar 23, 2023Observed: 460.52 ft at 10:00PM Mar 23, 2023Observed: 460.4 ft at 10:30PM Mar 23, 2023Observed: 460.33 ft at 11:00PM Mar 23, 2023Observed: 460.3 ft at 11:30PM Mar 23, 2023Observed: 460.26 ft at 12:00AM Mar 24, 2023Observed: 460.24 ft at 12:30AM Mar 24, 2023Observed: 460.24 ft at 1:00AM Mar 24, 2023Observed: 460.2 ft at 1:30AM Mar 24, 2023Observed: 460.27 ft at 2:00AM Mar 24, 2023Observed: 460.34 ft at 2:30AM Mar 24, 2023Observed: 460.37 ft at 3:00AM Mar 24, 2023Observed: 460.55 ft at 3:30AM Mar 24, 2023Observed: 460.58 ft at 4:00AM Mar 24, 2023Observed: 460.68 ft at 4:30AM Mar 24, 2023Observed: 460.7 ft at 5:00AM Mar 24, 2023Observed: 460.75 ft at 5:30AM Mar 24, 2023Observed: 460.87 ft at 6:00AM Mar 24, 2023Observed: 460.93 ft at 6:30AM Mar 24, 2023Observed: 461.01 ft at 7:00AM Mar 24, 2023Observed: 461.13 ft at 7:30AM Mar 24, 2023Observed: 461.2 ft at 8:00AM Mar 24, 2023Observed: 461.17 ft at 8:30AM Mar 24, 2023Observed: 461.15 ft at 9:00AM Mar 24, 2023Observed: 461.04 ft at 9:30AM Mar 24, 2023Observed: 461.05 ft at 10:00AM Mar 24, 2023Observed: 461.06 ft at 10:30AM Mar 24, 2023Observed: 460.97 ft at 11:00AM Mar 24, 2023Observed: 461.08 ft at 11:30AM Mar 24, 2023Observed: 460.9 ft at 12:00PM Mar 24, 2023Observed: 460.96 ft at 12:30PM Mar 24, 2023Observed: 460.86 ft at 1:00PM Mar 24, 2023Observed: 460.75 ft at 1:30PM Mar 24, 2023Observed: 460.67 ft at 2:00PM Mar 24, 2023Observed: 460.65 ft at 2:30PM Mar 24, 2023Observed: 460.6 ft at 3:00PM Mar 24, 2023Observed: 460.57 ft at 3:30PM Mar 24, 2023Observed: 460.53 ft at 4:00PM Mar 24, 2023Observed: 460.57 ft at 4:30PM Mar 24, 2023Observed: 460.69 ft at 5:00PM Mar 24, 2023Observed: 460.7 ft at 5:30PM Mar 24, 2023Observed: 460.77 ft at 6:00PM Mar 24, 2023Observed: 460.76 ft at 6:30PM Mar 24, 2023Observed: 460.88 ft at 7:00PM Mar 24, 2023Observed: 460.65 ft at 7:30PM Mar 24, 2023Observed: 460.85 ft at 8:00PM Mar 24, 2023Observed: 460.73 ft at 8:30PM Mar 24, 2023Observed: 460.84 ft at 9:00PM Mar 24, 2023Observed: 460.95 ft at 9:30PM Mar 24, 2023Observed: 460.85 ft at 10:00PM Mar 24, 2023Observed: 460.9 ft at 10:30PM Mar 24, 2023Observed: 460.88 ft at 11:00PM Mar 24, 2023Observed: 460.92 ft at 11:30PM Mar 24, 2023Observed: 460.92 ft at 12:00AM Mar 25, 2023Observed: 460.9 ft at 12:30AM Mar 25, 2023Observed: 460.93 ft at 1:00AM Mar 25, 2023Observed: 460.9 ft at 1:30AM Mar 25, 2023Observed: 461.04 ft at 2:00AM Mar 25, 2023Observed: 461.12 ft at 2:30AM Mar 25, 2023Observed: 461.2 ft at 3:00AM Mar 25, 2023Observed: 461.32 ft at 3:30AM Mar 25, 2023Observed: 461.34 ft at 4:00AM Mar 25, 2023Observed: 461.38 ft at 4:30AM Mar 25, 2023Observed: 461.44 ft at 5:00AM Mar 25, 2023Observed: 461.53 ft at 5:30AM Mar 25, 2023Observed: 461.52 ft at 6:00AM Mar 25, 2023Observed: 461.54 ft at 6:30AM Mar 25, 2023Observed: 461.55 ft at 7:00AM Mar 25, 2023Observed: 461.57 ft at 7:30AM Mar 25, 2023Observed: 461.68 ft at 8:00AM Mar 25, 2023Observed: 461.76 ft at 8:30AM Mar 25, 2023Observed: 462.03 ft at 9:00AM Mar 25, 2023Observed: 461.84 ft at 9:30AM Mar 25, 2023Observed: 461.88 ft at 10:00AM Mar 25, 2023Observed: 461.85 ft at 10:30AM Mar 25, 2023Observed: 461.84 ft at 11:00AM Mar 25, 2023Observed: 461.85 ft at 11:30AM Mar 25, 2023Observed: 461.87 ft at 12:00PM Mar 25, 2023Observed: 461.9 ft at 12:30PM Mar 25, 2023Observed: 462.06 ft at 1:00PM Mar 25, 2023Observed: 462.14 ft at 1:30PM Mar 25, 2023Observed: 462.2 ft at 2:00PM Mar 25, 2023Observed: 462.11 ft at 2:30PM Mar 25, 2023Observed: 462.07 ft at 3:00PM Mar 25, 2023Observed: 462.2 ft at 3:30PM Mar 25, 2023Observed: 462.13 ft at 4:00PM Mar 25, 2023Observed: 462.06 ft at 4:30PM Mar 25, 2023Observed: 461.99 ft at 5:00PM Mar 25, 2023Observed: 462.07 ft at 5:30PM Mar 25, 2023Observed: 461.99 ft at 6:00PM Mar 25, 2023Observed: 462.12 ft at 6:30PM Mar 25, 2023Observed: 462.13 ft at 7:00PM Mar 25, 2023Observed: 462.15 ft at 7:30PM Mar 25, 2023Observed: 462.13 ft at 8:00PM Mar 25, 2023Observed: 462.14 ft at 8:30PM Mar 25, 2023Observed: 462.32 ft at 9:00PM Mar 25, 2023Observed: 462.35 ft at 9:30PM Mar 25, 2023Observed: 462.4 ft at 10:00PM Mar 25, 2023Observed: 462.47 ft at 10:30PM Mar 25, 2023Observed: 462.53 ft at 11:00PM Mar 25, 2023Observed: 462.58 ft at 11:30PM Mar 25, 2023Observed: 462.62 ft at 12:00AM Mar 26, 2023Observed: 462.65 ft at 12:30AM Mar 26, 2023Observed: 462.68 ft at 1:00AM Mar 26, 2023Observed: 462.78 ft at 1:30AM Mar 26, 2023Observed: 462.9 ft at 2:00AM Mar 26, 2023Observed: 462.97 ft at 2:30AM Mar 26, 2023Observed: 463.02 ft at 3:00AM Mar 26, 2023Observed: 463.12 ft at 3:30AM Mar 26, 2023Observed: 463.1 ft at 4:00AM Mar 26, 2023Observed: 463.1 ft at 4:30AM Mar 26, 2023Observed: 463.1 ft at 5:00AM Mar 26, 2023Observed: 463.28 ft at 5:30AM Mar 26, 2023Observed: 463.2 ft at 6:00AM Mar 26, 2023Observed: 463.21 ft at 6:30AM Mar 26, 2023Observed: 463.21 ft at 7:00AM Mar 26, 2023Observed: 463.22 ft at 7:30AM Mar 26, 2023Observed: 463.23 ft at 8:00AM Mar 26, 2023Highest Observation: 463.55 ft at 8:30AM Mar 26, 2023Observed: 463.28 ft at 9:00AM Mar 26, 2023Observed: 463.34 ft at 9:30AM Mar 26, 2023Observed: 463.27 ft at 10:00AM Mar 26, 2023Observed: 463.29 ft at 10:30AM Mar 26, 2023Observed: 463.32 ft at 11:00AM Mar 26, 2023Observed: 463.28 ft at 11:30AM Mar 26, 2023Observed: 463.26 ft at 12:00PM Mar 26, 2023Observed: 463.26 ft at 12:30PM Mar 26, 2023Observed: 463.24 ft at 1:00PM Mar 26, 2023Observed: 463.24 ft at 1:30PM Mar 26, 2023Observed: 463.23 ft at 2:00PM Mar 26, 2023Observed: 463.22 ft at 2:30PM Mar 26, 2023Observed: 463.21 ft at 3:00PM Mar 26, 2023Observed: 463.21 ft at 3:30PM Mar 26, 2023Observed: 463.18 ft at 4:00PM Mar 26, 2023Observed: 463.11 ft at 4:30PM Mar 26, 2023Observed: 463.08 ft at 5:00PM Mar 26, 2023Observed: 463.05 ft at 5:30PM Mar 26, 2023Observed: 463.05 ft at 6:00PM Mar 26, 2023Observed: 463.05 ft at 6:30PM Mar 26, 2023Observed: 463.05 ft at 7:00PM Mar 26, 2023Observed: 463.06 ft at 7:30PM Mar 26, 2023Observed: 463.04 ft at 8:00PM Mar 26, 2023Observed: 463.03 ft at 8:30PM Mar 26, 2023Observed: 463.01 ft at 9:00PM Mar 26, 2023Observed: 463 ft at 9:30PM Mar 26, 2023Observed: 463 ft at 10:00PM Mar 26, 2023Observed: 463 ft at 10:30PM Mar 26, 2023Observed: 462.98 ft at 11:00PM Mar 26, 2023Observed: 462.97 ft at 11:30PM Mar 26, 2023Observed: 462.96 ft at 12:00AM Mar 27, 2023Observed: 462.97 ft at 12:30AM Mar 27, 2023Observed: 462.99 ft at 1:00AM Mar 27, 2023Observed: 463 ft at 1:30AM Mar 27, 2023Observed: 463.02 ft at 2:00AM Mar 27, 2023Observed: 463.1 ft at 2:30AM Mar 27, 2023Observed: 463.04 ft at 3:00AM Mar 27, 2023Observed: 463.04 ft at 3:30AM Mar 27, 2023Observed: 463.06 ft at 4:00AM Mar 27, 2023Observed: 463.04 ft at 4:30AM Mar 27, 2023Observed: 463.02 ft at 5:00AM Mar 27, 2023Observed: 462.96 ft at 5:30AM Mar 27, 2023Observed: 462.95 ft at 6:00AM Mar 27, 2023Observed: 462.94 ft at 6:30AM Mar 27, 2023Observed: 462.97 ft at 7:00AM Mar 27, 2023Observed: 463.02 ft at 7:30AM Mar 27, 2023Observed: 463.03 ft at 8:00AM Mar 27, 2023Observed: 463.04 ft at 8:30AM Mar 27, 2023Observed: 463.04 ft at 9:00AM Mar 27, 2023Observed: 463.26 ft at 9:30AM Mar 27, 2023Observed: 463.06 ft at 10:00AM Mar 27, 2023Observed: 463.05 ft at 10:30AM Mar 27, 2023Observed: 463.05 ft at 11:00AM Mar 27, 2023Observed: 463.22 ft at 11:30AM Mar 27, 2023Observed: 463.07 ft at 12:00PM Mar 27, 2023Observed: 463.06 ft at 12:30PM Mar 27, 2023Observed: 463.09 ft at 1:00PM Mar 27, 2023Observed: 463.06 ft at 1:30PM Mar 27, 2023Observed: 463.06 ft at 2:00PM Mar 27, 2023Observed: 463.05 ft at 2:30PM Mar 27, 2023Observed: 463.02 ft at 3:00PM Mar 27, 2023Observed: 463.03 ft at 3:30PM Mar 27, 2023Observed: 463.01 ft at 4:00PM Mar 27, 2023Observed: 463 ft at 4:30PM Mar 27, 2023Observed: 462.99 ft at 5:00PM Mar 27, 2023Observed: 463.01 ft at 5:30PM Mar 27, 2023Observed: 462.99 ft at 6:00PM Mar 27, 2023Observed: 463.08 ft at 6:30PM Mar 27, 2023Observed: 462.98 ft at 7:00PM Mar 27, 2023Observed: 462.96 ft at 7:30PM Mar 27, 2023Observed: 462.94 ft at 8:00PM Mar 27, 2023Observed: 462.95 ft at 8:30PM Mar 27, 2023Observed: 462.92 ft at 9:00PM Mar 27, 2023Observed: 463.1 ft at 9:30PM Mar 27, 2023Observed: 462.88 ft at 10:00PM Mar 27, 2023Observed: 462.74 ft at 10:30PM Mar 27, 2023Observed: 462.69 ft at 11:00PM Mar 27, 2023Observed: 462.64 ft at 11:30PM Mar 27, 2023Observed: 462.59 ft at 12:00AM Mar 28, 2023Observed: 462.57 ft at 12:30AM Mar 28, 2023Observed: 462.53 ft at 1:00AM Mar 28, 2023Observed: 462.52 ft at 1:30AM Mar 28, 2023Observed: 462.51 ft at 2:00AM Mar 28, 2023Observed: 462.5 ft at 2:30AM Mar 28, 2023Observed: 462.49 ft at 3:00AM Mar 28, 2023Observed: 462.44 ft at 3:30AM Mar 28, 2023Observed: 462.4 ft at 4:00AM Mar 28, 2023Observed: 462.38 ft at 4:30AM Mar 28, 2023Observed: 462.35 ft at 5:00AM Mar 28, 2023Observed: 462.36 ft at 5:30AM Mar 28, 2023Observed: 462.34 ft at 6:00AM Mar 28, 2023Observed: 462.34 ft at 6:30AM Mar 28, 2023Observed: 462.3 ft at 7:00AM Mar 28, 2023Observed: 462.26 ft at 7:30AM Mar 28, 2023Observed: 462.24 ft at 8:00AM Mar 28, 2023Observed: 462.19 ft at 8:30AM Mar 28, 2023Observed: 462.16 ft at 9:00AM Mar 28, 2023Observed: 462.28 ft at 9:30AM Mar 28, 2023Observed: 462.35 ft at 10:00AM Mar 28, 2023Observed: 462.27 ft at 10:30AM Mar 28, 2023Observed: 462.24 ft at 11:00AM Mar 28, 2023Observed: 462.22 ft at 11:30AM Mar 28, 2023Observed: 462.28 ft at 12:00PM Mar 28, 2023Observed: 462.25 ft at 12:30PM Mar 28, 2023Observed: 462.26 ft at 1:00PM Mar 28, 2023Observed: 462.27 ft at 1:30PM Mar 28, 2023Observed: 462.3 ft at 2:00PM Mar 28, 2023Observed: 462.28 ft at 2:30PM Mar 28, 2023Observed: 462.33 ft at 3:00PM Mar 28, 2023Observed: 462.29 ft at 3:30PM Mar 28, 2023Observed: 462.36 ft at 4:00PM Mar 28, 2023Observed: 462.42 ft at 4:30PM Mar 28, 2023Observed: 462.34 ft at 5:00PM Mar 28, 2023Observed: 462.3 ft at 5:30PM Mar 28, 2023Observed: 462.27 ft at 6:00PM Mar 28, 2023Observed: 462.24 ft at 6:30PM Mar 28, 2023Observed: 462.22 ft at 7:00PM Mar 28, 2023Observed: 462.24 ft at 7:30PM Mar 28, 2023Observed: 462.2 ft at 8:00PM Mar 28, 2023Observed: 462.22 ft at 8:30PM Mar 28, 2023Observed: 462.26 ft at 9:00PM Mar 28, 2023Observed: 462.27 ft at 9:30PM Mar 28, 2023Observed: 462.28 ft at 10:00PM Mar 28, 2023Observed: 462.5 ft at 10:30PM Mar 28, 2023Observed: 462.2 ft at 11:00PM Mar 28, 2023Observed: 462.21 ft at 11:30PM Mar 28, 2023Observed: 462.3 ft at 12:00AM Mar 29, 2023Observed: 462.26 ft at 12:30AM Mar 29, 2023Observed: 462.22 ft at 1:00AM Mar 29, 2023Observed: 462.17 ft at 1:30AM Mar 29, 2023Observed: 462.13 ft at 2:00AM Mar 29, 2023Observed: 462.11 ft at 2:30AM Mar 29, 2023Observed: 462.11 ft at 3:00AM Mar 29, 2023Observed: 462.1 ft at 3:30AM Mar 29, 2023Observed: 462.11 ft at 4:00AM Mar 29, 2023Observed: 462.12 ft at 4:30AM Mar 29, 2023Observed: 462.12 ft at 5:00AM Mar 29, 2023Observed: 462.02 ft at 5:30AM Mar 29, 2023Observed: 461.93 ft at 6:00AM Mar 29, 2023Observed: 461.87 ft at 6:30AM Mar 29, 2023Observed: 461.83 ft at 7:00AM Mar 29, 2023Observed: 461.8 ft at 7:30AM Mar 29, 2023Observed: 461.72 ft at 9:00AM Mar 29, 2023Observed: 461.64 ft at 9:30AM Mar 29, 2023Observed: 461.45 ft at 12:00PM Mar 29, 2023Observed: 461.4 ft at 12:30PM Mar 29, 2023Observed: 461.31 ft at 1:00PM Mar 29, 2023Observed: 461.27 ft at 1:30PM Mar 29, 2023Observed: 461.22 ft at 2:00PM Mar 29, 2023Observed: 461.2 ft at 2:30PM Mar 29, 2023Observed: 461.18 ft at 3:00PM Mar 29, 2023Observed: 461.33 ft at 3:30PM Mar 29, 2023Observed: 461.18 ft at 4:00PM Mar 29, 2023Observed: 461.32 ft at 4:30PM Mar 29, 2023Observed: 461.2 ft at 5:00PM Mar 29, 2023Observed: 461.16 ft at 5:30PM Mar 29, 2023Observed: 461.18 ft at 6:00PM Mar 29, 2023Observed: 461.18 ft at 6:30PM Mar 29, 2023Observed: 461.29 ft at 7:00PM Mar 29, 2023Observed: 461.35 ft at 7:30PM Mar 29, 2023Observed: 461.44 ft at 8:00PM Mar 29, 2023Observed: 461.48 ft at 8:30PM Mar 29, 2023Observed: 461.43 ft at 9:00PM Mar 29, 2023Observed: 461.5 ft at 9:30PM Mar 29, 2023Observed: 461.47 ft at 10:00PM Mar 29, 2023Observed: 461.46 ft at 10:30PM Mar 29, 2023Highest Forecast: 461 ft 1:00AM Mar 30, 2023Forecast: 460.9 ft 7:00AM Mar 30, 2023Forecast: 460.9 ft 1:00PM Mar 30, 2023Forecast: 460.8 ft 7:00PM Mar 30, 2023Forecast: 460.7 ft 1:00AM Mar 31, 2023Forecast: 460.6 ft 7:00AM Mar 31, 2023Forecast: 460.6 ft 1:00PM Mar 31, 2023Forecast: 460.5 ft 7:00PM Mar 31, 2023Forecast: 460.4 ft 1:00AM Apr 01, 2023Forecast: 460.4 ft 7:00AM Apr 01, 2023Forecast: 460.3 ft 1:00PM Apr 01, 2023Forecast: 460.2 ft 7:00PM Apr 01, 2023Forecast: 460.1 ft 1:00AM Apr 02, 2023Forecast: 460 ft 7:00AM Apr 02, 2023Forecast: 460 ft 1:00PM Apr 02, 2023Forecast: 460 ft 7:00PM Apr 02, 2023Forecast: 459.9 ft 1:00AM Apr 03, 2023Forecast: 459.9 ft 7:00AM Apr 03, 2023Forecast: 459.8 ft 1:00PM Apr 03, 2023Forecast: 459.8 ft 7:00PM Apr 03, 2023Forecast: 459.7 ft 1:00AM Apr 04, 2023Forecast: 459.7 ft 7:00AM Apr 04, 2023Forecast: 459.6 ft 1:00PM Apr 04, 2023Forecast: 459.6 ft 7:00PM Apr 04, 2023Forecast: 459.6 ft 1:00AM Apr 05, 2023Forecast: 459.6 ft 7:00AM Apr 05, 2023USGS--Water Resources of the United StatesMMOI2(plotting HTIRG) Graph Created (10:55PM Mar 29, 2023)ObservedForecast (issued 9:16AM Mar 29)Latest observed value: 461.46 ft at 10:30 PM CDT 29-Mar-2023. Flood Stage is 467 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
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: Forecasts for the Illinois River at Marseilles Lock (tailwater) are issued routinely year-round.

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Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 467
Action Stage: 466.5
Low Stage (in feet): 456.5

Historic Crests
(1) 476.72 ft on 04/19/2013
(2) 475.89 ft on 09/16/2008
(3) 475.84 ft on 05/19/2020
(4) 474.83 ft on 02/22/1997
(5) 474.70 ft on 04/09/1983
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 475.84 ft on 05/19/2020
(2) 474.18 ft on 05/02/2019
(3) 474.26 ft on 02/22/2018
(4) 469.00 ft on 05/02/2017
(5) 471.12 ft on 12/30/2015
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:15
KML Image
Gauge LocationGauge Map Marker
 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
483.5 High water levels cause Marseilles Lock to shut down.
466.7 High water levels begin to impact shipping interests along the river.
Low Water Impacts Collapse
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456.5 Low water levels begin to impact shipping interests along the river.
About This Location Collapse

Latitude: 41.328408° N, Longitude: 88.755137° W, Horizontal Datum: Unknown

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 467 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 467 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?
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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
Chicago Weather Forecast Office
333 W. University Dr.
Romeoville, IL 60446
(815) 834-1435
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