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Hydrograph River at a Glance Download
Illinois River at Marseilles Lock & Dam (tailwater) Tailwater (ft)Flow (kcfs)Observed: 460.07 ft at 6:30PM Oct 14, 2021Observed: 460.04 ft at 7:00PM Oct 14, 2021Observed: 460.02 ft at 7:30PM Oct 14, 2021Observed: 459.99 ft at 8:00PM Oct 14, 2021Observed: 459.98 ft at 8:30PM Oct 14, 2021Observed: 459.95 ft at 9:00PM Oct 14, 2021Observed: 460.1 ft at 9:30PM Oct 14, 2021Observed: 460.06 ft at 10:00PM Oct 14, 2021Observed: 460 ft at 10:30PM Oct 14, 2021Observed: 459.95 ft at 11:00PM Oct 14, 2021Observed: 459.9 ft at 11:30PM Oct 14, 2021Observed: 459.87 ft at 12:00AM Oct 15, 2021Observed: 459.85 ft at 12:30AM Oct 15, 2021Observed: 459.82 ft at 1:00AM Oct 15, 2021Observed: 459.8 ft at 1:30AM Oct 15, 2021Observed: 459.78 ft at 2:00AM Oct 15, 2021Observed: 459.78 ft at 2:30AM Oct 15, 2021Observed: 459.78 ft at 3:00AM Oct 15, 2021Observed: 459.78 ft at 3:30AM Oct 15, 2021Observed: 459.78 ft at 4:00AM Oct 15, 2021Observed: 459.78 ft at 4:30AM Oct 15, 2021Observed: 459.79 ft at 5:00AM Oct 15, 2021Observed: 459.8 ft at 5:30AM Oct 15, 2021Observed: 459.8 ft at 6:00AM Oct 15, 2021Observed: 459.8 ft at 6:30AM Oct 15, 2021Observed: 459.8 ft at 7:00AM Oct 15, 2021Observed: 460.06 ft at 7:30AM Oct 15, 2021Observed: 460.01 ft at 8:00AM Oct 15, 2021Observed: 460.12 ft at 8:30AM Oct 15, 2021Observed: 460.08 ft at 9:00AM Oct 15, 2021Observed: 460.04 ft at 9:30AM Oct 15, 2021Observed: 460.03 ft at 10:00AM Oct 15, 2021Observed: 460.03 ft at 10:30AM Oct 15, 2021Observed: 460.03 ft at 11:00AM Oct 15, 2021Observed: 460.05 ft at 11:30AM Oct 15, 2021Observed: 460.07 ft at 12:00PM Oct 15, 2021Observed: 460.31 ft at 12:30PM Oct 15, 2021Observed: 460.26 ft at 1:00PM Oct 15, 2021Observed: 460.23 ft at 1:30PM Oct 15, 2021Highest Observation: 460.41 ft at 2:00PM Oct 15, 2021Observed: 460.36 ft at 2:30PM Oct 15, 2021Observed: 460.32 ft at 3:00PM Oct 15, 2021Observed: 460.28 ft at 3:30PM Oct 15, 2021Observed: 460.25 ft at 4:00PM Oct 15, 2021Observed: 460.22 ft at 4:30PM Oct 15, 2021Observed: 460.2 ft at 5:00PM Oct 15, 2021Observed: 460.31 ft at 5:30PM Oct 15, 2021Observed: 460.16 ft at 6:00PM Oct 15, 2021Observed: 460.33 ft at 6:30PM Oct 15, 2021Observed: 460.28 ft at 7:00PM Oct 15, 2021Observed: 460.24 ft at 7:30PM Oct 15, 2021Observed: 460.22 ft at 8:00PM Oct 15, 2021Observed: 460.2 ft at 8:30PM Oct 15, 2021Observed: 460.17 ft at 9:00PM Oct 15, 2021Observed: 460.19 ft at 9:30PM Oct 15, 2021Observed: 460.06 ft at 10:00PM Oct 15, 2021Observed: 460.13 ft at 10:30PM Oct 15, 2021Observed: 460.1 ft at 11:00PM Oct 15, 2021Observed: 460.03 ft at 11:30PM Oct 15, 2021Observed: 460.08 ft at 12:00AM Oct 16, 2021Observed: 460.01 ft at 12:30AM Oct 16, 2021Observed: 460.02 ft at 1:00AM Oct 16, 2021Observed: 460.2 ft at 1:30AM Oct 16, 2021Observed: 460.11 ft at 2:00AM Oct 16, 2021Observed: 460.14 ft at 2:30AM Oct 16, 2021Observed: 460.34 ft at 3:00AM Oct 16, 2021Observed: 460.33 ft at 3:30AM Oct 16, 2021Observed: 460.24 ft at 4:00AM Oct 16, 2021Observed: 460.18 ft at 4:30AM Oct 16, 2021Observed: 460.13 ft at 5:00AM Oct 16, 2021Observed: 460.28 ft at 5:30AM Oct 16, 2021Observed: 460.07 ft at 6:00AM Oct 16, 2021Observed: 460.01 ft at 6:30AM Oct 16, 2021Observed: 460.17 ft at 7:00AM Oct 16, 2021Observed: 460.1 ft at 7:30AM Oct 16, 2021Observed: 459.84 ft at 8:00AM Oct 16, 2021Observed: 459.8 ft at 8:30AM Oct 16, 2021Observed: 459.82 ft at 9:00AM Oct 16, 2021Observed: 459.78 ft at 9:30AM Oct 16, 2021Observed: 459.84 ft at 10:00AM Oct 16, 2021Observed: 459.73 ft at 10:30AM Oct 16, 2021Observed: 459.67 ft at 11:00AM Oct 16, 2021Observed: 459.66 ft at 11:30AM Oct 16, 2021Observed: 459.89 ft at 12:00PM Oct 16, 2021Observed: 459.66 ft at 12:30PM Oct 16, 2021Observed: 459.66 ft at 1:00PM Oct 16, 2021Observed: 459.88 ft at 1:30PM Oct 16, 2021Observed: 459.72 ft at 2:00PM Oct 16, 2021Observed: 459.83 ft at 2:30PM Oct 16, 2021Observed: 459.86 ft at 3:00PM Oct 16, 2021Observed: 460.12 ft at 3:30PM Oct 16, 2021Observed: 459.98 ft at 4:00PM Oct 16, 2021Observed: 459.99 ft at 4:30PM Oct 16, 2021Observed: 460.06 ft at 5:00PM Oct 16, 2021Observed: 460.01 ft at 5:30PM Oct 16, 2021Observed: 460.14 ft at 6:00PM Oct 16, 2021Observed: 459.9 ft at 6:30PM Oct 16, 2021Observed: 460.07 ft at 7:00PM Oct 16, 2021Observed: 459.83 ft at 7:30PM Oct 16, 2021Observed: 460.12 ft at 8:00PM Oct 16, 2021Observed: 460 ft at 8:30PM Oct 16, 2021Observed: 460.03 ft at 9:00PM Oct 16, 2021Observed: 459.94 ft at 9:30PM Oct 16, 2021Observed: 459.94 ft at 10:00PM Oct 16, 2021Observed: 460.16 ft at 10:30PM Oct 16, 2021Observed: 459.95 ft at 11:00PM Oct 16, 2021Observed: 459.95 ft at 11:30PM Oct 16, 2021Observed: 459.95 ft at 12:00AM Oct 17, 2021Observed: 459.95 ft at 12:30AM Oct 17, 2021Observed: 459.89 ft at 1:00AM Oct 17, 2021Observed: 459.85 ft at 1:30AM Oct 17, 2021Observed: 459.82 ft at 2:00AM Oct 17, 2021Observed: 459.78 ft at 2:30AM Oct 17, 2021Observed: 459.75 ft at 3:00AM Oct 17, 2021Observed: 459.71 ft at 3:30AM Oct 17, 2021Observed: 459.67 ft at 4:00AM Oct 17, 2021Observed: 459.63 ft at 4:30AM Oct 17, 2021Observed: 459.6 ft at 5:00AM Oct 17, 2021Observed: 459.57 ft at 5:30AM Oct 17, 2021Observed: 459.54 ft at 6:00AM Oct 17, 2021Observed: 459.48 ft at 6:30AM Oct 17, 2021Observed: 459.44 ft at 7:00AM Oct 17, 2021Observed: 459.44 ft at 7:30AM Oct 17, 2021Observed: 459.46 ft at 8:00AM Oct 17, 2021Observed: 459.51 ft at 8:30AM Oct 17, 2021Observed: 459.55 ft at 9:00AM Oct 17, 2021Observed: 459.58 ft at 9:30AM Oct 17, 2021Observed: 459.6 ft at 10:00AM Oct 17, 2021Observed: 459.62 ft at 10:30AM Oct 17, 2021Observed: 459.65 ft at 11:00AM Oct 17, 2021Observed: 459.66 ft at 11:30AM Oct 17, 2021Observed: 459.68 ft at 12:00PM Oct 17, 2021Observed: 459.71 ft at 12:30PM Oct 17, 2021Observed: 459.75 ft at 1:00PM Oct 17, 2021Observed: 459.78 ft at 1:30PM Oct 17, 2021Observed: 459.82 ft at 2:00PM Oct 17, 2021Observed: 459.83 ft at 2:30PM Oct 17, 2021Observed: 459.98 ft at 3:00PM Oct 17, 2021Observed: 459.94 ft at 3:30PM Oct 17, 2021Observed: 459.95 ft at 4:00PM Oct 17, 2021Observed: 459.95 ft at 4:30PM Oct 17, 2021Observed: 459.95 ft at 5:00PM Oct 17, 2021Observed: 459.83 ft at 5:30PM Oct 17, 2021Observed: 459.78 ft at 6:00PM Oct 17, 2021Observed: 459.74 ft at 6:30PM Oct 17, 2021Observed: 459.76 ft at 7:00PM Oct 17, 2021Observed: 459.73 ft at 7:30PM Oct 17, 2021Observed: 459.64 ft at 8:00PM Oct 17, 2021Observed: 459.62 ft at 8:30PM Oct 17, 2021Observed: 459.64 ft at 9:00PM Oct 17, 2021Observed: 459.6 ft at 9:30PM Oct 17, 2021Observed: 459.67 ft at 10:00PM Oct 17, 2021Observed: 459.52 ft at 10:30PM Oct 17, 2021Observed: 459.5 ft at 11:00PM Oct 17, 2021Observed: 459.44 ft at 11:30PM Oct 17, 2021Observed: 459.56 ft at 12:00AM Oct 18, 2021Observed: 459.49 ft at 12:30AM Oct 18, 2021Observed: 459.43 ft at 1:00AM Oct 18, 2021Observed: 459.44 ft at 1:30AM Oct 18, 2021Observed: 459.48 ft at 2:00AM Oct 18, 2021Observed: 459.62 ft at 2:30AM Oct 18, 2021Observed: 459.45 ft at 3:00AM Oct 18, 2021Observed: 459.42 ft at 3:30AM Oct 18, 2021Observed: 459.6 ft at 4:00AM Oct 18, 2021Observed: 459.41 ft at 4:30AM Oct 18, 2021Observed: 459.38 ft at 5:00AM Oct 18, 2021Observed: 459.38 ft at 5:30AM Oct 18, 2021Observed: 459.36 ft at 6:00AM Oct 18, 2021Observed: 459.38 ft at 6:30AM Oct 18, 2021Observed: 459.36 ft at 7:00AM Oct 18, 2021Observed: 459.36 ft at 7:30AM Oct 18, 2021Observed: 459.33 ft at 8:00AM Oct 18, 2021Observed: 459.32 ft at 8:30AM Oct 18, 2021Observed: 459.34 ft at 9:00AM Oct 18, 2021Observed: 459.28 ft at 9:30AM Oct 18, 2021Observed: 459.32 ft at 10:00AM Oct 18, 2021Observed: 459.32 ft at 10:30AM Oct 18, 2021Observed: 459.3 ft at 11:00AM Oct 18, 2021Observed: 459.57 ft at 11:30AM Oct 18, 2021Observed: 459.39 ft at 12:00PM Oct 18, 2021Observed: 459.28 ft at 12:30PM Oct 18, 2021Observed: 459.27 ft at 1:00PM Oct 18, 2021Observed: 459.3 ft at 1:30PM Oct 18, 2021Observed: 459.36 ft at 2:00PM Oct 18, 2021Observed: 459.28 ft at 2:30PM Oct 18, 2021Observed: 459.35 ft at 3:00PM Oct 18, 2021Observed: 459.53 ft at 3:30PM Oct 18, 2021Observed: 459.38 ft at 4:00PM Oct 18, 2021Observed: 459.45 ft at 4:30PM Oct 18, 2021Observed: 459.48 ft at 5:00PM Oct 18, 2021Observed: 459.49 ft at 5:30PM Oct 18, 2021Observed: 459.53 ft at 6:00PM Oct 18, 2021Observed: 459.5 ft at 6:30PM Oct 18, 2021Observed: 459.48 ft at 7:00PM Oct 18, 2021Observed: 459.48 ft at 7:30PM Oct 18, 2021Observed: 459.51 ft at 8:00PM Oct 18, 2021Observed: 459.5 ft at 8:30PM Oct 18, 2021Observed: 459.8 ft at 9:00PM Oct 18, 2021Observed: 459.5 ft at 9:30PM Oct 18, 2021Observed: 459.43 ft at 10:00PM Oct 18, 2021Observed: 459.5 ft at 10:30PM Oct 18, 2021Observed: 459.51 ft at 11:00PM Oct 18, 2021Observed: 459.49 ft at 11:30PM Oct 18, 2021Observed: 459.43 ft at 12:00AM Oct 19, 2021Observed: 459.48 ft at 12:30AM Oct 19, 2021Observed: 459.5 ft at 1:00AM Oct 19, 2021Observed: 459.51 ft at 1:30AM Oct 19, 2021Observed: 459.58 ft at 2:00AM Oct 19, 2021Observed: 459.54 ft at 2:30AM Oct 19, 2021Observed: 459.53 ft at 3:00AM Oct 19, 2021Observed: 459.49 ft at 3:30AM Oct 19, 2021Observed: 459.5 ft at 4:00AM Oct 19, 2021Observed: 459.59 ft at 4:30AM Oct 19, 2021Observed: 459.6 ft at 5:00AM Oct 19, 2021Observed: 459.52 ft at 5:30AM Oct 19, 2021Observed: 459.53 ft at 6:00AM Oct 19, 2021Observed: 459.55 ft at 6:30AM Oct 19, 2021Observed: 459.42 ft at 7:00AM Oct 19, 2021Observed: 459.67 ft at 7:30AM Oct 19, 2021Observed: 459.53 ft at 8:00AM Oct 19, 2021Observed: 459.52 ft at 8:30AM Oct 19, 2021Observed: 459.69 ft at 9:00AM Oct 19, 2021Observed: 459.56 ft at 9:30AM Oct 19, 2021Observed: 459.53 ft at 10:00AM Oct 19, 2021Observed: 459.55 ft at 10:30AM Oct 19, 2021Observed: 459.55 ft at 11:00AM Oct 19, 2021Observed: 459.52 ft at 11:30AM Oct 19, 2021Observed: 459.53 ft at 12:00PM Oct 19, 2021Observed: 459.63 ft at 12:30PM Oct 19, 2021Observed: 459.58 ft at 1:00PM Oct 19, 2021Observed: 459.6 ft at 1:30PM Oct 19, 2021Observed: 459.78 ft at 2:00PM Oct 19, 2021Observed: 459.54 ft at 2:30PM Oct 19, 2021Observed: 459.66 ft at 3:00PM Oct 19, 2021Observed: 459.44 ft at 3:30PM Oct 19, 2021Observed: 459.45 ft at 4:00PM Oct 19, 2021Observed: 459.43 ft at 4:30PM Oct 19, 2021Observed: 459.4 ft at 5:00PM Oct 19, 2021Observed: 459.37 ft at 5:30PM Oct 19, 2021Observed: 459.36 ft at 6:00PM Oct 19, 2021Observed: 459.2 ft at 6:30PM Oct 19, 2021Observed: 459.14 ft at 7:00PM Oct 19, 2021Observed: 459.05 ft at 7:30PM Oct 19, 2021Observed: 459.05 ft at 8:00PM Oct 19, 2021Observed: 459.35 ft at 8:30PM Oct 19, 2021Observed: 459.16 ft at 9:30PM Oct 19, 2021Observed: 459.43 ft at 10:00PM Oct 19, 2021Observed: 459.3 ft at 10:30PM Oct 19, 2021Observed: 459.28 ft at 11:00PM Oct 19, 2021Observed: 459.23 ft at 11:30PM Oct 19, 2021Observed: 459.38 ft at 12:00AM Oct 20, 2021Observed: 459.25 ft at 12:30AM Oct 20, 2021Observed: 459.2 ft at 1:00AM Oct 20, 2021Observed: 459.26 ft at 1:30AM Oct 20, 2021Observed: 459.16 ft at 2:00AM Oct 20, 2021Observed: 459.13 ft at 2:30AM Oct 20, 2021Observed: 459.12 ft at 3:00AM Oct 20, 2021Observed: 459.13 ft at 3:30AM Oct 20, 2021Observed: 459.1 ft at 4:00AM Oct 20, 2021Observed: 459.05 ft at 4:30AM Oct 20, 2021Observed: 459.08 ft at 5:00AM Oct 20, 2021Observed: 459.02 ft at 5:30AM Oct 20, 2021Observed: 459 ft at 6:00AM Oct 20, 2021Observed: 459.14 ft at 6:30AM Oct 20, 2021Observed: 459 ft at 7:00AM Oct 20, 2021Observed: 458.99 ft at 7:30AM Oct 20, 2021Observed: 459 ft at 8:00AM Oct 20, 2021Observed: 458.98 ft at 8:30AM Oct 20, 2021Observed: 459.26 ft at 9:00AM Oct 20, 2021Observed: 459.3 ft at 9:30AM Oct 20, 2021Observed: 459.38 ft at 10:00AM Oct 20, 2021Observed: 459.36 ft at 10:30AM Oct 20, 2021Observed: 459.41 ft at 11:00AM Oct 20, 2021Observed: 459.35 ft at 11:30AM Oct 20, 2021Observed: 459.39 ft at 12:00PM Oct 20, 2021Observed: 459.4 ft at 12:30PM Oct 20, 2021Observed: 459.41 ft at 1:00PM Oct 20, 2021Observed: 459.66 ft at 1:30PM Oct 20, 2021Observed: 459.43 ft at 2:00PM Oct 20, 2021Observed: 459.38 ft at 2:30PM Oct 20, 2021Observed: 459.38 ft at 3:00PM Oct 20, 2021Observed: 459.46 ft at 3:30PM Oct 20, 2021Observed: 459.4 ft at 4:00PM Oct 20, 2021Observed: 459.39 ft at 4:30PM Oct 20, 2021Observed: 459.51 ft at 5:00PM Oct 20, 2021Observed: 459.4 ft at 5:30PM Oct 20, 2021Observed: 459.3 ft at 6:00PM Oct 20, 2021Observed: 459.25 ft at 6:30PM Oct 20, 2021Observed: 459.23 ft at 7:00PM Oct 20, 2021Observed: 459.23 ft at 7:30PM Oct 20, 2021Observed: 459.23 ft at 8:00PM Oct 20, 2021Observed: 459.19 ft at 8:30PM Oct 20, 2021Observed: 459.42 ft at 9:00PM Oct 20, 2021Observed: 459.12 ft at 9:30PM Oct 20, 2021Observed: 459.19 ft at 10:00PM Oct 20, 2021Observed: 459.18 ft at 10:30PM Oct 20, 2021Observed: 459.23 ft at 11:00PM Oct 20, 2021Observed: 459.55 ft at 11:30PM Oct 20, 2021Observed: 459.49 ft at 12:00AM Oct 21, 2021Observed: 459.52 ft at 12:30AM Oct 21, 2021Observed: 459.3 ft at 1:00AM Oct 21, 2021Observed: 459.18 ft at 1:30AM Oct 21, 2021Observed: 459.08 ft at 2:00AM Oct 21, 2021Observed: 459.09 ft at 2:30AM Oct 21, 2021Observed: 459.08 ft at 3:00AM Oct 21, 2021Observed: 459.26 ft at 3:30AM Oct 21, 2021Observed: 459.05 ft at 4:00AM Oct 21, 2021Observed: 459.35 ft at 4:30AM Oct 21, 2021Observed: 459.3 ft at 5:00AM Oct 21, 2021Observed: 459.14 ft at 5:30AM Oct 21, 2021Observed: 459.1 ft at 6:00AM Oct 21, 2021Observed: 459.06 ft at 6:30AM Oct 21, 2021Observed: 459.05 ft at 7:00AM Oct 21, 2021Observed: 459.08 ft at 7:30AM Oct 21, 2021Observed: 459.2 ft at 8:00AM Oct 21, 2021Observed: 459.18 ft at 8:30AM Oct 21, 2021Observed: 459.15 ft at 9:00AM Oct 21, 2021Observed: 459.28 ft at 9:30AM Oct 21, 2021Observed: 459.34 ft at 10:00AM Oct 21, 2021Observed: 459.38 ft at 10:30AM Oct 21, 2021Observed: 459.38 ft at 11:00AM Oct 21, 2021Observed: 459.39 ft at 11:30AM Oct 21, 2021Observed: 459.4 ft at 12:00PM Oct 21, 2021Observed: 459.4 ft at 12:30PM Oct 21, 2021Observed: 459.4 ft at 1:00PM Oct 21, 2021Observed: 459.43 ft at 1:30PM Oct 21, 2021Observed: 459.48 ft at 2:00PM Oct 21, 2021Observed: 459.48 ft at 2:30PM Oct 21, 2021Observed: 459.37 ft at 3:00PM Oct 21, 2021Observed: 459.38 ft at 3:30PM Oct 21, 2021Observed: 459.37 ft at 4:30PM Oct 21, 2021Observed: 459.35 ft at 5:00PM Oct 21, 2021Observed: 459.6 ft at 5:30PM Oct 21, 2021Highest Forecast: 459.2 ft 7:00PM Oct 21, 2021Forecast: 459.1 ft 1:00AM Oct 22, 2021Forecast: 459.1 ft 7:00AM Oct 22, 2021Forecast: 459.1 ft 1:00PM Oct 22, 2021Forecast: 459.1 ft 7:00PM Oct 22, 2021Forecast: 459.1 ft 1:00AM Oct 23, 2021Forecast: 459.1 ft 7:00AM Oct 23, 2021Forecast: 459.1 ft 1:00PM Oct 23, 2021Forecast: 459.1 ft 7:00PM Oct 23, 2021Forecast: 459.1 ft 1:00AM Oct 24, 2021Forecast: 459.1 ft 7:00AM Oct 24, 2021Forecast: 459.1 ft 1:00PM Oct 24, 2021Forecast: 459 ft 7:00PM Oct 24, 2021Forecast: 459 ft 1:00AM Oct 25, 2021Forecast: 459 ft 7:00AM Oct 25, 2021Forecast: 459 ft 1:00PM Oct 25, 2021Forecast: 459 ft 7:00PM Oct 25, 2021Forecast: 459 ft 1:00AM Oct 26, 2021Forecast: 459 ft 7:00AM Oct 26, 2021Forecast: 459 ft 1:00PM Oct 26, 2021Forecast: 459 ft 7:00PM Oct 26, 2021Forecast: 459 ft 1:00AM Oct 27, 2021Forecast: 459 ft 7:00AM Oct 27, 2021Forecast: 459 ft 1:00PM Oct 27, 2021Forecast: 459 ft 7:00PM Oct 27, 2021Forecast: 459 ft 1:00AM Oct 28, 2021Forecast: 459 ft 7:00AM Oct 28, 2021USGS--Water Resources of the United StatesMMOI2(plotting HTIRG) Graph Created (6:25PM Oct 21, 2021)ObservedForecast (issued 10:14AM Oct 21)Latest observed value: 459.6 ft at 5:30 PM CDT 21-Oct-2021. 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 & Dam (tailwater) are issued routinely year-round.

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Upstream Gauge - at Morris Upstream Gauge Downstream Gauge Downstream Gauge - at Ottawa
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 467
Action Stage: 0
Low Stage (in feet): 456.5

Historic Crests
(1) 484.74 ft on 05/03/2019
(2) 476.72 ft on 04/19/2013
(3) 475.89 ft on 09/16/2008
(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) 484.74 ft on 05/03/2019
(2) 474.30 ft on 02/22/2018 (P)
(3) 469.00 ft on 05/02/2017
(4) 476.72 ft on 04/19/2013
(5) 472.33 ft on 12/29/2008
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.
Low Water Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
456.5 Low water levels begin to impact shipping interests along the river.
About This Location Collapse

Latitude: 41.325000° N, Longitude: 88.706944° 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?
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: 2-Nov-2020 7:29 PM
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