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Hydrograph River at a Glance Download
Illinois River at Starved Rock Lock (tailwater) Tailwater (ft)Flow (kcfs)Highest Observation: 453.57 ft at 8:00AM Jun 09, 2019Observed: 453.53 ft at 8:30AM Jun 09, 2019Observed: 453.54 ft at 9:00AM Jun 09, 2019Observed: 453.51 ft at 9:30AM Jun 09, 2019Observed: 453.5 ft at 10:00AM Jun 09, 2019Observed: 453.5 ft at 10:30AM Jun 09, 2019Observed: 453.5 ft at 11:00AM Jun 09, 2019Observed: 453.48 ft at 11:30AM Jun 09, 2019Observed: 453.46 ft at 12:00PM Jun 09, 2019Observed: 453.46 ft at 12:30PM Jun 09, 2019Observed: 453.47 ft at 1:00PM Jun 09, 2019Observed: 453.33 ft at 1:30PM Jun 09, 2019Observed: 453.25 ft at 2:00PM Jun 09, 2019Observed: 453.32 ft at 2:30PM Jun 09, 2019Observed: 453.23 ft at 3:00PM Jun 09, 2019Observed: 453.25 ft at 3:30PM Jun 09, 2019Observed: 453.22 ft at 4:00PM Jun 09, 2019Observed: 453.19 ft at 4:30PM Jun 09, 2019Observed: 453.18 ft at 5:00PM Jun 09, 2019Observed: 453.19 ft at 5:30PM Jun 09, 2019Observed: 453.16 ft at 6:00PM Jun 09, 2019Observed: 453.14 ft at 6:30PM Jun 09, 2019Observed: 453.11 ft at 7:00PM Jun 09, 2019Observed: 453.07 ft at 7:30PM Jun 09, 2019Observed: 453.21 ft at 8:00PM Jun 09, 2019Observed: 453.09 ft at 8:30PM Jun 09, 2019Observed: 453.09 ft at 9:00PM Jun 09, 2019Observed: 453.06 ft at 9:30PM Jun 09, 2019Observed: 453.04 ft at 10:00PM Jun 09, 2019Observed: 453.03 ft at 10:30PM Jun 09, 2019Observed: 453.05 ft at 11:00PM Jun 09, 2019Observed: 453.02 ft at 11:30PM Jun 09, 2019Observed: 453.02 ft at 12:00AM Jun 10, 2019Observed: 453.03 ft at 12:30AM Jun 10, 2019Observed: 453.01 ft at 1:00AM Jun 10, 2019Observed: 453.02 ft at 1:30AM Jun 10, 2019Observed: 453.01 ft at 2:00AM Jun 10, 2019Observed: 453 ft at 2:30AM Jun 10, 2019Observed: 453.02 ft at 3:00AM Jun 10, 2019Observed: 452.97 ft at 3:30AM Jun 10, 2019Observed: 452.98 ft at 4:00AM Jun 10, 2019Observed: 452.99 ft at 4:30AM Jun 10, 2019Observed: 452.91 ft at 5:00AM Jun 10, 2019Observed: 452.92 ft at 5:30AM Jun 10, 2019Observed: 452.95 ft at 6:00AM Jun 10, 2019Observed: 453 ft at 6:30AM Jun 10, 2019Observed: 452.93 ft at 7:00AM Jun 10, 2019Observed: 452.88 ft at 7:30AM Jun 10, 2019Observed: 452.86 ft at 8:00AM Jun 10, 2019Observed: 452.82 ft at 8:30AM Jun 10, 2019Observed: 452.82 ft at 9:00AM Jun 10, 2019Observed: 452.81 ft at 9:30AM Jun 10, 2019Observed: 452.77 ft at 10:00AM Jun 10, 2019Observed: 452.81 ft at 10:30AM Jun 10, 2019Observed: 452.76 ft at 11:00AM Jun 10, 2019Observed: 452.73 ft at 11:30AM Jun 10, 2019Observed: 452.73 ft at 12:00PM Jun 10, 2019Observed: 452.75 ft at 12:30PM Jun 10, 2019Observed: 452.76 ft at 1:00PM Jun 10, 2019Observed: 452.75 ft at 1:30PM Jun 10, 2019Observed: 452.7 ft at 2:00PM Jun 10, 2019Observed: 452.74 ft at 2:30PM Jun 10, 2019Observed: 452.68 ft at 3:00PM Jun 10, 2019Observed: 452.71 ft at 3:30PM Jun 10, 2019Observed: 452.67 ft at 4:00PM Jun 10, 2019Observed: 452.71 ft at 4:30PM Jun 10, 2019Observed: 452.69 ft at 5:00PM Jun 10, 2019Observed: 452.67 ft at 5:30PM Jun 10, 2019Observed: 452.55 ft at 6:00PM Jun 10, 2019Observed: 452.58 ft at 6:30PM Jun 10, 2019Observed: 452.5 ft at 7:00PM Jun 10, 2019Observed: 452.46 ft at 7:30PM Jun 10, 2019Observed: 452.45 ft at 8:00PM Jun 10, 2019Observed: 452.48 ft at 8:30PM Jun 10, 2019Observed: 452.41 ft at 9:00PM Jun 10, 2019Observed: 452.45 ft at 9:30PM Jun 10, 2019Observed: 452.41 ft at 10:00PM Jun 10, 2019Observed: 452.43 ft at 10:30PM Jun 10, 2019Observed: 452.35 ft at 11:00PM Jun 10, 2019Observed: 452.28 ft at 11:30PM Jun 10, 2019Observed: 452.42 ft at 12:00AM Jun 11, 2019Observed: 452.37 ft at 12:30AM Jun 11, 2019Observed: 452.37 ft at 1:00AM Jun 11, 2019Observed: 452.38 ft at 1:30AM Jun 11, 2019Observed: 452.36 ft at 2:00AM Jun 11, 2019Observed: 452.32 ft at 2:30AM Jun 11, 2019Observed: 452.4 ft at 3:00AM Jun 11, 2019Observed: 452.33 ft at 3:30AM Jun 11, 2019Observed: 452.34 ft at 4:00AM Jun 11, 2019Observed: 452.34 ft at 4:30AM Jun 11, 2019Observed: 452.35 ft at 5:00AM Jun 11, 2019Observed: 452.31 ft at 5:30AM Jun 11, 2019Observed: 452.31 ft at 6:00AM Jun 11, 2019Observed: 452.31 ft at 6:30AM Jun 11, 2019Observed: 452.32 ft at 7:00AM Jun 11, 2019Observed: 452.28 ft at 7:30AM Jun 11, 2019Observed: 452.28 ft at 8:00AM Jun 11, 2019Observed: 452.3 ft at 8:30AM Jun 11, 2019Observed: 452.32 ft at 9:00AM Jun 11, 2019Observed: 452.45 ft at 9:30AM Jun 11, 2019Observed: 452.42 ft at 10:00AM Jun 11, 2019Observed: 452.39 ft at 10:30AM Jun 11, 2019Observed: 452.34 ft at 11:00AM Jun 11, 2019Observed: 452.37 ft at 11:30AM Jun 11, 2019Observed: 452.37 ft at 12:00PM Jun 11, 2019Observed: 452.37 ft at 12:30PM Jun 11, 2019Observed: 452.18 ft at 1:00PM Jun 11, 2019Observed: 452.28 ft at 1:30PM Jun 11, 2019Observed: 451.86 ft at 2:00PM Jun 11, 2019Observed: 451.98 ft at 2:30PM Jun 11, 2019Observed: 451.97 ft at 3:00PM Jun 11, 2019Observed: 451.85 ft at 3:30PM Jun 11, 2019Observed: 451.87 ft at 4:00PM Jun 11, 2019Observed: 451.8 ft at 4:30PM Jun 11, 2019Observed: 451.79 ft at 5:00PM Jun 11, 2019Observed: 451.76 ft at 5:30PM Jun 11, 2019Observed: 451.73 ft at 6:00PM Jun 11, 2019Observed: 451.76 ft at 6:30PM Jun 11, 2019Observed: 451.69 ft at 7:00PM Jun 11, 2019Observed: 451.69 ft at 7:30PM Jun 11, 2019Observed: 451.86 ft at 8:00PM Jun 11, 2019Observed: 451.75 ft at 8:30PM Jun 11, 2019Observed: 451.79 ft at 9:00PM Jun 11, 2019Observed: 451.76 ft at 9:30PM Jun 11, 2019Observed: 451.74 ft at 10:00PM Jun 11, 2019Observed: 451.75 ft at 10:30PM Jun 11, 2019Observed: 451.75 ft at 11:00PM Jun 11, 2019Observed: 451.71 ft at 11:30PM Jun 11, 2019Observed: 451.69 ft at 12:00AM Jun 12, 2019Observed: 451.69 ft at 12:30AM Jun 12, 2019Observed: 451.68 ft at 1:00AM Jun 12, 2019Observed: 451.69 ft at 1:30AM Jun 12, 2019Observed: 451.64 ft at 2:00AM Jun 12, 2019Observed: 451.65 ft at 2:30AM Jun 12, 2019Observed: 451.55 ft at 3:00AM Jun 12, 2019Observed: 451.54 ft at 3:30AM Jun 12, 2019Observed: 451.57 ft at 4:00AM Jun 12, 2019Observed: 451.52 ft at 4:30AM Jun 12, 2019Observed: 451.51 ft at 5:00AM Jun 12, 2019Observed: 451.53 ft at 5:30AM Jun 12, 2019Observed: 451.5 ft at 6:00AM Jun 12, 2019Observed: 451.5 ft at 6:30AM Jun 12, 2019Observed: 451.48 ft at 7:00AM Jun 12, 2019Observed: 451.48 ft at 7:30AM Jun 12, 2019Observed: 451.65 ft at 8:00AM Jun 12, 2019Observed: 451.6 ft at 8:30AM Jun 12, 2019Observed: 451.63 ft at 9:00AM Jun 12, 2019Observed: 451.61 ft at 9:30AM Jun 12, 2019Observed: 451.86 ft at 10:00AM Jun 12, 2019Observed: 451.79 ft at 10:30AM Jun 12, 2019Observed: 451.85 ft at 11:00AM Jun 12, 2019Observed: 451.81 ft at 11:30AM Jun 12, 2019Observed: 451.82 ft at 12:00PM Jun 12, 2019Observed: 451.84 ft at 12:30PM Jun 12, 2019Observed: 451.83 ft at 1:00PM Jun 12, 2019Observed: 451.8 ft at 1:30PM Jun 12, 2019Observed: 451.8 ft at 2:00PM Jun 12, 2019Observed: 451.71 ft at 2:30PM Jun 12, 2019Observed: 451.65 ft at 3:00PM Jun 12, 2019Observed: 451.46 ft at 3:30PM Jun 12, 2019Observed: 451.45 ft at 4:00PM Jun 12, 2019Observed: 451.47 ft at 4:30PM Jun 12, 2019Observed: 451.42 ft at 5:00PM Jun 12, 2019Observed: 451.41 ft at 5:30PM Jun 12, 2019Observed: 451.39 ft at 6:00PM Jun 12, 2019Observed: 451.37 ft at 6:30PM Jun 12, 2019Observed: 451.35 ft at 7:00PM Jun 12, 2019Observed: 451.32 ft at 7:30PM Jun 12, 2019Observed: 451.31 ft at 8:00PM Jun 12, 2019Observed: 451.14 ft at 8:30PM Jun 12, 2019Observed: 451.14 ft at 9:00PM Jun 12, 2019Observed: 451.09 ft at 9:30PM Jun 12, 2019Observed: 451.13 ft at 10:00PM Jun 12, 2019Observed: 451.08 ft at 10:30PM Jun 12, 2019Observed: 451.06 ft at 11:00PM Jun 12, 2019Observed: 451.04 ft at 11:30PM Jun 12, 2019Observed: 451.01 ft at 12:00AM Jun 13, 2019Observed: 451.16 ft at 12:30AM Jun 13, 2019Observed: 451.2 ft at 1:00AM Jun 13, 2019Observed: 451.14 ft at 1:30AM Jun 13, 2019Observed: 451.15 ft at 2:00AM Jun 13, 2019Observed: 451.09 ft at 2:30AM Jun 13, 2019Observed: 451.18 ft at 3:00AM Jun 13, 2019Observed: 451.11 ft at 3:30AM Jun 13, 2019Observed: 451.14 ft at 4:00AM Jun 13, 2019Observed: 451.37 ft at 4:30AM Jun 13, 2019Observed: 451.16 ft at 5:00AM Jun 13, 2019Observed: 451.21 ft at 5:30AM Jun 13, 2019Observed: 451.1 ft at 6:00AM Jun 13, 2019Observed: 451.13 ft at 6:30AM Jun 13, 2019Observed: 451.14 ft at 7:00AM Jun 13, 2019Observed: 451.11 ft at 7:30AM Jun 13, 2019Observed: 451.1 ft at 8:00AM Jun 13, 2019Observed: 451.08 ft at 8:30AM Jun 13, 2019Observed: 451.1 ft at 9:00AM Jun 13, 2019Observed: 451.09 ft at 9:30AM Jun 13, 2019Observed: 451.04 ft at 10:00AM Jun 13, 2019Observed: 451.05 ft at 10:30AM Jun 13, 2019Observed: 451.03 ft at 11:00AM Jun 13, 2019Observed: 451.04 ft at 11:30AM Jun 13, 2019Observed: 451.02 ft at 12:00PM Jun 13, 2019Observed: 451 ft at 12:30PM Jun 13, 2019Observed: 451 ft at 1:00PM Jun 13, 2019Observed: 450.97 ft at 1:30PM Jun 13, 2019Observed: 450.93 ft at 2:00PM Jun 13, 2019Observed: 450.92 ft at 2:30PM Jun 13, 2019Observed: 450.91 ft at 3:00PM Jun 13, 2019Observed: 450.82 ft at 3:30PM Jun 13, 2019Observed: 450.89 ft at 4:00PM Jun 13, 2019Observed: 450.78 ft at 4:30PM Jun 13, 2019Observed: 450.73 ft at 5:00PM Jun 13, 2019Observed: 450.77 ft at 5:30PM Jun 13, 2019Observed: 450.74 ft at 6:00PM Jun 13, 2019Observed: 450.7 ft at 6:30PM Jun 13, 2019Observed: 450.71 ft at 7:00PM Jun 13, 2019Observed: 450.69 ft at 7:30PM Jun 13, 2019Observed: 450.59 ft at 8:00PM Jun 13, 2019Observed: 450.63 ft at 8:30PM Jun 13, 2019Observed: 450.63 ft at 9:00PM Jun 13, 2019Observed: 450.58 ft at 9:30PM Jun 13, 2019Observed: 450.59 ft at 10:00PM Jun 13, 2019Observed: 450.61 ft at 10:30PM Jun 13, 2019Observed: 450.63 ft at 11:00PM Jun 13, 2019Observed: 450.56 ft at 11:30PM Jun 13, 2019Observed: 450.63 ft at 12:00AM Jun 14, 2019Observed: 450.61 ft at 12:30AM Jun 14, 2019Observed: 450.47 ft at 1:00AM Jun 14, 2019Observed: 450.52 ft at 1:30AM Jun 14, 2019Observed: 450.56 ft at 2:00AM Jun 14, 2019Observed: 450.54 ft at 2:30AM Jun 14, 2019Observed: 450.51 ft at 3:00AM Jun 14, 2019Observed: 450.53 ft at 3:30AM Jun 14, 2019Observed: 450.51 ft at 4:00AM Jun 14, 2019Observed: 450.74 ft at 4:30AM Jun 14, 2019Observed: 450.86 ft at 5:00AM Jun 14, 2019Observed: 450.86 ft at 5:30AM Jun 14, 2019Observed: 450.84 ft at 6:00AM Jun 14, 2019Observed: 450.83 ft at 6:30AM Jun 14, 2019Observed: 450.88 ft at 7:00AM Jun 14, 2019Observed: 450.8 ft at 7:30AM Jun 14, 2019Observed: 450.76 ft at 8:00AM Jun 14, 2019Observed: 450.78 ft at 8:30AM Jun 14, 2019Observed: 450.59 ft at 9:00AM Jun 14, 2019Observed: 450.58 ft at 9:30AM Jun 14, 2019Observed: 450.46 ft at 10:00AM Jun 14, 2019Observed: 450.63 ft at 10:30AM Jun 14, 2019Observed: 450.6 ft at 11:00AM Jun 14, 2019Observed: 450.56 ft at 11:30AM Jun 14, 2019Observed: 450.57 ft at 12:00PM Jun 14, 2019Observed: 450.57 ft at 12:30PM Jun 14, 2019Observed: 450.55 ft at 1:00PM Jun 14, 2019Observed: 450.57 ft at 1:30PM Jun 14, 2019Observed: 450.56 ft at 2:00PM Jun 14, 2019Observed: 450.55 ft at 2:30PM Jun 14, 2019Observed: 450.54 ft at 3:00PM Jun 14, 2019Observed: 450.55 ft at 3:30PM Jun 14, 2019Observed: 450.53 ft at 4:00PM Jun 14, 2019Observed: 450.51 ft at 4:30PM Jun 14, 2019Observed: 450.52 ft at 5:00PM Jun 14, 2019Observed: 450.51 ft at 5:30PM Jun 14, 2019Observed: 450.52 ft at 6:00PM Jun 14, 2019Observed: 450.51 ft at 6:30PM Jun 14, 2019Observed: 450.52 ft at 7:00PM Jun 14, 2019Observed: 450.49 ft at 7:30PM Jun 14, 2019Observed: 450.58 ft at 8:00PM Jun 14, 2019Observed: 450.5 ft at 8:30PM Jun 14, 2019Observed: 450.49 ft at 9:00PM Jun 14, 2019Observed: 450.48 ft at 9:30PM Jun 14, 2019Observed: 450.45 ft at 10:00PM Jun 14, 2019Observed: 450.44 ft at 10:30PM Jun 14, 2019Observed: 450.44 ft at 11:00PM Jun 14, 2019Observed: 450.44 ft at 11:30PM Jun 14, 2019Observed: 450.4 ft at 12:00AM Jun 15, 2019Observed: 450.41 ft at 12:30AM Jun 15, 2019Observed: 450.4 ft at 1:00AM Jun 15, 2019Observed: 450.4 ft at 1:30AM Jun 15, 2019Observed: 450.48 ft at 2:00AM Jun 15, 2019Observed: 450.37 ft at 2:30AM Jun 15, 2019Observed: 450.43 ft at 3:00AM Jun 15, 2019Observed: 450.39 ft at 3:30AM Jun 15, 2019Observed: 450.34 ft at 4:00AM Jun 15, 2019Observed: 450.34 ft at 4:30AM Jun 15, 2019Observed: 450.33 ft at 5:00AM Jun 15, 2019Observed: 450.33 ft at 5:30AM Jun 15, 2019Observed: 450.31 ft at 6:00AM Jun 15, 2019Observed: 450.33 ft at 6:30AM Jun 15, 2019Observed: 450.31 ft at 7:00AM Jun 15, 2019Observed: 450.35 ft at 7:30AM Jun 15, 2019Observed: 450.3 ft at 8:00AM Jun 15, 2019Observed: 450.3 ft at 8:30AM Jun 15, 2019Observed: 450.3 ft at 9:00AM Jun 15, 2019Observed: 450.32 ft at 9:30AM Jun 15, 2019Observed: 450.31 ft at 10:00AM Jun 15, 2019Observed: 450.47 ft at 10:30AM Jun 15, 2019Observed: 450.46 ft at 11:00AM Jun 15, 2019Observed: 450.43 ft at 11:30AM Jun 15, 2019Observed: 450.45 ft at 12:00PM Jun 15, 2019Observed: 450.46 ft at 12:30PM Jun 15, 2019Observed: 450.47 ft at 1:00PM Jun 15, 2019Observed: 450.53 ft at 1:30PM Jun 15, 2019Observed: 450.54 ft at 2:00PM Jun 15, 2019Observed: 450.54 ft at 2:30PM Jun 15, 2019Observed: 450.51 ft at 3:00PM Jun 15, 2019Observed: 450.51 ft at 3:30PM Jun 15, 2019Observed: 450.5 ft at 4:00PM Jun 15, 2019Observed: 450.47 ft at 4:30PM Jun 15, 2019Observed: 450.28 ft at 5:00PM Jun 15, 2019Observed: 450.27 ft at 5:30PM Jun 15, 2019Observed: 450.32 ft at 6:00PM Jun 15, 2019Observed: 450.24 ft at 6:30PM Jun 15, 2019Observed: 450.23 ft at 7:00PM Jun 15, 2019Observed: 450.22 ft at 7:30PM Jun 15, 2019Observed: 450.15 ft at 8:00PM Jun 15, 2019Observed: 450.21 ft at 8:30PM Jun 15, 2019Observed: 450.24 ft at 9:00PM Jun 15, 2019Observed: 450.28 ft at 9:30PM Jun 15, 2019Observed: 450.28 ft at 10:00PM Jun 15, 2019Observed: 450.4 ft at 10:30PM Jun 15, 2019Observed: 450.41 ft at 11:00PM Jun 15, 2019Observed: 450.44 ft at 11:30PM Jun 15, 2019Observed: 450.53 ft at 12:00AM Jun 16, 2019Observed: 450.62 ft at 12:30AM Jun 16, 2019Observed: 450.64 ft at 1:00AM Jun 16, 2019Observed: 450.6 ft at 1:30AM Jun 16, 2019Observed: 450.69 ft at 2:00AM Jun 16, 2019Observed: 450.71 ft at 2:30AM Jun 16, 2019Observed: 450.71 ft at 3:00AM Jun 16, 2019Observed: 450.99 ft at 3:30AM Jun 16, 2019Observed: 451.03 ft at 4:00AM Jun 16, 2019Observed: 451.03 ft at 4:30AM Jun 16, 2019Observed: 451.03 ft at 5:00AM Jun 16, 2019Observed: 451 ft at 5:30AM Jun 16, 2019Observed: 451.17 ft at 6:00AM Jun 16, 2019Observed: 451.16 ft at 6:30AM Jun 16, 2019Observed: 451.2 ft at 7:00AM Jun 16, 2019Highest Forecast: 450.1 ft 1:00PM Jun 16, 2019Forecast: 450 ft 7:00PM Jun 16, 2019Forecast: 450 ft 1:00AM Jun 17, 2019Forecast: 449.9 ft 7:00AM Jun 17, 2019Forecast: 449.8 ft 1:00PM Jun 17, 2019Forecast: 449.7 ft 7:00PM Jun 17, 2019Forecast: 449.5 ft 1:00AM Jun 18, 2019Forecast: 449.4 ft 7:00AM Jun 18, 2019Forecast: 449.3 ft 1:00PM Jun 18, 2019Forecast: 449.1 ft 7:00PM Jun 18, 2019Forecast: 449 ft 1:00AM Jun 19, 2019Forecast: 448.9 ft 7:00AM Jun 19, 2019Forecast: 448.8 ft 1:00PM Jun 19, 2019Forecast: 448.7 ft 7:00PM Jun 19, 2019Forecast: 448.5 ft 1:00AM Jun 20, 2019Forecast: 448.4 ft 7:00AM Jun 20, 2019Forecast: 448.3 ft 1:00PM Jun 20, 2019Forecast: 448.2 ft 7:00PM Jun 20, 2019Forecast: 448.1 ft 1:00AM Jun 21, 2019Forecast: 448 ft 7:00AM Jun 21, 2019Forecast: 447.9 ft 1:00PM Jun 21, 2019Forecast: 447.8 ft 7:00PM Jun 21, 2019Forecast: 447.7 ft 1:00AM Jun 22, 2019Forecast: 447.6 ft 7:00AM Jun 22, 2019Forecast: 447.5 ft 1:00PM Jun 22, 2019Forecast: 447.3 ft 7:00PM Jun 22, 2019USACESRDI2(plotting HTIRG) Graph Created (7:54AM Jun 16, 2019)ObservedForecast (issued 8:53PM Jun 15)Latest observed value: 451.2 ft at 7:00 AM CDT 16-Jun-2019. Flood Stage is 450 ft
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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 Starved Rock Lock (tailwater) are issued routinely year-round.

Return to Area Map
Upstream Gauge - at Ottawa Upstream Gauge Downstream Gauge Downstream Gauge - near La Salle
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 450
Action Stage: 0
Low Stage (in feet): -9999

Historic Crests
(1) 467.81 ft on 04/19/2013
(2) 467.31 ft on 09/16/2008
(3) 464.70 ft on 12/05/1982
(4) 464.60 ft on 02/22/1997
(5) 463.65 ft on 02/22/2018 (P)
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 463.65 ft on 02/22/2018 (P)
(2) 453.33 ft on 10/16/2017 (P)
(3) 455.24 ft on 07/23/2017
(4) 459.51 ft on 05/02/2017
(5) 467.81 ft on 04/19/2013
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
459 Dee Bennet Road is threatened between Ottawa and Utica.
Photos
(1) Starved Rock
(2) Gates at lock and dam September 2010.
(3) Looking upstream. September 2010.
About This Location Collapse

Latitude: 41.324722° N, Longitude: 88.983889° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 450 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 0 ft 450 ft  

Current/Historical Observations:
Additional Information Collapse
How much forecast precipitation was used for the current river forecast?
How low could the river get?
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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