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Hydrograph River at a Glance Download
Illinois River at Starved Rock Lock (tailwater) Tailwater (ft)Flow (kcfs)Observed: 443.54 ft at 8:30PM Oct 17, 2021Observed: 443.53 ft at 9:00PM Oct 17, 2021Observed: 443.53 ft at 9:30PM Oct 17, 2021Highest Observation: 443.61 ft at 10:00PM Oct 17, 2021Observed: 443.43 ft at 10:30PM Oct 17, 2021Observed: 443.27 ft at 11:00PM Oct 17, 2021Observed: 443.22 ft at 11:30PM Oct 17, 2021Observed: 443.18 ft at 12:00AM Oct 18, 2021Observed: 443.14 ft at 12:30AM Oct 18, 2021Observed: 443.1 ft at 1:00AM Oct 18, 2021Observed: 443.05 ft at 1:30AM Oct 18, 2021Observed: 443.03 ft at 2:00AM Oct 18, 2021Observed: 443.12 ft at 2:30AM Oct 18, 2021Observed: 443 ft at 3:00AM Oct 18, 2021Observed: 443.01 ft at 3:30AM Oct 18, 2021Observed: 442.95 ft at 4:00AM Oct 18, 2021Observed: 442.96 ft at 4:30AM Oct 18, 2021Observed: 442.91 ft at 5:00AM Oct 18, 2021Observed: 443 ft at 5:30AM Oct 18, 2021Observed: 442.77 ft at 6:00AM Oct 18, 2021Observed: 442.88 ft at 6:30AM Oct 18, 2021Observed: 442.93 ft at 7:00AM Oct 18, 2021Observed: 442.89 ft at 7:30AM Oct 18, 2021Observed: 442.85 ft at 8:00AM Oct 18, 2021Observed: 442.83 ft at 8:30AM Oct 18, 2021Observed: 442.81 ft at 9:00AM Oct 18, 2021Observed: 442.8 ft at 9:30AM Oct 18, 2021Observed: 443.12 ft at 10:00AM Oct 18, 2021Observed: 442.65 ft at 10:30AM Oct 18, 2021Observed: 442.69 ft at 11:00AM Oct 18, 2021Observed: 442.73 ft at 11:30AM Oct 18, 2021Observed: 442.71 ft at 12:00PM Oct 18, 2021Observed: 442.62 ft at 12:30PM Oct 18, 2021Observed: 442.7 ft at 1:00PM Oct 18, 2021Observed: 442.39 ft at 1:30PM Oct 18, 2021Observed: 442.33 ft at 2:00PM Oct 18, 2021Observed: 442.31 ft at 2:30PM Oct 18, 2021Observed: 442.44 ft at 3:00PM Oct 18, 2021Observed: 442.45 ft at 3:30PM Oct 18, 2021Observed: 442.43 ft at 4:00PM Oct 18, 2021Observed: 442.42 ft at 4:30PM Oct 18, 2021Observed: 442.51 ft at 5:00PM Oct 18, 2021Observed: 442.44 ft at 5:30PM Oct 18, 2021Observed: 442.46 ft at 6:00PM Oct 18, 2021Observed: 442.47 ft at 6:30PM Oct 18, 2021Observed: 442.48 ft at 7:00PM Oct 18, 2021Observed: 442.53 ft at 7:30PM Oct 18, 2021Observed: 442.41 ft at 8:00PM Oct 18, 2021Observed: 442.43 ft at 8:30PM Oct 18, 2021Observed: 442.49 ft at 9:00PM Oct 18, 2021Observed: 442.57 ft at 9:30PM Oct 18, 2021Observed: 442.52 ft at 10:00PM Oct 18, 2021Observed: 442.32 ft at 10:30PM Oct 18, 2021Observed: 442.52 ft at 11:00PM Oct 18, 2021Observed: 442.48 ft at 11:30PM Oct 18, 2021Observed: 442.47 ft at 12:00AM Oct 19, 2021Observed: 442.52 ft at 12:30AM Oct 19, 2021Observed: 442.54 ft at 1:00AM Oct 19, 2021Observed: 442.42 ft at 1:30AM Oct 19, 2021Observed: 442.46 ft at 2:00AM Oct 19, 2021Observed: 442.47 ft at 2:30AM Oct 19, 2021Observed: 442.44 ft at 3:00AM Oct 19, 2021Observed: 442.45 ft at 3:30AM Oct 19, 2021Observed: 442.39 ft at 4:00AM Oct 19, 2021Observed: 442.31 ft at 4:30AM Oct 19, 2021Observed: 442.43 ft at 5:00AM Oct 19, 2021Observed: 442.51 ft at 5:30AM Oct 19, 2021Observed: 442.48 ft at 6:00AM Oct 19, 2021Observed: 442.51 ft at 6:30AM Oct 19, 2021Observed: 442.41 ft at 7:00AM Oct 19, 2021Observed: 442.5 ft at 7:30AM Oct 19, 2021Observed: 442.32 ft at 8:00AM Oct 19, 2021Observed: 442.48 ft at 8:30AM Oct 19, 2021Observed: 442.47 ft at 9:00AM Oct 19, 2021Observed: 442.45 ft at 9:30AM Oct 19, 2021Observed: 442.43 ft at 10:00AM Oct 19, 2021Observed: 442.45 ft at 10:30AM Oct 19, 2021Observed: 442.49 ft at 11:00AM Oct 19, 2021Observed: 442.43 ft at 11:30AM Oct 19, 2021Observed: 442.49 ft at 12:00PM Oct 19, 2021Observed: 442.48 ft at 12:30PM Oct 19, 2021Observed: 442.49 ft at 1:00PM Oct 19, 2021Observed: 442.4 ft at 1:30PM Oct 19, 2021Observed: 442.47 ft at 2:00PM Oct 19, 2021Observed: 442.63 ft at 2:30PM Oct 19, 2021Observed: 442.47 ft at 3:00PM Oct 19, 2021Observed: 442.54 ft at 3:30PM Oct 19, 2021Observed: 442.43 ft at 4:00PM Oct 19, 2021Observed: 442.49 ft at 4:30PM Oct 19, 2021Observed: 442.47 ft at 5:00PM Oct 19, 2021Observed: 442.48 ft at 5:30PM Oct 19, 2021Observed: 442.49 ft at 6:00PM Oct 19, 2021Observed: 443.04 ft at 6:30PM Oct 19, 2021Observed: 442.5 ft at 7:00PM Oct 19, 2021Observed: 442.49 ft at 7:30PM Oct 19, 2021Observed: 442.28 ft at 8:00PM Oct 19, 2021Observed: 442.1 ft at 8:30PM Oct 19, 2021Observed: 442.07 ft at 9:00PM Oct 19, 2021Observed: 442.04 ft at 9:30PM Oct 19, 2021Observed: 442.02 ft at 10:00PM Oct 19, 2021Observed: 442.11 ft at 10:30PM Oct 19, 2021Observed: 442.06 ft at 11:00PM Oct 19, 2021Observed: 442.08 ft at 11:30PM Oct 19, 2021Observed: 442.17 ft at 12:00AM Oct 20, 2021Observed: 442.11 ft at 12:30AM Oct 20, 2021Observed: 442.02 ft at 1:00AM Oct 20, 2021Observed: 442.07 ft at 1:30AM Oct 20, 2021Observed: 442.04 ft at 2:00AM Oct 20, 2021Observed: 442.12 ft at 2:30AM Oct 20, 2021Observed: 442.04 ft at 3:00AM Oct 20, 2021Observed: 441.98 ft at 3:30AM Oct 20, 2021Observed: 441.94 ft at 4:00AM Oct 20, 2021Observed: 441.92 ft at 4:30AM Oct 20, 2021Observed: 441.9 ft at 5:00AM Oct 20, 2021Observed: 441.82 ft at 5:30AM Oct 20, 2021Observed: 441.87 ft at 6:00AM Oct 20, 2021Observed: 441.84 ft at 6:30AM Oct 20, 2021Observed: 441.8 ft at 7:00AM Oct 20, 2021Observed: 441.77 ft at 7:30AM Oct 20, 2021Observed: 441.69 ft at 8:00AM Oct 20, 2021Observed: 441.75 ft at 8:30AM Oct 20, 2021Observed: 441.73 ft at 9:00AM Oct 20, 2021Observed: 441.71 ft at 9:30AM Oct 20, 2021Observed: 441.63 ft at 10:00AM Oct 20, 2021Observed: 441.8 ft at 10:30AM Oct 20, 2021Observed: 441.98 ft at 11:00AM Oct 20, 2021Observed: 442.01 ft at 11:30AM Oct 20, 2021Observed: 442.21 ft at 12:00PM Oct 20, 2021Observed: 442.06 ft at 12:30PM Oct 20, 2021Observed: 442.11 ft at 1:00PM Oct 20, 2021Observed: 442.1 ft at 1:30PM Oct 20, 2021Observed: 442.16 ft at 2:00PM Oct 20, 2021Observed: 442.47 ft at 2:30PM Oct 20, 2021Observed: 442.16 ft at 3:00PM Oct 20, 2021Observed: 442.21 ft at 3:30PM Oct 20, 2021Observed: 442.19 ft at 4:00PM Oct 20, 2021Observed: 442.25 ft at 4:30PM Oct 20, 2021Observed: 442.24 ft at 5:00PM Oct 20, 2021Observed: 442.23 ft at 5:30PM Oct 20, 2021Observed: 442.27 ft at 6:00PM Oct 20, 2021Observed: 442.26 ft at 6:30PM Oct 20, 2021Observed: 442.26 ft at 7:00PM Oct 20, 2021Observed: 442.13 ft at 7:30PM Oct 20, 2021Observed: 442.23 ft at 8:00PM Oct 20, 2021Observed: 442.05 ft at 8:30PM Oct 20, 2021Observed: 442.05 ft at 9:00PM Oct 20, 2021Observed: 442.05 ft at 9:30PM Oct 20, 2021Observed: 442.04 ft at 10:00PM Oct 20, 2021Observed: 442.05 ft at 10:30PM Oct 20, 2021Observed: 442.21 ft at 11:00PM Oct 20, 2021Observed: 442.13 ft at 11:30PM Oct 20, 2021Observed: 442.08 ft at 12:00AM Oct 21, 2021Observed: 442.03 ft at 12:30AM Oct 21, 2021Observed: 442 ft at 1:00AM Oct 21, 2021Observed: 441.97 ft at 1:30AM Oct 21, 2021Observed: 442.01 ft at 2:00AM Oct 21, 2021Observed: 441.96 ft at 2:30AM Oct 21, 2021Observed: 441.99 ft at 3:00AM Oct 21, 2021Observed: 441.7 ft at 3:30AM Oct 21, 2021Observed: 441.79 ft at 4:00AM Oct 21, 2021Observed: 441.93 ft at 4:30AM Oct 21, 2021Observed: 441.77 ft at 5:00AM Oct 21, 2021Observed: 441.84 ft at 5:30AM Oct 21, 2021Observed: 441.74 ft at 6:00AM Oct 21, 2021Observed: 441.86 ft at 6:30AM Oct 21, 2021Observed: 442.34 ft at 7:00AM Oct 21, 2021Observed: 441.86 ft at 7:30AM Oct 21, 2021Observed: 441.62 ft at 8:00AM Oct 21, 2021Observed: 441.62 ft at 8:30AM Oct 21, 2021Observed: 441.56 ft at 9:00AM Oct 21, 2021Observed: 441.81 ft at 9:30AM Oct 21, 2021Observed: 441.78 ft at 10:00AM Oct 21, 2021Observed: 441.8 ft at 10:30AM Oct 21, 2021Observed: 441.87 ft at 11:00AM Oct 21, 2021Observed: 441.82 ft at 11:30AM Oct 21, 2021Observed: 441.94 ft at 12:00PM Oct 21, 2021Observed: 441.98 ft at 12:30PM Oct 21, 2021Observed: 442.02 ft at 1:00PM Oct 21, 2021Observed: 442 ft at 1:30PM Oct 21, 2021Observed: 442.13 ft at 2:00PM Oct 21, 2021Observed: 442.13 ft at 2:30PM Oct 21, 2021Observed: 442.07 ft at 3:00PM Oct 21, 2021Observed: 442.1 ft at 3:30PM Oct 21, 2021Observed: 442.09 ft at 4:00PM Oct 21, 2021Observed: 442.23 ft at 4:30PM Oct 21, 2021Observed: 442.06 ft at 5:00PM Oct 21, 2021Observed: 442.09 ft at 5:30PM Oct 21, 2021Observed: 442.06 ft at 6:00PM Oct 21, 2021Observed: 442.11 ft at 6:30PM Oct 21, 2021Observed: 442.2 ft at 7:00PM Oct 21, 2021Observed: 442.18 ft at 7:30PM Oct 21, 2021Observed: 442.16 ft at 8:00PM Oct 21, 2021Observed: 442.19 ft at 8:30PM Oct 21, 2021Observed: 442.23 ft at 9:00PM Oct 21, 2021Observed: 442.22 ft at 9:30PM Oct 21, 2021Observed: 442.23 ft at 10:00PM Oct 21, 2021Observed: 442.17 ft at 10:30PM Oct 21, 2021Observed: 442.15 ft at 11:00PM Oct 21, 2021Observed: 442.11 ft at 11:30PM Oct 21, 2021Observed: 442.07 ft at 12:00AM Oct 22, 2021Observed: 442.04 ft at 12:30AM Oct 22, 2021Observed: 441.93 ft at 1:00AM Oct 22, 2021Observed: 441.86 ft at 1:30AM Oct 22, 2021Observed: 441.86 ft at 2:00AM Oct 22, 2021Observed: 441.73 ft at 2:30AM Oct 22, 2021Observed: 441.69 ft at 3:00AM Oct 22, 2021Observed: 441.65 ft at 3:30AM Oct 22, 2021Observed: 441.67 ft at 4:00AM Oct 22, 2021Observed: 441.58 ft at 4:30AM Oct 22, 2021Observed: 441.56 ft at 5:00AM Oct 22, 2021Observed: 441.56 ft at 5:30AM Oct 22, 2021Observed: 441.54 ft at 6:00AM Oct 22, 2021Observed: 441.44 ft at 6:30AM Oct 22, 2021Observed: 441.43 ft at 7:00AM Oct 22, 2021Observed: 441.4 ft at 7:30AM Oct 22, 2021Observed: 441.39 ft at 8:00AM Oct 22, 2021Observed: 441.38 ft at 8:30AM Oct 22, 2021Observed: 441.31 ft at 9:00AM Oct 22, 2021Observed: 441.3 ft at 9:30AM Oct 22, 2021Observed: 441.33 ft at 10:00AM Oct 22, 2021Observed: 441.53 ft at 10:30AM Oct 22, 2021Observed: 441.23 ft at 11:00AM Oct 22, 2021Observed: 441.32 ft at 11:30AM Oct 22, 2021Observed: 441.32 ft at 12:00PM Oct 22, 2021Observed: 441.34 ft at 12:30PM Oct 22, 2021Observed: 441.1 ft at 1:00PM Oct 22, 2021Observed: 441.17 ft at 1:30PM Oct 22, 2021Observed: 441.2 ft at 2:00PM Oct 22, 2021Observed: 441.33 ft at 2:30PM Oct 22, 2021Observed: 441.31 ft at 3:00PM Oct 22, 2021Observed: 441.38 ft at 3:30PM Oct 22, 2021Observed: 441.44 ft at 4:00PM Oct 22, 2021Observed: 441.58 ft at 4:30PM Oct 22, 2021Observed: 441.6 ft at 5:00PM Oct 22, 2021Observed: 441.64 ft at 5:30PM Oct 22, 2021Observed: 441.66 ft at 6:00PM Oct 22, 2021Observed: 441.68 ft at 6:30PM Oct 22, 2021Observed: 441.7 ft at 7:00PM Oct 22, 2021Observed: 441.7 ft at 7:30PM Oct 22, 2021Observed: 441.73 ft at 8:00PM Oct 22, 2021Observed: 441.73 ft at 8:30PM Oct 22, 2021Observed: 441.72 ft at 9:00PM Oct 22, 2021Observed: 441.71 ft at 9:30PM Oct 22, 2021Observed: 441.7 ft at 10:00PM Oct 22, 2021Observed: 441.86 ft at 10:30PM Oct 22, 2021Observed: 441.67 ft at 11:00PM Oct 22, 2021Observed: 441.7 ft at 11:30PM Oct 22, 2021Observed: 441.68 ft at 12:00AM Oct 23, 2021Observed: 441.69 ft at 12:30AM Oct 23, 2021Observed: 441.68 ft at 1:00AM Oct 23, 2021Observed: 441.69 ft at 1:30AM Oct 23, 2021Observed: 441.76 ft at 2:00AM Oct 23, 2021Observed: 441.71 ft at 2:30AM Oct 23, 2021Observed: 441.53 ft at 3:00AM Oct 23, 2021Observed: 441.39 ft at 3:30AM Oct 23, 2021Observed: 441.34 ft at 4:00AM Oct 23, 2021Observed: 441.33 ft at 4:30AM Oct 23, 2021Observed: 441.34 ft at 5:00AM Oct 23, 2021Observed: 441.18 ft at 5:30AM Oct 23, 2021Observed: 441.02 ft at 6:00AM Oct 23, 2021Observed: 440.98 ft at 6:30AM Oct 23, 2021Observed: 440.57 ft at 7:00AM Oct 23, 2021Observed: 440.82 ft at 7:30AM Oct 23, 2021Observed: 440.71 ft at 8:00AM Oct 23, 2021Observed: 440.94 ft at 8:30AM Oct 23, 2021Observed: 441.14 ft at 9:00AM Oct 23, 2021Observed: 441.08 ft at 9:30AM Oct 23, 2021Observed: 441.29 ft at 10:00AM Oct 23, 2021Observed: 441.33 ft at 10:30AM Oct 23, 2021Observed: 441.45 ft at 11:00AM Oct 23, 2021Observed: 441.34 ft at 11:30AM Oct 23, 2021Observed: 441.39 ft at 12:00PM Oct 23, 2021Observed: 441.41 ft at 12:30PM Oct 23, 2021Observed: 441.36 ft at 1:00PM Oct 23, 2021Observed: 441.4 ft at 1:30PM Oct 23, 2021Observed: 441.53 ft at 2:00PM Oct 23, 2021Observed: 441.52 ft at 2:30PM Oct 23, 2021Observed: 441.49 ft at 3:00PM Oct 23, 2021Observed: 441.36 ft at 3:30PM Oct 23, 2021Observed: 441.43 ft at 4:00PM Oct 23, 2021Observed: 441.53 ft at 4:30PM Oct 23, 2021Observed: 441.47 ft at 5:00PM Oct 23, 2021Observed: 441.75 ft at 5:30PM Oct 23, 2021Observed: 441.65 ft at 6:00PM Oct 23, 2021Observed: 441.68 ft at 6:30PM Oct 23, 2021Observed: 441.56 ft at 7:00PM Oct 23, 2021Observed: 441.44 ft at 7:30PM Oct 23, 2021Observed: 441.47 ft at 8:00PM Oct 23, 2021Observed: 441.51 ft at 8:30PM Oct 23, 2021Observed: 441.44 ft at 9:00PM Oct 23, 2021Observed: 441.4 ft at 9:30PM Oct 23, 2021Observed: 441.34 ft at 10:00PM Oct 23, 2021Observed: 441.38 ft at 10:30PM Oct 23, 2021Observed: 441.21 ft at 11:00PM Oct 23, 2021Observed: 441.13 ft at 11:30PM Oct 23, 2021Observed: 441.2 ft at 12:00AM Oct 24, 2021Observed: 441.1 ft at 12:30AM Oct 24, 2021Observed: 441.08 ft at 1:00AM Oct 24, 2021Observed: 441.02 ft at 1:30AM Oct 24, 2021Observed: 440.91 ft at 2:00AM Oct 24, 2021Observed: 441.04 ft at 2:30AM Oct 24, 2021Observed: 440.96 ft at 3:00AM Oct 24, 2021Observed: 440.92 ft at 3:30AM Oct 24, 2021Observed: 440.92 ft at 4:00AM Oct 24, 2021Observed: 440.92 ft at 4:30AM Oct 24, 2021Observed: 440.9 ft at 5:00AM Oct 24, 2021Observed: 440.88 ft at 5:30AM Oct 24, 2021Observed: 440.7 ft at 6:00AM Oct 24, 2021Observed: 440.86 ft at 6:30AM Oct 24, 2021Observed: 440.72 ft at 7:00AM Oct 24, 2021Observed: 440.7 ft at 7:30AM Oct 24, 2021Observed: 440.7 ft at 8:00AM Oct 24, 2021Observed: 440.81 ft at 8:30AM Oct 24, 2021Observed: 440.92 ft at 9:00AM Oct 24, 2021Observed: 440.9 ft at 9:30AM Oct 24, 2021Observed: 441.03 ft at 10:00AM Oct 24, 2021Observed: 441.19 ft at 10:30AM Oct 24, 2021Observed: 441.23 ft at 11:00AM Oct 24, 2021Observed: 441.46 ft at 11:30AM Oct 24, 2021Observed: 441.32 ft at 12:00PM Oct 24, 2021Observed: 441.32 ft at 12:30PM Oct 24, 2021Observed: 441.37 ft at 1:00PM Oct 24, 2021Observed: 441.82 ft at 1:30PM Oct 24, 2021Observed: 441.76 ft at 2:00PM Oct 24, 2021Observed: 442.59 ft at 2:30PM Oct 24, 2021Observed: 443.05 ft at 3:00PM Oct 24, 2021Observed: 443.28 ft at 3:30PM Oct 24, 2021Observed: 442.91 ft at 4:00PM Oct 24, 2021Observed: 442.94 ft at 4:30PM Oct 24, 2021Observed: 443 ft at 5:00PM Oct 24, 2021Observed: 443.02 ft at 5:30PM Oct 24, 2021Observed: 443.07 ft at 6:00PM Oct 24, 2021Observed: 443.07 ft at 6:30PM Oct 24, 2021Observed: 443.09 ft at 7:00PM Oct 24, 2021Forecast: 443.3 ft 1:00AM Oct 25, 2021Forecast: 445.2 ft 7:00AM Oct 25, 2021Forecast: 447.2 ft 1:00PM Oct 25, 2021Forecast: 449.2 ft 7:00PM Oct 25, 2021Forecast: 450.7 ft 1:00AM Oct 26, 2021Forecast: 452.1 ft 7:00AM Oct 26, 2021Forecast: 453.3 ft 1:00PM Oct 26, 2021Forecast: 454.2 ft 7:00PM Oct 26, 2021Forecast: 454.8 ft 1:00AM Oct 27, 2021Highest Forecast: 455 ft 7:00AM Oct 27, 2021Forecast: 454.6 ft 1:00PM Oct 27, 2021Forecast: 454.2 ft 7:00PM Oct 27, 2021Forecast: 453.7 ft 1:00AM Oct 28, 2021Forecast: 453.3 ft 7:00AM Oct 28, 2021Forecast: 452.8 ft 1:00PM Oct 28, 2021Forecast: 452.4 ft 7:00PM Oct 28, 2021Forecast: 452 ft 1:00AM Oct 29, 2021Forecast: 451.6 ft 7:00AM Oct 29, 2021Forecast: 451.3 ft 1:00PM Oct 29, 2021Forecast: 451 ft 7:00PM Oct 29, 2021Forecast: 450.7 ft 1:00AM Oct 30, 2021Forecast: 450.4 ft 7:00AM Oct 30, 2021Forecast: 450.1 ft 1:00PM Oct 30, 2021Forecast: 449.8 ft 7:00PM Oct 30, 2021Forecast: 449.6 ft 1:00AM Oct 31, 2021Forecast: 449.3 ft 7:00AM Oct 31, 2021USACESRDI2(plotting HTIRG) Graph Created (8:24PM Oct 24, 2021)ObservedForecast (issued 11:18AM Oct 24)Latest observed value: 443.09 ft at 7:00 PM CDT 24-Oct-2021. Flood Stage is 450 ft
Printable Image
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 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: 449
Low Stage (in feet): 438.7

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) 464.61 ft on 05/03/2019 (P)
(5) 464.60 ft on 02/22/1997
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 464.61 ft on 05/03/2019 (P)
(2) 463.65 ft on 02/22/2018 (P)
(3) 453.33 ft on 10/16/2017 (P)
(4) 455.24 ft on 07/23/2017
(5) 459.51 ft on 05/02/2017
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
467.5 North Utica Village Hall and North Utica Police Department are threatened.
464.5 A few residences threatened in North Utica. IL-178 (Clark Street) threatened in North Utica.
463 A couple structures threatened in North Utica.
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.
Low Water Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
438.7 Low water levels begin to impact shipping interests along the river.
About This Location Collapse

Latitude: 41.324722° N, Longitude: 88.983889° W, Horizontal Datum: Unknown

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 450.0 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?
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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