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Hydrograph River at a Glance Download
Illinois River at Starved Rock Lock (tailwater) Tailwater (ft)Flow (kcfs)Observed: 443.28 ft at 12:00AM Feb 25, 2024Observed: 443.27 ft at 12:30AM Feb 25, 2024Observed: 443.28 ft at 1:00AM Feb 25, 2024Observed: 443.28 ft at 1:30AM Feb 25, 2024Observed: 443.29 ft at 2:00AM Feb 25, 2024Observed: 443.28 ft at 2:30AM Feb 25, 2024Observed: 442.89 ft at 3:00AM Feb 25, 2024Observed: 442.82 ft at 3:30AM Feb 25, 2024Observed: 442.73 ft at 4:00AM Feb 25, 2024Observed: 442.67 ft at 4:30AM Feb 25, 2024Observed: 442.62 ft at 5:00AM Feb 25, 2024Observed: 442.58 ft at 5:30AM Feb 25, 2024Observed: 442.52 ft at 6:00AM Feb 25, 2024Observed: 442.53 ft at 6:30AM Feb 25, 2024Observed: 442.72 ft at 7:00AM Feb 25, 2024Observed: 442.5 ft at 7:30AM Feb 25, 2024Observed: 442.46 ft at 8:00AM Feb 25, 2024Observed: 442.45 ft at 8:30AM Feb 25, 2024Observed: 442.41 ft at 9:00AM Feb 25, 2024Observed: 442.74 ft at 9:30AM Feb 25, 2024Observed: 442.6 ft at 10:00AM Feb 25, 2024Observed: 442.42 ft at 10:30AM Feb 25, 2024Observed: 442.44 ft at 11:00AM Feb 25, 2024Observed: 442.57 ft at 11:30AM Feb 25, 2024Observed: 442.38 ft at 12:00PM Feb 25, 2024Observed: 442.36 ft at 12:30PM Feb 25, 2024Observed: 442.33 ft at 1:00PM Feb 25, 2024Observed: 442.48 ft at 1:30PM Feb 25, 2024Observed: 442.4 ft at 2:00PM Feb 25, 2024Observed: 442.3 ft at 2:30PM Feb 25, 2024Observed: 442.32 ft at 3:00PM Feb 25, 2024Observed: 442.3 ft at 3:30PM Feb 25, 2024Observed: 442.27 ft at 4:00PM Feb 25, 2024Observed: 442.44 ft at 4:30PM Feb 25, 2024Observed: 442.24 ft at 5:00PM Feb 25, 2024Observed: 442.42 ft at 5:30PM Feb 25, 2024Observed: 442.59 ft at 6:00PM Feb 25, 2024Observed: 442.65 ft at 6:30PM Feb 25, 2024Observed: 442.7 ft at 7:00PM Feb 25, 2024Observed: 442.83 ft at 7:30PM Feb 25, 2024Observed: 442.63 ft at 8:00PM Feb 25, 2024Observed: 442.93 ft at 8:30PM Feb 25, 2024Observed: 442.83 ft at 9:00PM Feb 25, 2024Observed: 442.88 ft at 9:30PM Feb 25, 2024Observed: 442.9 ft at 10:00PM Feb 25, 2024Observed: 442.91 ft at 10:30PM Feb 25, 2024Observed: 442.9 ft at 11:00PM Feb 25, 2024Observed: 442.92 ft at 11:30PM Feb 25, 2024Observed: 442.95 ft at 12:00AM Feb 26, 2024Observed: 442.96 ft at 12:30AM Feb 26, 2024Observed: 442.97 ft at 1:00AM Feb 26, 2024Observed: 443.07 ft at 1:30AM Feb 26, 2024Observed: 442.88 ft at 2:00AM Feb 26, 2024Observed: 442.96 ft at 2:30AM Feb 26, 2024Observed: 443.01 ft at 3:00AM Feb 26, 2024Observed: 442.93 ft at 3:30AM Feb 26, 2024Observed: 442.97 ft at 4:00AM Feb 26, 2024Observed: 442.95 ft at 4:30AM Feb 26, 2024Observed: 442.94 ft at 5:00AM Feb 26, 2024Observed: 442.97 ft at 5:30AM Feb 26, 2024Observed: 442.95 ft at 6:00AM Feb 26, 2024Observed: 442.97 ft at 6:30AM Feb 26, 2024Observed: 442.97 ft at 7:00AM Feb 26, 2024Observed: 442.97 ft at 7:30AM Feb 26, 2024Observed: 443.02 ft at 8:00AM Feb 26, 2024Observed: 442.86 ft at 8:30AM Feb 26, 2024Observed: 443.04 ft at 9:00AM Feb 26, 2024Observed: 443.04 ft at 9:30AM Feb 26, 2024Observed: 443.05 ft at 10:00AM Feb 26, 2024Observed: 442.84 ft at 10:30AM Feb 26, 2024Observed: 442.8 ft at 11:00AM Feb 26, 2024Observed: 442.75 ft at 11:30AM Feb 26, 2024Observed: 442.73 ft at 12:00PM Feb 26, 2024Observed: 442.73 ft at 12:30PM Feb 26, 2024Observed: 442.7 ft at 1:00PM Feb 26, 2024Observed: 442.71 ft at 1:30PM Feb 26, 2024Observed: 442.69 ft at 2:00PM Feb 26, 2024Observed: 442.67 ft at 2:30PM Feb 26, 2024Observed: 442.7 ft at 3:00PM Feb 26, 2024Observed: 442.67 ft at 3:30PM Feb 26, 2024Observed: 442.67 ft at 4:00PM Feb 26, 2024Observed: 442.66 ft at 4:30PM Feb 26, 2024Observed: 442.64 ft at 5:00PM Feb 26, 2024Observed: 442.65 ft at 5:30PM Feb 26, 2024Observed: 442.62 ft at 6:00PM Feb 26, 2024Observed: 442.64 ft at 6:30PM Feb 26, 2024Observed: 442.62 ft at 7:00PM Feb 26, 2024Observed: 442.64 ft at 7:30PM Feb 26, 2024Observed: 442.62 ft at 8:00PM Feb 26, 2024Observed: 442.64 ft at 8:30PM Feb 26, 2024Observed: 442.65 ft at 9:00PM Feb 26, 2024Observed: 442.64 ft at 9:30PM Feb 26, 2024Observed: 442.67 ft at 10:00PM Feb 26, 2024Observed: 442.7 ft at 10:30PM Feb 26, 2024Observed: 442.64 ft at 11:00PM Feb 26, 2024Observed: 442.67 ft at 11:30PM Feb 26, 2024Observed: 442.69 ft at 12:00AM Feb 27, 2024Observed: 442.47 ft at 12:30AM Feb 27, 2024Observed: 442.42 ft at 1:00AM Feb 27, 2024Observed: 442.36 ft at 1:30AM Feb 27, 2024Observed: 442.31 ft at 2:00AM Feb 27, 2024Observed: 442.29 ft at 2:30AM Feb 27, 2024Observed: 442.24 ft at 3:00AM Feb 27, 2024Observed: 442.24 ft at 3:30AM Feb 27, 2024Observed: 442.24 ft at 4:00AM Feb 27, 2024Observed: 442.15 ft at 4:30AM Feb 27, 2024Observed: 442.14 ft at 5:00AM Feb 27, 2024Observed: 442.11 ft at 5:30AM Feb 27, 2024Observed: 442.11 ft at 6:00AM Feb 27, 2024Observed: 441.99 ft at 6:30AM Feb 27, 2024Observed: 442.13 ft at 7:00AM Feb 27, 2024Observed: 442.07 ft at 7:30AM Feb 27, 2024Observed: 442.07 ft at 8:00AM Feb 27, 2024Observed: 442.33 ft at 8:30AM Feb 27, 2024Observed: 442.41 ft at 9:00AM Feb 27, 2024Observed: 442.45 ft at 9:30AM Feb 27, 2024Observed: 442.5 ft at 10:00AM Feb 27, 2024Observed: 442.52 ft at 10:30AM Feb 27, 2024Observed: 442.58 ft at 11:00AM Feb 27, 2024Observed: 442.53 ft at 11:30AM Feb 27, 2024Observed: 442.56 ft at 12:00PM Feb 27, 2024Observed: 442.6 ft at 12:30PM Feb 27, 2024Observed: 442.62 ft at 1:00PM Feb 27, 2024Observed: 442.61 ft at 1:30PM Feb 27, 2024Observed: 442.69 ft at 2:00PM Feb 27, 2024Observed: 442.61 ft at 2:30PM Feb 27, 2024Observed: 442.61 ft at 3:00PM Feb 27, 2024Observed: 442.69 ft at 3:30PM Feb 27, 2024Observed: 442.64 ft at 4:00PM Feb 27, 2024Observed: 442.7 ft at 4:30PM Feb 27, 2024Observed: 442.65 ft at 5:00PM Feb 27, 2024Observed: 442.68 ft at 5:30PM Feb 27, 2024Observed: 442.64 ft at 6:00PM Feb 27, 2024Observed: 442.67 ft at 6:30PM Feb 27, 2024Observed: 442.7 ft at 7:00PM Feb 27, 2024Observed: 442.68 ft at 7:30PM Feb 27, 2024Observed: 442.74 ft at 8:00PM Feb 27, 2024Observed: 442.84 ft at 8:30PM Feb 27, 2024Observed: 442.98 ft at 9:00PM Feb 27, 2024Observed: 443.15 ft at 9:30PM Feb 27, 2024Observed: 443.21 ft at 10:00PM Feb 27, 2024Observed: 443.26 ft at 10:30PM Feb 27, 2024Observed: 443.32 ft at 11:00PM Feb 27, 2024Observed: 443.35 ft at 11:30PM Feb 27, 2024Observed: 443.41 ft at 12:00AM Feb 28, 2024Observed: 443.43 ft at 12:30AM Feb 28, 2024Observed: 443.51 ft at 1:00AM Feb 28, 2024Observed: 443.56 ft at 1:30AM Feb 28, 2024Observed: 443.23 ft at 2:00AM Feb 28, 2024Observed: 443.16 ft at 2:30AM Feb 28, 2024Observed: 443.1 ft at 3:00AM Feb 28, 2024Observed: 443.12 ft at 3:30AM Feb 28, 2024Observed: 443.11 ft at 4:00AM Feb 28, 2024Observed: 443.08 ft at 4:30AM Feb 28, 2024Observed: 443.05 ft at 5:00AM Feb 28, 2024Observed: 443 ft at 5:30AM Feb 28, 2024Observed: 442.97 ft at 6:00AM Feb 28, 2024Observed: 442.91 ft at 6:30AM Feb 28, 2024Observed: 443.16 ft at 7:00AM Feb 28, 2024Observed: 443.24 ft at 7:30AM Feb 28, 2024Observed: 443.26 ft at 8:00AM Feb 28, 2024Observed: 443.39 ft at 8:30AM Feb 28, 2024Observed: 443.3 ft at 9:00AM Feb 28, 2024Observed: 443.35 ft at 9:30AM Feb 28, 2024Observed: 443.43 ft at 10:00AM Feb 28, 2024Observed: 443.38 ft at 10:30AM Feb 28, 2024Observed: 443.4 ft at 11:00AM Feb 28, 2024Observed: 443.41 ft at 11:30AM Feb 28, 2024Observed: 443.38 ft at 12:00PM Feb 28, 2024Observed: 443.42 ft at 12:30PM Feb 28, 2024Observed: 443.41 ft at 1:00PM Feb 28, 2024Observed: 443.39 ft at 1:30PM Feb 28, 2024Observed: 443.17 ft at 2:00PM Feb 28, 2024Observed: 443.13 ft at 2:30PM Feb 28, 2024Observed: 443.08 ft at 3:00PM Feb 28, 2024Observed: 442.98 ft at 3:30PM Feb 28, 2024Observed: 442.99 ft at 4:00PM Feb 28, 2024Observed: 442.9 ft at 4:30PM Feb 28, 2024Observed: 442.87 ft at 5:00PM Feb 28, 2024Observed: 442.79 ft at 5:30PM Feb 28, 2024Observed: 442.74 ft at 6:00PM Feb 28, 2024Observed: 442.7 ft at 6:30PM Feb 28, 2024Observed: 442.67 ft at 7:00PM Feb 28, 2024Observed: 442.63 ft at 7:30PM Feb 28, 2024Observed: 442.6 ft at 8:00PM Feb 28, 2024Observed: 442.59 ft at 8:30PM Feb 28, 2024Observed: 442.57 ft at 9:00PM Feb 28, 2024Observed: 442.56 ft at 9:30PM Feb 28, 2024Observed: 442.53 ft at 10:00PM Feb 28, 2024Observed: 442.54 ft at 10:30PM Feb 28, 2024Observed: 442.54 ft at 11:00PM Feb 28, 2024Observed: 442.55 ft at 11:30PM Feb 28, 2024Observed: 442.63 ft at 12:00AM Feb 29, 2024Observed: 442.54 ft at 12:30AM Feb 29, 2024Observed: 442.79 ft at 1:00AM Feb 29, 2024Observed: 442.56 ft at 1:30AM Feb 29, 2024Observed: 442.47 ft at 2:00AM Feb 29, 2024Observed: 442.41 ft at 2:30AM Feb 29, 2024Observed: 442.47 ft at 3:00AM Feb 29, 2024Observed: 442.47 ft at 3:30AM Feb 29, 2024Observed: 442.31 ft at 4:00AM Feb 29, 2024Observed: 442.67 ft at 4:30AM Feb 29, 2024Observed: 442.83 ft at 5:00AM Feb 29, 2024Observed: 442.8 ft at 5:30AM Feb 29, 2024Observed: 442.8 ft at 6:00AM Feb 29, 2024Observed: 442.85 ft at 6:30AM Feb 29, 2024Observed: 443.27 ft at 7:00AM Feb 29, 2024Observed: 443.53 ft at 7:30AM Feb 29, 2024Observed: 443.56 ft at 8:00AM Feb 29, 2024Observed: 443.66 ft at 8:30AM Feb 29, 2024Highest Observation: 443.71 ft at 9:00AM Feb 29, 2024Observed: 443.5 ft at 9:30AM Feb 29, 2024Observed: 443.37 ft at 10:00AM Feb 29, 2024Observed: 443.36 ft at 10:30AM Feb 29, 2024Observed: 443.33 ft at 11:00AM Feb 29, 2024Observed: 443.33 ft at 11:30AM Feb 29, 2024Observed: 443.38 ft at 12:00PM Feb 29, 2024Observed: 443.26 ft at 12:30PM Feb 29, 2024Observed: 443.3 ft at 1:00PM Feb 29, 2024Observed: 443.28 ft at 1:30PM Feb 29, 2024Observed: 443.2 ft at 2:00PM Feb 29, 2024Observed: 442.98 ft at 2:30PM Feb 29, 2024Observed: 442.94 ft at 3:00PM Feb 29, 2024Observed: 442.98 ft at 3:30PM Feb 29, 2024Observed: 442.89 ft at 4:00PM Feb 29, 2024Observed: 442.96 ft at 4:30PM Feb 29, 2024Observed: 442.78 ft at 5:00PM Feb 29, 2024Observed: 442.83 ft at 5:30PM Feb 29, 2024Observed: 442.75 ft at 6:00PM Feb 29, 2024Observed: 442.66 ft at 6:30PM Feb 29, 2024Observed: 442.72 ft at 7:00PM Feb 29, 2024Observed: 442.66 ft at 7:30PM Feb 29, 2024Observed: 442.61 ft at 8:00PM Feb 29, 2024Observed: 442.6 ft at 8:30PM Feb 29, 2024Observed: 442.58 ft at 9:00PM Feb 29, 2024Observed: 442.57 ft at 9:30PM Feb 29, 2024Observed: 442.55 ft at 10:00PM Feb 29, 2024Observed: 442.56 ft at 10:30PM Feb 29, 2024Observed: 442.55 ft at 11:00PM Feb 29, 2024Observed: 442.55 ft at 11:30PM Feb 29, 2024Observed: 442.54 ft at 12:00AM Mar 01, 2024Observed: 442.53 ft at 12:30AM Mar 01, 2024Observed: 442.51 ft at 1:00AM Mar 01, 2024Observed: 442.61 ft at 1:30AM Mar 01, 2024Observed: 442.63 ft at 2:00AM Mar 01, 2024Observed: 442.52 ft at 2:30AM Mar 01, 2024Observed: 442.55 ft at 3:00AM Mar 01, 2024Observed: 442.53 ft at 3:30AM Mar 01, 2024Observed: 442.42 ft at 4:00AM Mar 01, 2024Observed: 442.52 ft at 4:30AM Mar 01, 2024Observed: 442.67 ft at 5:00AM Mar 01, 2024Observed: 442.78 ft at 5:30AM Mar 01, 2024Observed: 442.81 ft at 6:00AM Mar 01, 2024Observed: 442.85 ft at 6:30AM Mar 01, 2024Observed: 442.89 ft at 7:00AM Mar 01, 2024Observed: 442.96 ft at 7:30AM Mar 01, 2024Observed: 442.94 ft at 8:00AM Mar 01, 2024Observed: 442.92 ft at 8:30AM Mar 01, 2024Observed: 442.84 ft at 9:00AM Mar 01, 2024Observed: 442.91 ft at 9:30AM Mar 01, 2024Observed: 442.91 ft at 10:00AM Mar 01, 2024Observed: 442.85 ft at 10:30AM Mar 01, 2024Observed: 442.85 ft at 11:00AM Mar 01, 2024Observed: 442.84 ft at 11:30AM Mar 01, 2024Observed: 442.83 ft at 12:00PM Mar 01, 2024Observed: 442.82 ft at 12:30PM Mar 01, 2024Observed: 442.83 ft at 1:00PM Mar 01, 2024Observed: 442.47 ft at 2:30PM Mar 01, 2024Observed: 442.38 ft at 3:00PM Mar 01, 2024Observed: 442.31 ft at 3:30PM Mar 01, 2024Observed: 442.48 ft at 4:00PM Mar 01, 2024Observed: 442.43 ft at 4:30PM Mar 01, 2024Observed: 442.45 ft at 5:00PM Mar 01, 2024Observed: 442.68 ft at 5:30PM Mar 01, 2024Observed: 442.81 ft at 6:00PM Mar 01, 2024Observed: 442.83 ft at 6:30PM Mar 01, 2024Observed: 442.84 ft at 7:00PM Mar 01, 2024Observed: 442.89 ft at 7:30PM Mar 01, 2024Observed: 442.94 ft at 8:00PM Mar 01, 2024Observed: 443 ft at 8:30PM Mar 01, 2024Observed: 443.27 ft at 9:00PM Mar 01, 2024Observed: 443.02 ft at 9:30PM Mar 01, 2024Observed: 443.05 ft at 10:00PM Mar 01, 2024Observed: 443.03 ft at 10:30PM Mar 01, 2024Observed: 442.98 ft at 11:00PM Mar 01, 2024Observed: 443.22 ft at 11:30PM Mar 01, 2024Observed: 443.08 ft at 12:00AM Mar 02, 2024Observed: 443.04 ft at 12:30AM Mar 02, 2024Observed: 443.14 ft at 1:00AM Mar 02, 2024Observed: 442.94 ft at 1:30AM Mar 02, 2024Observed: 442.92 ft at 2:00AM Mar 02, 2024Observed: 442.9 ft at 2:30AM Mar 02, 2024Observed: 442.65 ft at 3:00AM Mar 02, 2024Observed: 442.59 ft at 3:30AM Mar 02, 2024Observed: 442.52 ft at 4:00AM Mar 02, 2024Observed: 442.47 ft at 4:30AM Mar 02, 2024Observed: 442.41 ft at 5:00AM Mar 02, 2024Observed: 442.37 ft at 5:30AM Mar 02, 2024Observed: 442.32 ft at 6:00AM Mar 02, 2024Observed: 442.29 ft at 6:30AM Mar 02, 2024Observed: 442.27 ft at 7:00AM Mar 02, 2024Observed: 442.23 ft at 7:30AM Mar 02, 2024Observed: 442.24 ft at 8:00AM Mar 02, 2024Observed: 442.29 ft at 8:30AM Mar 02, 2024Observed: 442.26 ft at 9:00AM Mar 02, 2024Observed: 442.12 ft at 9:30AM Mar 02, 2024Observed: 442.26 ft at 10:00AM Mar 02, 2024Observed: 442.22 ft at 10:30AM Mar 02, 2024Observed: 442.21 ft at 11:00AM Mar 02, 2024Observed: 442.17 ft at 11:30AM Mar 02, 2024Observed: 442.2 ft at 12:00PM Mar 02, 2024Observed: 442.16 ft at 12:30PM Mar 02, 2024Observed: 442.17 ft at 1:00PM Mar 02, 2024Observed: 442.12 ft at 2:30PM Mar 02, 2024Observed: 442.11 ft at 3:00PM Mar 02, 2024Observed: 442.11 ft at 3:30PM Mar 02, 2024Observed: 442.37 ft at 4:00PM Mar 02, 2024Observed: 442.51 ft at 4:30PM Mar 02, 2024Observed: 442.56 ft at 5:00PM Mar 02, 2024Observed: 442.58 ft at 5:30PM Mar 02, 2024Observed: 442.49 ft at 6:00PM Mar 02, 2024Observed: 442.6 ft at 6:30PM Mar 02, 2024Observed: 442.6 ft at 7:00PM Mar 02, 2024Observed: 442.66 ft at 7:30PM Mar 02, 2024Observed: 442.77 ft at 8:00PM Mar 02, 2024Observed: 442.9 ft at 8:30PM Mar 02, 2024Observed: 442.97 ft at 9:00PM Mar 02, 2024Observed: 443.02 ft at 9:30PM Mar 02, 2024Observed: 443.04 ft at 10:00PM Mar 02, 2024Observed: 443.25 ft at 10:30PM Mar 02, 2024Observed: 443.15 ft at 11:00PM Mar 02, 2024Highest Forecast: 442.3 ft 12:00AM Mar 03, 2024Forecast: 442.2 ft 6:00AM Mar 03, 2024Forecast: 442.2 ft 12:00PM Mar 03, 2024Forecast: 442.2 ft 6:00PM Mar 03, 2024Forecast: 442.2 ft 12:00AM Mar 04, 2024Forecast: 442.1 ft 6:00AM Mar 04, 2024Forecast: 442.1 ft 12:00PM Mar 04, 2024Forecast: 442.1 ft 6:00PM Mar 04, 2024Forecast: 442.1 ft 12:00AM Mar 05, 2024Forecast: 442.1 ft 6:00AM Mar 05, 2024Forecast: 442 ft 12:00PM Mar 05, 2024Forecast: 442 ft 6:00PM Mar 05, 2024Forecast: 442 ft 12:00AM Mar 06, 2024Forecast: 442 ft 6:00AM Mar 06, 2024Forecast: 442 ft 12:00PM Mar 06, 2024Forecast: 441.9 ft 6:00PM Mar 06, 2024Forecast: 441.9 ft 12:00AM Mar 07, 2024Forecast: 441.9 ft 6:00AM Mar 07, 2024Forecast: 441.9 ft 12:00PM Mar 07, 2024Forecast: 441.9 ft 6:00PM Mar 07, 2024Forecast: 441.9 ft 12:00AM Mar 08, 2024Forecast: 441.9 ft 6:00AM Mar 08, 2024Forecast: 441.8 ft 12:00PM Mar 08, 2024Forecast: 441.8 ft 6:00PM Mar 08, 2024Forecast: 441.8 ft 12:00AM Mar 09, 2024Forecast: 441.8 ft 6:00AM Mar 09, 2024USACESRDI2(plotting HTIRG) Graph Created (11:40PM Mar 2, 2024)ObservedForecast (issued 9:30AM Mar 2)Latest observed value: 443.15 ft at 11:00 PM CST 2-Mar-2024. Flood Stage is 450 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CST)
XML Data
RSS Files
Datum: NAVD88
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.

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Upstream Gauge - at Ottawa Upstream Gauge Downstream Gauge Downstream Gauge - near La Salle
Flood Categories (in feet)
Major Flood Stage: 465
Moderate Flood Stage: 460
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) 465.86 ft on 05/19/2020
(4) 464.70 ft on 12/05/1982
(5) 464.61 ft on 05/03/2019
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 465.86 ft on 05/19/2020
(2) 464.61 ft on 05/03/2019
(3) 463.65 ft on 02/22/2018
(4) 460.14 ft on 05/02/2017
(5) 461.82 ft on 12/30/2015
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 439.90 ft on 10/03/2012
(2) 440.34 ft on 10/01/2017
(3) 440.38 ft on 10/16/2015
(4) 440.78 ft on 09/28/2020

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.
461.5 High water causes the Starved Rock Lock to shut down.
459 Dee Bennet Road is threatened between Ottawa and Utica.
458 High water levels begin to impact shipping interests along the river.
455 High water causes the Starved Rock Hydroelectric Power Station to shut down.
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: 41.325062° N, Longitude: 88.987417° 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 -0.19 449.81 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?
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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.
NWS Information
National Weather Service
Chicago Weather Forecast Office
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Romeoville, IL 60446
(815) 834-1435
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Page last modified: 2-Nov-2020 7:29 PM
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