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Hydrograph River at a Glance Download
Illinois River at Starved Rock Lock (tailwater) Tailwater (ft)Flow (kcfs)Observed: 441.73 ft at 8:00AM Jun 18, 2021Observed: 442.01 ft at 8:30AM Jun 18, 2021Observed: 441.69 ft at 9:00AM Jun 18, 2021Observed: 441.79 ft at 9:30AM Jun 18, 2021Observed: 441.59 ft at 10:00AM Jun 18, 2021Observed: 441.66 ft at 10:30AM Jun 18, 2021Observed: 441.75 ft at 11:00AM Jun 18, 2021Observed: 441.73 ft at 11:30AM Jun 18, 2021Observed: 441.63 ft at 12:00PM Jun 18, 2021Observed: 441.85 ft at 12:30PM Jun 18, 2021Observed: 441.81 ft at 1:00PM Jun 18, 2021Observed: 441.93 ft at 1:30PM Jun 18, 2021Observed: 441.77 ft at 2:00PM Jun 18, 2021Observed: 441.73 ft at 2:30PM Jun 18, 2021Observed: 441.66 ft at 3:00PM Jun 18, 2021Observed: 441.49 ft at 3:30PM Jun 18, 2021Observed: 441.58 ft at 4:00PM Jun 18, 2021Observed: 441.52 ft at 4:30PM Jun 18, 2021Observed: 441.55 ft at 5:00PM Jun 18, 2021Observed: 441.53 ft at 5:30PM Jun 18, 2021Observed: 441.5 ft at 6:00PM Jun 18, 2021Observed: 441.34 ft at 6:30PM Jun 18, 2021Observed: 441.37 ft at 7:00PM Jun 18, 2021Observed: 441.41 ft at 7:30PM Jun 18, 2021Observed: 441.51 ft at 8:00PM Jun 18, 2021Observed: 441.4 ft at 8:30PM Jun 18, 2021Observed: 441.36 ft at 9:00PM Jun 18, 2021Observed: 441.29 ft at 9:30PM Jun 18, 2021Observed: 441.38 ft at 10:00PM Jun 18, 2021Observed: 441.33 ft at 10:30PM Jun 18, 2021Observed: 441.32 ft at 11:00PM Jun 18, 2021Observed: 441.33 ft at 11:30PM Jun 18, 2021Observed: 441.44 ft at 12:00AM Jun 19, 2021Observed: 441.42 ft at 12:30AM Jun 19, 2021Observed: 441.36 ft at 1:00AM Jun 19, 2021Observed: 441.22 ft at 1:30AM Jun 19, 2021Observed: 441.28 ft at 2:00AM Jun 19, 2021Observed: 441.27 ft at 2:30AM Jun 19, 2021Observed: 441.39 ft at 3:00AM Jun 19, 2021Observed: 441.2 ft at 3:30AM Jun 19, 2021Observed: 441.36 ft at 4:00AM Jun 19, 2021Observed: 441.23 ft at 4:30AM Jun 19, 2021Observed: 441.25 ft at 5:00AM Jun 19, 2021Observed: 441.48 ft at 5:30AM Jun 19, 2021Observed: 441.53 ft at 6:00AM Jun 19, 2021Observed: 441.53 ft at 6:30AM Jun 19, 2021Observed: 441.6 ft at 7:00AM Jun 19, 2021Observed: 441.6 ft at 7:30AM Jun 19, 2021Observed: 441.65 ft at 8:00AM Jun 19, 2021Observed: 441.69 ft at 8:30AM Jun 19, 2021Observed: 441.72 ft at 9:00AM Jun 19, 2021Observed: 441.75 ft at 9:30AM Jun 19, 2021Observed: 441.82 ft at 10:00AM Jun 19, 2021Observed: 441.72 ft at 10:30AM Jun 19, 2021Observed: 441.72 ft at 11:00AM Jun 19, 2021Observed: 441.68 ft at 11:30AM Jun 19, 2021Observed: 441.61 ft at 12:00PM Jun 19, 2021Observed: 441.59 ft at 12:30PM Jun 19, 2021Observed: 441.53 ft at 1:00PM Jun 19, 2021Observed: 441.51 ft at 1:30PM Jun 19, 2021Observed: 441.45 ft at 2:00PM Jun 19, 2021Observed: 441.42 ft at 2:30PM Jun 19, 2021Observed: 441.46 ft at 3:00PM Jun 19, 2021Observed: 441.43 ft at 3:30PM Jun 19, 2021Observed: 441.42 ft at 4:00PM Jun 19, 2021Observed: 441.36 ft at 4:30PM Jun 19, 2021Observed: 441.34 ft at 5:00PM Jun 19, 2021Observed: 441.39 ft at 5:30PM Jun 19, 2021Observed: 441.36 ft at 6:00PM Jun 19, 2021Observed: 441.36 ft at 6:30PM Jun 19, 2021Observed: 441.32 ft at 7:00PM Jun 19, 2021Observed: 441.33 ft at 7:30PM Jun 19, 2021Observed: 441.41 ft at 8:00PM Jun 19, 2021Observed: 441.35 ft at 8:30PM Jun 19, 2021Observed: 441.29 ft at 9:00PM Jun 19, 2021Observed: 441.41 ft at 9:30PM Jun 19, 2021Observed: 441.29 ft at 10:00PM Jun 19, 2021Observed: 441.3 ft at 10:30PM Jun 19, 2021Observed: 441.29 ft at 11:00PM Jun 19, 2021Observed: 441.37 ft at 11:30PM Jun 19, 2021Observed: 441.21 ft at 12:00AM Jun 20, 2021Observed: 441.3 ft at 12:30AM Jun 20, 2021Observed: 441.41 ft at 1:00AM Jun 20, 2021Observed: 441.48 ft at 1:30AM Jun 20, 2021Observed: 441.47 ft at 2:00AM Jun 20, 2021Observed: 441.85 ft at 2:30AM Jun 20, 2021Observed: 441.66 ft at 3:00AM Jun 20, 2021Observed: 441.75 ft at 3:30AM Jun 20, 2021Observed: 441.79 ft at 4:00AM Jun 20, 2021Observed: 441.71 ft at 4:30AM Jun 20, 2021Observed: 441.68 ft at 5:00AM Jun 20, 2021Observed: 441.72 ft at 5:30AM Jun 20, 2021Observed: 441.73 ft at 6:00AM Jun 20, 2021Observed: 441.81 ft at 6:30AM Jun 20, 2021Observed: 441.78 ft at 7:00AM Jun 20, 2021Observed: 441.78 ft at 7:30AM Jun 20, 2021Observed: 441.73 ft at 8:00AM Jun 20, 2021Observed: 441.73 ft at 8:30AM Jun 20, 2021Observed: 441.71 ft at 9:00AM Jun 20, 2021Observed: 441.72 ft at 9:30AM Jun 20, 2021Observed: 441.73 ft at 10:00AM Jun 20, 2021Observed: 441.73 ft at 10:30AM Jun 20, 2021Observed: 441.72 ft at 11:00AM Jun 20, 2021Observed: 441.75 ft at 11:30AM Jun 20, 2021Observed: 441.77 ft at 12:00PM Jun 20, 2021Observed: 441.77 ft at 12:30PM Jun 20, 2021Observed: 441.64 ft at 1:00PM Jun 20, 2021Observed: 441.72 ft at 1:30PM Jun 20, 2021Observed: 441.69 ft at 2:00PM Jun 20, 2021Observed: 441.78 ft at 2:30PM Jun 20, 2021Observed: 441.84 ft at 3:00PM Jun 20, 2021Observed: 441.82 ft at 3:30PM Jun 20, 2021Observed: 441.95 ft at 4:00PM Jun 20, 2021Observed: 441.77 ft at 4:30PM Jun 20, 2021Observed: 441.78 ft at 5:00PM Jun 20, 2021Observed: 441.76 ft at 5:30PM Jun 20, 2021Observed: 441.76 ft at 6:00PM Jun 20, 2021Observed: 441.8 ft at 6:30PM Jun 20, 2021Observed: 441.8 ft at 7:00PM Jun 20, 2021Observed: 441.81 ft at 7:30PM Jun 20, 2021Observed: 441.8 ft at 8:00PM Jun 20, 2021Observed: 441.78 ft at 8:30PM Jun 20, 2021Observed: 441.79 ft at 9:00PM Jun 20, 2021Observed: 441.79 ft at 9:30PM Jun 20, 2021Observed: 441.75 ft at 10:00PM Jun 20, 2021Observed: 441.74 ft at 10:30PM Jun 20, 2021Observed: 441.73 ft at 11:00PM Jun 20, 2021Observed: 441.65 ft at 11:30PM Jun 20, 2021Observed: 441.87 ft at 12:00AM Jun 21, 2021Observed: 441.9 ft at 12:30AM Jun 21, 2021Observed: 441.9 ft at 1:00AM Jun 21, 2021Observed: 441.87 ft at 1:30AM Jun 21, 2021Observed: 441.9 ft at 2:00AM Jun 21, 2021Observed: 442.12 ft at 9:30AM Jun 21, 2021Observed: 442.07 ft at 10:00AM Jun 21, 2021Observed: 442.08 ft at 10:30AM Jun 21, 2021Observed: 442.09 ft at 11:00AM Jun 21, 2021Observed: 442.08 ft at 11:30AM Jun 21, 2021Observed: 442.08 ft at 12:00PM Jun 21, 2021Observed: 442.1 ft at 12:30PM Jun 21, 2021Observed: 442.13 ft at 1:00PM Jun 21, 2021Observed: 442.13 ft at 1:30PM Jun 21, 2021Observed: 442.05 ft at 2:00PM Jun 21, 2021Observed: 442.12 ft at 2:30PM Jun 21, 2021Observed: 442.38 ft at 3:00PM Jun 21, 2021Observed: 442.46 ft at 3:30PM Jun 21, 2021Observed: 442.44 ft at 4:00PM Jun 21, 2021Observed: 442.45 ft at 4:30PM Jun 21, 2021Observed: 442.5 ft at 5:00PM Jun 21, 2021Observed: 442.52 ft at 5:30PM Jun 21, 2021Observed: 442.51 ft at 6:00PM Jun 21, 2021Observed: 442.54 ft at 6:30PM Jun 21, 2021Observed: 442.5 ft at 7:00PM Jun 21, 2021Observed: 442.58 ft at 7:30PM Jun 21, 2021Observed: 442.55 ft at 8:00PM Jun 21, 2021Observed: 442.55 ft at 8:30PM Jun 21, 2021Observed: 442.55 ft at 9:00PM Jun 21, 2021Observed: 442.56 ft at 9:30PM Jun 21, 2021Observed: 442.56 ft at 10:00PM Jun 21, 2021Observed: 442.57 ft at 10:30PM Jun 21, 2021Observed: 442.59 ft at 11:00PM Jun 21, 2021Observed: 442.58 ft at 11:30PM Jun 21, 2021Observed: 442.57 ft at 12:00AM Jun 22, 2021Observed: 442.32 ft at 12:30AM Jun 22, 2021Observed: 442.18 ft at 1:00AM Jun 22, 2021Observed: 442.11 ft at 1:30AM Jun 22, 2021Observed: 442.04 ft at 2:00AM Jun 22, 2021Observed: 442 ft at 2:30AM Jun 22, 2021Observed: 441.96 ft at 3:00AM Jun 22, 2021Observed: 441.93 ft at 3:30AM Jun 22, 2021Observed: 441.9 ft at 4:00AM Jun 22, 2021Observed: 441.87 ft at 4:30AM Jun 22, 2021Observed: 441.86 ft at 5:00AM Jun 22, 2021Observed: 441.84 ft at 5:30AM Jun 22, 2021Observed: 441.83 ft at 6:00AM Jun 22, 2021Observed: 441.82 ft at 6:30AM Jun 22, 2021Observed: 441.82 ft at 7:00AM Jun 22, 2021Observed: 441.81 ft at 7:30AM Jun 22, 2021Observed: 441.81 ft at 8:00AM Jun 22, 2021Observed: 441.91 ft at 8:30AM Jun 22, 2021Observed: 441.8 ft at 9:00AM Jun 22, 2021Observed: 441.94 ft at 9:30AM Jun 22, 2021Observed: 441.94 ft at 10:00AM Jun 22, 2021Observed: 441.97 ft at 10:30AM Jun 22, 2021Observed: 441.97 ft at 11:00AM Jun 22, 2021Observed: 441.98 ft at 11:30AM Jun 22, 2021Observed: 441.95 ft at 12:00PM Jun 22, 2021Observed: 442.32 ft at 12:30PM Jun 22, 2021Observed: 442.35 ft at 1:00PM Jun 22, 2021Observed: 442.42 ft at 1:30PM Jun 22, 2021Observed: 442.48 ft at 2:00PM Jun 22, 2021Observed: 442.5 ft at 2:30PM Jun 22, 2021Observed: 442.55 ft at 3:00PM Jun 22, 2021Observed: 442.58 ft at 3:30PM Jun 22, 2021Observed: 442.58 ft at 4:00PM Jun 22, 2021Observed: 442.72 ft at 4:30PM Jun 22, 2021Observed: 442.98 ft at 5:00PM Jun 22, 2021Observed: 443.11 ft at 5:30PM Jun 22, 2021Observed: 443.14 ft at 6:00PM Jun 22, 2021Observed: 443.18 ft at 6:30PM Jun 22, 2021Observed: 443.18 ft at 7:00PM Jun 22, 2021Observed: 443.19 ft at 7:30PM Jun 22, 2021Observed: 443.26 ft at 8:00PM Jun 22, 2021Observed: 443.32 ft at 8:30PM Jun 22, 2021Observed: 443.31 ft at 9:00PM Jun 22, 2021Observed: 443.29 ft at 9:30PM Jun 22, 2021Observed: 443.48 ft at 10:00PM Jun 22, 2021Observed: 443.4 ft at 10:30PM Jun 22, 2021Observed: 443.18 ft at 11:00PM Jun 22, 2021Observed: 443.22 ft at 11:30PM Jun 22, 2021Observed: 443.01 ft at 12:00AM Jun 23, 2021Observed: 443.11 ft at 12:30AM Jun 23, 2021Observed: 443.08 ft at 1:00AM Jun 23, 2021Observed: 443.06 ft at 1:30AM Jun 23, 2021Observed: 443.03 ft at 2:00AM Jun 23, 2021Observed: 443.01 ft at 2:30AM Jun 23, 2021Observed: 443.01 ft at 3:00AM Jun 23, 2021Observed: 442.85 ft at 3:30AM Jun 23, 2021Observed: 442.68 ft at 4:00AM Jun 23, 2021Observed: 442.64 ft at 4:30AM Jun 23, 2021Observed: 442.57 ft at 5:00AM Jun 23, 2021Observed: 442.57 ft at 5:30AM Jun 23, 2021Observed: 442.53 ft at 6:00AM Jun 23, 2021Observed: 442.49 ft at 6:30AM Jun 23, 2021Observed: 442.49 ft at 7:00AM Jun 23, 2021Observed: 442.45 ft at 7:30AM Jun 23, 2021Observed: 442.44 ft at 8:00AM Jun 23, 2021Observed: 442.41 ft at 8:30AM Jun 23, 2021Observed: 442.41 ft at 9:00AM Jun 23, 2021Observed: 442.79 ft at 9:30AM Jun 23, 2021Observed: 442.92 ft at 10:00AM Jun 23, 2021Observed: 442.99 ft at 10:30AM Jun 23, 2021Observed: 443.01 ft at 11:00AM Jun 23, 2021Observed: 443.09 ft at 11:30AM Jun 23, 2021Observed: 443.48 ft at 12:00PM Jun 23, 2021Observed: 443.15 ft at 12:30PM Jun 23, 2021Observed: 443.2 ft at 1:00PM Jun 23, 2021Observed: 443.22 ft at 1:30PM Jun 23, 2021Observed: 443.18 ft at 2:00PM Jun 23, 2021Observed: 443.26 ft at 2:30PM Jun 23, 2021Observed: 442.97 ft at 3:00PM Jun 23, 2021Observed: 442.94 ft at 3:30PM Jun 23, 2021Observed: 442.92 ft at 4:00PM Jun 23, 2021Observed: 442.81 ft at 4:30PM Jun 23, 2021Observed: 442.71 ft at 5:00PM Jun 23, 2021Observed: 442.68 ft at 5:30PM Jun 23, 2021Observed: 442.69 ft at 6:00PM Jun 23, 2021Observed: 442.65 ft at 6:30PM Jun 23, 2021Observed: 442.6 ft at 7:00PM Jun 23, 2021Observed: 442.57 ft at 7:30PM Jun 23, 2021Observed: 442.57 ft at 8:00PM Jun 23, 2021Observed: 442.57 ft at 8:30PM Jun 23, 2021Observed: 442.55 ft at 9:00PM Jun 23, 2021Observed: 442.56 ft at 9:30PM Jun 23, 2021Observed: 442.55 ft at 10:00PM Jun 23, 2021Observed: 442.55 ft at 10:30PM Jun 23, 2021Observed: 442.76 ft at 11:00PM Jun 23, 2021Observed: 442.97 ft at 11:30PM Jun 23, 2021Observed: 443.05 ft at 12:00AM Jun 24, 2021Observed: 443.12 ft at 12:30AM Jun 24, 2021Observed: 443.16 ft at 1:00AM Jun 24, 2021Observed: 443.21 ft at 1:30AM Jun 24, 2021Observed: 442.85 ft at 2:00AM Jun 24, 2021Observed: 442.79 ft at 2:30AM Jun 24, 2021Observed: 442.74 ft at 3:00AM Jun 24, 2021Observed: 442.69 ft at 3:30AM Jun 24, 2021Observed: 442.66 ft at 4:00AM Jun 24, 2021Observed: 442.62 ft at 4:30AM Jun 24, 2021Observed: 442.58 ft at 5:00AM Jun 24, 2021Observed: 442.59 ft at 5:30AM Jun 24, 2021Observed: 442.56 ft at 6:00AM Jun 24, 2021Observed: 442.54 ft at 6:30AM Jun 24, 2021Observed: 442.54 ft at 7:00AM Jun 24, 2021Observed: 442.63 ft at 7:30AM Jun 24, 2021Observed: 442.75 ft at 8:00AM Jun 24, 2021Observed: 442.57 ft at 8:30AM Jun 24, 2021Observed: 442.54 ft at 9:00AM Jun 24, 2021Observed: 442.59 ft at 9:30AM Jun 24, 2021Observed: 442.54 ft at 10:00AM Jun 24, 2021Observed: 442.38 ft at 10:30AM Jun 24, 2021Observed: 442.48 ft at 11:00AM Jun 24, 2021Observed: 442.37 ft at 11:30AM Jun 24, 2021Observed: 442.41 ft at 12:00PM Jun 24, 2021Observed: 442.37 ft at 12:30PM Jun 24, 2021Observed: 442.4 ft at 1:00PM Jun 24, 2021Observed: 442.39 ft at 1:30PM Jun 24, 2021Observed: 442.35 ft at 2:00PM Jun 24, 2021Observed: 442.45 ft at 2:30PM Jun 24, 2021Observed: 442.33 ft at 3:00PM Jun 24, 2021Observed: 442.37 ft at 3:30PM Jun 24, 2021Observed: 442.96 ft at 4:00PM Jun 24, 2021Observed: 442.26 ft at 4:30PM Jun 24, 2021Observed: 442.28 ft at 5:00PM Jun 24, 2021Observed: 442.64 ft at 5:30PM Jun 24, 2021Observed: 442.32 ft at 6:00PM Jun 24, 2021Observed: 442.28 ft at 6:30PM Jun 24, 2021Observed: 442.39 ft at 7:00PM Jun 24, 2021Observed: 442.7 ft at 7:30PM Jun 24, 2021Observed: 442.35 ft at 8:00PM Jun 24, 2021Observed: 442.33 ft at 8:30PM Jun 24, 2021Observed: 442.33 ft at 9:00PM Jun 24, 2021Observed: 442.34 ft at 9:30PM Jun 24, 2021Observed: 442.37 ft at 10:00PM Jun 24, 2021Observed: 442.36 ft at 10:30PM Jun 24, 2021Observed: 442.37 ft at 11:00PM Jun 24, 2021Observed: 442.36 ft at 11:30PM Jun 24, 2021Observed: 442.28 ft at 12:00AM Jun 25, 2021Observed: 442.4 ft at 12:30AM Jun 25, 2021Observed: 442.98 ft at 1:00AM Jun 25, 2021Observed: 443.26 ft at 2:00AM Jun 25, 2021Observed: 443.32 ft at 2:30AM Jun 25, 2021Observed: 443.48 ft at 3:00AM Jun 25, 2021Observed: 443.64 ft at 3:30AM Jun 25, 2021Observed: 443.73 ft at 4:00AM Jun 25, 2021Observed: 443.78 ft at 4:30AM Jun 25, 2021Observed: 443.8 ft at 5:00AM Jun 25, 2021Observed: 443.85 ft at 5:30AM Jun 25, 2021Observed: 443.95 ft at 6:00AM Jun 25, 2021Observed: 443.93 ft at 6:30AM Jun 25, 2021Highest Observation: 444.02 ft at 7:00AM Jun 25, 2021Forecast: 443.9 ft 1:00PM Jun 25, 2021Forecast: 445.5 ft 7:00PM Jun 25, 2021Forecast: 446.9 ft 1:00AM Jun 26, 2021Forecast: 448.6 ft 7:00AM Jun 26, 2021Forecast: 449.7 ft 1:00PM Jun 26, 2021Forecast: 450.3 ft 7:00PM Jun 26, 2021Forecast: 450.7 ft 1:00AM Jun 27, 2021Highest Forecast: 450.9 ft 7:00AM Jun 27, 2021Highest Forecast: 450.9 ft 1:00PM Jun 27, 2021Forecast: 450.7 ft 7:00PM Jun 27, 2021Forecast: 450.2 ft 1:00AM Jun 28, 2021Forecast: 449.7 ft 7:00AM Jun 28, 2021Forecast: 449.1 ft 1:00PM Jun 28, 2021Forecast: 448.6 ft 7:00PM Jun 28, 2021Forecast: 448.1 ft 1:00AM Jun 29, 2021Forecast: 447.7 ft 7:00AM Jun 29, 2021Forecast: 447.4 ft 1:00PM Jun 29, 2021Forecast: 447.1 ft 7:00PM Jun 29, 2021Forecast: 446.9 ft 1:00AM Jun 30, 2021Forecast: 446.7 ft 7:00AM Jun 30, 2021Forecast: 446.3 ft 1:00PM Jun 30, 2021Forecast: 446.1 ft 7:00PM Jun 30, 2021Forecast: 446 ft 1:00AM Jul 01, 2021Forecast: 445.8 ft 7:00AM Jul 01, 2021Forecast: 445.7 ft 1:00PM Jul 01, 2021Forecast: 445.5 ft 7:00PM Jul 01, 2021USACESRDI2(plotting HTIRG) Graph Created (7:40AM Jun 25, 2021)ObservedForecast (issued 9:02PM Jun 24)Latest observed value: 444.02 ft at 7:00 AM CDT 25-Jun-2021. Flood Stage is 450 ft
Printable Image
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 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: 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: 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?
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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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