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Hydrograph River at a Glance Download
Illinois River at Starved Rock lock/dam Tailwater (ft)Flow (kcfs)Observed: 447.82 ft at 12:00AM Apr 20, 2018Observed: 447.92 ft at 12:30AM Apr 20, 2018Observed: 447.99 ft at 1:00AM Apr 20, 2018Observed: 447.82 ft at 1:30AM Apr 20, 2018Observed: 447.81 ft at 2:00AM Apr 20, 2018Observed: 447.86 ft at 2:30AM Apr 20, 2018Observed: 447.87 ft at 3:00AM Apr 20, 2018Observed: 447.83 ft at 3:30AM Apr 20, 2018Observed: 447.86 ft at 4:00AM Apr 20, 2018Observed: 447.87 ft at 4:30AM Apr 20, 2018Observed: 447.88 ft at 5:00AM Apr 20, 2018Observed: 447.86 ft at 5:30AM Apr 20, 2018Observed: 447.82 ft at 6:00AM Apr 20, 2018Observed: 447.82 ft at 6:30AM Apr 20, 2018Observed: 447.82 ft at 7:00AM Apr 20, 2018Observed: 447.86 ft at 7:30AM Apr 20, 2018Observed: 447.85 ft at 8:00AM Apr 20, 2018Observed: 447.83 ft at 8:30AM Apr 20, 2018Observed: 447.84 ft at 9:00AM Apr 20, 2018Observed: 447.92 ft at 9:30AM Apr 20, 2018Observed: 447.94 ft at 10:00AM Apr 20, 2018Observed: 447.99 ft at 10:30AM Apr 20, 2018Observed: 447.99 ft at 11:00AM Apr 20, 2018Observed: 447.97 ft at 11:30AM Apr 20, 2018Highest Observation: 448.02 ft at 12:00PM Apr 20, 2018Observed: 448.01 ft at 12:30PM Apr 20, 2018Observed: 447.75 ft at 1:00PM Apr 20, 2018Observed: 447.82 ft at 1:30PM Apr 20, 2018Observed: 447.63 ft at 2:00PM Apr 20, 2018Observed: 447.67 ft at 2:30PM Apr 20, 2018Observed: 447.65 ft at 3:00PM Apr 20, 2018Observed: 447.54 ft at 3:30PM Apr 20, 2018Observed: 447.48 ft at 4:00PM Apr 20, 2018Observed: 447.47 ft at 4:30PM Apr 20, 2018Observed: 447.42 ft at 5:00PM Apr 20, 2018Observed: 447.33 ft at 5:30PM Apr 20, 2018Observed: 447.45 ft at 6:00PM Apr 20, 2018Observed: 447.38 ft at 6:30PM Apr 20, 2018Observed: 447.44 ft at 7:00PM Apr 20, 2018Observed: 447.27 ft at 7:30PM Apr 20, 2018Observed: 447.43 ft at 8:00PM Apr 20, 2018Observed: 447.36 ft at 8:30PM Apr 20, 2018Observed: 447.34 ft at 9:00PM Apr 20, 2018Observed: 447.39 ft at 9:30PM Apr 20, 2018Observed: 447.3 ft at 10:00PM Apr 20, 2018Observed: 447.38 ft at 10:30PM Apr 20, 2018Observed: 447.35 ft at 11:00PM Apr 20, 2018Observed: 447.28 ft at 11:30PM Apr 20, 2018Observed: 447.28 ft at 12:00AM Apr 21, 2018Observed: 447.13 ft at 12:30AM Apr 21, 2018Observed: 447.09 ft at 1:00AM Apr 21, 2018Observed: 447.1 ft at 1:30AM Apr 21, 2018Observed: 447 ft at 2:00AM Apr 21, 2018Observed: 447.06 ft at 2:30AM Apr 21, 2018Observed: 447.02 ft at 3:00AM Apr 21, 2018Observed: 447.03 ft at 3:30AM Apr 21, 2018Observed: 447.04 ft at 4:00AM Apr 21, 2018Observed: 446.98 ft at 4:30AM Apr 21, 2018Observed: 446.99 ft at 5:00AM Apr 21, 2018Observed: 446.97 ft at 5:30AM Apr 21, 2018Observed: 446.95 ft at 6:00AM Apr 21, 2018Observed: 447.21 ft at 6:30AM Apr 21, 2018Observed: 447.27 ft at 7:00AM Apr 21, 2018Observed: 447.26 ft at 7:30AM Apr 21, 2018Observed: 447.32 ft at 8:00AM Apr 21, 2018Observed: 447.28 ft at 8:30AM Apr 21, 2018Observed: 447.29 ft at 9:00AM Apr 21, 2018Observed: 447.4 ft at 9:30AM Apr 21, 2018Observed: 447.36 ft at 10:00AM Apr 21, 2018Observed: 447.41 ft at 10:30AM Apr 21, 2018Observed: 447.34 ft at 11:00AM Apr 21, 2018Observed: 447.2 ft at 11:30AM Apr 21, 2018Observed: 447.12 ft at 12:00PM Apr 21, 2018Observed: 447.08 ft at 12:30PM Apr 21, 2018Observed: 447.07 ft at 1:00PM Apr 21, 2018Observed: 446.97 ft at 1:30PM Apr 21, 2018Observed: 446.82 ft at 2:00PM Apr 21, 2018Observed: 446.76 ft at 2:30PM Apr 21, 2018Observed: 446.71 ft at 3:00PM Apr 21, 2018Observed: 446.7 ft at 3:30PM Apr 21, 2018Observed: 446.66 ft at 4:00PM Apr 21, 2018Observed: 446.63 ft at 4:30PM Apr 21, 2018Observed: 446.59 ft at 5:00PM Apr 21, 2018Observed: 446.83 ft at 5:30PM Apr 21, 2018Observed: 446.62 ft at 6:00PM Apr 21, 2018Observed: 446.5 ft at 6:30PM Apr 21, 2018Observed: 446.45 ft at 7:00PM Apr 21, 2018Observed: 446.58 ft at 7:30PM Apr 21, 2018Observed: 446.64 ft at 8:00PM Apr 21, 2018Observed: 446.46 ft at 8:30PM Apr 21, 2018Observed: 446.63 ft at 9:00PM Apr 21, 2018Observed: 446.67 ft at 9:30PM Apr 21, 2018Observed: 446.65 ft at 10:00PM Apr 21, 2018Observed: 446.68 ft at 10:30PM Apr 21, 2018Observed: 446.67 ft at 11:00PM Apr 21, 2018Observed: 446.64 ft at 11:30PM Apr 21, 2018Observed: 446.65 ft at 12:00AM Apr 22, 2018Observed: 446.67 ft at 12:30AM Apr 22, 2018Observed: 446.65 ft at 1:00AM Apr 22, 2018Observed: 446.64 ft at 1:30AM Apr 22, 2018Observed: 446.72 ft at 2:00AM Apr 22, 2018Observed: 446.7 ft at 2:30AM Apr 22, 2018Observed: 446.78 ft at 3:00AM Apr 22, 2018Observed: 446.76 ft at 3:30AM Apr 22, 2018Observed: 446.79 ft at 4:00AM Apr 22, 2018Observed: 446.81 ft at 4:30AM Apr 22, 2018Observed: 446.78 ft at 5:00AM Apr 22, 2018Observed: 446.78 ft at 5:30AM Apr 22, 2018Observed: 446.84 ft at 6:00AM Apr 22, 2018Observed: 446.78 ft at 6:30AM Apr 22, 2018Observed: 446.81 ft at 7:00AM Apr 22, 2018Observed: 446.92 ft at 7:30AM Apr 22, 2018Observed: 446.8 ft at 8:00AM Apr 22, 2018Observed: 446.83 ft at 8:30AM Apr 22, 2018Observed: 446.93 ft at 9:00AM Apr 22, 2018Observed: 446.81 ft at 9:30AM Apr 22, 2018Observed: 446.93 ft at 10:00AM Apr 22, 2018Observed: 446.75 ft at 10:30AM Apr 22, 2018Observed: 446.77 ft at 11:00AM Apr 22, 2018Observed: 446.71 ft at 11:30AM Apr 22, 2018Observed: 446.79 ft at 12:00PM Apr 22, 2018Observed: 446.75 ft at 12:30PM Apr 22, 2018Observed: 446.73 ft at 1:00PM Apr 22, 2018Observed: 446.79 ft at 1:30PM Apr 22, 2018Observed: 446.75 ft at 2:00PM Apr 22, 2018Observed: 446.82 ft at 2:30PM Apr 22, 2018Observed: 446.42 ft at 3:00PM Apr 22, 2018Observed: 446.34 ft at 3:30PM Apr 22, 2018Observed: 446.29 ft at 4:00PM Apr 22, 2018Observed: 446.36 ft at 4:30PM Apr 22, 2018Observed: 446.22 ft at 5:00PM Apr 22, 2018Observed: 446.17 ft at 5:30PM Apr 22, 2018Observed: 446.08 ft at 6:00PM Apr 22, 2018Observed: 446.16 ft at 6:30PM Apr 22, 2018Observed: 446.38 ft at 7:00PM Apr 22, 2018Observed: 446.42 ft at 7:30PM Apr 22, 2018Observed: 446.25 ft at 8:00PM Apr 22, 2018Observed: 446.21 ft at 8:30PM Apr 22, 2018Observed: 446.2 ft at 9:00PM Apr 22, 2018Observed: 446.39 ft at 9:30PM Apr 22, 2018Observed: 446.2 ft at 10:00PM Apr 22, 2018Observed: 446.17 ft at 10:30PM Apr 22, 2018Observed: 446.11 ft at 11:00PM Apr 22, 2018Observed: 446.13 ft at 11:30PM Apr 22, 2018Observed: 446.12 ft at 12:00AM Apr 23, 2018Observed: 445.96 ft at 12:30AM Apr 23, 2018Observed: 446.06 ft at 1:00AM Apr 23, 2018Observed: 446.13 ft at 1:30AM Apr 23, 2018Observed: 446.11 ft at 2:00AM Apr 23, 2018Observed: 446.11 ft at 2:30AM Apr 23, 2018Observed: 446.1 ft at 3:00AM Apr 23, 2018Observed: 446.09 ft at 3:30AM Apr 23, 2018Observed: 446.09 ft at 4:00AM Apr 23, 2018Observed: 446.07 ft at 4:30AM Apr 23, 2018Observed: 446.08 ft at 5:00AM Apr 23, 2018Observed: 446.07 ft at 5:30AM Apr 23, 2018Observed: 446.06 ft at 6:00AM Apr 23, 2018Observed: 446.04 ft at 6:30AM Apr 23, 2018Observed: 446.04 ft at 7:00AM Apr 23, 2018Observed: 446.05 ft at 7:30AM Apr 23, 2018Observed: 446.05 ft at 8:00AM Apr 23, 2018Observed: 446.01 ft at 8:30AM Apr 23, 2018Observed: 446.02 ft at 9:00AM Apr 23, 2018Observed: 446 ft at 9:30AM Apr 23, 2018Observed: 446.03 ft at 10:00AM Apr 23, 2018Observed: 445.99 ft at 10:30AM Apr 23, 2018Observed: 446 ft at 11:00AM Apr 23, 2018Observed: 445.98 ft at 11:30AM Apr 23, 2018Observed: 445.96 ft at 12:00PM Apr 23, 2018Observed: 445.95 ft at 12:30PM Apr 23, 2018Observed: 446.02 ft at 1:00PM Apr 23, 2018Observed: 445.89 ft at 1:30PM Apr 23, 2018Observed: 445.94 ft at 2:00PM Apr 23, 2018Observed: 445.92 ft at 2:30PM Apr 23, 2018Observed: 445.93 ft at 3:00PM Apr 23, 2018Observed: 445.88 ft at 3:30PM Apr 23, 2018Observed: 445.78 ft at 4:00PM Apr 23, 2018Observed: 445.69 ft at 4:30PM Apr 23, 2018Observed: 445.66 ft at 5:00PM Apr 23, 2018Observed: 445.58 ft at 5:30PM Apr 23, 2018Observed: 445.58 ft at 6:00PM Apr 23, 2018Observed: 445.56 ft at 6:30PM Apr 23, 2018Observed: 445.76 ft at 7:00PM Apr 23, 2018Observed: 445.81 ft at 7:30PM Apr 23, 2018Observed: 445.87 ft at 8:00PM Apr 23, 2018Observed: 445.77 ft at 8:30PM Apr 23, 2018Observed: 445.88 ft at 9:00PM Apr 23, 2018Observed: 445.88 ft at 9:30PM Apr 23, 2018Observed: 445.88 ft at 10:00PM Apr 23, 2018Observed: 445.92 ft at 10:30PM Apr 23, 2018Observed: 445.9 ft at 11:00PM Apr 23, 2018Observed: 445.9 ft at 11:30PM Apr 23, 2018Observed: 445.92 ft at 12:00AM Apr 24, 2018Observed: 445.92 ft at 12:30AM Apr 24, 2018Observed: 445.9 ft at 1:00AM Apr 24, 2018Observed: 445.92 ft at 1:30AM Apr 24, 2018Observed: 445.95 ft at 2:00AM Apr 24, 2018Observed: 445.73 ft at 2:30AM Apr 24, 2018Observed: 445.68 ft at 3:00AM Apr 24, 2018Observed: 445.68 ft at 3:30AM Apr 24, 2018Observed: 445.65 ft at 4:00AM Apr 24, 2018Observed: 445.62 ft at 4:30AM Apr 24, 2018Observed: 445.6 ft at 5:00AM Apr 24, 2018Observed: 445.54 ft at 5:30AM Apr 24, 2018Observed: 445.58 ft at 6:00AM Apr 24, 2018Observed: 445.43 ft at 6:30AM Apr 24, 2018Observed: 445.69 ft at 7:00AM Apr 24, 2018Observed: 445.73 ft at 7:30AM Apr 24, 2018Observed: 445.77 ft at 8:00AM Apr 24, 2018Observed: 445.72 ft at 8:30AM Apr 24, 2018Observed: 445.78 ft at 9:00AM Apr 24, 2018Observed: 445.78 ft at 9:30AM Apr 24, 2018Observed: 445.86 ft at 10:00AM Apr 24, 2018Observed: 445.72 ft at 10:30AM Apr 24, 2018Observed: 445.79 ft at 11:00AM Apr 24, 2018Observed: 445.8 ft at 11:30AM Apr 24, 2018Observed: 445.79 ft at 12:00PM Apr 24, 2018Observed: 445.8 ft at 12:30PM Apr 24, 2018Observed: 445.8 ft at 1:00PM Apr 24, 2018Observed: 445.8 ft at 1:30PM Apr 24, 2018Observed: 445.78 ft at 2:00PM Apr 24, 2018Observed: 445.93 ft at 2:30PM Apr 24, 2018Observed: 445.76 ft at 3:00PM Apr 24, 2018Observed: 445.8 ft at 3:30PM Apr 24, 2018Observed: 445.77 ft at 4:00PM Apr 24, 2018Observed: 445.8 ft at 4:30PM Apr 24, 2018Observed: 445.78 ft at 5:00PM Apr 24, 2018Observed: 445.76 ft at 5:30PM Apr 24, 2018Observed: 445.78 ft at 6:00PM Apr 24, 2018Observed: 445.78 ft at 6:30PM Apr 24, 2018Observed: 445.77 ft at 7:00PM Apr 24, 2018Observed: 445.79 ft at 7:30PM Apr 24, 2018Observed: 445.79 ft at 8:00PM Apr 24, 2018Observed: 445.8 ft at 8:30PM Apr 24, 2018Observed: 445.78 ft at 9:00PM Apr 24, 2018Observed: 445.77 ft at 9:30PM Apr 24, 2018Observed: 445.77 ft at 10:00PM Apr 24, 2018Observed: 445.75 ft at 10:30PM Apr 24, 2018Observed: 445.74 ft at 11:00PM Apr 24, 2018Observed: 445.75 ft at 11:30PM Apr 24, 2018Observed: 445.6 ft at 12:00AM Apr 25, 2018Observed: 445.56 ft at 12:30AM Apr 25, 2018Observed: 445.52 ft at 1:00AM Apr 25, 2018Observed: 445.47 ft at 1:30AM Apr 25, 2018Observed: 445.47 ft at 2:00AM Apr 25, 2018Observed: 445.4 ft at 2:30AM Apr 25, 2018Observed: 445.4 ft at 3:00AM Apr 25, 2018Observed: 445.34 ft at 3:30AM Apr 25, 2018Observed: 445.35 ft at 4:00AM Apr 25, 2018Observed: 445.29 ft at 4:30AM Apr 25, 2018Observed: 445.34 ft at 5:00AM Apr 25, 2018Observed: 445.3 ft at 5:30AM Apr 25, 2018Observed: 445.19 ft at 6:00AM Apr 25, 2018Observed: 445.16 ft at 6:30AM Apr 25, 2018Observed: 445.13 ft at 7:00AM Apr 25, 2018Observed: 445.12 ft at 7:30AM Apr 25, 2018Observed: 445.1 ft at 8:00AM Apr 25, 2018Observed: 445.05 ft at 8:30AM Apr 25, 2018Observed: 445.03 ft at 9:00AM Apr 25, 2018Observed: 445.01 ft at 9:30AM Apr 25, 2018Observed: 445.18 ft at 10:00AM Apr 25, 2018Observed: 445 ft at 10:30AM Apr 25, 2018Observed: 445.24 ft at 11:00AM Apr 25, 2018Observed: 445.18 ft at 11:30AM Apr 25, 2018Observed: 445.2 ft at 12:00PM Apr 25, 2018Observed: 445.24 ft at 12:30PM Apr 25, 2018Observed: 445.27 ft at 1:00PM Apr 25, 2018Observed: 445.24 ft at 1:30PM Apr 25, 2018Observed: 445.24 ft at 2:00PM Apr 25, 2018Observed: 445.25 ft at 2:30PM Apr 25, 2018Observed: 445.25 ft at 3:00PM Apr 25, 2018Observed: 445.23 ft at 3:30PM Apr 25, 2018Observed: 445.24 ft at 4:00PM Apr 25, 2018Observed: 445.26 ft at 4:30PM Apr 25, 2018Observed: 445.25 ft at 5:00PM Apr 25, 2018Observed: 445.24 ft at 5:30PM Apr 25, 2018Observed: 445.24 ft at 6:00PM Apr 25, 2018Observed: 445.25 ft at 6:30PM Apr 25, 2018Observed: 445.25 ft at 7:00PM Apr 25, 2018Observed: 445.24 ft at 7:30PM Apr 25, 2018Observed: 445.2 ft at 8:00PM Apr 25, 2018Observed: 445.24 ft at 8:30PM Apr 25, 2018Observed: 445.21 ft at 9:00PM Apr 25, 2018Observed: 445.23 ft at 9:30PM Apr 25, 2018Observed: 445.22 ft at 10:00PM Apr 25, 2018Observed: 445.21 ft at 10:30PM Apr 25, 2018Observed: 445.21 ft at 11:00PM Apr 25, 2018Observed: 445.23 ft at 11:30PM Apr 25, 2018Observed: 445.35 ft at 12:00AM Apr 26, 2018Observed: 445.2 ft at 12:30AM Apr 26, 2018Observed: 445.25 ft at 1:00AM Apr 26, 2018Observed: 445.23 ft at 1:30AM Apr 26, 2018Observed: 445.22 ft at 2:00AM Apr 26, 2018Observed: 445.21 ft at 2:30AM Apr 26, 2018Observed: 445.24 ft at 3:00AM Apr 26, 2018Observed: 445.23 ft at 3:30AM Apr 26, 2018Observed: 445.22 ft at 4:00AM Apr 26, 2018Observed: 445.21 ft at 4:30AM Apr 26, 2018Observed: 445.23 ft at 5:00AM Apr 26, 2018Observed: 445.21 ft at 5:30AM Apr 26, 2018Observed: 445.22 ft at 6:00AM Apr 26, 2018Observed: 445.19 ft at 6:30AM Apr 26, 2018Observed: 445.23 ft at 7:00AM Apr 26, 2018Observed: 445.11 ft at 7:30AM Apr 26, 2018Observed: 445.2 ft at 8:00AM Apr 26, 2018Observed: 445.21 ft at 8:30AM Apr 26, 2018Observed: 445.19 ft at 9:00AM Apr 26, 2018Observed: 445.19 ft at 9:30AM Apr 26, 2018Observed: 445.18 ft at 10:00AM Apr 26, 2018Observed: 445.19 ft at 10:30AM Apr 26, 2018Observed: 445.17 ft at 11:00AM Apr 26, 2018Observed: 445.19 ft at 11:30AM Apr 26, 2018Observed: 445.16 ft at 12:00PM Apr 26, 2018Observed: 445.23 ft at 12:30PM Apr 26, 2018Observed: 445.18 ft at 1:00PM Apr 26, 2018Observed: 445.18 ft at 1:30PM Apr 26, 2018Observed: 445.16 ft at 2:00PM Apr 26, 2018Observed: 445.16 ft at 2:30PM Apr 26, 2018Observed: 445.16 ft at 3:00PM Apr 26, 2018Observed: 445.1 ft at 3:30PM Apr 26, 2018Observed: 445.14 ft at 4:00PM Apr 26, 2018Observed: 445.13 ft at 4:30PM Apr 26, 2018Observed: 445.22 ft at 5:00PM Apr 26, 2018Observed: 445.19 ft at 5:30PM Apr 26, 2018Observed: 445.33 ft at 6:00PM Apr 26, 2018Observed: 445.15 ft at 6:30PM Apr 26, 2018Observed: 445.16 ft at 7:00PM Apr 26, 2018Observed: 445.16 ft at 7:30PM Apr 26, 2018Observed: 445.05 ft at 8:00PM Apr 26, 2018Observed: 444.92 ft at 8:30PM Apr 26, 2018Observed: 444.88 ft at 9:00PM Apr 26, 2018Observed: 444.86 ft at 9:30PM Apr 26, 2018Observed: 444.81 ft at 10:00PM Apr 26, 2018Highest Forecast: 444.9 ft 1:00AM Apr 27, 2018Highest Forecast: 444.9 ft 7:00AM Apr 27, 2018Forecast: 444.8 ft 1:00PM Apr 27, 2018Forecast: 444.7 ft 7:00PM Apr 27, 2018Forecast: 444.6 ft 1:00AM Apr 28, 2018Forecast: 444.6 ft 7:00AM Apr 28, 2018Forecast: 444.5 ft 1:00PM Apr 28, 2018Forecast: 444.4 ft 7:00PM Apr 28, 2018Forecast: 444.3 ft 1:00AM Apr 29, 2018Forecast: 444.3 ft 7:00AM Apr 29, 2018Forecast: 444.2 ft 1:00PM Apr 29, 2018Forecast: 444.2 ft 7:00PM Apr 29, 2018Forecast: 444.1 ft 1:00AM Apr 30, 2018Forecast: 444 ft 7:00AM Apr 30, 2018Forecast: 443.9 ft 1:00PM Apr 30, 2018Forecast: 443.9 ft 7:00PM Apr 30, 2018Forecast: 443.8 ft 1:00AM May 01, 2018Forecast: 443.7 ft 7:00AM May 01, 2018Forecast: 443.7 ft 1:00PM May 01, 2018Forecast: 443.6 ft 7:00PM May 01, 2018Forecast: 443.5 ft 1:00AM May 02, 2018Forecast: 443.5 ft 7:00AM May 02, 2018Forecast: 443.4 ft 1:00PM May 02, 2018Forecast: 443.4 ft 7:00PM May 02, 2018Forecast: 443.3 ft 1:00AM May 03, 2018Forecast: 443.3 ft 7:00AM May 03, 2018SRDI2(plotting HTIRG) Graph Created (11:38PM Apr 26, 2018)ObservedForecast (issued 10:04AM Apr 26)Latest observed value: 444.81 ft at 10:00 PM CDT 26-Apr-2018.
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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/dam 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)
Not Available

Historic Crests
Currently none available.

Recent Crests
Currently none available.

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 floods
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 Not Available 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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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: 21-Dec-2016 10:37 PM
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