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Hydrograph River at a Glance Download
Illinois River at Marseilles Lock (tailwater) Tailwater (ft)Flow (kcfs)Observed: 460.93 ft at 10:00PM May 11, 2024Observed: 460.89 ft at 10:30PM May 11, 2024Observed: 460.96 ft at 11:00PM May 11, 2024Observed: 460.88 ft at 11:30PM May 11, 2024Observed: 460.85 ft at 12:00AM May 12, 2024Observed: 460.95 ft at 12:30AM May 12, 2024Observed: 460.83 ft at 1:00AM May 12, 2024Observed: 460.82 ft at 1:30AM May 12, 2024Observed: 460.88 ft at 2:00AM May 12, 2024Observed: 460.88 ft at 2:30AM May 12, 2024Observed: 460.9 ft at 3:00AM May 12, 2024Observed: 460.9 ft at 3:30AM May 12, 2024Observed: 460.93 ft at 4:00AM May 12, 2024Observed: 460.95 ft at 4:30AM May 12, 2024Observed: 460.96 ft at 5:00AM May 12, 2024Observed: 460.96 ft at 5:30AM May 12, 2024Observed: 461.02 ft at 6:00AM May 12, 2024Observed: 460.98 ft at 6:30AM May 12, 2024Observed: 460.98 ft at 7:00AM May 12, 2024Observed: 460.96 ft at 7:30AM May 12, 2024Observed: 460.94 ft at 8:00AM May 12, 2024Observed: 461.13 ft at 8:30AM May 12, 2024Observed: 460.96 ft at 9:00AM May 12, 2024Observed: 460.95 ft at 9:30AM May 12, 2024Observed: 460.93 ft at 10:00AM May 12, 2024Observed: 460.93 ft at 10:30AM May 12, 2024Observed: 461.03 ft at 11:00AM May 12, 2024Observed: 460.97 ft at 11:30AM May 12, 2024Observed: 460.94 ft at 12:00PM May 12, 2024Observed: 460.93 ft at 12:30PM May 12, 2024Observed: 461.1 ft at 1:00PM May 12, 2024Observed: 461.02 ft at 1:30PM May 12, 2024Observed: 461.18 ft at 2:00PM May 12, 2024Observed: 460.88 ft at 2:30PM May 12, 2024Observed: 460.82 ft at 3:00PM May 12, 2024Observed: 461.05 ft at 3:30PM May 12, 2024Observed: 460.75 ft at 4:00PM May 12, 2024Observed: 460.63 ft at 4:30PM May 12, 2024Observed: 460.53 ft at 5:00PM May 12, 2024Observed: 460.58 ft at 5:30PM May 12, 2024Observed: 460.43 ft at 6:00PM May 12, 2024Observed: 460.43 ft at 6:30PM May 12, 2024Observed: 460.5 ft at 7:00PM May 12, 2024Observed: 460.45 ft at 7:30PM May 12, 2024Observed: 460.71 ft at 8:00PM May 12, 2024Observed: 460.62 ft at 8:30PM May 12, 2024Observed: 460.51 ft at 9:00PM May 12, 2024Observed: 460.61 ft at 9:30PM May 12, 2024Observed: 460.62 ft at 10:00PM May 12, 2024Observed: 460.59 ft at 10:30PM May 12, 2024Observed: 460.63 ft at 11:00PM May 12, 2024Observed: 460.6 ft at 11:30PM May 12, 2024Observed: 460.53 ft at 12:00AM May 13, 2024Observed: 460.51 ft at 12:30AM May 13, 2024Observed: 460.47 ft at 1:00AM May 13, 2024Observed: 460.54 ft at 1:30AM May 13, 2024Observed: 460.48 ft at 2:00AM May 13, 2024Observed: 460.69 ft at 2:30AM May 13, 2024Observed: 460.51 ft at 3:00AM May 13, 2024Observed: 460.45 ft at 3:30AM May 13, 2024Observed: 460.47 ft at 4:00AM May 13, 2024Observed: 460.49 ft at 4:30AM May 13, 2024Observed: 460.43 ft at 5:00AM May 13, 2024Observed: 460.52 ft at 5:30AM May 13, 2024Observed: 460.54 ft at 6:00AM May 13, 2024Observed: 460.56 ft at 6:30AM May 13, 2024Observed: 460.6 ft at 7:00AM May 13, 2024Observed: 460.68 ft at 7:30AM May 13, 2024Observed: 460.8 ft at 8:00AM May 13, 2024Observed: 460.54 ft at 8:30AM May 13, 2024Observed: 460.54 ft at 9:00AM May 13, 2024Observed: 460.71 ft at 9:30AM May 13, 2024Observed: 460.54 ft at 10:00AM May 13, 2024Observed: 460.54 ft at 10:30AM May 13, 2024Observed: 460.51 ft at 11:00AM May 13, 2024Observed: 460.49 ft at 11:30AM May 13, 2024Observed: 460.51 ft at 12:00PM May 13, 2024Observed: 460.46 ft at 12:30PM May 13, 2024Observed: 460.45 ft at 1:00PM May 13, 2024Observed: 460.43 ft at 1:30PM May 13, 2024Observed: 460.41 ft at 2:00PM May 13, 2024Observed: 460.4 ft at 2:30PM May 13, 2024Observed: 460.38 ft at 3:00PM May 13, 2024Observed: 460.38 ft at 3:30PM May 13, 2024Observed: 460.39 ft at 4:00PM May 13, 2024Observed: 460.42 ft at 4:30PM May 13, 2024Observed: 460.46 ft at 5:00PM May 13, 2024Observed: 460.47 ft at 5:30PM May 13, 2024Observed: 460.5 ft at 6:00PM May 13, 2024Observed: 460.61 ft at 6:30PM May 13, 2024Observed: 460.68 ft at 7:00PM May 13, 2024Observed: 460.75 ft at 7:30PM May 13, 2024Observed: 460.79 ft at 8:00PM May 13, 2024Observed: 460.83 ft at 8:30PM May 13, 2024Observed: 460.96 ft at 9:00PM May 13, 2024Observed: 461.08 ft at 9:30PM May 13, 2024Observed: 461.08 ft at 10:00PM May 13, 2024Observed: 461.18 ft at 10:30PM May 13, 2024Observed: 461.18 ft at 11:00PM May 13, 2024Observed: 461.3 ft at 11:30PM May 13, 2024Observed: 461.25 ft at 12:00AM May 14, 2024Observed: 461.23 ft at 12:30AM May 14, 2024Observed: 461.25 ft at 1:00AM May 14, 2024Observed: 461.26 ft at 1:30AM May 14, 2024Observed: 461.29 ft at 2:00AM May 14, 2024Observed: 461.35 ft at 2:30AM May 14, 2024Observed: 461.38 ft at 3:00AM May 14, 2024Observed: 461.4 ft at 3:30AM May 14, 2024Observed: 461.42 ft at 4:00AM May 14, 2024Observed: 461.43 ft at 4:30AM May 14, 2024Observed: 461.4 ft at 5:00AM May 14, 2024Observed: 461.44 ft at 5:30AM May 14, 2024Observed: 461.55 ft at 6:00AM May 14, 2024Observed: 461.57 ft at 6:30AM May 14, 2024Observed: 461.57 ft at 7:00AM May 14, 2024Observed: 461.58 ft at 7:30AM May 14, 2024Observed: 461.63 ft at 8:00AM May 14, 2024Observed: 461.68 ft at 8:30AM May 14, 2024Observed: 461.73 ft at 9:00AM May 14, 2024Observed: 461.82 ft at 9:30AM May 14, 2024Observed: 461.87 ft at 10:00AM May 14, 2024Observed: 461.96 ft at 10:30AM May 14, 2024Observed: 462.05 ft at 11:00AM May 14, 2024Observed: 462.09 ft at 11:30AM May 14, 2024Observed: 462.1 ft at 12:00PM May 14, 2024Observed: 462.13 ft at 12:30PM May 14, 2024Observed: 462.2 ft at 1:00PM May 14, 2024Observed: 462.28 ft at 1:30PM May 14, 2024Observed: 462.35 ft at 2:00PM May 14, 2024Observed: 462.34 ft at 2:30PM May 14, 2024Observed: 462.57 ft at 3:00PM May 14, 2024Observed: 462.36 ft at 3:30PM May 14, 2024Observed: 462.36 ft at 4:00PM May 14, 2024Observed: 462.33 ft at 4:30PM May 14, 2024Observed: 462.33 ft at 5:00PM May 14, 2024Observed: 462.38 ft at 5:30PM May 14, 2024Observed: 462.43 ft at 6:00PM May 14, 2024Observed: 462.46 ft at 6:30PM May 14, 2024Observed: 462.48 ft at 7:00PM May 14, 2024Observed: 462.5 ft at 7:30PM May 14, 2024Observed: 462.57 ft at 8:00PM May 14, 2024Observed: 462.65 ft at 8:30PM May 14, 2024Observed: 462.57 ft at 9:00PM May 14, 2024Observed: 462.58 ft at 9:30PM May 14, 2024Observed: 462.85 ft at 10:00PM May 14, 2024Observed: 462.68 ft at 10:30PM May 14, 2024Observed: 462.71 ft at 11:00PM May 14, 2024Observed: 462.83 ft at 11:30PM May 14, 2024Observed: 462.81 ft at 12:00AM May 15, 2024Observed: 462.86 ft at 12:30AM May 15, 2024Observed: 462.89 ft at 1:00AM May 15, 2024Observed: 462.93 ft at 1:30AM May 15, 2024Observed: 462.94 ft at 2:00AM May 15, 2024Highest Observation: 463.36 ft at 2:30AM May 15, 2024Observed: 463.03 ft at 3:00AM May 15, 2024Observed: 463.08 ft at 3:30AM May 15, 2024Observed: 463 ft at 4:00AM May 15, 2024Observed: 463.04 ft at 4:30AM May 15, 2024Observed: 463.04 ft at 5:00AM May 15, 2024Observed: 463.04 ft at 5:30AM May 15, 2024Observed: 463.04 ft at 6:00AM May 15, 2024Observed: 463.05 ft at 6:30AM May 15, 2024Observed: 463.11 ft at 7:00AM May 15, 2024Observed: 463.13 ft at 7:30AM May 15, 2024Observed: 463.13 ft at 8:00AM May 15, 2024Observed: 463.14 ft at 8:30AM May 15, 2024Observed: 463.12 ft at 9:00AM May 15, 2024Observed: 463.08 ft at 9:30AM May 15, 2024Observed: 463.07 ft at 10:00AM May 15, 2024Observed: 463.05 ft at 10:30AM May 15, 2024Observed: 463.03 ft at 11:00AM May 15, 2024Observed: 462.98 ft at 11:30AM May 15, 2024Observed: 462.96 ft at 12:00PM May 15, 2024Observed: 463.05 ft at 12:30PM May 15, 2024Observed: 462.94 ft at 1:00PM May 15, 2024Observed: 462.93 ft at 1:30PM May 15, 2024Observed: 463 ft at 2:00PM May 15, 2024Observed: 462.87 ft at 2:30PM May 15, 2024Observed: 462.82 ft at 3:00PM May 15, 2024Observed: 462.78 ft at 3:30PM May 15, 2024Observed: 462.75 ft at 4:00PM May 15, 2024Observed: 462.74 ft at 4:30PM May 15, 2024Observed: 462.72 ft at 5:00PM May 15, 2024Observed: 462.69 ft at 5:30PM May 15, 2024Observed: 462.62 ft at 6:00PM May 15, 2024Observed: 462.61 ft at 6:30PM May 15, 2024Observed: 462.61 ft at 7:00PM May 15, 2024Observed: 462.61 ft at 7:30PM May 15, 2024Observed: 462.6 ft at 8:00PM May 15, 2024Observed: 462.58 ft at 8:30PM May 15, 2024Observed: 462.56 ft at 9:00PM May 15, 2024Observed: 462.51 ft at 9:30PM May 15, 2024Observed: 462.48 ft at 10:00PM May 15, 2024Observed: 462.43 ft at 10:30PM May 15, 2024Observed: 462.41 ft at 11:00PM May 15, 2024Observed: 462.39 ft at 11:30PM May 15, 2024Observed: 462.35 ft at 12:00AM May 16, 2024Observed: 462.33 ft at 12:30AM May 16, 2024Observed: 462.38 ft at 1:00AM May 16, 2024Observed: 462.29 ft at 1:30AM May 16, 2024Observed: 462.29 ft at 2:00AM May 16, 2024Observed: 462.29 ft at 2:30AM May 16, 2024Observed: 462.28 ft at 3:00AM May 16, 2024Observed: 462.28 ft at 3:30AM May 16, 2024Observed: 462.26 ft at 4:00AM May 16, 2024Observed: 462.25 ft at 4:30AM May 16, 2024Observed: 462.15 ft at 5:00AM May 16, 2024Observed: 462.1 ft at 5:30AM May 16, 2024Observed: 462.06 ft at 6:00AM May 16, 2024Observed: 462.05 ft at 6:30AM May 16, 2024Observed: 462.09 ft at 7:00AM May 16, 2024Observed: 462 ft at 7:30AM May 16, 2024Observed: 461.96 ft at 8:00AM May 16, 2024Observed: 461.97 ft at 8:30AM May 16, 2024Observed: 461.97 ft at 9:00AM May 16, 2024Observed: 461.89 ft at 9:30AM May 16, 2024Observed: 461.79 ft at 10:00AM May 16, 2024Observed: 461.86 ft at 10:30AM May 16, 2024Observed: 461.77 ft at 11:00AM May 16, 2024Observed: 461.8 ft at 11:30AM May 16, 2024Observed: 461.62 ft at 12:00PM May 16, 2024Observed: 461.65 ft at 12:30PM May 16, 2024Observed: 461.63 ft at 1:00PM May 16, 2024Observed: 461.7 ft at 1:30PM May 16, 2024Observed: 461.66 ft at 2:00PM May 16, 2024Observed: 461.67 ft at 2:30PM May 16, 2024Observed: 461.68 ft at 3:00PM May 16, 2024Observed: 461.72 ft at 3:30PM May 16, 2024Observed: 461.72 ft at 4:00PM May 16, 2024Observed: 461.73 ft at 4:30PM May 16, 2024Observed: 461.93 ft at 5:00PM May 16, 2024Observed: 461.68 ft at 5:30PM May 16, 2024Observed: 461.85 ft at 6:00PM May 16, 2024Observed: 461.88 ft at 6:30PM May 16, 2024Observed: 461.9 ft at 7:00PM May 16, 2024Observed: 461.95 ft at 7:30PM May 16, 2024Observed: 462.01 ft at 8:00PM May 16, 2024Observed: 462.02 ft at 8:30PM May 16, 2024Observed: 462.04 ft at 9:00PM May 16, 2024Observed: 462.04 ft at 9:30PM May 16, 2024Observed: 462.08 ft at 10:00PM May 16, 2024Observed: 462 ft at 10:30PM May 16, 2024Observed: 461.93 ft at 11:00PM May 16, 2024Observed: 461.9 ft at 11:30PM May 16, 2024Observed: 462.01 ft at 12:00AM May 17, 2024Observed: 461.92 ft at 12:30AM May 17, 2024Observed: 461.88 ft at 1:00AM May 17, 2024Observed: 461.86 ft at 1:30AM May 17, 2024Observed: 461.89 ft at 2:00AM May 17, 2024Observed: 461.88 ft at 2:30AM May 17, 2024Observed: 461.8 ft at 3:00AM May 17, 2024Observed: 461.66 ft at 3:30AM May 17, 2024Observed: 461.6 ft at 4:00AM May 17, 2024Observed: 461.57 ft at 4:30AM May 17, 2024Observed: 461.54 ft at 5:00AM May 17, 2024Observed: 461.52 ft at 5:30AM May 17, 2024Observed: 461.39 ft at 6:00AM May 17, 2024Observed: 461.29 ft at 6:30AM May 17, 2024Observed: 461.21 ft at 7:00AM May 17, 2024Observed: 461.16 ft at 7:30AM May 17, 2024Observed: 461.13 ft at 8:00AM May 17, 2024Observed: 461.08 ft at 8:30AM May 17, 2024Observed: 461.07 ft at 9:00AM May 17, 2024Observed: 461.1 ft at 9:30AM May 17, 2024Observed: 461 ft at 10:00AM May 17, 2024Observed: 460.94 ft at 10:30AM May 17, 2024Observed: 460.94 ft at 11:00AM May 17, 2024Observed: 460.91 ft at 11:30AM May 17, 2024Observed: 460.95 ft at 12:00PM May 17, 2024Observed: 460.98 ft at 12:30PM May 17, 2024Observed: 460.98 ft at 1:00PM May 17, 2024Observed: 460.99 ft at 1:30PM May 17, 2024Observed: 461.07 ft at 2:00PM May 17, 2024Observed: 460.92 ft at 2:30PM May 17, 2024Observed: 461.26 ft at 3:00PM May 17, 2024Observed: 461.35 ft at 3:30PM May 17, 2024Observed: 461.42 ft at 4:00PM May 17, 2024Observed: 461.4 ft at 4:30PM May 17, 2024Observed: 461.38 ft at 5:00PM May 17, 2024Observed: 461.3 ft at 5:30PM May 17, 2024Observed: 461.24 ft at 6:00PM May 17, 2024Observed: 461.2 ft at 6:30PM May 17, 2024Observed: 461.19 ft at 7:00PM May 17, 2024Observed: 461.21 ft at 7:30PM May 17, 2024Observed: 461.24 ft at 8:00PM May 17, 2024Observed: 461.43 ft at 8:30PM May 17, 2024Observed: 461.18 ft at 9:00PM May 17, 2024Observed: 461.18 ft at 9:30PM May 17, 2024Observed: 461.29 ft at 10:00PM May 17, 2024Observed: 461.11 ft at 10:30PM May 17, 2024Observed: 461.08 ft at 11:00PM May 17, 2024Observed: 461.05 ft at 11:30PM May 17, 2024Observed: 461.19 ft at 12:00AM May 18, 2024Observed: 461.03 ft at 12:30AM May 18, 2024Observed: 461.04 ft at 1:00AM May 18, 2024Observed: 461.02 ft at 1:30AM May 18, 2024Observed: 461.11 ft at 2:00AM May 18, 2024Observed: 460.98 ft at 2:30AM May 18, 2024Observed: 460.98 ft at 3:00AM May 18, 2024Observed: 460.96 ft at 3:30AM May 18, 2024Observed: 460.94 ft at 4:00AM May 18, 2024Observed: 460.93 ft at 4:30AM May 18, 2024Observed: 460.93 ft at 5:00AM May 18, 2024Observed: 460.93 ft at 5:30AM May 18, 2024Observed: 460.91 ft at 6:00AM May 18, 2024Observed: 460.91 ft at 6:30AM May 18, 2024Observed: 461.01 ft at 7:00AM May 18, 2024Observed: 460.91 ft at 7:30AM May 18, 2024Observed: 460.94 ft at 8:00AM May 18, 2024Observed: 461.08 ft at 8:30AM May 18, 2024Observed: 461.03 ft at 9:00AM May 18, 2024Observed: 461.14 ft at 9:30AM May 18, 2024Observed: 461.14 ft at 10:00AM May 18, 2024Observed: 461.23 ft at 10:30AM May 18, 2024Observed: 461.15 ft at 11:00AM May 18, 2024Observed: 461.34 ft at 11:30AM May 18, 2024Observed: 461.16 ft at 12:00PM May 18, 2024Observed: 461.05 ft at 12:30PM May 18, 2024Observed: 461.06 ft at 1:00PM May 18, 2024Observed: 461.04 ft at 1:30PM May 18, 2024Observed: 461.03 ft at 2:00PM May 18, 2024Observed: 460.78 ft at 2:30PM May 18, 2024Observed: 460.6 ft at 3:00PM May 18, 2024Observed: 460.57 ft at 3:30PM May 18, 2024Observed: 460.58 ft at 4:00PM May 18, 2024Observed: 460.54 ft at 4:30PM May 18, 2024Observed: 460.57 ft at 5:00PM May 18, 2024Observed: 460.64 ft at 5:30PM May 18, 2024Observed: 460.75 ft at 6:00PM May 18, 2024Observed: 460.58 ft at 6:30PM May 18, 2024Observed: 460.61 ft at 7:00PM May 18, 2024Observed: 460.56 ft at 7:30PM May 18, 2024Observed: 460.58 ft at 8:00PM May 18, 2024Observed: 460.58 ft at 8:30PM May 18, 2024Observed: 460.57 ft at 9:00PM May 18, 2024Observed: 460.56 ft at 9:30PM May 18, 2024Highest Forecast: 460.7 ft 1:00AM May 19, 2024Forecast: 460.6 ft 7:00AM May 19, 2024Forecast: 460.6 ft 1:00PM May 19, 2024Forecast: 460.5 ft 7:00PM May 19, 2024Forecast: 460.4 ft 1:00AM May 20, 2024Forecast: 460.4 ft 7:00AM May 20, 2024Forecast: 460.3 ft 1:00PM May 20, 2024Forecast: 460.2 ft 7:00PM May 20, 2024Forecast: 460.2 ft 1:00AM May 21, 2024Forecast: 460.1 ft 7:00AM May 21, 2024Forecast: 460.1 ft 1:00PM May 21, 2024Forecast: 460.1 ft 7:00PM May 21, 2024Forecast: 460 ft 1:00AM May 22, 2024Forecast: 460 ft 7:00AM May 22, 2024Forecast: 459.9 ft 1:00PM May 22, 2024Forecast: 459.9 ft 7:00PM May 22, 2024Forecast: 459.8 ft 1:00AM May 23, 2024Forecast: 459.8 ft 7:00AM May 23, 2024Forecast: 459.7 ft 1:00PM May 23, 2024Forecast: 459.7 ft 7:00PM May 23, 2024Forecast: 459.7 ft 1:00AM May 24, 2024Forecast: 459.6 ft 7:00AM May 24, 2024Forecast: 459.6 ft 1:00PM May 24, 2024Forecast: 459.6 ft 7:00PM May 24, 2024Forecast: 459.6 ft 1:00AM May 25, 2024Forecast: 459.5 ft 7:00AM May 25, 2024USGS--Water Resources of the United StatesMMOI2(plotting HTIRG) Graph Created (9:55PM May 18, 2024)ObservedForecast (issued 9:35AM May 18)Latest observed value: 460.56 ft at 9:30 PM CDT 18-May-2024. Flood Stage is 467 ft
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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 Marseilles Lock (tailwater) are issued routinely year-round.

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Upstream Gauge - at Morris Upstream Gauge Downstream Gauge Downstream Gauge - at Ottawa
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 467
Action Stage: 466.5
Low Stage (in feet): 456.5

Historic Crests
(1) 476.72 ft on 04/19/2013
(2) 475.89 ft on 09/16/2008
(3) 475.84 ft on 05/19/2020
(4) 474.83 ft on 02/22/1997
(5) 474.70 ft on 04/09/1983
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 475.84 ft on 05/19/2020
(2) 474.18 ft on 05/02/2019
(3) 474.26 ft on 02/22/2018
(4) 469.00 ft on 05/02/2017
(5) 471.12 ft on 12/30/2015
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
483.5 High water levels cause Marseilles Lock to shut down.
466.7 High water levels begin to impact shipping interests along the river.
Low Water Impacts Collapse
If you notice any errors in the below information, please contact our Webmaster
456.5 Low water levels begin to impact shipping interests along the river.
About This Location Collapse

Latitude: 41.328408° N, Longitude: 88.755137° W, Horizontal Datum: Unknown

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 467 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 467 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?
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Hydrologic Resources Additional Resources
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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
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Romeoville, IL 60446
(815) 834-1435
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