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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: The National Hydrologic Discussion, Area Hydrologic Discussion, and Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via https://www.weather.gov/owp/operations, as described in the StoryMap here.



Hydrograph River at a Glance Download
Illinois River near La Salle Stage (ft)Flow (kcfs)Observed: 10.85 ft at 1:45PM Sep 14, 2023Observed: 10.92 ft at 2:00PM Sep 14, 2023Observed: 10.8 ft at 2:15PM Sep 14, 2023Observed: 10.95 ft at 2:30PM Sep 14, 2023Observed: 10.79 ft at 2:45PM Sep 14, 2023Observed: 10.8 ft at 3:00PM Sep 14, 2023Observed: 10.93 ft at 3:15PM Sep 14, 2023Observed: 10.79 ft at 3:30PM Sep 14, 2023Observed: 10.94 ft at 3:45PM Sep 14, 2023Observed: 10.83 ft at 4:00PM Sep 14, 2023Observed: 10.81 ft at 4:15PM Sep 14, 2023Observed: 10.82 ft at 4:30PM Sep 14, 2023Observed: 10.82 ft at 4:45PM Sep 14, 2023Observed: 10.82 ft at 5:00PM Sep 14, 2023Observed: 10.95 ft at 5:15PM Sep 14, 2023Observed: 10.81 ft at 5:30PM Sep 14, 2023Observed: 10.82 ft at 5:45PM Sep 14, 2023Observed: 10.82 ft at 6:00PM Sep 14, 2023Observed: 10.87 ft at 6:15PM Sep 14, 2023Observed: 10.81 ft at 6:30PM Sep 14, 2023Observed: 10.81 ft at 6:45PM Sep 14, 2023Observed: 10.95 ft at 7:00PM Sep 14, 2023Observed: 10.98 ft at 7:15PM Sep 14, 2023Observed: 10.83 ft at 7:30PM Sep 14, 2023Observed: 10.97 ft at 7:45PM Sep 14, 2023Observed: 10.96 ft at 8:00PM Sep 14, 2023Observed: 11.09 ft at 8:15PM Sep 14, 2023Observed: 10.86 ft at 8:30PM Sep 14, 2023Observed: 10.98 ft at 8:45PM Sep 14, 2023Observed: 10.98 ft at 9:00PM Sep 14, 2023Observed: 11 ft at 9:15PM Sep 14, 2023Observed: 10.83 ft at 9:30PM Sep 14, 2023Observed: 11.06 ft at 9:45PM Sep 14, 2023Observed: 10.98 ft at 10:00PM Sep 14, 2023Observed: 10.88 ft at 10:15PM Sep 14, 2023Observed: 11.01 ft at 10:30PM Sep 14, 2023Observed: 11.03 ft at 10:45PM Sep 14, 2023Observed: 10.9 ft at 11:00PM Sep 14, 2023Observed: 11.02 ft at 11:15PM Sep 14, 2023Observed: 11.03 ft at 11:30PM Sep 14, 2023Observed: 10.97 ft at 11:45PM Sep 14, 2023Observed: 10.87 ft at 12:00AM Sep 15, 2023Observed: 10.87 ft at 12:15AM Sep 15, 2023Observed: 10.79 ft at 12:30AM Sep 15, 2023Observed: 10.82 ft at 12:45AM Sep 15, 2023Observed: 10.76 ft at 1:00AM Sep 15, 2023Observed: 10.76 ft at 1:15AM Sep 15, 2023Observed: 10.74 ft at 1:30AM Sep 15, 2023Observed: 10.74 ft at 1:45AM Sep 15, 2023Observed: 10.79 ft at 2:00AM Sep 15, 2023Observed: 10.74 ft at 2:15AM Sep 15, 2023Observed: 10.73 ft at 2:30AM Sep 15, 2023Observed: 10.83 ft at 2:45AM Sep 15, 2023Observed: 10.76 ft at 3:00AM Sep 15, 2023Observed: 10.88 ft at 3:15AM Sep 15, 2023Observed: 10.74 ft at 3:30AM Sep 15, 2023Observed: 10.9 ft at 3:45AM Sep 15, 2023Observed: 10.79 ft at 4:00AM Sep 15, 2023Observed: 10.84 ft at 4:15AM Sep 15, 2023Observed: 10.67 ft at 4:30AM Sep 15, 2023Observed: 10.68 ft at 4:45AM Sep 15, 2023Observed: 10.81 ft at 5:00AM Sep 15, 2023Observed: 10.85 ft at 5:15AM Sep 15, 2023Observed: 10.86 ft at 5:30AM Sep 15, 2023Observed: 10.74 ft at 5:45AM Sep 15, 2023Observed: 10.88 ft at 6:00AM Sep 15, 2023Observed: 10.69 ft at 6:15AM Sep 15, 2023Observed: 10.86 ft at 6:30AM Sep 15, 2023Observed: 10.85 ft at 6:45AM Sep 15, 2023Observed: 10.88 ft at 7:00AM Sep 15, 2023Observed: 10.72 ft at 7:15AM Sep 15, 2023Observed: 10.69 ft at 7:30AM Sep 15, 2023Observed: 10.67 ft at 7:45AM Sep 15, 2023Observed: 10.66 ft at 8:00AM Sep 15, 2023Observed: 10.84 ft at 8:15AM Sep 15, 2023Observed: 10.7 ft at 8:30AM Sep 15, 2023Observed: 10.83 ft at 8:45AM Sep 15, 2023Observed: 10.82 ft at 9:00AM Sep 15, 2023Observed: 10.65 ft at 9:15AM Sep 15, 2023Observed: 10.83 ft at 9:30AM Sep 15, 2023Observed: 10.71 ft at 9:45AM Sep 15, 2023Observed: 10.74 ft at 10:00AM Sep 15, 2023Observed: 10.67 ft at 10:15AM Sep 15, 2023Observed: 10.8 ft at 10:30AM Sep 15, 2023Observed: 10.65 ft at 10:45AM Sep 15, 2023Observed: 10.71 ft at 11:00AM Sep 15, 2023Observed: 10.6 ft at 11:15AM Sep 15, 2023Observed: 10.61 ft at 11:30AM Sep 15, 2023Observed: 10.61 ft at 11:45AM Sep 15, 2023Observed: 10.63 ft at 12:00PM Sep 15, 2023Observed: 10.62 ft at 12:15PM Sep 15, 2023Observed: 10.59 ft at 12:30PM Sep 15, 2023Observed: 10.77 ft at 12:45PM Sep 15, 2023Observed: 10.79 ft at 1:00PM Sep 15, 2023Observed: 10.59 ft at 1:15PM Sep 15, 2023Observed: 10.72 ft at 1:30PM Sep 15, 2023Observed: 10.59 ft at 1:45PM Sep 15, 2023Observed: 10.62 ft at 2:00PM Sep 15, 2023Observed: 10.58 ft at 2:15PM Sep 15, 2023Observed: 10.58 ft at 2:30PM Sep 15, 2023Observed: 10.7 ft at 2:45PM Sep 15, 2023Observed: 10.81 ft at 3:00PM Sep 15, 2023Observed: 10.54 ft at 3:15PM Sep 15, 2023Observed: 10.56 ft at 3:30PM Sep 15, 2023Observed: 10.69 ft at 3:45PM Sep 15, 2023Observed: 10.55 ft at 4:00PM Sep 15, 2023Observed: 10.57 ft at 4:15PM Sep 15, 2023Observed: 10.52 ft at 4:30PM Sep 15, 2023Observed: 10.66 ft at 4:45PM Sep 15, 2023Observed: 10.5 ft at 5:00PM Sep 15, 2023Observed: 10.66 ft at 5:15PM Sep 15, 2023Observed: 10.51 ft at 5:30PM Sep 15, 2023Observed: 10.49 ft at 5:45PM Sep 15, 2023Observed: 10.6 ft at 6:00PM Sep 15, 2023Observed: 10.61 ft at 6:15PM Sep 15, 2023Observed: 10.53 ft at 6:30PM Sep 15, 2023Observed: 10.69 ft at 6:45PM Sep 15, 2023Observed: 10.43 ft at 7:00PM Sep 15, 2023Observed: 10.44 ft at 7:15PM Sep 15, 2023Observed: 10.6 ft at 7:30PM Sep 15, 2023Observed: 10.55 ft at 7:45PM Sep 15, 2023Observed: 10.67 ft at 8:00PM Sep 15, 2023Observed: 10.51 ft at 8:15PM Sep 15, 2023Observed: 10.42 ft at 8:30PM Sep 15, 2023Observed: 10.49 ft at 8:45PM Sep 15, 2023Observed: 10.73 ft at 9:00PM Sep 15, 2023Observed: 10.54 ft at 9:15PM Sep 15, 2023Observed: 10.63 ft at 9:30PM Sep 15, 2023Observed: 10.53 ft at 9:45PM Sep 15, 2023Observed: 10.52 ft at 10:00PM Sep 15, 2023Observed: 10.5 ft at 10:15PM Sep 15, 2023Observed: 10.54 ft at 10:30PM Sep 15, 2023Observed: 10.52 ft at 10:45PM Sep 15, 2023Observed: 10.53 ft at 11:00PM Sep 15, 2023Observed: 10.51 ft at 11:15PM Sep 15, 2023Observed: 10.65 ft at 11:30PM Sep 15, 2023Observed: 10.69 ft at 11:45PM Sep 15, 2023Observed: 10.53 ft at 12:00AM Sep 16, 2023Observed: 10.69 ft at 12:15AM Sep 16, 2023Observed: 10.54 ft at 12:45AM Sep 16, 2023Observed: 10.56 ft at 1:00AM Sep 16, 2023Observed: 10.57 ft at 1:15AM Sep 16, 2023Observed: 10.56 ft at 1:30AM Sep 16, 2023Observed: 10.54 ft at 1:45AM Sep 16, 2023Observed: 10.54 ft at 3:00AM Sep 16, 2023Observed: 10.55 ft at 3:15AM Sep 16, 2023Observed: 10.52 ft at 3:30AM Sep 16, 2023Observed: 10.58 ft at 3:45AM Sep 16, 2023Observed: 10.58 ft at 4:00AM Sep 16, 2023Observed: 10.58 ft at 4:15AM Sep 16, 2023Observed: 10.53 ft at 4:30AM Sep 16, 2023Observed: 10.55 ft at 4:45AM Sep 16, 2023Observed: 10.55 ft at 5:00AM Sep 16, 2023Observed: 10.56 ft at 5:15AM Sep 16, 2023Observed: 10.58 ft at 5:30AM Sep 16, 2023Observed: 10.59 ft at 5:45AM Sep 16, 2023Observed: 10.56 ft at 6:00AM Sep 16, 2023Observed: 10.52 ft at 6:15AM Sep 16, 2023Observed: 10.53 ft at 6:30AM Sep 16, 2023Observed: 10.55 ft at 6:45AM Sep 16, 2023Observed: 10.54 ft at 7:00AM Sep 16, 2023Observed: 10.54 ft at 7:15AM Sep 16, 2023Observed: 10.51 ft at 7:30AM Sep 16, 2023Observed: 10.56 ft at 7:45AM Sep 16, 2023Observed: 10.53 ft at 8:00AM Sep 16, 2023Observed: 10.54 ft at 8:15AM Sep 16, 2023Observed: 10.54 ft at 8:30AM Sep 16, 2023Observed: 10.54 ft at 8:45AM Sep 16, 2023Observed: 10.6 ft at 9:00AM Sep 16, 2023Observed: 10.54 ft at 9:15AM Sep 16, 2023Observed: 10.6 ft at 9:30AM Sep 16, 2023Observed: 10.57 ft at 9:45AM Sep 16, 2023Observed: 10.63 ft at 10:00AM Sep 16, 2023Observed: 10.58 ft at 10:15AM Sep 16, 2023Observed: 10.67 ft at 10:30AM Sep 16, 2023Observed: 10.59 ft at 10:45AM Sep 16, 2023Observed: 10.6 ft at 11:00AM Sep 16, 2023Observed: 10.68 ft at 11:15AM Sep 16, 2023Observed: 10.65 ft at 11:30AM Sep 16, 2023Observed: 10.6 ft at 11:45AM Sep 16, 2023Observed: 10.57 ft at 12:00PM Sep 16, 2023Observed: 10.73 ft at 12:15PM Sep 16, 2023Observed: 10.63 ft at 12:30PM Sep 16, 2023Observed: 10.66 ft at 12:45PM Sep 16, 2023Observed: 10.67 ft at 1:00PM Sep 16, 2023Observed: 10.61 ft at 1:15PM Sep 16, 2023Observed: 10.64 ft at 1:30PM Sep 16, 2023Observed: 10.7 ft at 1:45PM Sep 16, 2023Observed: 10.65 ft at 2:00PM Sep 16, 2023Observed: 10.6 ft at 2:15PM Sep 16, 2023Observed: 10.6 ft at 2:30PM Sep 16, 2023Observed: 10.6 ft at 2:45PM Sep 16, 2023Observed: 10.6 ft at 3:00PM Sep 16, 2023Observed: 10.82 ft at 3:15PM Sep 16, 2023Observed: 10.62 ft at 3:30PM Sep 16, 2023Observed: 10.6 ft at 3:45PM Sep 16, 2023Observed: 10.59 ft at 4:00PM Sep 16, 2023Observed: 10.7 ft at 4:15PM Sep 16, 2023Observed: 10.76 ft at 4:30PM Sep 16, 2023Observed: 10.73 ft at 4:45PM Sep 16, 2023Observed: 10.6 ft at 5:00PM Sep 16, 2023Observed: 10.79 ft at 5:15PM Sep 16, 2023Observed: 10.71 ft at 5:30PM Sep 16, 2023Observed: 10.72 ft at 5:45PM Sep 16, 2023Observed: 10.61 ft at 6:00PM Sep 16, 2023Observed: 10.73 ft at 6:15PM Sep 16, 2023Observed: 10.56 ft at 6:30PM Sep 16, 2023Observed: 10.54 ft at 6:45PM Sep 16, 2023Observed: 10.75 ft at 7:00PM Sep 16, 2023Observed: 10.57 ft at 7:15PM Sep 16, 2023Observed: 10.64 ft at 7:30PM Sep 16, 2023Observed: 10.77 ft at 7:45PM Sep 16, 2023Observed: 10.63 ft at 8:00PM Sep 16, 2023Observed: 10.56 ft at 8:15PM Sep 16, 2023Observed: 10.62 ft at 8:30PM Sep 16, 2023Observed: 10.58 ft at 8:45PM Sep 16, 2023Observed: 10.62 ft at 9:00PM Sep 16, 2023Observed: 10.59 ft at 9:15PM Sep 16, 2023Observed: 10.76 ft at 9:30PM Sep 16, 2023Observed: 10.78 ft at 9:45PM Sep 16, 2023Observed: 10.82 ft at 11:00PM Sep 16, 2023Observed: 10.96 ft at 11:15PM Sep 16, 2023Observed: 10.86 ft at 11:30PM Sep 16, 2023Observed: 10.91 ft at 11:45PM Sep 16, 2023Observed: 10.67 ft at 12:00AM Sep 17, 2023Observed: 10.69 ft at 12:15AM Sep 17, 2023Observed: 10.68 ft at 12:30AM Sep 17, 2023Observed: 10.69 ft at 12:45AM Sep 17, 2023Observed: 10.65 ft at 1:00AM Sep 17, 2023Observed: 10.69 ft at 1:15AM Sep 17, 2023Observed: 10.72 ft at 1:30AM Sep 17, 2023Observed: 10.67 ft at 1:45AM Sep 17, 2023Observed: 10.67 ft at 2:00AM Sep 17, 2023Observed: 10.77 ft at 2:15AM Sep 17, 2023Observed: 10.79 ft at 2:30AM Sep 17, 2023Observed: 10.64 ft at 2:45AM Sep 17, 2023Observed: 10.63 ft at 3:00AM Sep 17, 2023Observed: 10.63 ft at 3:15AM Sep 17, 2023Observed: 10.63 ft at 3:30AM Sep 17, 2023Observed: 10.62 ft at 3:45AM Sep 17, 2023Observed: 10.61 ft at 4:00AM Sep 17, 2023Observed: 10.69 ft at 4:15AM Sep 17, 2023Observed: 10.62 ft at 4:30AM Sep 17, 2023Observed: 10.52 ft at 4:45AM Sep 17, 2023Observed: 10.48 ft at 5:00AM Sep 17, 2023Observed: 10.58 ft at 5:15AM Sep 17, 2023Observed: 10.63 ft at 5:30AM Sep 17, 2023Observed: 10.59 ft at 5:45AM Sep 17, 2023Observed: 10.59 ft at 6:00AM Sep 17, 2023Observed: 10.55 ft at 6:15AM Sep 17, 2023Observed: 10.6 ft at 6:30AM Sep 17, 2023Observed: 10.61 ft at 6:45AM Sep 17, 2023Observed: 10.59 ft at 7:00AM Sep 17, 2023Observed: 10.61 ft at 7:15AM Sep 17, 2023Observed: 10.61 ft at 7:30AM Sep 17, 2023Observed: 10.62 ft at 7:45AM Sep 17, 2023Observed: 10.61 ft at 8:00AM Sep 17, 2023Observed: 10.61 ft at 8:15AM Sep 17, 2023Observed: 10.6 ft at 8:30AM Sep 17, 2023Observed: 10.61 ft at 8:45AM Sep 17, 2023Observed: 10.59 ft at 9:00AM Sep 17, 2023Observed: 10.55 ft at 9:15AM Sep 17, 2023Observed: 10.57 ft at 9:30AM Sep 17, 2023Observed: 10.63 ft at 9:45AM Sep 17, 2023Observed: 10.67 ft at 10:00AM Sep 17, 2023Observed: 10.68 ft at 10:15AM Sep 17, 2023Observed: 10.81 ft at 10:30AM Sep 17, 2023Observed: 10.65 ft at 10:45AM Sep 17, 2023Observed: 10.67 ft at 11:00AM Sep 17, 2023Observed: 10.67 ft at 11:15AM Sep 17, 2023Observed: 10.67 ft at 11:30AM Sep 17, 2023Observed: 10.67 ft at 11:45AM Sep 17, 2023Observed: 10.67 ft at 12:00PM Sep 17, 2023Observed: 10.8 ft at 12:15PM Sep 17, 2023Observed: 10.69 ft at 12:30PM Sep 17, 2023Observed: 10.71 ft at 12:45PM Sep 17, 2023Observed: 10.63 ft at 1:00PM Sep 17, 2023Observed: 10.69 ft at 1:15PM Sep 17, 2023Observed: 10.69 ft at 1:30PM Sep 17, 2023Observed: 10.69 ft at 1:45PM Sep 17, 2023Observed: 10.69 ft at 2:00PM Sep 17, 2023Observed: 10.69 ft at 2:15PM Sep 17, 2023Observed: 10.7 ft at 2:30PM Sep 17, 2023Observed: 10.73 ft at 2:45PM Sep 17, 2023Observed: 10.71 ft at 3:00PM Sep 17, 2023Observed: 10.75 ft at 3:15PM Sep 17, 2023Observed: 10.77 ft at 3:30PM Sep 17, 2023Observed: 10.77 ft at 3:45PM Sep 17, 2023Observed: 10.77 ft at 4:00PM Sep 17, 2023Observed: 10.78 ft at 4:15PM Sep 17, 2023Observed: 10.78 ft at 4:30PM Sep 17, 2023Observed: 10.81 ft at 4:45PM Sep 17, 2023Observed: 10.8 ft at 5:00PM Sep 17, 2023Observed: 10.81 ft at 5:15PM Sep 17, 2023Observed: 10.81 ft at 5:30PM Sep 17, 2023Observed: 10.81 ft at 5:45PM Sep 17, 2023Observed: 10.97 ft at 6:00PM Sep 17, 2023Observed: 10.98 ft at 6:15PM Sep 17, 2023Observed: 10.83 ft at 6:30PM Sep 17, 2023Observed: 10.83 ft at 6:45PM Sep 17, 2023Observed: 10.84 ft at 7:00PM Sep 17, 2023Observed: 10.86 ft at 7:15PM Sep 17, 2023Observed: 10.88 ft at 7:30PM Sep 17, 2023Observed: 10.89 ft at 7:45PM Sep 17, 2023Observed: 10.92 ft at 8:00PM Sep 17, 2023Observed: 10.87 ft at 8:15PM Sep 17, 2023Observed: 10.89 ft at 8:30PM Sep 17, 2023Observed: 10.9 ft at 8:45PM Sep 17, 2023Observed: 10.9 ft at 9:00PM Sep 17, 2023Observed: 10.91 ft at 9:15PM Sep 17, 2023Observed: 11.16 ft at 9:30PM Sep 17, 2023Observed: 11.27 ft at 9:45PM Sep 17, 2023Observed: 11.47 ft at 10:00PM Sep 17, 2023Observed: 11.38 ft at 10:15PM Sep 17, 2023Observed: 11.43 ft at 10:30PM Sep 17, 2023Observed: 11.48 ft at 10:45PM Sep 17, 2023Observed: 11.52 ft at 11:00PM Sep 17, 2023Observed: 11.56 ft at 11:15PM Sep 17, 2023Observed: 11.61 ft at 11:30PM Sep 17, 2023Observed: 11.63 ft at 11:45PM Sep 17, 2023Observed: 11.67 ft at 12:00AM Sep 18, 2023Observed: 11.61 ft at 12:15AM Sep 18, 2023Observed: 11.59 ft at 12:30AM Sep 18, 2023Observed: 11.58 ft at 12:45AM Sep 18, 2023Observed: 11.59 ft at 1:00AM Sep 18, 2023Observed: 11.69 ft at 1:15AM Sep 18, 2023Observed: 11.79 ft at 1:30AM Sep 18, 2023Observed: 11.59 ft at 1:45AM Sep 18, 2023Observed: 11.74 ft at 2:00AM Sep 18, 2023Observed: 11.58 ft at 2:15AM Sep 18, 2023Observed: 11.59 ft at 2:30AM Sep 18, 2023Observed: 11.6 ft at 2:45AM Sep 18, 2023Observed: 11.59 ft at 3:00AM Sep 18, 2023Observed: 11.6 ft at 3:15AM Sep 18, 2023Observed: 11.6 ft at 3:30AM Sep 18, 2023Observed: 11.6 ft at 3:45AM Sep 18, 2023Observed: 11.6 ft at 4:00AM Sep 18, 2023Observed: 11.61 ft at 4:15AM Sep 18, 2023Observed: 11.61 ft at 4:30AM Sep 18, 2023Observed: 11.61 ft at 4:45AM Sep 18, 2023Observed: 11.63 ft at 6:00AM Sep 18, 2023Observed: 11.63 ft at 6:15AM Sep 18, 2023Observed: 11.64 ft at 6:30AM Sep 18, 2023Observed: 11.64 ft at 6:45AM Sep 18, 2023Observed: 11.64 ft at 7:00AM Sep 18, 2023Observed: 11.64 ft at 7:15AM Sep 18, 2023Observed: 11.65 ft at 7:30AM Sep 18, 2023Observed: 11.65 ft at 7:45AM Sep 18, 2023Observed: 11.65 ft at 8:00AM Sep 18, 2023Observed: 11.65 ft at 8:15AM Sep 18, 2023Observed: 11.82 ft at 8:30AM Sep 18, 2023Observed: 11.67 ft at 8:45AM Sep 18, 2023Observed: 11.81 ft at 9:00AM Sep 18, 2023Observed: 11.67 ft at 9:15AM Sep 18, 2023Observed: 11.67 ft at 9:30AM Sep 18, 2023Observed: 11.67 ft at 9:45AM Sep 18, 2023Observed: 11.67 ft at 10:00AM Sep 18, 2023Observed: 11.68 ft at 10:15AM Sep 18, 2023Observed: 11.9 ft at 10:30AM Sep 18, 2023Observed: 11.68 ft at 10:45AM Sep 18, 2023Observed: 11.7 ft at 11:00AM Sep 18, 2023Observed: 11.69 ft at 11:15AM Sep 18, 2023Observed: 11.69 ft at 11:30AM Sep 18, 2023Observed: 11.69 ft at 11:45AM Sep 18, 2023Observed: 11.7 ft at 12:00PM Sep 18, 2023Observed: 11.7 ft at 12:15PM Sep 18, 2023Observed: 11.7 ft at 12:30PM Sep 18, 2023Observed: 11.78 ft at 12:45PM Sep 18, 2023Observed: 11.74 ft at 1:00PM Sep 18, 2023Observed: 11.73 ft at 1:15PM Sep 18, 2023Observed: 11.81 ft at 1:30PM Sep 18, 2023Observed: 11.74 ft at 1:45PM Sep 18, 2023Observed: 11.86 ft at 2:00PM Sep 18, 2023Observed: 11.88 ft at 2:15PM Sep 18, 2023Observed: 11.93 ft at 2:30PM Sep 18, 2023Observed: 11.93 ft at 2:45PM Sep 18, 2023Observed: 11.95 ft at 3:00PM Sep 18, 2023Observed: 11.98 ft at 3:15PM Sep 18, 2023Observed: 12.12 ft at 3:30PM Sep 18, 2023Observed: 12.01 ft at 3:45PM Sep 18, 2023Observed: 12.03 ft at 4:00PM Sep 18, 2023Observed: 12.05 ft at 4:15PM Sep 18, 2023Observed: 12.09 ft at 4:30PM Sep 18, 2023Observed: 12.08 ft at 4:45PM Sep 18, 2023Observed: 12.1 ft at 5:00PM Sep 18, 2023Observed: 12.11 ft at 5:15PM Sep 18, 2023Observed: 12.13 ft at 5:30PM Sep 18, 2023Observed: 12.14 ft at 5:45PM Sep 18, 2023Observed: 12.15 ft at 6:00PM Sep 18, 2023Observed: 12.16 ft at 6:15PM Sep 18, 2023Highest Observation: 12.36 ft at 6:30PM Sep 18, 2023Observed: 12.2 ft at 6:45PM Sep 18, 2023Observed: 12.21 ft at 7:00PM Sep 18, 2023Observed: 12.2 ft at 7:15PM Sep 18, 2023Observed: 12.22 ft at 7:30PM Sep 18, 2023Observed: 12.23 ft at 7:45PM Sep 18, 2023Observed: 12.22 ft at 8:00PM Sep 18, 2023Observed: 12.23 ft at 8:15PM Sep 18, 2023Observed: 12.23 ft at 8:30PM Sep 18, 2023Observed: 12.24 ft at 8:45PM Sep 18, 2023Observed: 12.25 ft at 9:00PM Sep 18, 2023Observed: 12.26 ft at 9:15PM Sep 18, 2023Observed: 12.24 ft at 9:30PM Sep 18, 2023Observed: 12.14 ft at 9:45PM Sep 18, 2023Observed: 12.1 ft at 10:00PM Sep 18, 2023Observed: 12.09 ft at 10:15PM Sep 18, 2023Observed: 12.1 ft at 10:30PM Sep 18, 2023Observed: 12.2 ft at 10:45PM Sep 18, 2023Observed: 12.02 ft at 11:00PM Sep 18, 2023Observed: 12.02 ft at 11:15PM Sep 18, 2023Observed: 12 ft at 11:30PM Sep 18, 2023Observed: 12.15 ft at 11:45PM Sep 18, 2023Observed: 12 ft at 12:00AM Sep 19, 2023Observed: 11.95 ft at 12:15AM Sep 19, 2023Observed: 11.97 ft at 12:30AM Sep 19, 2023Observed: 12.1 ft at 12:45AM Sep 19, 2023Observed: 11.95 ft at 1:00AM Sep 19, 2023Observed: 11.94 ft at 1:15AM Sep 19, 2023Observed: 11.94 ft at 1:30AM Sep 19, 2023Observed: 11.94 ft at 1:45AM Sep 19, 2023Observed: 11.92 ft at 2:00AM Sep 19, 2023Observed: 12.07 ft at 2:15AM Sep 19, 2023Observed: 12.03 ft at 2:30AM Sep 19, 2023Observed: 12.06 ft at 2:45AM Sep 19, 2023Observed: 12.05 ft at 3:00AM Sep 19, 2023Observed: 12.04 ft at 3:15AM Sep 19, 2023Observed: 11.91 ft at 3:30AM Sep 19, 2023Observed: 12.05 ft at 3:45AM Sep 19, 2023Observed: 12.04 ft at 4:00AM Sep 19, 2023Observed: 12.01 ft at 4:15AM Sep 19, 2023Observed: 12.03 ft at 4:30AM Sep 19, 2023Observed: 12.02 ft at 4:45AM Sep 19, 2023Observed: 12.05 ft at 5:00AM Sep 19, 2023Observed: 12.01 ft at 5:15AM Sep 19, 2023Observed: 12.06 ft at 5:30AM Sep 19, 2023Observed: 12.01 ft at 5:45AM Sep 19, 2023Observed: 12.03 ft at 6:00AM Sep 19, 2023Observed: 12.02 ft at 6:15AM Sep 19, 2023Observed: 12.02 ft at 6:30AM Sep 19, 2023Observed: 12 ft at 6:45AM Sep 19, 2023Observed: 11.91 ft at 7:00AM Sep 19, 2023Observed: 12.03 ft at 7:15AM Sep 19, 2023Observed: 12.06 ft at 7:30AM Sep 19, 2023Observed: 12.05 ft at 7:45AM Sep 19, 2023Observed: 12.06 ft at 8:00AM Sep 19, 2023Observed: 12.02 ft at 8:15AM Sep 19, 2023Observed: 12.03 ft at 8:30AM Sep 19, 2023Observed: 12.04 ft at 8:45AM Sep 19, 2023Observed: 12.08 ft at 9:00AM Sep 19, 2023Observed: 11.94 ft at 9:15AM Sep 19, 2023Observed: 12.1 ft at 9:30AM Sep 19, 2023Observed: 12.06 ft at 9:45AM Sep 19, 2023Observed: 12.06 ft at 10:00AM Sep 19, 2023Observed: 12.04 ft at 10:15AM Sep 19, 2023Observed: 12.02 ft at 10:30AM Sep 19, 2023Observed: 12.05 ft at 10:45AM Sep 19, 2023Observed: 12.07 ft at 11:00AM Sep 19, 2023Observed: 11.95 ft at 11:15AM Sep 19, 2023Observed: 11.94 ft at 11:30AM Sep 19, 2023Observed: 11.95 ft at 11:45AM Sep 19, 2023Observed: 11.94 ft at 12:00PM Sep 19, 2023Observed: 11.94 ft at 12:15PM Sep 19, 2023Observed: 12.12 ft at 12:30PM Sep 19, 2023Observed: 11.94 ft at 12:45PM Sep 19, 2023Observed: 11.94 ft at 2:00PM Sep 19, 2023Observed: 11.93 ft at 2:15PM Sep 19, 2023Observed: 11.94 ft at 2:30PM Sep 19, 2023Observed: 11.92 ft at 2:45PM Sep 19, 2023Observed: 11.94 ft at 3:00PM Sep 19, 2023Observed: 11.94 ft at 3:15PM Sep 19, 2023Observed: 11.94 ft at 3:30PM Sep 19, 2023Observed: 12.03 ft at 3:45PM Sep 19, 2023Observed: 11.94 ft at 4:00PM Sep 19, 2023Observed: 11.94 ft at 4:15PM Sep 19, 2023Observed: 11.95 ft at 4:30PM Sep 19, 2023Observed: 12.09 ft at 4:45PM Sep 19, 2023Observed: 11.94 ft at 5:00PM Sep 19, 2023Observed: 12.06 ft at 5:15PM Sep 19, 2023Observed: 11.95 ft at 5:30PM Sep 19, 2023Observed: 12.07 ft at 5:45PM Sep 19, 2023Observed: 11.96 ft at 6:00PM Sep 19, 2023Observed: 12.11 ft at 6:15PM Sep 19, 2023Observed: 11.95 ft at 6:30PM Sep 19, 2023Observed: 12 ft at 6:45PM Sep 19, 2023Observed: 12.03 ft at 7:00PM Sep 19, 2023Observed: 11.97 ft at 7:15PM Sep 19, 2023Observed: 11.97 ft at 7:30PM Sep 19, 2023Observed: 11.98 ft at 7:45PM Sep 19, 2023Observed: 11.98 ft at 8:00PM Sep 19, 2023Observed: 11.98 ft at 8:15PM Sep 19, 2023Observed: 11.99 ft at 8:30PM Sep 19, 2023Observed: 12 ft at 8:45PM Sep 19, 2023Observed: 11.99 ft at 9:00PM Sep 19, 2023Observed: 12 ft at 9:15PM Sep 19, 2023Observed: 12 ft at 9:30PM Sep 19, 2023Observed: 12.01 ft at 9:45PM Sep 19, 2023Observed: 12.01 ft at 10:00PM Sep 19, 2023Observed: 12.02 ft at 10:15PM Sep 19, 2023Observed: 12.02 ft at 10:30PM Sep 19, 2023Observed: 12.02 ft at 10:45PM Sep 19, 2023Observed: 12.03 ft at 11:00PM Sep 19, 2023Observed: 12.03 ft at 11:15PM Sep 19, 2023Observed: 12.03 ft at 11:30PM Sep 19, 2023Observed: 12.03 ft at 11:45PM Sep 19, 2023Observed: 12.03 ft at 12:00AM Sep 20, 2023Observed: 12.03 ft at 12:15AM Sep 20, 2023Observed: 12.12 ft at 12:30AM Sep 20, 2023Observed: 12.03 ft at 12:45AM Sep 20, 2023Observed: 12.04 ft at 1:00AM Sep 20, 2023Observed: 11.99 ft at 1:15AM Sep 20, 2023Observed: 11.93 ft at 1:30AM Sep 20, 2023Observed: 11.89 ft at 1:45AM Sep 20, 2023Observed: 11.87 ft at 2:00AM Sep 20, 2023Observed: 11.87 ft at 2:15AM Sep 20, 2023Observed: 11.85 ft at 2:30AM Sep 20, 2023Observed: 11.85 ft at 2:45AM Sep 20, 2023Observed: 11.83 ft at 3:00AM Sep 20, 2023Observed: 11.82 ft at 3:15AM Sep 20, 2023Observed: 11.82 ft at 3:30AM Sep 20, 2023Observed: 11.81 ft at 3:45AM Sep 20, 2023Observed: 11.77 ft at 4:00AM Sep 20, 2023Observed: 11.76 ft at 4:15AM Sep 20, 2023Observed: 11.76 ft at 4:30AM Sep 20, 2023Observed: 11.73 ft at 4:45AM Sep 20, 2023Observed: 11.71 ft at 5:00AM Sep 20, 2023Observed: 11.68 ft at 5:15AM Sep 20, 2023Observed: 11.7 ft at 5:30AM Sep 20, 2023Observed: 11.67 ft at 5:45AM Sep 20, 2023Observed: 11.64 ft at 6:00AM Sep 20, 2023Observed: 11.6 ft at 6:15AM Sep 20, 2023Observed: 11.61 ft at 6:30AM Sep 20, 2023Observed: 11.61 ft at 6:45AM Sep 20, 2023Observed: 11.62 ft at 7:00AM Sep 20, 2023Observed: 11.54 ft at 7:15AM Sep 20, 2023Observed: 11.56 ft at 7:30AM Sep 20, 2023Observed: 11.55 ft at 7:45AM Sep 20, 2023Observed: 11.58 ft at 8:00AM Sep 20, 2023Observed: 11.54 ft at 8:15AM Sep 20, 2023Observed: 11.52 ft at 8:30AM Sep 20, 2023Observed: 11.54 ft at 8:45AM Sep 20, 2023Observed: 11.56 ft at 9:00AM Sep 20, 2023Observed: 11.49 ft at 9:15AM Sep 20, 2023Observed: 11.59 ft at 9:30AM Sep 20, 2023Observed: 11.52 ft at 9:45AM Sep 20, 2023Observed: 11.47 ft at 10:00AM Sep 20, 2023Observed: 11.47 ft at 10:15AM Sep 20, 2023Observed: 11.52 ft at 10:30AM Sep 20, 2023Observed: 11.52 ft at 10:45AM Sep 20, 2023Observed: 11.5 ft at 11:00AM Sep 20, 2023Observed: 11.43 ft at 11:15AM Sep 20, 2023Observed: 11.47 ft at 11:30AM Sep 20, 2023Observed: 11.48 ft at 11:45AM Sep 20, 2023Observed: 11.57 ft at 12:00PM Sep 20, 2023Observed: 11.67 ft at 12:15PM Sep 20, 2023Observed: 11.45 ft at 12:30PM Sep 20, 2023Observed: 11.38 ft at 12:45PM Sep 20, 2023Observed: 11.38 ft at 1:00PM Sep 20, 2023Observed: 11.35 ft at 1:15PM Sep 20, 2023Observed: 11.37 ft at 1:30PM Sep 20, 2023Observed: 11.42 ft at 1:45PM Sep 20, 2023Observed: 11.58 ft at 2:00PM Sep 20, 2023Observed: 11.36 ft at 2:15PM Sep 20, 2023Observed: 11.37 ft at 2:30PM Sep 20, 2023Observed: 11.33 ft at 2:45PM Sep 20, 2023Observed: 11.37 ft at 3:00PM Sep 20, 2023Observed: 11.35 ft at 3:15PM Sep 20, 2023Observed: 11.42 ft at 3:30PM Sep 20, 2023Observed: 11.45 ft at 3:45PM Sep 20, 2023Observed: 11.38 ft at 4:00PM Sep 20, 2023Observed: 11.5 ft at 4:15PM Sep 20, 2023Observed: 11.37 ft at 4:30PM Sep 20, 2023Observed: 11.36 ft at 4:45PM Sep 20, 2023Observed: 11.44 ft at 5:00PM Sep 20, 2023Observed: 11.35 ft at 5:15PM Sep 20, 2023Observed: 11.31 ft at 5:30PM Sep 20, 2023Observed: 11.3 ft at 5:45PM Sep 20, 2023Observed: 11.35 ft at 6:00PM Sep 20, 2023Observed: 11.34 ft at 6:15PM Sep 20, 2023Observed: 11.45 ft at 6:30PM Sep 20, 2023Observed: 11.57 ft at 6:45PM Sep 20, 2023Observed: 11.39 ft at 7:00PM Sep 20, 2023Observed: 11.37 ft at 7:15PM Sep 20, 2023Observed: 11.36 ft at 7:30PM Sep 20, 2023Observed: 11.32 ft at 7:45PM Sep 20, 2023Observed: 11.27 ft at 8:00PM Sep 20, 2023Observed: 11.31 ft at 8:15PM Sep 20, 2023Observed: 11.26 ft at 8:30PM Sep 20, 2023Observed: 11.26 ft at 8:45PM Sep 20, 2023Observed: 11.28 ft at 9:00PM Sep 20, 2023Observed: 11.29 ft at 9:15PM Sep 20, 2023Observed: 11.3 ft at 9:30PM Sep 20, 2023Observed: 11.29 ft at 9:45PM Sep 20, 2023Observed: 11.31 ft at 10:00PM Sep 20, 2023Observed: 11.32 ft at 10:15PM Sep 20, 2023Observed: 11.32 ft at 10:30PM Sep 20, 2023Observed: 11.31 ft at 10:45PM Sep 20, 2023Observed: 11.34 ft at 11:00PM Sep 20, 2023Observed: 11.34 ft at 11:15PM Sep 20, 2023Observed: 11.35 ft at 11:30PM Sep 20, 2023Observed: 11.34 ft at 11:45PM Sep 20, 2023Observed: 11.33 ft at 12:00AM Sep 21, 2023Observed: 11.35 ft at 12:15AM Sep 21, 2023Observed: 11.35 ft at 12:30AM Sep 21, 2023Observed: 11.35 ft at 12:45AM Sep 21, 2023Observed: 11.34 ft at 1:00AM Sep 21, 2023Observed: 11.34 ft at 1:15AM Sep 21, 2023Observed: 11.34 ft at 1:30AM Sep 21, 2023Observed: 11.34 ft at 1:45AM Sep 21, 2023Observed: 11.35 ft at 2:00AM Sep 21, 2023Observed: 11.34 ft at 2:15AM Sep 21, 2023Observed: 11.34 ft at 2:30AM Sep 21, 2023Observed: 11.34 ft at 2:45AM Sep 21, 2023Observed: 11.33 ft at 3:00AM Sep 21, 2023Observed: 11.34 ft at 3:15AM Sep 21, 2023Observed: 11.34 ft at 3:30AM Sep 21, 2023Observed: 11.34 ft at 3:45AM Sep 21, 2023Observed: 11.41 ft at 4:00AM Sep 21, 2023Observed: 11.44 ft at 4:15AM Sep 21, 2023Observed: 11.48 ft at 4:30AM Sep 21, 2023Observed: 11.49 ft at 4:45AM Sep 21, 2023Observed: 11.5 ft at 5:00AM Sep 21, 2023Observed: 11.51 ft at 5:15AM Sep 21, 2023Observed: 11.52 ft at 5:30AM Sep 21, 2023Observed: 11.54 ft at 5:45AM Sep 21, 2023Observed: 11.55 ft at 6:00AM Sep 21, 2023Observed: 11.56 ft at 6:15AM Sep 21, 2023Observed: 11.57 ft at 6:30AM Sep 21, 2023Observed: 11.58 ft at 6:45AM Sep 21, 2023Observed: 11.59 ft at 7:00AM Sep 21, 2023Observed: 11.6 ft at 7:15AM Sep 21, 2023Observed: 11.6 ft at 7:30AM Sep 21, 2023Observed: 11.6 ft at 7:45AM Sep 21, 2023Observed: 11.61 ft at 8:00AM Sep 21, 2023Observed: 11.61 ft at 8:15AM Sep 21, 2023Observed: 11.62 ft at 8:30AM Sep 21, 2023Observed: 11.63 ft at 8:45AM Sep 21, 2023Observed: 11.63 ft at 10:00AM Sep 21, 2023Observed: 11.63 ft at 10:15AM Sep 21, 2023Observed: 11.63 ft at 10:30AM Sep 21, 2023Observed: 11.63 ft at 10:45AM Sep 21, 2023Observed: 11.63 ft at 11:00AM Sep 21, 2023Observed: 11.65 ft at 11:15AM Sep 21, 2023Observed: 11.62 ft at 11:30AM Sep 21, 2023Observed: 11.63 ft at 11:45AM Sep 21, 2023Observed: 11.63 ft at 12:00PM Sep 21, 2023Observed: 11.63 ft at 12:15PM Sep 21, 2023Observed: 11.66 ft at 12:30PM Sep 21, 2023Observed: 11.64 ft at 12:45PM Sep 21, 2023Highest Forecast: 11.9 ft 7:00PM Sep 21, 2023Forecast: 11.8 ft 1:00AM Sep 22, 2023Forecast: 11.7 ft 7:00AM Sep 22, 2023Forecast: 11.6 ft 1:00PM Sep 22, 2023Forecast: 11.5 ft 7:00PM Sep 22, 2023Forecast: 11.4 ft 1:00AM Sep 23, 2023Forecast: 11.3 ft 7:00AM Sep 23, 2023Forecast: 11.2 ft 1:00PM Sep 23, 2023Forecast: 11.2 ft 7:00PM Sep 23, 2023Forecast: 11.2 ft 1:00AM Sep 24, 2023Forecast: 11.2 ft 7:00AM Sep 24, 2023Forecast: 11.2 ft 1:00PM Sep 24, 2023Forecast: 11.2 ft 7:00PM Sep 24, 2023Forecast: 11.2 ft 1:00AM Sep 25, 2023Forecast: 11.2 ft 7:00AM Sep 25, 2023Forecast: 11.2 ft 1:00PM Sep 25, 2023Forecast: 11.2 ft 7:00PM Sep 25, 2023Forecast: 11.2 ft 1:00AM Sep 26, 2023Forecast: 11.1 ft 7:00AM Sep 26, 2023Forecast: 11.1 ft 1:00PM Sep 26, 2023Forecast: 11.1 ft 7:00PM Sep 26, 2023Forecast: 11.1 ft 1:00AM Sep 27, 2023Forecast: 11.1 ft 7:00AM Sep 27, 2023Forecast: 11.1 ft 1:00PM Sep 27, 2023Forecast: 11.1 ft 7:00PM Sep 27, 2023Forecast: 11.1 ft 1:00AM Sep 28, 2023Forecast: 11.1 ft 7:00AM Sep 28, 2023US Army Corps of EngineersLSLI2(plotting HGIRG) Graph Created (1:40PM Sep 21, 2023)ObservedForecast (issued 9:54AM Sep 21)Latest observed value: 11.64 ft at 12:45 PM CDT 21-Sep-2023. Flood Stage is 20 ft
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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 24 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Illinois River near La Salle are issued routinely year-round.

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Upstream Gauge - at Starved Rock Lock (tailwater) Upstream Gauge Downstream Gauge Downstream Gauge - near Henry
Flood Categories (in feet)
Major Flood Stage: 31
Moderate Flood Stage: 27
Flood Stage: 20
Action Stage: 19
Low Stage (in feet): 8.7

Historic Crests
(1) 34.44 ft on 04/20/2013
(2) 33.79 ft on 09/16/2008
(3) 33.14 ft on 05/20/2020
(4) 32.14 ft on 05/03/2019
(5) 32.05 ft on 12/05/1982
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 33.14 ft on 05/20/2020
(2) 26.54 ft on 05/01/2020
(3) 23.69 ft on 01/13/2020
(4) 24.56 ft on 11/01/2019
(5) 26.77 ft on 09/30/2019
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.80 ft on 08/28/1868
(2) 10.02 ft on 12/14/2010
(3) 10.05 ft on 02/03/2011
(4) 10.07 ft on 09/27/2012
(5) 10.14 ft on 01/06/2014
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
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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
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34.5 North Utica Village Hall, police department, and wastewater treatment plant property are threatened.
33 A couple structures are threatened near the river in downtown La Salle.
32 Numerous industrial and utility properties are threatened along Water Street near downtown LaSalle. A few residences threatened in North Utica. IL-178 (Clark Street) threatened in North Utica.
31 A couple structures threatened in North Utica.
30 La Salle water pumping station property is threatened.
28.5 Water Street is threatened in Peru.
28 Dee Bennet Road is threatened between Ottawa and Utica.
22 Lower parking lot at Starved Rock State Park is inundated east of La Salle. High water levels begin to impact shipping interests along the river.
20 Agricultural areas in La Salle, Spring Valley, and Peru are inundated.
17.5 Low-lying agricultural land near the river is inundated.
Low Water Impacts Collapse
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8.7 Low water levels begin to impact shipping interests along the river.
About This Location Collapse

Latitude: 41.323611° N, Longitude: 89.110833° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 20 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 29 430.0 450.0 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:
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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
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Romeoville, IL 60446
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