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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
Thorn Creek at Thornton Stage (ft)Flow (kcfs)Observed: 2.9 ft at 6:15PM Sep 14, 2023Observed: 2.9 ft at 6:30PM Sep 14, 2023Observed: 2.91 ft at 6:45PM Sep 14, 2023Observed: 2.92 ft at 7:00PM Sep 14, 2023Observed: 2.9 ft at 7:15PM Sep 14, 2023Observed: 2.9 ft at 7:30PM Sep 14, 2023Observed: 2.92 ft at 7:45PM Sep 14, 2023Observed: 2.9 ft at 8:00PM Sep 14, 2023Observed: 2.9 ft at 8:15PM Sep 14, 2023Observed: 2.9 ft at 8:30PM Sep 14, 2023Observed: 2.9 ft at 8:45PM Sep 14, 2023Observed: 2.89 ft at 9:00PM Sep 14, 2023Observed: 2.88 ft at 9:15PM Sep 14, 2023Observed: 2.89 ft at 9:30PM Sep 14, 2023Observed: 2.89 ft at 9:45PM Sep 14, 2023Observed: 2.89 ft at 10:00PM Sep 14, 2023Observed: 2.89 ft at 10:15PM Sep 14, 2023Observed: 2.89 ft at 10:30PM Sep 14, 2023Observed: 2.88 ft at 10:45PM Sep 14, 2023Observed: 2.9 ft at 11:00PM Sep 14, 2023Observed: 2.88 ft at 11:15PM Sep 14, 2023Observed: 2.9 ft at 11:30PM Sep 14, 2023Observed: 2.89 ft at 11:45PM Sep 14, 2023Observed: 2.88 ft at 12:00AM Sep 15, 2023Observed: 2.88 ft at 12:15AM Sep 15, 2023Observed: 2.88 ft at 12:30AM Sep 15, 2023Observed: 2.89 ft at 12:45AM Sep 15, 2023Observed: 2.88 ft at 1:00AM Sep 15, 2023Observed: 2.88 ft at 1:30AM Sep 15, 2023Observed: 2.88 ft at 1:45AM Sep 15, 2023Observed: 2.89 ft at 2:00AM Sep 15, 2023Observed: 2.89 ft at 2:15AM Sep 15, 2023Observed: 2.89 ft at 2:30AM Sep 15, 2023Observed: 2.88 ft at 2:45AM Sep 15, 2023Observed: 2.88 ft at 3:00AM Sep 15, 2023Observed: 2.88 ft at 3:15AM Sep 15, 2023Observed: 2.87 ft at 3:30AM Sep 15, 2023Observed: 2.88 ft at 3:45AM Sep 15, 2023Observed: 2.89 ft at 4:00AM Sep 15, 2023Observed: 2.88 ft at 4:15AM Sep 15, 2023Observed: 2.89 ft at 4:30AM Sep 15, 2023Observed: 2.86 ft at 4:45AM Sep 15, 2023Observed: 2.87 ft at 5:15AM Sep 15, 2023Observed: 2.86 ft at 5:45AM Sep 15, 2023Observed: 2.87 ft at 6:00AM Sep 15, 2023Observed: 2.88 ft at 6:15AM Sep 15, 2023Observed: 2.86 ft at 6:30AM Sep 15, 2023Observed: 2.85 ft at 6:45AM Sep 15, 2023Observed: 2.86 ft at 7:00AM Sep 15, 2023Observed: 2.85 ft at 7:15AM Sep 15, 2023Observed: 2.86 ft at 7:30AM Sep 15, 2023Observed: 2.84 ft at 7:45AM Sep 15, 2023Observed: 2.84 ft at 8:00AM Sep 15, 2023Observed: 2.83 ft at 8:15AM Sep 15, 2023Observed: 2.84 ft at 8:30AM Sep 15, 2023Observed: 2.83 ft at 8:45AM Sep 15, 2023Observed: 2.84 ft at 9:15AM Sep 15, 2023Observed: 2.82 ft at 9:30AM Sep 15, 2023Observed: 2.83 ft at 9:45AM Sep 15, 2023Observed: 2.82 ft at 10:00AM Sep 15, 2023Observed: 2.82 ft at 10:15AM Sep 15, 2023Observed: 2.82 ft at 10:30AM Sep 15, 2023Observed: 2.82 ft at 10:45AM Sep 15, 2023Observed: 2.83 ft at 11:00AM Sep 15, 2023Observed: 2.82 ft at 11:15AM Sep 15, 2023Observed: 2.82 ft at 11:30AM Sep 15, 2023Observed: 2.82 ft at 11:45AM Sep 15, 2023Observed: 2.82 ft at 12:00PM Sep 15, 2023Observed: 2.81 ft at 12:15PM Sep 15, 2023Observed: 2.82 ft at 12:30PM Sep 15, 2023Observed: 2.81 ft at 12:45PM Sep 15, 2023Observed: 2.82 ft at 1:00PM Sep 15, 2023Observed: 2.82 ft at 1:15PM Sep 15, 2023Observed: 2.82 ft at 1:30PM Sep 15, 2023Observed: 2.82 ft at 1:45PM Sep 15, 2023Observed: 2.82 ft at 2:00PM Sep 15, 2023Observed: 2.81 ft at 2:15PM Sep 15, 2023Observed: 2.83 ft at 2:30PM Sep 15, 2023Observed: 2.83 ft at 2:45PM Sep 15, 2023Observed: 2.82 ft at 3:00PM Sep 15, 2023Observed: 2.84 ft at 3:15PM Sep 15, 2023Observed: 2.83 ft at 3:30PM Sep 15, 2023Observed: 2.84 ft at 3:45PM Sep 15, 2023Observed: 2.83 ft at 4:00PM Sep 15, 2023Observed: 2.84 ft at 4:15PM Sep 15, 2023Observed: 2.84 ft at 4:30PM Sep 15, 2023Observed: 2.82 ft at 4:45PM Sep 15, 2023Observed: 2.83 ft at 5:00PM Sep 15, 2023Observed: 2.84 ft at 5:15PM Sep 15, 2023Observed: 2.85 ft at 5:30PM Sep 15, 2023Observed: 2.86 ft at 5:45PM Sep 15, 2023Observed: 2.85 ft at 6:00PM Sep 15, 2023Observed: 2.85 ft at 6:30PM Sep 15, 2023Observed: 2.83 ft at 6:45PM Sep 15, 2023Observed: 2.85 ft at 7:00PM Sep 15, 2023Observed: 2.84 ft at 7:15PM Sep 15, 2023Observed: 2.83 ft at 7:30PM Sep 15, 2023Observed: 2.84 ft at 7:45PM Sep 15, 2023Observed: 2.83 ft at 8:00PM Sep 15, 2023Observed: 2.84 ft at 8:15PM Sep 15, 2023Observed: 2.83 ft at 8:30PM Sep 15, 2023Observed: 2.84 ft at 8:45PM Sep 15, 2023Observed: 2.83 ft at 9:00PM Sep 15, 2023Observed: 2.84 ft at 9:15PM Sep 15, 2023Observed: 2.82 ft at 9:30PM Sep 15, 2023Observed: 2.83 ft at 9:45PM Sep 15, 2023Observed: 2.83 ft at 10:00PM Sep 15, 2023Observed: 2.83 ft at 10:15PM Sep 15, 2023Observed: 2.83 ft at 10:30PM Sep 15, 2023Observed: 2.83 ft at 10:45PM Sep 15, 2023Observed: 2.83 ft at 11:00PM Sep 15, 2023Observed: 2.83 ft at 11:15PM Sep 15, 2023Observed: 2.82 ft at 11:30PM Sep 15, 2023Observed: 2.82 ft at 11:45PM Sep 15, 2023Observed: 2.82 ft at 12:00AM Sep 16, 2023Observed: 2.83 ft at 12:15AM Sep 16, 2023Observed: 2.83 ft at 12:30AM Sep 16, 2023Observed: 2.82 ft at 12:45AM Sep 16, 2023Observed: 2.82 ft at 1:00AM Sep 16, 2023Observed: 2.82 ft at 1:15AM Sep 16, 2023Observed: 2.83 ft at 1:30AM Sep 16, 2023Observed: 2.82 ft at 1:45AM Sep 16, 2023Observed: 2.84 ft at 2:00AM Sep 16, 2023Observed: 2.82 ft at 2:15AM Sep 16, 2023Observed: 2.82 ft at 2:30AM Sep 16, 2023Observed: 2.82 ft at 3:00AM Sep 16, 2023Observed: 2.82 ft at 3:15AM Sep 16, 2023Observed: 2.83 ft at 3:30AM Sep 16, 2023Observed: 2.82 ft at 3:45AM Sep 16, 2023Observed: 2.81 ft at 4:00AM Sep 16, 2023Observed: 2.82 ft at 4:15AM Sep 16, 2023Observed: 2.81 ft at 4:30AM Sep 16, 2023Observed: 2.82 ft at 4:45AM Sep 16, 2023Observed: 2.82 ft at 5:00AM Sep 16, 2023Observed: 2.8 ft at 5:15AM Sep 16, 2023Observed: 2.8 ft at 5:30AM Sep 16, 2023Observed: 2.81 ft at 5:45AM Sep 16, 2023Observed: 2.8 ft at 6:00AM Sep 16, 2023Observed: 2.81 ft at 6:15AM Sep 16, 2023Observed: 2.8 ft at 6:30AM Sep 16, 2023Observed: 2.79 ft at 6:45AM Sep 16, 2023Observed: 2.8 ft at 7:00AM Sep 16, 2023Observed: 2.8 ft at 7:15AM Sep 16, 2023Observed: 2.8 ft at 7:30AM Sep 16, 2023Observed: 2.8 ft at 7:45AM Sep 16, 2023Observed: 2.79 ft at 8:00AM Sep 16, 2023Observed: 2.79 ft at 8:15AM Sep 16, 2023Observed: 2.8 ft at 8:30AM Sep 16, 2023Observed: 2.78 ft at 8:45AM Sep 16, 2023Observed: 2.8 ft at 9:00AM Sep 16, 2023Observed: 2.79 ft at 9:15AM Sep 16, 2023Observed: 2.79 ft at 9:30AM Sep 16, 2023Observed: 2.79 ft at 9:45AM Sep 16, 2023Observed: 2.79 ft at 10:00AM Sep 16, 2023Observed: 2.78 ft at 10:15AM Sep 16, 2023Observed: 2.78 ft at 10:30AM Sep 16, 2023Observed: 2.78 ft at 10:45AM Sep 16, 2023Observed: 2.78 ft at 11:00AM Sep 16, 2023Observed: 2.77 ft at 11:15AM Sep 16, 2023Observed: 2.78 ft at 11:30AM Sep 16, 2023Observed: 2.78 ft at 11:45AM Sep 16, 2023Observed: 2.79 ft at 12:00PM Sep 16, 2023Observed: 2.78 ft at 12:15PM Sep 16, 2023Observed: 2.78 ft at 12:30PM Sep 16, 2023Observed: 2.78 ft at 12:45PM Sep 16, 2023Observed: 2.78 ft at 1:15PM Sep 16, 2023Observed: 2.77 ft at 1:30PM Sep 16, 2023Observed: 2.79 ft at 1:45PM Sep 16, 2023Observed: 2.77 ft at 2:00PM Sep 16, 2023Observed: 2.77 ft at 2:15PM Sep 16, 2023Observed: 2.77 ft at 2:30PM Sep 16, 2023Observed: 2.79 ft at 2:45PM Sep 16, 2023Observed: 2.78 ft at 3:00PM Sep 16, 2023Observed: 2.78 ft at 3:15PM Sep 16, 2023Observed: 2.78 ft at 3:30PM Sep 16, 2023Observed: 2.79 ft at 3:45PM Sep 16, 2023Observed: 2.79 ft at 4:00PM Sep 16, 2023Observed: 2.79 ft at 4:15PM Sep 16, 2023Observed: 2.79 ft at 4:45PM Sep 16, 2023Observed: 2.79 ft at 5:00PM Sep 16, 2023Observed: 2.79 ft at 5:15PM Sep 16, 2023Observed: 2.81 ft at 5:30PM Sep 16, 2023Observed: 2.79 ft at 5:45PM Sep 16, 2023Observed: 2.81 ft at 6:00PM Sep 16, 2023Observed: 2.8 ft at 6:15PM Sep 16, 2023Observed: 2.8 ft at 6:30PM Sep 16, 2023Observed: 2.79 ft at 6:45PM Sep 16, 2023Observed: 2.79 ft at 7:00PM Sep 16, 2023Observed: 2.8 ft at 7:15PM Sep 16, 2023Observed: 2.81 ft at 7:30PM Sep 16, 2023Observed: 2.78 ft at 7:45PM Sep 16, 2023Observed: 2.79 ft at 8:00PM Sep 16, 2023Observed: 2.79 ft at 8:15PM Sep 16, 2023Observed: 2.8 ft at 8:30PM Sep 16, 2023Observed: 2.8 ft at 8:45PM Sep 16, 2023Observed: 2.79 ft at 9:00PM Sep 16, 2023Observed: 2.79 ft at 9:15PM Sep 16, 2023Observed: 2.78 ft at 9:30PM Sep 16, 2023Observed: 2.78 ft at 9:45PM Sep 16, 2023Observed: 2.8 ft at 10:00PM Sep 16, 2023Observed: 2.79 ft at 10:15PM Sep 16, 2023Observed: 2.79 ft at 10:30PM Sep 16, 2023Observed: 2.78 ft at 11:00PM Sep 16, 2023Observed: 2.78 ft at 11:15PM Sep 16, 2023Observed: 2.78 ft at 11:30PM Sep 16, 2023Observed: 2.78 ft at 11:45PM Sep 16, 2023Observed: 2.78 ft at 12:00AM Sep 17, 2023Observed: 2.77 ft at 12:15AM Sep 17, 2023Observed: 2.78 ft at 12:30AM Sep 17, 2023Observed: 2.78 ft at 12:45AM Sep 17, 2023Observed: 2.78 ft at 1:00AM Sep 17, 2023Observed: 2.77 ft at 1:15AM Sep 17, 2023Observed: 2.77 ft at 1:30AM Sep 17, 2023Observed: 2.77 ft at 1:45AM Sep 17, 2023Observed: 2.77 ft at 2:00AM Sep 17, 2023Observed: 2.77 ft at 2:15AM Sep 17, 2023Observed: 2.78 ft at 2:45AM Sep 17, 2023Observed: 2.77 ft at 3:00AM Sep 17, 2023Observed: 2.77 ft at 3:15AM Sep 17, 2023Observed: 2.77 ft at 3:30AM Sep 17, 2023Observed: 2.77 ft at 3:45AM Sep 17, 2023Observed: 2.77 ft at 4:00AM Sep 17, 2023Observed: 2.78 ft at 4:15AM Sep 17, 2023Observed: 2.77 ft at 4:30AM Sep 17, 2023Observed: 2.87 ft at 4:45AM Sep 17, 2023Observed: 2.99 ft at 5:00AM Sep 17, 2023Observed: 2.97 ft at 5:15AM Sep 17, 2023Observed: 2.94 ft at 5:30AM Sep 17, 2023Observed: 2.88 ft at 5:45AM Sep 17, 2023Observed: 2.9 ft at 6:00AM Sep 17, 2023Observed: 2.9 ft at 6:15AM Sep 17, 2023Observed: 2.94 ft at 6:30AM Sep 17, 2023Observed: 2.98 ft at 6:45AM Sep 17, 2023Observed: 3.09 ft at 7:00AM Sep 17, 2023Observed: 3.24 ft at 7:15AM Sep 17, 2023Observed: 3.39 ft at 7:30AM Sep 17, 2023Observed: 3.51 ft at 7:45AM Sep 17, 2023Observed: 3.6 ft at 8:00AM Sep 17, 2023Observed: 3.7 ft at 8:15AM Sep 17, 2023Observed: 3.75 ft at 8:30AM Sep 17, 2023Observed: 3.81 ft at 8:45AM Sep 17, 2023Observed: 3.86 ft at 9:00AM Sep 17, 2023Observed: 3.88 ft at 9:15AM Sep 17, 2023Observed: 3.89 ft at 9:30AM Sep 17, 2023Observed: 3.92 ft at 9:45AM Sep 17, 2023Observed: 3.97 ft at 10:00AM Sep 17, 2023Observed: 3.95 ft at 10:15AM Sep 17, 2023Observed: 3.99 ft at 10:30AM Sep 17, 2023Observed: 4 ft at 10:45AM Sep 17, 2023Observed: 4.1 ft at 11:00AM Sep 17, 2023Observed: 4.17 ft at 11:15AM Sep 17, 2023Observed: 4.23 ft at 11:30AM Sep 17, 2023Observed: 4.38 ft at 11:45AM Sep 17, 2023Observed: 4.5 ft at 12:00PM Sep 17, 2023Observed: 4.81 ft at 12:15PM Sep 17, 2023Observed: 5.04 ft at 12:30PM Sep 17, 2023Observed: 5.28 ft at 12:45PM Sep 17, 2023Observed: 5.44 ft at 1:00PM Sep 17, 2023Observed: 5.68 ft at 1:15PM Sep 17, 2023Observed: 5.87 ft at 1:30PM Sep 17, 2023Observed: 6.07 ft at 1:45PM Sep 17, 2023Observed: 6.26 ft at 2:00PM Sep 17, 2023Observed: 6.43 ft at 2:15PM Sep 17, 2023Observed: 6.68 ft at 2:30PM Sep 17, 2023Observed: 6.81 ft at 2:45PM Sep 17, 2023Observed: 6.73 ft at 3:00PM Sep 17, 2023Observed: 6.54 ft at 3:15PM Sep 17, 2023Observed: 6.51 ft at 3:30PM Sep 17, 2023Observed: 6.45 ft at 3:45PM Sep 17, 2023Observed: 6.49 ft at 4:00PM Sep 17, 2023Observed: 6.52 ft at 4:15PM Sep 17, 2023Observed: 6.54 ft at 4:30PM Sep 17, 2023Observed: 6.58 ft at 4:45PM Sep 17, 2023Observed: 6.62 ft at 5:00PM Sep 17, 2023Observed: 6.66 ft at 5:15PM Sep 17, 2023Observed: 6.65 ft at 5:30PM Sep 17, 2023Observed: 6.74 ft at 5:45PM Sep 17, 2023Observed: 6.75 ft at 6:00PM Sep 17, 2023Observed: 6.75 ft at 6:15PM Sep 17, 2023Observed: 6.75 ft at 6:30PM Sep 17, 2023Observed: 6.81 ft at 6:45PM Sep 17, 2023Observed: 6.84 ft at 7:00PM Sep 17, 2023Highest Observation: 6.87 ft at 7:15PM Sep 17, 2023Observed: 6.83 ft at 7:30PM Sep 17, 2023Observed: 6.82 ft at 7:45PM Sep 17, 2023Observed: 6.84 ft at 8:00PM Sep 17, 2023Observed: 6.78 ft at 8:15PM Sep 17, 2023Observed: 6.78 ft at 8:30PM Sep 17, 2023Observed: 6.78 ft at 8:45PM Sep 17, 2023Observed: 6.8 ft at 9:00PM Sep 17, 2023Observed: 6.71 ft at 9:15PM Sep 17, 2023Observed: 6.66 ft at 9:30PM Sep 17, 2023Observed: 6.58 ft at 9:45PM Sep 17, 2023Observed: 6.42 ft at 10:30PM Sep 17, 2023Observed: 6.38 ft at 10:45PM Sep 17, 2023Observed: 6.31 ft at 11:00PM Sep 17, 2023Observed: 6.24 ft at 11:15PM Sep 17, 2023Observed: 6.14 ft at 11:30PM Sep 17, 2023Observed: 6.06 ft at 11:45PM Sep 17, 2023Observed: 5.97 ft at 12:15AM Sep 18, 2023Observed: 5.89 ft at 12:30AM Sep 18, 2023Observed: 5.79 ft at 12:45AM Sep 18, 2023Observed: 5.8 ft at 1:00AM Sep 18, 2023Observed: 5.75 ft at 1:15AM Sep 18, 2023Observed: 5.68 ft at 1:30AM Sep 18, 2023Observed: 5.61 ft at 1:45AM Sep 18, 2023Observed: 5.53 ft at 2:00AM Sep 18, 2023Observed: 5.46 ft at 2:15AM Sep 18, 2023Observed: 5.4 ft at 2:30AM Sep 18, 2023Observed: 5.33 ft at 2:45AM Sep 18, 2023Observed: 5.28 ft at 3:00AM Sep 18, 2023Observed: 5.26 ft at 3:15AM Sep 18, 2023Observed: 5.25 ft at 3:30AM Sep 18, 2023Observed: 5.23 ft at 3:45AM Sep 18, 2023Observed: 5.17 ft at 4:00AM Sep 18, 2023Observed: 5.07 ft at 4:15AM Sep 18, 2023Observed: 5.02 ft at 4:30AM Sep 18, 2023Observed: 4.96 ft at 4:45AM Sep 18, 2023Observed: 4.91 ft at 5:00AM Sep 18, 2023Observed: 4.86 ft at 5:15AM Sep 18, 2023Observed: 4.85 ft at 5:30AM Sep 18, 2023Observed: 4.71 ft at 6:00AM Sep 18, 2023Observed: 4.64 ft at 6:15AM Sep 18, 2023Observed: 4.6 ft at 6:30AM Sep 18, 2023Observed: 4.64 ft at 6:45AM Sep 18, 2023Observed: 4.67 ft at 7:00AM Sep 18, 2023Observed: 4.66 ft at 7:15AM Sep 18, 2023Observed: 4.63 ft at 7:30AM Sep 18, 2023Observed: 4.66 ft at 7:45AM Sep 18, 2023Observed: 4.62 ft at 8:00AM Sep 18, 2023Observed: 4.56 ft at 8:15AM Sep 18, 2023Observed: 4.51 ft at 8:30AM Sep 18, 2023Observed: 4.45 ft at 8:45AM Sep 18, 2023Observed: 4.46 ft at 9:00AM Sep 18, 2023Observed: 4.44 ft at 9:15AM Sep 18, 2023Observed: 4.42 ft at 9:30AM Sep 18, 2023Observed: 4.39 ft at 9:45AM Sep 18, 2023Observed: 4.36 ft at 10:00AM Sep 18, 2023Observed: 4.35 ft at 10:15AM Sep 18, 2023Observed: 4.33 ft at 10:30AM Sep 18, 2023Observed: 4.29 ft at 10:45AM Sep 18, 2023Observed: 4.3 ft at 11:00AM Sep 18, 2023Observed: 4.28 ft at 11:15AM Sep 18, 2023Observed: 4.23 ft at 11:45AM Sep 18, 2023Observed: 4.21 ft at 12:00PM Sep 18, 2023Observed: 4.17 ft at 12:15PM Sep 18, 2023Observed: 4.19 ft at 12:30PM Sep 18, 2023Observed: 4.18 ft at 12:45PM Sep 18, 2023Observed: 4.15 ft at 1:00PM Sep 18, 2023Observed: 4.16 ft at 1:15PM Sep 18, 2023Observed: 4.16 ft at 1:30PM Sep 18, 2023Observed: 4.13 ft at 1:45PM Sep 18, 2023Observed: 4.18 ft at 2:00PM Sep 18, 2023Observed: 4.19 ft at 2:15PM Sep 18, 2023Observed: 4.17 ft at 2:30PM Sep 18, 2023Observed: 4.16 ft at 2:45PM Sep 18, 2023Observed: 4.12 ft at 3:00PM Sep 18, 2023Observed: 4.14 ft at 3:15PM Sep 18, 2023Observed: 4.12 ft at 3:30PM Sep 18, 2023Observed: 4.12 ft at 3:45PM Sep 18, 2023Observed: 4.09 ft at 4:00PM Sep 18, 2023Observed: 4.11 ft at 4:15PM Sep 18, 2023Observed: 4.08 ft at 4:30PM Sep 18, 2023Observed: 4.08 ft at 4:45PM Sep 18, 2023Observed: 4.07 ft at 5:00PM Sep 18, 2023Observed: 4.06 ft at 5:15PM Sep 18, 2023Observed: 4.04 ft at 5:30PM Sep 18, 2023Observed: 4.04 ft at 5:45PM Sep 18, 2023Observed: 4.04 ft at 6:00PM Sep 18, 2023Observed: 4.02 ft at 6:15PM Sep 18, 2023Observed: 4.02 ft at 6:30PM Sep 18, 2023Observed: 4.01 ft at 6:45PM Sep 18, 2023Observed: 3.99 ft at 7:00PM Sep 18, 2023Observed: 3.97 ft at 7:15PM Sep 18, 2023Observed: 3.97 ft at 7:30PM Sep 18, 2023Observed: 3.99 ft at 7:45PM Sep 18, 2023Observed: 3.99 ft at 8:00PM Sep 18, 2023Observed: 3.98 ft at 8:15PM Sep 18, 2023Observed: 3.97 ft at 8:30PM Sep 18, 2023Observed: 3.96 ft at 8:45PM Sep 18, 2023Observed: 3.95 ft at 9:00PM Sep 18, 2023Observed: 3.93 ft at 9:30PM Sep 18, 2023Observed: 3.94 ft at 9:45PM Sep 18, 2023Observed: 3.93 ft at 10:00PM Sep 18, 2023Observed: 3.93 ft at 10:15PM Sep 18, 2023Observed: 3.91 ft at 10:30PM Sep 18, 2023Observed: 3.89 ft at 10:45PM Sep 18, 2023Observed: 3.88 ft at 11:00PM Sep 18, 2023Observed: 3.9 ft at 11:15PM Sep 18, 2023Observed: 3.88 ft at 11:30PM Sep 18, 2023Observed: 3.86 ft at 11:45PM Sep 18, 2023Observed: 3.85 ft at 12:00AM Sep 19, 2023Observed: 3.87 ft at 12:15AM Sep 19, 2023Observed: 3.87 ft at 12:30AM Sep 19, 2023Observed: 3.86 ft at 12:45AM Sep 19, 2023Observed: 3.85 ft at 1:00AM Sep 19, 2023Observed: 3.82 ft at 1:15AM Sep 19, 2023Observed: 3.83 ft at 1:30AM Sep 19, 2023Observed: 3.84 ft at 1:45AM Sep 19, 2023Observed: 3.83 ft at 2:00AM Sep 19, 2023Observed: 3.83 ft at 2:15AM Sep 19, 2023Observed: 3.82 ft at 2:30AM Sep 19, 2023Observed: 3.8 ft at 2:45AM Sep 19, 2023Observed: 3.81 ft at 3:00AM Sep 19, 2023Observed: 3.81 ft at 3:15AM Sep 19, 2023Observed: 3.76 ft at 3:45AM Sep 19, 2023Observed: 3.79 ft at 4:00AM Sep 19, 2023Observed: 3.75 ft at 4:15AM Sep 19, 2023Observed: 3.76 ft at 4:30AM Sep 19, 2023Observed: 3.74 ft at 4:45AM Sep 19, 2023Observed: 3.74 ft at 5:00AM Sep 19, 2023Observed: 3.74 ft at 5:15AM Sep 19, 2023Observed: 3.73 ft at 5:30AM Sep 19, 2023Observed: 3.72 ft at 5:45AM Sep 19, 2023Observed: 3.7 ft at 6:00AM Sep 19, 2023Observed: 3.69 ft at 6:30AM Sep 19, 2023Observed: 3.68 ft at 6:45AM Sep 19, 2023Observed: 3.69 ft at 7:00AM Sep 19, 2023Observed: 3.68 ft at 7:15AM Sep 19, 2023Observed: 3.67 ft at 7:30AM Sep 19, 2023Observed: 3.66 ft at 7:45AM Sep 19, 2023Observed: 3.66 ft at 8:00AM Sep 19, 2023Observed: 3.66 ft at 8:15AM Sep 19, 2023Observed: 3.64 ft at 8:30AM Sep 19, 2023Observed: 3.65 ft at 8:45AM Sep 19, 2023Observed: 3.65 ft at 9:00AM Sep 19, 2023Observed: 3.64 ft at 9:30AM Sep 19, 2023Observed: 3.62 ft at 9:45AM Sep 19, 2023Observed: 3.63 ft at 10:00AM Sep 19, 2023Observed: 3.61 ft at 10:15AM Sep 19, 2023Observed: 3.63 ft at 10:30AM Sep 19, 2023Observed: 3.63 ft at 10:45AM Sep 19, 2023Observed: 3.61 ft at 11:00AM Sep 19, 2023Observed: 3.61 ft at 11:30AM Sep 19, 2023Observed: 3.61 ft at 11:45AM Sep 19, 2023Observed: 3.62 ft at 12:00PM Sep 19, 2023Observed: 3.6 ft at 12:15PM Sep 19, 2023Observed: 3.59 ft at 12:30PM Sep 19, 2023Observed: 3.6 ft at 12:45PM Sep 19, 2023Observed: 3.59 ft at 1:00PM Sep 19, 2023Observed: 3.59 ft at 1:15PM Sep 19, 2023Observed: 3.59 ft at 1:30PM Sep 19, 2023Observed: 3.6 ft at 2:00PM Sep 19, 2023Observed: 3.6 ft at 2:15PM Sep 19, 2023Observed: 3.63 ft at 2:30PM Sep 19, 2023Observed: 3.63 ft at 2:45PM Sep 19, 2023Observed: 3.61 ft at 3:00PM Sep 19, 2023Observed: 3.63 ft at 3:15PM Sep 19, 2023Observed: 3.61 ft at 3:30PM Sep 19, 2023Observed: 3.62 ft at 3:45PM Sep 19, 2023Observed: 3.63 ft at 4:00PM Sep 19, 2023Observed: 3.64 ft at 4:15PM Sep 19, 2023Observed: 3.66 ft at 4:30PM Sep 19, 2023Observed: 3.66 ft at 4:45PM Sep 19, 2023Observed: 3.64 ft at 5:00PM Sep 19, 2023Observed: 3.64 ft at 5:15PM Sep 19, 2023Observed: 3.64 ft at 5:30PM Sep 19, 2023Observed: 3.64 ft at 5:45PM Sep 19, 2023Observed: 3.64 ft at 6:00PM Sep 19, 2023Observed: 3.65 ft at 6:15PM Sep 19, 2023Observed: 3.65 ft at 6:30PM Sep 19, 2023Observed: 3.63 ft at 6:45PM Sep 19, 2023Observed: 3.63 ft at 7:00PM Sep 19, 2023Observed: 3.64 ft at 7:15PM Sep 19, 2023Observed: 3.66 ft at 7:30PM Sep 19, 2023Observed: 3.64 ft at 7:45PM Sep 19, 2023Observed: 3.64 ft at 8:00PM Sep 19, 2023Observed: 3.64 ft at 8:15PM Sep 19, 2023Observed: 3.62 ft at 8:30PM Sep 19, 2023Observed: 3.59 ft at 8:45PM Sep 19, 2023Observed: 3.6 ft at 9:00PM Sep 19, 2023Observed: 3.6 ft at 9:15PM Sep 19, 2023Observed: 3.62 ft at 9:30PM Sep 19, 2023Observed: 3.6 ft at 9:45PM Sep 19, 2023Observed: 3.58 ft at 10:00PM Sep 19, 2023Observed: 3.59 ft at 10:15PM Sep 19, 2023Observed: 3.59 ft at 10:30PM Sep 19, 2023Observed: 3.59 ft at 10:45PM Sep 19, 2023Observed: 3.58 ft at 11:00PM Sep 19, 2023Observed: 3.58 ft at 11:15PM Sep 19, 2023Observed: 3.57 ft at 11:30PM Sep 19, 2023Observed: 3.57 ft at 11:45PM Sep 19, 2023Observed: 3.56 ft at 12:30AM Sep 20, 2023Observed: 3.57 ft at 12:45AM Sep 20, 2023Observed: 3.53 ft at 1:00AM Sep 20, 2023Observed: 3.56 ft at 1:15AM Sep 20, 2023Observed: 3.53 ft at 1:30AM Sep 20, 2023Observed: 3.54 ft at 1:45AM Sep 20, 2023Observed: 3.53 ft at 2:00AM Sep 20, 2023Observed: 3.53 ft at 2:15AM Sep 20, 2023Observed: 3.53 ft at 2:30AM Sep 20, 2023Observed: 3.51 ft at 2:45AM Sep 20, 2023Observed: 3.51 ft at 3:00AM Sep 20, 2023Observed: 3.53 ft at 3:15AM Sep 20, 2023Observed: 3.5 ft at 3:30AM Sep 20, 2023Observed: 3.5 ft at 3:45AM Sep 20, 2023Observed: 3.5 ft at 4:00AM Sep 20, 2023Observed: 3.49 ft at 4:15AM Sep 20, 2023Observed: 3.48 ft at 4:30AM Sep 20, 2023Observed: 3.48 ft at 4:45AM Sep 20, 2023Observed: 3.46 ft at 5:00AM Sep 20, 2023Observed: 3.46 ft at 5:15AM Sep 20, 2023Observed: 3.47 ft at 5:30AM Sep 20, 2023Observed: 3.47 ft at 5:45AM Sep 20, 2023Observed: 3.44 ft at 6:00AM Sep 20, 2023Observed: 3.45 ft at 6:15AM Sep 20, 2023Observed: 3.44 ft at 6:30AM Sep 20, 2023Observed: 3.44 ft at 6:45AM Sep 20, 2023Observed: 3.44 ft at 7:00AM Sep 20, 2023Observed: 3.44 ft at 7:15AM Sep 20, 2023Observed: 3.43 ft at 7:30AM Sep 20, 2023Observed: 3.42 ft at 7:45AM Sep 20, 2023Observed: 3.42 ft at 8:00AM Sep 20, 2023Observed: 3.41 ft at 8:15AM Sep 20, 2023Observed: 3.42 ft at 8:30AM Sep 20, 2023Observed: 3.43 ft at 8:45AM Sep 20, 2023Observed: 3.41 ft at 9:00AM Sep 20, 2023Observed: 3.41 ft at 9:15AM Sep 20, 2023Observed: 3.4 ft at 9:45AM Sep 20, 2023Observed: 3.39 ft at 10:00AM Sep 20, 2023Observed: 3.4 ft at 10:15AM Sep 20, 2023Observed: 3.38 ft at 10:30AM Sep 20, 2023Observed: 3.4 ft at 10:45AM Sep 20, 2023Observed: 3.39 ft at 11:00AM Sep 20, 2023Observed: 3.39 ft at 11:15AM Sep 20, 2023Observed: 3.37 ft at 11:30AM Sep 20, 2023Observed: 3.37 ft at 11:45AM Sep 20, 2023Observed: 3.37 ft at 12:00PM Sep 20, 2023Observed: 3.38 ft at 12:15PM Sep 20, 2023Observed: 3.38 ft at 12:30PM Sep 20, 2023Observed: 3.37 ft at 12:45PM Sep 20, 2023Observed: 3.38 ft at 1:00PM Sep 20, 2023Observed: 3.36 ft at 1:15PM Sep 20, 2023Observed: 3.37 ft at 1:30PM Sep 20, 2023Observed: 3.39 ft at 1:45PM Sep 20, 2023Observed: 3.38 ft at 2:00PM Sep 20, 2023Observed: 3.38 ft at 2:15PM Sep 20, 2023Observed: 3.37 ft at 2:30PM Sep 20, 2023Observed: 3.37 ft at 2:45PM Sep 20, 2023Observed: 3.38 ft at 3:00PM Sep 20, 2023Observed: 3.37 ft at 3:15PM Sep 20, 2023Observed: 3.39 ft at 3:30PM Sep 20, 2023Observed: 3.38 ft at 3:45PM Sep 20, 2023Observed: 3.38 ft at 4:00PM Sep 20, 2023Observed: 3.4 ft at 4:15PM Sep 20, 2023Observed: 3.39 ft at 4:30PM Sep 20, 2023Observed: 3.39 ft at 4:45PM Sep 20, 2023Observed: 3.38 ft at 5:00PM Sep 20, 2023Observed: 3.38 ft at 5:15PM Sep 20, 2023Observed: 3.38 ft at 5:30PM Sep 20, 2023Observed: 3.39 ft at 5:45PM Sep 20, 2023Observed: 3.38 ft at 6:00PM Sep 20, 2023Observed: 3.38 ft at 6:15PM Sep 20, 2023Observed: 3.39 ft at 6:45PM Sep 20, 2023Observed: 3.39 ft at 7:00PM Sep 20, 2023Observed: 3.39 ft at 7:15PM Sep 20, 2023Observed: 3.4 ft at 7:30PM Sep 20, 2023Observed: 3.37 ft at 7:45PM Sep 20, 2023Observed: 3.38 ft at 8:00PM Sep 20, 2023Observed: 3.36 ft at 8:15PM Sep 20, 2023Observed: 3.37 ft at 8:30PM Sep 20, 2023Observed: 3.36 ft at 8:45PM Sep 20, 2023Observed: 3.35 ft at 9:00PM Sep 20, 2023Observed: 3.35 ft at 9:15PM Sep 20, 2023Observed: 3.34 ft at 9:30PM Sep 20, 2023Observed: 3.37 ft at 9:45PM Sep 20, 2023Observed: 3.36 ft at 10:00PM Sep 20, 2023Observed: 3.34 ft at 10:15PM Sep 20, 2023Observed: 3.36 ft at 10:30PM Sep 20, 2023Observed: 3.35 ft at 10:45PM Sep 20, 2023Observed: 3.34 ft at 11:00PM Sep 20, 2023Observed: 3.34 ft at 11:15PM Sep 20, 2023Observed: 3.31 ft at 11:30PM Sep 20, 2023Observed: 3.32 ft at 11:45PM Sep 20, 2023Observed: 3.33 ft at 12:00AM Sep 21, 2023Observed: 3.32 ft at 12:15AM Sep 21, 2023Observed: 3.3 ft at 12:30AM Sep 21, 2023Observed: 3.31 ft at 12:45AM Sep 21, 2023Observed: 3.3 ft at 1:00AM Sep 21, 2023Observed: 3.3 ft at 1:15AM Sep 21, 2023Observed: 3.28 ft at 1:30AM Sep 21, 2023Observed: 3.29 ft at 1:45AM Sep 21, 2023Observed: 3.27 ft at 2:00AM Sep 21, 2023Observed: 3.28 ft at 2:30AM Sep 21, 2023Observed: 3.24 ft at 2:45AM Sep 21, 2023Observed: 3.26 ft at 3:00AM Sep 21, 2023Observed: 3.26 ft at 3:15AM Sep 21, 2023Observed: 3.26 ft at 3:30AM Sep 21, 2023Observed: 3.26 ft at 3:45AM Sep 21, 2023Observed: 3.25 ft at 4:00AM Sep 21, 2023Observed: 3.26 ft at 4:15AM Sep 21, 2023Observed: 3.26 ft at 4:30AM Sep 21, 2023Observed: 3.25 ft at 4:45AM Sep 21, 2023Observed: 3.23 ft at 5:00AM Sep 21, 2023Observed: 3.24 ft at 5:30AM Sep 21, 2023Observed: 3.24 ft at 5:45AM Sep 21, 2023Observed: 3.24 ft at 6:00AM Sep 21, 2023Observed: 3.22 ft at 6:15AM Sep 21, 2023Observed: 3.23 ft at 6:30AM Sep 21, 2023Observed: 3.22 ft at 6:45AM Sep 21, 2023Observed: 3.2 ft at 7:15AM Sep 21, 2023Observed: 3.21 ft at 7:30AM Sep 21, 2023Observed: 3.19 ft at 7:45AM Sep 21, 2023Observed: 3.2 ft at 8:00AM Sep 21, 2023Observed: 3.2 ft at 8:15AM Sep 21, 2023Observed: 3.18 ft at 8:30AM Sep 21, 2023Observed: 3.17 ft at 8:45AM Sep 21, 2023Observed: 3.18 ft at 9:00AM Sep 21, 2023Observed: 3.17 ft at 9:15AM Sep 21, 2023Observed: 3.18 ft at 9:30AM Sep 21, 2023Observed: 3.18 ft at 10:00AM Sep 21, 2023Observed: 3.19 ft at 10:30AM Sep 21, 2023Observed: 3.17 ft at 10:45AM Sep 21, 2023Observed: 3.16 ft at 11:00AM Sep 21, 2023Observed: 3.16 ft at 11:15AM Sep 21, 2023Observed: 3.17 ft at 11:30AM Sep 21, 2023Observed: 3.15 ft at 11:45AM Sep 21, 2023Observed: 3.16 ft at 12:00PM Sep 21, 2023Observed: 3.16 ft at 12:30PM Sep 21, 2023Observed: 3.15 ft at 12:45PM Sep 21, 2023Observed: 3.15 ft at 1:00PM Sep 21, 2023Observed: 3.16 ft at 1:30PM Sep 21, 2023Observed: 3.17 ft at 1:45PM Sep 21, 2023Observed: 3.15 ft at 2:00PM Sep 21, 2023Observed: 3.17 ft at 2:15PM Sep 21, 2023Observed: 3.15 ft at 2:30PM Sep 21, 2023Observed: 3.15 ft at 2:45PM Sep 21, 2023Observed: 3.15 ft at 3:00PM Sep 21, 2023Observed: 3.16 ft at 3:15PM Sep 21, 2023Observed: 3.16 ft at 3:30PM Sep 21, 2023Observed: 3.17 ft at 3:45PM Sep 21, 2023Observed: 3.17 ft at 4:15PM Sep 21, 2023Observed: 3.16 ft at 4:30PM Sep 21, 2023Observed: 3.15 ft at 4:45PM Sep 21, 2023Observed: 3.15 ft at 5:00PM Sep 21, 2023Observed: 3.15 ft at 5:15PM Sep 21, 2023Observed: 3.16 ft at 5:30PM Sep 21, 2023Observed: 3.14 ft at 5:45PM Sep 21, 2023USGS--Water Resources of the United StatesTHNI2(plotting HGIRG) Graph Created (6:11PM Sep 21, 2023)ObservedLatest observed value: 3.14 ft at 5:45 PM CDT 21-Sep-2023. Flood Stage is 9 ft
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Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NAVD88
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 Thorn Creek at Thornton are issued as needed during times of high water, but are not routinely available.

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Upstream Locations Upstream Gauge Downstream Gauge Downstream Gauge - at South Holland
Flood Categories (in feet)
Major Flood Stage: 15.5
Moderate Flood Stage: 14
Flood Stage: 9
Action Stage: 7.5
Low Stage (in feet): 2.5

Historic Crests
(1) 17.06 ft on 06/14/1981
(2) 16.87 ft on 11/28/1990
(3) 16.24 ft on 07/18/1996
(4) 16.00 ft on 07/13/1957
(5) 15.95 ft on 12/03/1982
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 9.95 ft on 05/09/2021
(2) 12.07 ft on 05/18/2020
(3) 11.41 ft on 04/30/2020
(4) 11.13 ft on 01/11/2020
(5) 10.08 ft on 10/27/2019
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 1.85 ft on 10/05/1994
(2) 1.94 ft on 09/27/1995
(3) 2.16 ft on 10/16/1999
(4) 2.48 ft on 10/10/2020
(5) 2.53 ft on 08/21/2017
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
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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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23 Chicago & Eastern Illinois Railroad tracks are threatened near Glenwood.
21 I-94 may be threatened in South Holland.
20 Structures may be threatened along Clyde Avenue, 173rd Street, and 173rd Place in South Holland.
19 I-294/I-80 onramps may be threatened west of the creek south of South Holland. Residential structures may be threatened along Everett Avenue, Cregier Avenue, and Vollbrecht Road in South Holland. Clyde Avenue, 173rd Street, and 173rd Place may be threatened in South Holland.
18.5 170th Street may be threatened in South Holland. Industrial structures may be threatened along Bernice Road in South Holland.
18 Margaret Street threatened in Thornton.
17.5 Residential structures may be threatened along Kimbark Avenue, University Avenue, and 173rd Street in South Holland. Everett Avenue, Cregier Avenue, and Vollbrecht Road may be threatened in South Holland.
17 Kimbark Avenue, University Avenue, and 173rd Street may be threatened in South Holland. Thorn Creek Diversion Tunnel reaches capacity.
16 Residential structures threatened along Margaret Street in Thornton.
15.5 Structures threatened at Glenwood Academy. Residences threatened along Park Drive in Glenwood.
15 Industrial structures threatened south of Margaret Street in Thornton.
14.5 Park Drive threatened in Glenwood. Industrial parking lots threatened south of Margaret Street in Thornton.
13.5 Chicago Heights Glenwood Road threatened in Glenwood. Residential parking lots threatened along Maragaret Street in Thornton.
13 Parking lots threatened at Glenwood Academy.
12 Structures threatened along Glenwood Thornton Road north of Glenwood.
11.5 Glenwood Thornton Road threatened north of Glenwood.
11 187th Street threatened in Glenwood.
9 Water begins to be diverted through Thorn Creek Diversion Tunnel.
8 Athletic fields are inundated at Glenwood Academy.
7 Water overflows low-lying banks in Glenwood, Thornton, and South Holland.
Low Water Impacts Collapse
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1.5 River nears zero flow.
2.5 Approximate stage of the 1-in-10 annual chance flow (7-day average).
About This Location Collapse

Latitude: 41.568167° N, Longitude: 87.608333° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 9 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 586.11 596.11 Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 586.43 596.43 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?
USGS Streamflow Duration Hydrograph
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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