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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
Big Sioux River at Trent Stage (ft)Flow (cfs)Observed: 1485.54 ft at 1:30PM Sep 20, 2023Observed: 1485.52 ft at 1:45PM Sep 20, 2023Observed: 1485.55 ft at 2:00PM Sep 20, 2023Observed: 1485.54 ft at 2:15PM Sep 20, 2023Observed: 1485.55 ft at 2:30PM Sep 20, 2023Observed: 1485.55 ft at 2:45PM Sep 20, 2023Observed: 1485.52 ft at 3:00PM Sep 20, 2023Observed: 1485.53 ft at 3:15PM Sep 20, 2023Observed: 1485.55 ft at 3:30PM Sep 20, 2023Observed: 1485.55 ft at 3:45PM Sep 20, 2023Observed: 1485.55 ft at 4:00PM Sep 20, 2023Observed: 1485.54 ft at 4:15PM Sep 20, 2023Observed: 1485.53 ft at 4:30PM Sep 20, 2023Observed: 1485.54 ft at 4:45PM Sep 20, 2023Observed: 1485.55 ft at 5:00PM Sep 20, 2023Observed: 1485.54 ft at 5:15PM Sep 20, 2023Observed: 1485.53 ft at 5:30PM Sep 20, 2023Observed: 1485.54 ft at 5:45PM Sep 20, 2023Observed: 1485.53 ft at 6:00PM Sep 20, 2023Observed: 1485.53 ft at 6:15PM Sep 20, 2023Observed: 1485.54 ft at 6:30PM Sep 20, 2023Observed: 1485.54 ft at 6:45PM Sep 20, 2023Observed: 1485.55 ft at 7:00PM Sep 20, 2023Observed: 1485.54 ft at 7:15PM Sep 20, 2023Observed: 1485.54 ft at 7:30PM Sep 20, 2023Observed: 1485.54 ft at 7:45PM Sep 20, 2023Observed: 1485.54 ft at 8:00PM Sep 20, 2023Observed: 1485.55 ft at 8:15PM Sep 20, 2023Observed: 1485.54 ft at 8:30PM Sep 20, 2023Observed: 1485.54 ft at 8:45PM Sep 20, 2023Observed: 1485.54 ft at 9:00PM Sep 20, 2023Observed: 1485.54 ft at 9:15PM Sep 20, 2023Observed: 1485.54 ft at 9:30PM Sep 20, 2023Observed: 1485.54 ft at 9:45PM Sep 20, 2023Observed: 1485.55 ft at 10:00PM Sep 20, 2023Observed: 1485.54 ft at 10:15PM Sep 20, 2023Observed: 1485.54 ft at 10:30PM Sep 20, 2023Observed: 1485.54 ft at 10:45PM Sep 20, 2023Observed: 1485.53 ft at 11:00PM Sep 20, 2023Observed: 1485.54 ft at 11:15PM Sep 20, 2023Observed: 1485.54 ft at 11:30PM Sep 20, 2023Observed: 1485.53 ft at 11:45PM Sep 20, 2023Observed: 1485.53 ft at 12:00AM Sep 21, 2023Observed: 1485.54 ft at 12:15AM Sep 21, 2023Observed: 1485.54 ft at 1:30AM Sep 21, 2023Observed: 1485.52 ft at 1:45AM Sep 21, 2023Observed: 1485.52 ft at 2:00AM Sep 21, 2023Observed: 1485.53 ft at 2:15AM Sep 21, 2023Observed: 1485.54 ft at 2:30AM Sep 21, 2023Observed: 1485.54 ft at 2:45AM Sep 21, 2023Observed: 1485.54 ft at 3:00AM Sep 21, 2023Observed: 1485.54 ft at 3:15AM Sep 21, 2023Observed: 1485.54 ft at 3:30AM Sep 21, 2023Observed: 1485.55 ft at 3:45AM Sep 21, 2023Observed: 1485.54 ft at 4:00AM Sep 21, 2023Observed: 1485.54 ft at 4:15AM Sep 21, 2023Observed: 1485.55 ft at 4:30AM Sep 21, 2023Observed: 1485.55 ft at 4:45AM Sep 21, 2023Observed: 1485.55 ft at 5:00AM Sep 21, 2023Observed: 1485.54 ft at 5:15AM Sep 21, 2023Observed: 1485.55 ft at 5:30AM Sep 21, 2023Observed: 1485.54 ft at 5:45AM Sep 21, 2023Observed: 1485.55 ft at 6:00AM Sep 21, 2023Observed: 1485.55 ft at 6:15AM Sep 21, 2023Observed: 1485.55 ft at 6:30AM Sep 21, 2023Observed: 1485.54 ft at 6:45AM Sep 21, 2023Observed: 1485.54 ft at 7:00AM Sep 21, 2023Observed: 1485.54 ft at 7:15AM Sep 21, 2023Observed: 1485.55 ft at 7:30AM Sep 21, 2023Observed: 1485.55 ft at 7:45AM Sep 21, 2023Observed: 1485.56 ft at 8:00AM Sep 21, 2023Observed: 1485.55 ft at 8:15AM Sep 21, 2023Observed: 1485.54 ft at 8:30AM Sep 21, 2023Observed: 1485.54 ft at 8:45AM Sep 21, 2023Observed: 1485.54 ft at 9:00AM Sep 21, 2023Observed: 1485.55 ft at 9:15AM Sep 21, 2023Observed: 1485.53 ft at 9:30AM Sep 21, 2023Observed: 1485.54 ft at 9:45AM Sep 21, 2023Observed: 1485.54 ft at 10:00AM Sep 21, 2023Observed: 1485.54 ft at 10:15AM Sep 21, 2023Observed: 1485.55 ft at 10:30AM Sep 21, 2023Observed: 1485.52 ft at 10:45AM Sep 21, 2023Observed: 1485.53 ft at 11:00AM Sep 21, 2023Observed: 1485.53 ft at 11:15AM Sep 21, 2023Observed: 1485.52 ft at 11:30AM Sep 21, 2023Observed: 1485.52 ft at 11:45AM Sep 21, 2023Observed: 1485.52 ft at 12:00PM Sep 21, 2023Observed: 1485.52 ft at 12:15PM Sep 21, 2023Observed: 1485.54 ft at 12:30PM Sep 21, 2023Observed: 1485.53 ft at 12:45PM Sep 21, 2023Observed: 1485.55 ft at 1:00PM Sep 21, 2023Observed: 1485.54 ft at 1:15PM Sep 21, 2023Observed: 1485.51 ft at 1:30PM Sep 21, 2023Observed: 1485.54 ft at 1:45PM Sep 21, 2023Observed: 1485.5 ft at 2:00PM Sep 21, 2023Observed: 1485.53 ft at 2:15PM Sep 21, 2023Observed: 1485.51 ft at 2:30PM Sep 21, 2023Observed: 1485.54 ft at 2:45PM Sep 21, 2023Observed: 1485.54 ft at 3:00PM Sep 21, 2023Observed: 1485.52 ft at 3:15PM Sep 21, 2023Observed: 1485.54 ft at 3:30PM Sep 21, 2023Observed: 1485.55 ft at 3:45PM Sep 21, 2023Observed: 1485.55 ft at 4:00PM Sep 21, 2023Observed: 1485.54 ft at 4:15PM Sep 21, 2023Observed: 1485.54 ft at 4:30PM Sep 21, 2023Observed: 1485.55 ft at 4:45PM Sep 21, 2023Observed: 1485.55 ft at 5:00PM Sep 21, 2023Observed: 1485.54 ft at 5:15PM Sep 21, 2023Observed: 1485.54 ft at 5:30PM Sep 21, 2023Observed: 1485.53 ft at 5:45PM Sep 21, 2023Observed: 1485.53 ft at 6:00PM Sep 21, 2023Observed: 1485.53 ft at 6:15PM Sep 21, 2023Observed: 1485.55 ft at 6:30PM Sep 21, 2023Observed: 1485.55 ft at 6:45PM Sep 21, 2023Observed: 1485.54 ft at 7:00PM Sep 21, 2023Observed: 1485.54 ft at 7:15PM Sep 21, 2023Observed: 1485.55 ft at 8:30PM Sep 21, 2023Observed: 1485.55 ft at 8:45PM Sep 21, 2023Observed: 1485.55 ft at 9:00PM Sep 21, 2023Observed: 1485.55 ft at 9:15PM Sep 21, 2023Observed: 1485.55 ft at 9:30PM Sep 21, 2023Observed: 1485.55 ft at 9:45PM Sep 21, 2023Observed: 1485.55 ft at 10:00PM Sep 21, 2023Observed: 1485.55 ft at 10:15PM Sep 21, 2023Observed: 1485.55 ft at 10:30PM Sep 21, 2023Observed: 1485.55 ft at 10:45PM Sep 21, 2023Observed: 1485.55 ft at 11:00PM Sep 21, 2023Observed: 1485.55 ft at 11:15PM Sep 21, 2023Observed: 1485.55 ft at 11:30PM Sep 21, 2023Observed: 1485.55 ft at 11:45PM Sep 21, 2023Observed: 1485.55 ft at 12:00AM Sep 22, 2023Observed: 1485.55 ft at 12:15AM Sep 22, 2023Observed: 1485.56 ft at 12:45AM Sep 22, 2023Observed: 1485.55 ft at 1:00AM Sep 22, 2023Observed: 1485.55 ft at 1:15AM Sep 22, 2023Observed: 1485.55 ft at 1:45AM Sep 22, 2023Observed: 1485.54 ft at 2:00AM Sep 22, 2023Observed: 1485.55 ft at 2:15AM Sep 22, 2023Observed: 1485.54 ft at 2:30AM Sep 22, 2023Observed: 1485.55 ft at 2:45AM Sep 22, 2023Observed: 1485.55 ft at 3:00AM Sep 22, 2023Observed: 1485.55 ft at 3:15AM Sep 22, 2023Observed: 1485.54 ft at 3:30AM Sep 22, 2023Observed: 1485.54 ft at 3:45AM Sep 22, 2023Observed: 1485.55 ft at 4:00AM Sep 22, 2023Observed: 1485.54 ft at 4:15AM Sep 22, 2023Observed: 1485.54 ft at 4:30AM Sep 22, 2023Observed: 1485.54 ft at 4:45AM Sep 22, 2023Observed: 1485.55 ft at 5:00AM Sep 22, 2023Observed: 1485.54 ft at 5:15AM Sep 22, 2023Observed: 1485.55 ft at 5:30AM Sep 22, 2023Observed: 1485.54 ft at 5:45AM Sep 22, 2023Observed: 1485.54 ft at 6:00AM Sep 22, 2023Observed: 1485.54 ft at 6:15AM Sep 22, 2023Observed: 1485.54 ft at 6:30AM Sep 22, 2023Observed: 1485.54 ft at 6:45AM Sep 22, 2023Observed: 1485.54 ft at 7:00AM Sep 22, 2023Observed: 1485.55 ft at 7:15AM Sep 22, 2023Observed: 1485.54 ft at 7:30AM Sep 22, 2023Observed: 1485.53 ft at 7:45AM Sep 22, 2023Observed: 1485.54 ft at 8:00AM Sep 22, 2023Observed: 1485.54 ft at 8:15AM Sep 22, 2023Observed: 1485.54 ft at 8:30AM Sep 22, 2023Observed: 1485.55 ft at 8:45AM Sep 22, 2023Observed: 1485.55 ft at 9:00AM Sep 22, 2023Observed: 1485.55 ft at 9:15AM Sep 22, 2023Observed: 1485.53 ft at 9:30AM Sep 22, 2023Observed: 1485.52 ft at 9:45AM Sep 22, 2023Observed: 1485.53 ft at 10:00AM Sep 22, 2023Observed: 1485.54 ft at 10:15AM Sep 22, 2023Observed: 1485.54 ft at 10:30AM Sep 22, 2023Observed: 1485.55 ft at 10:45AM Sep 22, 2023Observed: 1485.53 ft at 11:00AM Sep 22, 2023Observed: 1485.52 ft at 11:15AM Sep 22, 2023Observed: 1485.53 ft at 11:30AM Sep 22, 2023Observed: 1485.55 ft at 11:45AM Sep 22, 2023Observed: 1485.54 ft at 12:00PM Sep 22, 2023Observed: 1485.54 ft at 12:15PM Sep 22, 2023Observed: 1485.55 ft at 12:30PM Sep 22, 2023Observed: 1485.54 ft at 12:45PM Sep 22, 2023Observed: 1485.54 ft at 1:00PM Sep 22, 2023Observed: 1485.53 ft at 1:15PM Sep 22, 2023Observed: 1485.54 ft at 1:30PM Sep 22, 2023Observed: 1485.55 ft at 1:45PM Sep 22, 2023Observed: 1485.55 ft at 2:00PM Sep 22, 2023Observed: 1485.53 ft at 2:15PM Sep 22, 2023Observed: 1485.53 ft at 2:30PM Sep 22, 2023Observed: 1485.53 ft at 2:45PM Sep 22, 2023Observed: 1485.54 ft at 3:00PM Sep 22, 2023Observed: 1485.53 ft at 3:15PM Sep 22, 2023Observed: 1485.53 ft at 3:30PM Sep 22, 2023Observed: 1485.54 ft at 3:45PM Sep 22, 2023Observed: 1485.53 ft at 4:00PM Sep 22, 2023Observed: 1485.52 ft at 4:15PM Sep 22, 2023Observed: 1485.54 ft at 4:30PM Sep 22, 2023Observed: 1485.53 ft at 4:45PM Sep 22, 2023Observed: 1485.53 ft at 5:00PM Sep 22, 2023Observed: 1485.55 ft at 5:15PM Sep 22, 2023Observed: 1485.53 ft at 5:30PM Sep 22, 2023Observed: 1485.53 ft at 5:45PM Sep 22, 2023Observed: 1485.53 ft at 6:00PM Sep 22, 2023Observed: 1485.54 ft at 6:15PM Sep 22, 2023Observed: 1485.54 ft at 6:30PM Sep 22, 2023Observed: 1485.55 ft at 6:45PM Sep 22, 2023Observed: 1485.54 ft at 7:00PM Sep 22, 2023Observed: 1485.53 ft at 7:15PM Sep 22, 2023Observed: 1485.54 ft at 7:30PM Sep 22, 2023Observed: 1485.54 ft at 7:45PM Sep 22, 2023Observed: 1485.54 ft at 8:00PM Sep 22, 2023Observed: 1485.54 ft at 8:15PM Sep 22, 2023Observed: 1485.54 ft at 8:30PM Sep 22, 2023Observed: 1485.54 ft at 8:45PM Sep 22, 2023Observed: 1485.55 ft at 9:00PM Sep 22, 2023Observed: 1485.54 ft at 9:15PM Sep 22, 2023Observed: 1485.53 ft at 9:30PM Sep 22, 2023Observed: 1485.54 ft at 9:45PM Sep 22, 2023Observed: 1485.54 ft at 10:00PM Sep 22, 2023Observed: 1485.54 ft at 10:15PM Sep 22, 2023Observed: 1485.55 ft at 10:30PM Sep 22, 2023Observed: 1485.56 ft at 10:45PM Sep 22, 2023Observed: 1485.55 ft at 11:00PM Sep 22, 2023Observed: 1485.55 ft at 11:15PM Sep 22, 2023Observed: 1485.55 ft at 11:30PM Sep 22, 2023Observed: 1485.56 ft at 11:45PM Sep 22, 2023Observed: 1485.55 ft at 12:00AM Sep 23, 2023Observed: 1485.55 ft at 12:15AM Sep 23, 2023Observed: 1485.55 ft at 12:30AM Sep 23, 2023Observed: 1485.55 ft at 12:45AM Sep 23, 2023Observed: 1485.55 ft at 1:00AM Sep 23, 2023Observed: 1485.55 ft at 1:15AM Sep 23, 2023Observed: 1485.55 ft at 1:30AM Sep 23, 2023Observed: 1485.55 ft at 1:45AM Sep 23, 2023Observed: 1485.55 ft at 2:00AM Sep 23, 2023Observed: 1485.55 ft at 2:15AM Sep 23, 2023Observed: 1485.55 ft at 2:30AM Sep 23, 2023Observed: 1485.56 ft at 2:45AM Sep 23, 2023Observed: 1485.56 ft at 3:00AM Sep 23, 2023Observed: 1485.56 ft at 3:15AM Sep 23, 2023Observed: 1485.55 ft at 3:30AM Sep 23, 2023Observed: 1485.56 ft at 3:45AM Sep 23, 2023Observed: 1485.55 ft at 4:00AM Sep 23, 2023Observed: 1485.56 ft at 4:15AM Sep 23, 2023Observed: 1485.55 ft at 4:30AM Sep 23, 2023Observed: 1485.54 ft at 4:45AM Sep 23, 2023Observed: 1485.55 ft at 5:00AM Sep 23, 2023Observed: 1485.55 ft at 5:15AM Sep 23, 2023Observed: 1485.56 ft at 5:30AM Sep 23, 2023Observed: 1485.55 ft at 5:45AM Sep 23, 2023Observed: 1485.55 ft at 6:00AM Sep 23, 2023Observed: 1485.55 ft at 6:15AM Sep 23, 2023Observed: 1485.55 ft at 6:30AM Sep 23, 2023Observed: 1485.55 ft at 6:45AM Sep 23, 2023Observed: 1485.55 ft at 7:00AM Sep 23, 2023Observed: 1485.56 ft at 7:15AM Sep 23, 2023Observed: 1485.56 ft at 7:30AM Sep 23, 2023Observed: 1485.55 ft at 7:45AM Sep 23, 2023Observed: 1485.56 ft at 8:00AM Sep 23, 2023Observed: 1485.56 ft at 8:15AM Sep 23, 2023Observed: 1485.56 ft at 8:30AM Sep 23, 2023Observed: 1485.55 ft at 8:45AM Sep 23, 2023Observed: 1485.56 ft at 9:00AM Sep 23, 2023Observed: 1485.55 ft at 9:15AM Sep 23, 2023Observed: 1485.55 ft at 9:30AM Sep 23, 2023Observed: 1485.55 ft at 9:45AM Sep 23, 2023Observed: 1485.55 ft at 10:00AM Sep 23, 2023Observed: 1485.56 ft at 10:15AM Sep 23, 2023Observed: 1485.52 ft at 10:30AM Sep 23, 2023Observed: 1485.53 ft at 10:45AM Sep 23, 2023Observed: 1485.55 ft at 11:00AM Sep 23, 2023Observed: 1485.56 ft at 11:15AM Sep 23, 2023Observed: 1485.54 ft at 11:30AM Sep 23, 2023Observed: 1485.54 ft at 12:00PM Sep 23, 2023Observed: 1485.54 ft at 12:15PM Sep 23, 2023Observed: 1485.55 ft at 1:30PM Sep 23, 2023Observed: 1485.56 ft at 1:45PM Sep 23, 2023Observed: 1485.53 ft at 2:00PM Sep 23, 2023Observed: 1485.53 ft at 2:15PM Sep 23, 2023Observed: 1485.53 ft at 2:30PM Sep 23, 2023Observed: 1485.53 ft at 2:45PM Sep 23, 2023Observed: 1485.55 ft at 3:00PM Sep 23, 2023Observed: 1485.56 ft at 3:15PM Sep 23, 2023Observed: 1485.55 ft at 3:30PM Sep 23, 2023Observed: 1485.54 ft at 3:45PM Sep 23, 2023Observed: 1485.53 ft at 4:00PM Sep 23, 2023Observed: 1485.54 ft at 4:15PM Sep 23, 2023Observed: 1485.55 ft at 4:30PM Sep 23, 2023Observed: 1485.55 ft at 4:45PM Sep 23, 2023Observed: 1485.55 ft at 5:00PM Sep 23, 2023Observed: 1485.56 ft at 5:15PM Sep 23, 2023Observed: 1485.53 ft at 5:30PM Sep 23, 2023Observed: 1485.53 ft at 5:45PM Sep 23, 2023Observed: 1485.56 ft at 6:00PM Sep 23, 2023Observed: 1485.55 ft at 6:30PM Sep 23, 2023Observed: 1485.55 ft at 6:45PM Sep 23, 2023Observed: 1485.55 ft at 7:00PM Sep 23, 2023Observed: 1485.54 ft at 7:15PM Sep 23, 2023Observed: 1485.56 ft at 7:45PM Sep 23, 2023Observed: 1485.56 ft at 8:00PM Sep 23, 2023Observed: 1485.56 ft at 8:15PM Sep 23, 2023Observed: 1485.56 ft at 8:45PM Sep 23, 2023Observed: 1485.55 ft at 9:00PM Sep 23, 2023Observed: 1485.54 ft at 9:15PM Sep 23, 2023Observed: 1485.57 ft at 9:30PM Sep 23, 2023Observed: 1485.56 ft at 9:45PM Sep 23, 2023Observed: 1485.56 ft at 10:00PM Sep 23, 2023Observed: 1485.56 ft at 10:15PM Sep 23, 2023Observed: 1485.56 ft at 10:30PM Sep 23, 2023Observed: 1485.56 ft at 10:45PM Sep 23, 2023Observed: 1485.56 ft at 11:00PM Sep 23, 2023Observed: 1485.56 ft at 11:15PM Sep 23, 2023Observed: 1485.56 ft at 11:30PM Sep 23, 2023Observed: 1485.56 ft at 11:45PM Sep 23, 2023Observed: 1485.55 ft at 12:00AM Sep 24, 2023Observed: 1485.56 ft at 12:15AM Sep 24, 2023Observed: 1485.57 ft at 12:30AM Sep 24, 2023Observed: 1485.57 ft at 12:45AM Sep 24, 2023Observed: 1485.56 ft at 1:00AM Sep 24, 2023Observed: 1485.56 ft at 1:15AM Sep 24, 2023Observed: 1485.56 ft at 1:30AM Sep 24, 2023Observed: 1485.56 ft at 1:45AM Sep 24, 2023Observed: 1485.57 ft at 2:00AM Sep 24, 2023Observed: 1485.56 ft at 2:15AM Sep 24, 2023Observed: 1485.57 ft at 2:30AM Sep 24, 2023Observed: 1485.57 ft at 2:45AM Sep 24, 2023Observed: 1485.57 ft at 3:00AM Sep 24, 2023Observed: 1485.57 ft at 3:15AM Sep 24, 2023Observed: 1485.57 ft at 4:30AM Sep 24, 2023Observed: 1485.57 ft at 4:45AM Sep 24, 2023Observed: 1485.57 ft at 5:00AM Sep 24, 2023Observed: 1485.56 ft at 5:15AM Sep 24, 2023Observed: 1485.57 ft at 5:30AM Sep 24, 2023Observed: 1485.57 ft at 5:45AM Sep 24, 2023Observed: 1485.57 ft at 6:00AM Sep 24, 2023Observed: 1485.57 ft at 6:15AM Sep 24, 2023Observed: 1485.58 ft at 6:30AM Sep 24, 2023Observed: 1485.57 ft at 6:45AM Sep 24, 2023Observed: 1485.57 ft at 7:00AM Sep 24, 2023Observed: 1485.58 ft at 7:15AM Sep 24, 2023Observed: 1485.57 ft at 7:30AM Sep 24, 2023Observed: 1485.57 ft at 7:45AM Sep 24, 2023Observed: 1485.57 ft at 8:00AM Sep 24, 2023Observed: 1485.57 ft at 8:15AM Sep 24, 2023Observed: 1485.57 ft at 8:30AM Sep 24, 2023Observed: 1485.57 ft at 8:45AM Sep 24, 2023Observed: 1485.57 ft at 9:00AM Sep 24, 2023Observed: 1485.57 ft at 9:15AM Sep 24, 2023Observed: 1485.57 ft at 9:30AM Sep 24, 2023Observed: 1485.57 ft at 9:45AM Sep 24, 2023Observed: 1485.57 ft at 10:00AM Sep 24, 2023Observed: 1485.57 ft at 10:15AM Sep 24, 2023Observed: 1485.55 ft at 10:30AM Sep 24, 2023Observed: 1485.57 ft at 10:45AM Sep 24, 2023Observed: 1485.55 ft at 11:00AM Sep 24, 2023Observed: 1485.58 ft at 11:15AM Sep 24, 2023Observed: 1485.58 ft at 11:30AM Sep 24, 2023Observed: 1485.58 ft at 11:45AM Sep 24, 2023Observed: 1485.57 ft at 12:00PM Sep 24, 2023Observed: 1485.57 ft at 12:15PM Sep 24, 2023Observed: 1485.58 ft at 12:30PM Sep 24, 2023Highest Observation: 1485.59 ft at 12:45PM Sep 24, 2023Observed: 1485.58 ft at 1:00PM Sep 24, 2023Observed: 1485.58 ft at 1:15PM Sep 24, 2023Observed: 1485.57 ft at 1:30PM Sep 24, 2023Observed: 1485.56 ft at 1:45PM Sep 24, 2023Observed: 1485.57 ft at 2:00PM Sep 24, 2023Observed: 1485.56 ft at 2:15PM Sep 24, 2023Highest Observation: 1485.59 ft at 2:30PM Sep 24, 2023Observed: 1485.55 ft at 2:45PM Sep 24, 2023Highest Observation: 1485.59 ft at 3:00PM Sep 24, 2023Highest Observation: 1485.59 ft at 3:15PM Sep 24, 2023Observed: 1485.56 ft at 3:30PM Sep 24, 2023Observed: 1485.58 ft at 3:45PM Sep 24, 2023Highest Observation: 1485.59 ft at 4:00PM Sep 24, 2023Observed: 1485.58 ft at 4:15PM Sep 24, 2023Highest Observation: 1485.59 ft at 4:30PM Sep 24, 2023Highest Observation: 1485.59 ft at 4:45PM Sep 24, 2023Highest Observation: 1485.59 ft at 5:00PM Sep 24, 2023Observed: 1485.58 ft at 5:15PM Sep 24, 2023Highest Observation: 1485.59 ft at 5:30PM Sep 24, 2023Highest Observation: 1485.59 ft at 5:45PM Sep 24, 2023Observed: 1485.57 ft at 6:00PM Sep 24, 2023Observed: 1485.58 ft at 6:15PM Sep 24, 2023Highest Observation: 1485.59 ft at 6:30PM Sep 24, 2023Observed: 1485.58 ft at 6:45PM Sep 24, 2023Observed: 1485.58 ft at 7:00PM Sep 24, 2023Highest Observation: 1485.59 ft at 7:15PM Sep 24, 2023Highest Observation: 1485.59 ft at 7:30PM Sep 24, 2023Highest Observation: 1485.59 ft at 7:45PM Sep 24, 2023Observed: 1485.58 ft at 8:00PM Sep 24, 2023Highest Observation: 1485.59 ft at 8:15PM Sep 24, 2023Highest Observation: 1485.59 ft at 8:30PM Sep 24, 2023Observed: 1485.58 ft at 8:45PM Sep 24, 2023Observed: 1485.58 ft at 9:00PM Sep 24, 2023Observed: 1485.58 ft at 9:15PM Sep 24, 2023Observed: 1485.58 ft at 9:30PM Sep 24, 2023Observed: 1485.58 ft at 9:45PM Sep 24, 2023Highest Observation: 1485.59 ft at 10:00PM Sep 24, 2023Observed: 1485.58 ft at 10:15PM Sep 24, 2023Observed: 1485.58 ft at 10:30PM Sep 24, 2023Highest Observation: 1485.59 ft at 10:45PM Sep 24, 2023Observed: 1485.58 ft at 11:00PM Sep 24, 2023Observed: 1485.58 ft at 11:15PM Sep 24, 2023Observed: 1485.58 ft at 11:30PM Sep 24, 2023Observed: 1485.58 ft at 11:45PM Sep 24, 2023Observed: 1485.58 ft at 12:00AM Sep 25, 2023Observed: 1485.58 ft at 12:15AM Sep 25, 2023Observed: 1485.58 ft at 12:30AM Sep 25, 2023Observed: 1485.58 ft at 12:45AM Sep 25, 2023Observed: 1485.57 ft at 1:00AM Sep 25, 2023Observed: 1485.58 ft at 1:15AM Sep 25, 2023Observed: 1485.58 ft at 1:30AM Sep 25, 2023Observed: 1485.58 ft at 1:45AM Sep 25, 2023Observed: 1485.58 ft at 2:00AM Sep 25, 2023Observed: 1485.58 ft at 2:15AM Sep 25, 2023Observed: 1485.58 ft at 2:30AM Sep 25, 2023Observed: 1485.58 ft at 2:45AM Sep 25, 2023Observed: 1485.58 ft at 3:00AM Sep 25, 2023Observed: 1485.58 ft at 3:15AM Sep 25, 2023Highest Observation: 1485.59 ft at 3:30AM Sep 25, 2023Highest Observation: 1485.59 ft at 3:45AM Sep 25, 2023Observed: 1485.58 ft at 4:00AM Sep 25, 2023Observed: 1485.58 ft at 4:15AM Sep 25, 2023Observed: 1485.58 ft at 4:30AM Sep 25, 2023Highest Observation: 1485.59 ft at 4:45AM Sep 25, 2023Observed: 1485.58 ft at 5:00AM Sep 25, 2023Highest Observation: 1485.59 ft at 5:15AM Sep 25, 2023South Dakota DANRTRES2(plotting HGIRG) Graph Created (5:35AM Sep 25, 2023)ObservedLatest observed value: 1485.59 ft at 5:15 AM CDT 25-Sep-2023. Flood Stage is 1495 ft
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Tabular Data (UTC)
Tabular Data (CDT)
XML Data
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Datum: NAVD88
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NOTE: No forecasts are available for this location

NOTE: Forecasts are not available for the Big Sioux River at Trent. Only observed stages are available for this point.

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Upstream Gauge - near Egan Upstream Gauge Downstream Gauge Downstream Gauge - above Dell Rapids
Flood Categories (in feet)
Major Flood Stage: 1499
Moderate Flood Stage: 1496
Flood Stage: 1495
Action Stage: 1494
Low Stage (in feet): -9999

Historic Crests
(1) 1,501.42 ft on 09/13/2019
(2) 1,500.00 ft on 03/24/2019
(3) 1,498.12 ft on 04/10/2023 (P)
(4) 1,498.00 ft on 04/26/2018
(5) 1,495.84 ft on 03/25/2018
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 1,498.12 ft on 04/10/2023 (P)
(2) 1,495.79 ft on 03/14/2020
(3) 1,501.42 ft on 09/13/2019
(4) 1,500.00 ft on 03/24/2019
(5) 1,498.00 ft on 04/26/2018
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:16
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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.
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1501 Water reaches the bottom of the bridge at the gauge site on 240th St.
1499 Several houses in Trent will be surrounded by water.
1498 Flood waters reach into the backyards of several houses in Trent. 240th St on the west side of Trent begins to flood.
1496 478th Avenue and 242nd Street begin to flood.
1495 Flooding begins to affect agricultural lands west of Trent along 240th Street. The river access road just east of the bridge on 240th begins to flood.
About This Location Collapse

Latitude: 43.906346° N, Longitude: 96.663093° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 1495 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 0.00 1495.00 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 Not Available Not Available  
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NWS Information
National Weather Service
Sioux Falls Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
(605) 330-4247
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