Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

  
 
Hydrograph River at a Glance Download
Big Sioux River at Sioux City Stage (ft)Flow (kcfs)Observed: 18.89 ft at 11:00AM May 13, 2018Observed: 18.9 ft at 11:15AM May 13, 2018Observed: 18.93 ft at 11:30AM May 13, 2018Observed: 18.92 ft at 11:45AM May 13, 2018Observed: 18.94 ft at 12:00PM May 13, 2018Observed: 18.96 ft at 12:15PM May 13, 2018Observed: 18.96 ft at 12:30PM May 13, 2018Observed: 18.98 ft at 12:45PM May 13, 2018Observed: 19 ft at 1:00PM May 13, 2018Observed: 19 ft at 1:15PM May 13, 2018Observed: 19.01 ft at 1:30PM May 13, 2018Observed: 19.03 ft at 1:45PM May 13, 2018Observed: 19.02 ft at 2:00PM May 13, 2018Observed: 19.05 ft at 2:15PM May 13, 2018Observed: 19.05 ft at 2:30PM May 13, 2018Observed: 19.05 ft at 2:45PM May 13, 2018Observed: 19.06 ft at 3:00PM May 13, 2018Observed: 19.07 ft at 3:15PM May 13, 2018Observed: 19.1 ft at 3:30PM May 13, 2018Observed: 19.09 ft at 3:45PM May 13, 2018Observed: 19.1 ft at 4:00PM May 13, 2018Observed: 19.12 ft at 4:15PM May 13, 2018Observed: 19.11 ft at 4:30PM May 13, 2018Observed: 19.14 ft at 4:45PM May 13, 2018Observed: 19.16 ft at 5:00PM May 13, 2018Observed: 19.16 ft at 5:15PM May 13, 2018Observed: 19.16 ft at 5:17PM May 13, 2018Observed: 19.16 ft at 5:30PM May 13, 2018Observed: 19.16 ft at 5:32PM May 13, 2018Observed: 19.19 ft at 5:45PM May 13, 2018Observed: 19.19 ft at 5:47PM May 13, 2018Observed: 19.15 ft at 6:00PM May 13, 2018Observed: 19.18 ft at 6:15PM May 13, 2018Observed: 19.19 ft at 6:30PM May 13, 2018Observed: 19.19 ft at 6:45PM May 13, 2018Observed: 19.2 ft at 7:00PM May 13, 2018Observed: 19.22 ft at 7:15PM May 13, 2018Observed: 19.24 ft at 7:30PM May 13, 2018Observed: 19.22 ft at 7:45PM May 13, 2018Observed: 19.25 ft at 8:00PM May 13, 2018Observed: 19.26 ft at 8:15PM May 13, 2018Observed: 19.25 ft at 8:30PM May 13, 2018Observed: 19.27 ft at 8:45PM May 13, 2018Observed: 19.28 ft at 9:00PM May 13, 2018Observed: 19.3 ft at 9:15PM May 13, 2018Observed: 19.27 ft at 9:30PM May 13, 2018Observed: 19.31 ft at 9:45PM May 13, 2018Observed: 19.31 ft at 10:00PM May 13, 2018Observed: 19.32 ft at 10:15PM May 13, 2018Observed: 19.31 ft at 10:30PM May 13, 2018Observed: 19.33 ft at 10:45PM May 13, 2018Observed: 19.35 ft at 11:00PM May 13, 2018Observed: 19.35 ft at 11:15PM May 13, 2018Observed: 19.33 ft at 11:30PM May 13, 2018Observed: 19.36 ft at 11:45PM May 13, 2018Observed: 19.36 ft at 12:00AM May 14, 2018Observed: 19.37 ft at 12:15AM May 14, 2018Observed: 19.38 ft at 12:30AM May 14, 2018Observed: 19.4 ft at 12:45AM May 14, 2018Observed: 19.41 ft at 1:00AM May 14, 2018Observed: 19.43 ft at 1:15AM May 14, 2018Observed: 19.43 ft at 1:17AM May 14, 2018Observed: 19.42 ft at 1:30AM May 14, 2018Observed: 19.42 ft at 1:32AM May 14, 2018Observed: 19.41 ft at 1:45AM May 14, 2018Observed: 19.41 ft at 1:47AM May 14, 2018Observed: 19.42 ft at 2:00AM May 14, 2018Observed: 19.46 ft at 2:15AM May 14, 2018Observed: 19.48 ft at 2:30AM May 14, 2018Observed: 19.48 ft at 2:45AM May 14, 2018Observed: 19.47 ft at 3:00AM May 14, 2018Observed: 19.49 ft at 3:15AM May 14, 2018Observed: 19.48 ft at 3:30AM May 14, 2018Observed: 19.53 ft at 3:45AM May 14, 2018Observed: 19.51 ft at 4:00AM May 14, 2018Observed: 19.51 ft at 4:15AM May 14, 2018Observed: 19.54 ft at 4:30AM May 14, 2018Observed: 19.57 ft at 4:45AM May 14, 2018Observed: 19.57 ft at 5:00AM May 14, 2018Observed: 19.59 ft at 5:15AM May 14, 2018Observed: 19.59 ft at 5:30AM May 14, 2018Observed: 19.62 ft at 5:45AM May 14, 2018Observed: 19.61 ft at 6:00AM May 14, 2018Observed: 19.62 ft at 6:15AM May 14, 2018Observed: 19.64 ft at 6:30AM May 14, 2018Observed: 19.68 ft at 6:45AM May 14, 2018Observed: 19.67 ft at 7:00AM May 14, 2018Observed: 19.69 ft at 7:15AM May 14, 2018Observed: 19.68 ft at 7:30AM May 14, 2018Observed: 19.72 ft at 7:45AM May 14, 2018Observed: 19.72 ft at 8:00AM May 14, 2018Observed: 19.74 ft at 8:15AM May 14, 2018Observed: 19.75 ft at 8:30AM May 14, 2018Observed: 19.76 ft at 8:45AM May 14, 2018Observed: 19.78 ft at 9:00AM May 14, 2018Observed: 19.78 ft at 9:15AM May 14, 2018Observed: 19.78 ft at 9:17AM May 14, 2018Observed: 19.8 ft at 9:30AM May 14, 2018Observed: 19.8 ft at 9:32AM May 14, 2018Observed: 19.79 ft at 9:45AM May 14, 2018Observed: 19.79 ft at 9:47AM May 14, 2018Observed: 19.82 ft at 10:00AM May 14, 2018Observed: 19.85 ft at 10:15AM May 14, 2018Observed: 19.86 ft at 10:30AM May 14, 2018Observed: 19.86 ft at 10:45AM May 14, 2018Observed: 19.87 ft at 11:00AM May 14, 2018Observed: 19.87 ft at 11:15AM May 14, 2018Observed: 19.89 ft at 11:30AM May 14, 2018Observed: 19.92 ft at 11:45AM May 14, 2018Observed: 19.94 ft at 12:00PM May 14, 2018Observed: 19.92 ft at 12:15PM May 14, 2018Observed: 19.94 ft at 12:30PM May 14, 2018Observed: 19.98 ft at 12:45PM May 14, 2018Observed: 20.01 ft at 1:00PM May 14, 2018Observed: 20.01 ft at 1:15PM May 14, 2018Observed: 20.02 ft at 1:30PM May 14, 2018Observed: 20.04 ft at 1:45PM May 14, 2018Observed: 20.05 ft at 2:00PM May 14, 2018Observed: 20.06 ft at 2:15PM May 14, 2018Observed: 20.07 ft at 2:30PM May 14, 2018Observed: 20.09 ft at 2:45PM May 14, 2018Observed: 20.09 ft at 3:00PM May 14, 2018Observed: 20.1 ft at 3:15PM May 14, 2018Observed: 20.11 ft at 3:30PM May 14, 2018Observed: 20.12 ft at 3:45PM May 14, 2018Observed: 20.12 ft at 4:00PM May 14, 2018Observed: 20.14 ft at 4:15PM May 14, 2018Observed: 20.15 ft at 4:30PM May 14, 2018Observed: 20.17 ft at 4:45PM May 14, 2018Observed: 20.17 ft at 5:00PM May 14, 2018Observed: 20.2 ft at 5:15PM May 14, 2018Observed: 20.18 ft at 5:30PM May 14, 2018Observed: 20.18 ft at 5:31PM May 14, 2018Observed: 20.22 ft at 5:45PM May 14, 2018Observed: 20.22 ft at 5:46PM May 14, 2018Observed: 20.23 ft at 6:00PM May 14, 2018Observed: 20.23 ft at 6:01PM May 14, 2018Observed: 20.23 ft at 6:15PM May 14, 2018Observed: 20.23 ft at 6:30PM May 14, 2018Observed: 20.25 ft at 6:45PM May 14, 2018Observed: 20.25 ft at 7:00PM May 14, 2018Observed: 20.24 ft at 7:15PM May 14, 2018Observed: 20.25 ft at 7:30PM May 14, 2018Observed: 20.27 ft at 7:45PM May 14, 2018Observed: 20.29 ft at 8:00PM May 14, 2018Observed: 20.28 ft at 8:15PM May 14, 2018Observed: 20.3 ft at 8:30PM May 14, 2018Observed: 20.29 ft at 8:45PM May 14, 2018Observed: 20.31 ft at 9:00PM May 14, 2018Observed: 20.31 ft at 9:15PM May 14, 2018Observed: 20.3 ft at 9:30PM May 14, 2018Observed: 20.33 ft at 9:45PM May 14, 2018Observed: 20.31 ft at 10:00PM May 14, 2018Observed: 20.34 ft at 10:15PM May 14, 2018Observed: 20.34 ft at 10:30PM May 14, 2018Observed: 20.33 ft at 10:45PM May 14, 2018Observed: 20.34 ft at 11:00PM May 14, 2018Observed: 20.36 ft at 11:15PM May 14, 2018Observed: 20.37 ft at 11:30PM May 14, 2018Observed: 20.34 ft at 11:45PM May 14, 2018Observed: 20.35 ft at 12:00AM May 15, 2018Observed: 20.35 ft at 12:15AM May 15, 2018Observed: 20.35 ft at 12:30AM May 15, 2018Observed: 20.37 ft at 12:45AM May 15, 2018Observed: 20.35 ft at 1:00AM May 15, 2018Observed: 20.38 ft at 1:15AM May 15, 2018Observed: 20.38 ft at 1:30AM May 15, 2018Observed: 20.38 ft at 1:32AM May 15, 2018Observed: 20.4 ft at 1:45AM May 15, 2018Observed: 20.4 ft at 1:47AM May 15, 2018Observed: 20.37 ft at 2:00AM May 15, 2018Observed: 20.37 ft at 2:02AM May 15, 2018Observed: 20.41 ft at 2:15AM May 15, 2018Observed: 20.39 ft at 2:30AM May 15, 2018Observed: 20.38 ft at 2:45AM May 15, 2018Observed: 20.4 ft at 3:00AM May 15, 2018Observed: 20.39 ft at 3:15AM May 15, 2018Observed: 20.39 ft at 3:30AM May 15, 2018Observed: 20.41 ft at 3:45AM May 15, 2018Observed: 20.4 ft at 4:00AM May 15, 2018Observed: 20.4 ft at 4:15AM May 15, 2018Observed: 20.41 ft at 4:30AM May 15, 2018Observed: 20.42 ft at 4:45AM May 15, 2018Observed: 20.41 ft at 5:00AM May 15, 2018Observed: 20.4 ft at 5:15AM May 15, 2018Observed: 20.4 ft at 5:30AM May 15, 2018Observed: 20.41 ft at 5:45AM May 15, 2018Observed: 20.4 ft at 6:00AM May 15, 2018Observed: 20.4 ft at 6:15AM May 15, 2018Observed: 20.4 ft at 6:30AM May 15, 2018Observed: 20.4 ft at 6:45AM May 15, 2018Observed: 20.43 ft at 7:00AM May 15, 2018Observed: 20.41 ft at 7:15AM May 15, 2018Observed: 20.43 ft at 7:30AM May 15, 2018Observed: 20.41 ft at 7:45AM May 15, 2018Observed: 20.43 ft at 8:00AM May 15, 2018Observed: 20.41 ft at 8:15AM May 15, 2018Observed: 20.43 ft at 8:30AM May 15, 2018Observed: 20.42 ft at 8:45AM May 15, 2018Observed: 20.4 ft at 9:00AM May 15, 2018Observed: 20.41 ft at 9:15AM May 15, 2018Observed: 20.41 ft at 9:30AM May 15, 2018Observed: 20.41 ft at 9:31AM May 15, 2018Observed: 20.41 ft at 9:45AM May 15, 2018Observed: 20.41 ft at 9:46AM May 15, 2018Observed: 20.42 ft at 10:00AM May 15, 2018Observed: 20.42 ft at 10:01AM May 15, 2018Observed: 20.42 ft at 10:15AM May 15, 2018Observed: 20.43 ft at 10:30AM May 15, 2018Observed: 20.42 ft at 10:45AM May 15, 2018Observed: 20.42 ft at 11:00AM May 15, 2018Observed: 20.43 ft at 11:15AM May 15, 2018Observed: 20.41 ft at 11:30AM May 15, 2018Observed: 20.43 ft at 11:45AM May 15, 2018Observed: 20.42 ft at 12:00PM May 15, 2018Observed: 20.42 ft at 12:15PM May 15, 2018Highest Observation: 20.44 ft at 12:30PM May 15, 2018Observed: 20.41 ft at 12:45PM May 15, 2018Observed: 20.41 ft at 1:00PM May 15, 2018Observed: 20.41 ft at 1:15PM May 15, 2018Observed: 20.42 ft at 1:30PM May 15, 2018Observed: 20.42 ft at 1:45PM May 15, 2018Observed: 20.38 ft at 2:00PM May 15, 2018Observed: 20.41 ft at 2:15PM May 15, 2018Observed: 20.39 ft at 2:30PM May 15, 2018Observed: 20.39 ft at 2:45PM May 15, 2018Observed: 20.41 ft at 3:00PM May 15, 2018Observed: 20.38 ft at 3:15PM May 15, 2018Observed: 20.38 ft at 3:30PM May 15, 2018Observed: 20.37 ft at 3:45PM May 15, 2018Observed: 20.4 ft at 4:00PM May 15, 2018Observed: 20.4 ft at 4:15PM May 15, 2018Observed: 20.36 ft at 4:30PM May 15, 2018Observed: 20.37 ft at 4:45PM May 15, 2018Observed: 20.39 ft at 5:00PM May 15, 2018Observed: 20.37 ft at 5:15PM May 15, 2018Observed: 20.38 ft at 5:30PM May 15, 2018Observed: 20.37 ft at 5:45PM May 15, 2018Observed: 20.37 ft at 6:00PM May 15, 2018Observed: 20.36 ft at 6:15PM May 15, 2018Observed: 20.37 ft at 6:30PM May 15, 2018Observed: 20.35 ft at 6:45PM May 15, 2018Observed: 20.35 ft at 7:00PM May 15, 2018Observed: 20.34 ft at 7:15PM May 15, 2018Observed: 20.35 ft at 7:30PM May 15, 2018Observed: 20.34 ft at 7:45PM May 15, 2018Observed: 20.34 ft at 8:00PM May 15, 2018Observed: 20.33 ft at 8:15PM May 15, 2018Observed: 20.34 ft at 8:30PM May 15, 2018Observed: 20.33 ft at 8:45PM May 15, 2018Observed: 20.32 ft at 9:00PM May 15, 2018Observed: 20.33 ft at 9:15PM May 15, 2018Observed: 20.32 ft at 9:30PM May 15, 2018Observed: 20.3 ft at 9:45PM May 15, 2018Observed: 20.3 ft at 10:00PM May 15, 2018Observed: 20.29 ft at 10:15PM May 15, 2018Observed: 20.3 ft at 10:30PM May 15, 2018Observed: 20.29 ft at 10:45PM May 15, 2018Observed: 20.28 ft at 11:00PM May 15, 2018Observed: 20.28 ft at 11:15PM May 15, 2018Observed: 20.28 ft at 11:30PM May 15, 2018Observed: 20.26 ft at 11:45PM May 15, 2018Observed: 20.27 ft at 12:00AM May 16, 2018Observed: 20.27 ft at 12:15AM May 16, 2018Observed: 20.28 ft at 12:30AM May 16, 2018Observed: 20.25 ft at 12:45AM May 16, 2018Observed: 20.22 ft at 1:00AM May 16, 2018Observed: 20.23 ft at 1:15AM May 16, 2018Observed: 20.21 ft at 1:30AM May 16, 2018Observed: 20.21 ft at 1:32AM May 16, 2018Observed: 20.21 ft at 1:45AM May 16, 2018Observed: 20.21 ft at 1:47AM May 16, 2018Observed: 20.22 ft at 2:00AM May 16, 2018Observed: 20.22 ft at 2:02AM May 16, 2018Observed: 20.22 ft at 2:15AM May 16, 2018Observed: 20.2 ft at 2:30AM May 16, 2018Observed: 20.2 ft at 2:45AM May 16, 2018Observed: 20.19 ft at 3:00AM May 16, 2018Observed: 20.19 ft at 3:15AM May 16, 2018Observed: 20.19 ft at 3:30AM May 16, 2018Observed: 20.17 ft at 3:45AM May 16, 2018Observed: 20.17 ft at 4:00AM May 16, 2018Observed: 20.16 ft at 4:15AM May 16, 2018Observed: 20.16 ft at 4:30AM May 16, 2018Observed: 20.17 ft at 4:45AM May 16, 2018Observed: 20.15 ft at 5:00AM May 16, 2018Observed: 20.15 ft at 5:15AM May 16, 2018Observed: 20.14 ft at 5:30AM May 16, 2018Observed: 20.14 ft at 5:45AM May 16, 2018Observed: 20.12 ft at 6:00AM May 16, 2018Observed: 20.12 ft at 6:15AM May 16, 2018Observed: 20.12 ft at 6:30AM May 16, 2018Observed: 20.1 ft at 6:45AM May 16, 2018Observed: 20.11 ft at 7:00AM May 16, 2018Observed: 20.09 ft at 7:15AM May 16, 2018Observed: 20.08 ft at 7:30AM May 16, 2018Observed: 20.08 ft at 7:45AM May 16, 2018Observed: 20.09 ft at 8:00AM May 16, 2018Observed: 20.07 ft at 8:15AM May 16, 2018Observed: 20.08 ft at 8:30AM May 16, 2018Observed: 20.07 ft at 8:45AM May 16, 2018Observed: 20.07 ft at 9:00AM May 16, 2018Observed: 20.05 ft at 9:15AM May 16, 2018Observed: 20.04 ft at 9:30AM May 16, 2018Observed: 20.04 ft at 9:31AM May 16, 2018Observed: 20.04 ft at 9:45AM May 16, 2018Observed: 20.04 ft at 9:46AM May 16, 2018Observed: 20.05 ft at 10:00AM May 16, 2018Observed: 20.05 ft at 10:01AM May 16, 2018Observed: 20.05 ft at 10:15AM May 16, 2018Observed: 20.03 ft at 10:30AM May 16, 2018Observed: 20.04 ft at 10:45AM May 16, 2018Observed: 20.03 ft at 11:00AM May 16, 2018Observed: 20.03 ft at 11:15AM May 16, 2018Observed: 20 ft at 11:30AM May 16, 2018Observed: 20 ft at 11:45AM May 16, 2018Observed: 20.02 ft at 12:00PM May 16, 2018Observed: 20.01 ft at 12:15PM May 16, 2018Observed: 20 ft at 12:30PM May 16, 2018Observed: 19.99 ft at 12:45PM May 16, 2018Observed: 19.98 ft at 1:00PM May 16, 2018Observed: 19.98 ft at 1:15PM May 16, 2018Observed: 19.96 ft at 1:30PM May 16, 2018Observed: 19.97 ft at 1:45PM May 16, 2018Observed: 19.97 ft at 2:00PM May 16, 2018Observed: 19.96 ft at 2:15PM May 16, 2018Observed: 19.94 ft at 2:30PM May 16, 2018Observed: 19.94 ft at 2:45PM May 16, 2018Observed: 19.95 ft at 3:00PM May 16, 2018Observed: 19.94 ft at 3:15PM May 16, 2018Observed: 19.94 ft at 3:30PM May 16, 2018Observed: 19.95 ft at 3:45PM May 16, 2018Observed: 19.94 ft at 4:00PM May 16, 2018Observed: 19.94 ft at 4:15PM May 16, 2018Observed: 19.91 ft at 4:30PM May 16, 2018Observed: 19.92 ft at 4:45PM May 16, 2018Observed: 19.89 ft at 5:00PM May 16, 2018Observed: 19.91 ft at 5:15PM May 16, 2018Observed: 19.9 ft at 5:30PM May 16, 2018Observed: 19.9 ft at 5:31PM May 16, 2018Observed: 19.89 ft at 5:45PM May 16, 2018Observed: 19.89 ft at 5:46PM May 16, 2018Observed: 19.93 ft at 6:00PM May 16, 2018Observed: 19.93 ft at 6:01PM May 16, 2018Observed: 19.88 ft at 6:15PM May 16, 2018Observed: 19.92 ft at 6:30PM May 16, 2018Observed: 19.9 ft at 6:45PM May 16, 2018Observed: 19.88 ft at 7:00PM May 16, 2018Observed: 19.89 ft at 7:15PM May 16, 2018Observed: 19.87 ft at 7:30PM May 16, 2018Observed: 19.86 ft at 7:45PM May 16, 2018Observed: 19.87 ft at 8:00PM May 16, 2018Observed: 19.84 ft at 8:15PM May 16, 2018Observed: 19.85 ft at 8:30PM May 16, 2018Observed: 19.84 ft at 8:45PM May 16, 2018Observed: 19.85 ft at 9:00PM May 16, 2018Observed: 19.84 ft at 9:15PM May 16, 2018Observed: 19.82 ft at 9:30PM May 16, 2018Observed: 19.83 ft at 9:45PM May 16, 2018Observed: 19.81 ft at 10:00PM May 16, 2018Observed: 19.84 ft at 10:15PM May 16, 2018Observed: 19.81 ft at 10:30PM May 16, 2018Observed: 19.81 ft at 10:45PM May 16, 2018Observed: 19.8 ft at 11:00PM May 16, 2018Observed: 19.79 ft at 11:15PM May 16, 2018Observed: 19.78 ft at 11:30PM May 16, 2018Observed: 19.78 ft at 11:45PM May 16, 2018Observed: 19.77 ft at 12:00AM May 17, 2018Observed: 19.76 ft at 12:15AM May 17, 2018Observed: 19.75 ft at 12:30AM May 17, 2018Observed: 19.73 ft at 12:45AM May 17, 2018Observed: 19.74 ft at 1:00AM May 17, 2018Observed: 19.75 ft at 1:15AM May 17, 2018Observed: 19.74 ft at 1:30AM May 17, 2018Observed: 19.74 ft at 1:31AM May 17, 2018Observed: 19.74 ft at 1:45AM May 17, 2018Observed: 19.74 ft at 1:46AM May 17, 2018Observed: 19.73 ft at 2:00AM May 17, 2018Observed: 19.73 ft at 2:01AM May 17, 2018Observed: 19.71 ft at 2:15AM May 17, 2018Observed: 19.71 ft at 2:30AM May 17, 2018Observed: 19.71 ft at 2:45AM May 17, 2018Observed: 19.7 ft at 3:00AM May 17, 2018Observed: 19.71 ft at 3:15AM May 17, 2018Observed: 19.7 ft at 3:30AM May 17, 2018Observed: 19.69 ft at 3:45AM May 17, 2018Observed: 19.68 ft at 4:00AM May 17, 2018Observed: 19.68 ft at 4:15AM May 17, 2018Observed: 19.69 ft at 4:30AM May 17, 2018Observed: 19.68 ft at 4:45AM May 17, 2018Observed: 19.68 ft at 5:00AM May 17, 2018Observed: 19.68 ft at 5:15AM May 17, 2018Observed: 19.67 ft at 5:30AM May 17, 2018Observed: 19.67 ft at 5:45AM May 17, 2018Observed: 19.66 ft at 6:00AM May 17, 2018Observed: 19.64 ft at 6:15AM May 17, 2018Observed: 19.66 ft at 6:30AM May 17, 2018Observed: 19.65 ft at 6:45AM May 17, 2018Observed: 19.65 ft at 7:00AM May 17, 2018Observed: 19.64 ft at 7:15AM May 17, 2018Observed: 19.64 ft at 7:30AM May 17, 2018Observed: 19.64 ft at 7:45AM May 17, 2018Observed: 19.64 ft at 8:00AM May 17, 2018Observed: 19.63 ft at 8:15AM May 17, 2018Observed: 19.62 ft at 8:30AM May 17, 2018Observed: 19.62 ft at 8:45AM May 17, 2018Observed: 19.62 ft at 9:00AM May 17, 2018Observed: 19.59 ft at 9:15AM May 17, 2018Observed: 19.6 ft at 9:30AM May 17, 2018Observed: 19.6 ft at 9:32AM May 17, 2018Observed: 19.61 ft at 9:45AM May 17, 2018Observed: 19.61 ft at 9:47AM May 17, 2018Observed: 19.59 ft at 10:00AM May 17, 2018Observed: 19.59 ft at 10:02AM May 17, 2018Observed: 19.61 ft at 10:15AM May 17, 2018Observed: 19.59 ft at 10:30AM May 17, 2018Observed: 19.6 ft at 10:45AM May 17, 2018Observed: 19.59 ft at 11:00AM May 17, 2018Observed: 19.59 ft at 11:15AM May 17, 2018Observed: 19.59 ft at 11:30AM May 17, 2018Observed: 19.59 ft at 11:45AM May 17, 2018Observed: 19.57 ft at 12:00PM May 17, 2018Observed: 19.58 ft at 12:15PM May 17, 2018Observed: 19.57 ft at 12:30PM May 17, 2018Observed: 19.57 ft at 12:45PM May 17, 2018Observed: 19.56 ft at 1:00PM May 17, 2018Observed: 19.55 ft at 1:15PM May 17, 2018Observed: 19.57 ft at 1:30PM May 17, 2018Observed: 19.55 ft at 1:45PM May 17, 2018Observed: 19.53 ft at 2:00PM May 17, 2018Observed: 19.55 ft at 2:15PM May 17, 2018Observed: 19.54 ft at 2:30PM May 17, 2018Observed: 19.53 ft at 2:45PM May 17, 2018Observed: 19.55 ft at 3:00PM May 17, 2018Observed: 19.53 ft at 3:15PM May 17, 2018Observed: 19.49 ft at 3:30PM May 17, 2018Observed: 19.51 ft at 3:45PM May 17, 2018Observed: 19.49 ft at 4:00PM May 17, 2018Observed: 19.51 ft at 4:15PM May 17, 2018Observed: 19.5 ft at 4:30PM May 17, 2018Observed: 19.51 ft at 4:45PM May 17, 2018Observed: 19.5 ft at 5:00PM May 17, 2018Observed: 19.46 ft at 5:15PM May 17, 2018Observed: 19.45 ft at 5:30PM May 17, 2018Observed: 19.45 ft at 5:32PM May 17, 2018Observed: 19.49 ft at 5:45PM May 17, 2018Observed: 19.49 ft at 5:47PM May 17, 2018Observed: 19.48 ft at 6:00PM May 17, 2018Observed: 19.48 ft at 6:02PM May 17, 2018Observed: 19.47 ft at 6:15PM May 17, 2018Observed: 19.47 ft at 6:30PM May 17, 2018Observed: 19.45 ft at 6:45PM May 17, 2018Observed: 19.48 ft at 7:00PM May 17, 2018Observed: 19.46 ft at 7:15PM May 17, 2018Observed: 19.44 ft at 7:30PM May 17, 2018Observed: 19.44 ft at 7:45PM May 17, 2018Observed: 19.42 ft at 8:00PM May 17, 2018Observed: 19.42 ft at 8:15PM May 17, 2018Observed: 19.43 ft at 8:30PM May 17, 2018Observed: 19.42 ft at 8:45PM May 17, 2018Observed: 19.43 ft at 9:00PM May 17, 2018Observed: 19.42 ft at 9:15PM May 17, 2018Observed: 19.4 ft at 9:30PM May 17, 2018Observed: 19.4 ft at 9:45PM May 17, 2018Observed: 19.4 ft at 10:00PM May 17, 2018Observed: 19.4 ft at 10:15PM May 17, 2018Observed: 19.39 ft at 10:30PM May 17, 2018Observed: 19.4 ft at 10:45PM May 17, 2018Observed: 19.38 ft at 11:00PM May 17, 2018Observed: 19.37 ft at 11:15PM May 17, 2018Observed: 19.37 ft at 11:30PM May 17, 2018Observed: 19.37 ft at 11:45PM May 17, 2018Observed: 19.38 ft at 12:00AM May 18, 2018Observed: 19.36 ft at 12:15AM May 18, 2018Observed: 19.35 ft at 12:30AM May 18, 2018Observed: 19.37 ft at 12:45AM May 18, 2018Observed: 19.34 ft at 1:00AM May 18, 2018Observed: 19.37 ft at 1:15AM May 18, 2018Observed: 19.34 ft at 1:30AM May 18, 2018Observed: 19.33 ft at 1:45AM May 18, 2018Observed: 19.33 ft at 1:46AM May 18, 2018Observed: 19.34 ft at 2:00AM May 18, 2018Observed: 19.34 ft at 2:01AM May 18, 2018Observed: 19.33 ft at 2:15AM May 18, 2018Observed: 19.33 ft at 2:16AM May 18, 2018Observed: 19.35 ft at 2:30AM May 18, 2018Observed: 19.32 ft at 2:45AM May 18, 2018Observed: 19.32 ft at 3:00AM May 18, 2018Observed: 19.31 ft at 3:15AM May 18, 2018Observed: 19.32 ft at 3:30AM May 18, 2018Observed: 19.3 ft at 3:45AM May 18, 2018Observed: 19.31 ft at 4:00AM May 18, 2018Observed: 19.31 ft at 4:15AM May 18, 2018Observed: 19.29 ft at 4:30AM May 18, 2018Observed: 19.3 ft at 4:45AM May 18, 2018Observed: 19.29 ft at 5:00AM May 18, 2018Observed: 19.29 ft at 5:15AM May 18, 2018Observed: 19.28 ft at 5:30AM May 18, 2018Observed: 19.27 ft at 5:45AM May 18, 2018Observed: 19.29 ft at 6:00AM May 18, 2018Observed: 19.28 ft at 6:15AM May 18, 2018Observed: 19.28 ft at 6:30AM May 18, 2018Observed: 19.28 ft at 6:45AM May 18, 2018Observed: 19.28 ft at 7:00AM May 18, 2018Observed: 19.26 ft at 7:15AM May 18, 2018Observed: 19.26 ft at 7:30AM May 18, 2018Observed: 19.26 ft at 7:45AM May 18, 2018Observed: 19.26 ft at 8:00AM May 18, 2018Observed: 19.24 ft at 8:15AM May 18, 2018Observed: 19.24 ft at 8:30AM May 18, 2018Observed: 19.25 ft at 8:45AM May 18, 2018Observed: 19.23 ft at 9:00AM May 18, 2018Observed: 19.23 ft at 9:15AM May 18, 2018Observed: 19.23 ft at 9:30AM May 18, 2018Observed: 19.23 ft at 9:45AM May 18, 2018Observed: 19.23 ft at 9:46AM May 18, 2018Observed: 19.23 ft at 10:00AM May 18, 2018Observed: 19.23 ft at 10:01AM May 18, 2018Observed: 19.21 ft at 10:15AM May 18, 2018Observed: 19.21 ft at 10:16AM May 18, 2018Observed: 19.22 ft at 10:30AM May 18, 2018Observed: 19.21 ft at 10:45AM May 18, 2018Observed: 19.21 ft at 11:00AM May 18, 2018Observed: 19.21 ft at 11:15AM May 18, 2018Observed: 19.19 ft at 11:30AM May 18, 2018Observed: 19.19 ft at 11:45AM May 18, 2018Observed: 19.17 ft at 12:00PM May 18, 2018Observed: 19.2 ft at 12:15PM May 18, 2018Observed: 19.19 ft at 12:30PM May 18, 2018Observed: 19.15 ft at 12:45PM May 18, 2018Observed: 19.18 ft at 1:00PM May 18, 2018Observed: 19.19 ft at 1:15PM May 18, 2018Observed: 19.18 ft at 1:30PM May 18, 2018Observed: 19.18 ft at 1:45PM May 18, 2018Observed: 19.19 ft at 2:00PM May 18, 2018Observed: 19.16 ft at 2:15PM May 18, 2018Observed: 19.16 ft at 2:30PM May 18, 2018Observed: 19.17 ft at 2:45PM May 18, 2018Observed: 19.14 ft at 3:00PM May 18, 2018Observed: 19.18 ft at 3:15PM May 18, 2018Observed: 19.17 ft at 3:30PM May 18, 2018Observed: 19.18 ft at 3:45PM May 18, 2018Observed: 19.17 ft at 4:00PM May 18, 2018Observed: 19.15 ft at 4:15PM May 18, 2018Observed: 19.15 ft at 4:30PM May 18, 2018Observed: 19.15 ft at 4:45PM May 18, 2018Observed: 19.16 ft at 5:00PM May 18, 2018Observed: 19.15 ft at 5:15PM May 18, 2018Observed: 19.15 ft at 5:30PM May 18, 2018Observed: 19.14 ft at 5:45PM May 18, 2018Observed: 19.14 ft at 5:46PM May 18, 2018Observed: 19.11 ft at 6:00PM May 18, 2018Observed: 19.11 ft at 6:01PM May 18, 2018Observed: 19.13 ft at 6:15PM May 18, 2018Observed: 19.13 ft at 6:16PM May 18, 2018Observed: 19.11 ft at 6:30PM May 18, 2018Observed: 19.12 ft at 6:45PM May 18, 2018Observed: 19.1 ft at 7:00PM May 18, 2018Observed: 19.11 ft at 7:15PM May 18, 2018Observed: 19.11 ft at 7:30PM May 18, 2018Observed: 19.1 ft at 7:45PM May 18, 2018Observed: 19.09 ft at 8:00PM May 18, 2018Observed: 19.11 ft at 8:15PM May 18, 2018Observed: 19.1 ft at 8:30PM May 18, 2018Observed: 19.09 ft at 8:45PM May 18, 2018Observed: 19.08 ft at 9:00PM May 18, 2018Observed: 19.06 ft at 9:15PM May 18, 2018Observed: 19.07 ft at 9:30PM May 18, 2018Observed: 19.06 ft at 9:45PM May 18, 2018Observed: 19.07 ft at 10:00PM May 18, 2018Observed: 19.05 ft at 10:15PM May 18, 2018Observed: 19.06 ft at 10:30PM May 18, 2018Observed: 19.04 ft at 10:45PM May 18, 2018Observed: 19.05 ft at 11:00PM May 18, 2018Observed: 19.05 ft at 11:15PM May 18, 2018Observed: 19.02 ft at 11:30PM May 18, 2018Observed: 19.02 ft at 11:45PM May 18, 2018Observed: 19.04 ft at 12:00AM May 19, 2018Observed: 19.04 ft at 12:15AM May 19, 2018Observed: 19.03 ft at 12:30AM May 19, 2018Observed: 19.01 ft at 12:45AM May 19, 2018Observed: 19 ft at 1:00AM May 19, 2018Observed: 18.99 ft at 1:15AM May 19, 2018Observed: 18.99 ft at 1:30AM May 19, 2018Observed: 19 ft at 1:45AM May 19, 2018Observed: 19 ft at 1:47AM May 19, 2018Observed: 19 ft at 2:00AM May 19, 2018Observed: 19 ft at 2:02AM May 19, 2018Observed: 19 ft at 2:15AM May 19, 2018Observed: 19 ft at 2:17AM May 19, 2018Observed: 18.97 ft at 2:30AM May 19, 2018Observed: 18.98 ft at 2:45AM May 19, 2018Observed: 18.99 ft at 3:00AM May 19, 2018Observed: 18.98 ft at 3:15AM May 19, 2018Observed: 18.98 ft at 3:30AM May 19, 2018Observed: 18.98 ft at 3:45AM May 19, 2018Observed: 18.96 ft at 4:00AM May 19, 2018Observed: 18.96 ft at 4:15AM May 19, 2018Observed: 18.95 ft at 4:30AM May 19, 2018Observed: 18.96 ft at 4:45AM May 19, 2018Observed: 18.97 ft at 5:00AM May 19, 2018Observed: 18.96 ft at 5:15AM May 19, 2018Observed: 18.95 ft at 5:30AM May 19, 2018Observed: 18.93 ft at 5:45AM May 19, 2018Observed: 18.93 ft at 6:00AM May 19, 2018Observed: 18.93 ft at 6:15AM May 19, 2018Observed: 18.93 ft at 6:30AM May 19, 2018Observed: 18.94 ft at 6:45AM May 19, 2018Observed: 18.91 ft at 7:00AM May 19, 2018Observed: 18.91 ft at 7:15AM May 19, 2018Observed: 18.91 ft at 7:30AM May 19, 2018Observed: 18.92 ft at 7:45AM May 19, 2018Observed: 18.9 ft at 8:00AM May 19, 2018Observed: 18.92 ft at 8:15AM May 19, 2018Observed: 18.91 ft at 8:30AM May 19, 2018Observed: 18.89 ft at 8:45AM May 19, 2018Observed: 18.89 ft at 9:00AM May 19, 2018Observed: 18.88 ft at 9:15AM May 19, 2018Observed: 18.88 ft at 9:30AM May 19, 2018Observed: 18.87 ft at 9:45AM May 19, 2018Observed: 18.87 ft at 9:46AM May 19, 2018Observed: 18.87 ft at 10:00AM May 19, 2018Observed: 18.87 ft at 10:01AM May 19, 2018Observed: 18.89 ft at 10:15AM May 19, 2018Observed: 18.89 ft at 10:16AM May 19, 2018Observed: 18.9 ft at 10:30AM May 19, 2018Observed: 18.89 ft at 10:45AM May 19, 2018Observed: 18.85 ft at 11:00AM May 19, 2018Observed: 18.85 ft at 11:15AM May 19, 2018Observed: 18.86 ft at 11:30AM May 19, 2018Observed: 18.85 ft at 11:45AM May 19, 2018Observed: 18.85 ft at 12:00PM May 19, 2018Observed: 18.83 ft at 12:15PM May 19, 2018Observed: 18.85 ft at 12:30PM May 19, 2018Observed: 18.84 ft at 12:45PM May 19, 2018Observed: 18.81 ft at 1:00PM May 19, 2018Observed: 18.83 ft at 1:15PM May 19, 2018Observed: 18.83 ft at 1:30PM May 19, 2018Observed: 18.83 ft at 1:45PM May 19, 2018Observed: 18.81 ft at 2:00PM May 19, 2018Observed: 18.81 ft at 2:15PM May 19, 2018Observed: 18.8 ft at 2:30PM May 19, 2018Observed: 18.79 ft at 2:45PM May 19, 2018Observed: 18.78 ft at 3:00PM May 19, 2018Observed: 18.79 ft at 3:15PM May 19, 2018Observed: 18.8 ft at 3:30PM May 19, 2018Observed: 18.79 ft at 3:45PM May 19, 2018Observed: 18.78 ft at 4:00PM May 19, 2018Observed: 18.79 ft at 4:15PM May 19, 2018Observed: 18.8 ft at 4:30PM May 19, 2018Observed: 18.79 ft at 4:45PM May 19, 2018Observed: 18.79 ft at 5:00PM May 19, 2018Observed: 18.8 ft at 5:15PM May 19, 2018Observed: 18.78 ft at 5:30PM May 19, 2018Observed: 18.78 ft at 5:45PM May 19, 2018Observed: 18.78 ft at 5:46PM May 19, 2018Observed: 18.78 ft at 6:00PM May 19, 2018Observed: 18.78 ft at 6:01PM May 19, 2018Observed: 18.77 ft at 6:15PM May 19, 2018Observed: 18.77 ft at 6:16PM May 19, 2018Observed: 18.77 ft at 6:30PM May 19, 2018Observed: 18.77 ft at 6:45PM May 19, 2018Observed: 18.75 ft at 7:00PM May 19, 2018Observed: 18.75 ft at 7:15PM May 19, 2018Observed: 18.75 ft at 7:30PM May 19, 2018Observed: 18.74 ft at 7:45PM May 19, 2018Observed: 18.73 ft at 8:00PM May 19, 2018Observed: 18.73 ft at 8:15PM May 19, 2018Observed: 18.73 ft at 8:30PM May 19, 2018Observed: 18.72 ft at 8:45PM May 19, 2018Observed: 18.7 ft at 9:00PM May 19, 2018Observed: 18.67 ft at 9:15PM May 19, 2018Observed: 18.7 ft at 9:30PM May 19, 2018Observed: 18.71 ft at 9:45PM May 19, 2018Observed: 18.69 ft at 10:00PM May 19, 2018Observed: 18.69 ft at 10:15PM May 19, 2018Observed: 18.69 ft at 10:30PM May 19, 2018Observed: 18.68 ft at 10:45PM May 19, 2018Observed: 18.67 ft at 11:00PM May 19, 2018Observed: 18.67 ft at 11:15PM May 19, 2018Observed: 18.67 ft at 11:30PM May 19, 2018Observed: 18.68 ft at 11:45PM May 19, 2018Observed: 18.69 ft at 12:00AM May 20, 2018Observed: 18.69 ft at 12:15AM May 20, 2018Observed: 18.68 ft at 12:30AM May 20, 2018Observed: 18.68 ft at 12:45AM May 20, 2018Observed: 18.68 ft at 1:00AM May 20, 2018Observed: 18.67 ft at 1:15AM May 20, 2018Observed: 18.68 ft at 1:30AM May 20, 2018Observed: 18.68 ft at 1:45AM May 20, 2018Observed: 18.68 ft at 1:46AM May 20, 2018Observed: 18.64 ft at 2:00AM May 20, 2018Observed: 18.64 ft at 2:01AM May 20, 2018Observed: 18.66 ft at 2:15AM May 20, 2018Observed: 18.66 ft at 2:16AM May 20, 2018Observed: 18.66 ft at 2:30AM May 20, 2018Observed: 18.65 ft at 2:45AM May 20, 2018Observed: 18.66 ft at 3:00AM May 20, 2018Observed: 18.65 ft at 3:15AM May 20, 2018Observed: 18.66 ft at 3:30AM May 20, 2018Observed: 18.66 ft at 3:45AM May 20, 2018Observed: 18.66 ft at 4:00AM May 20, 2018Observed: 18.66 ft at 4:15AM May 20, 2018Observed: 18.66 ft at 4:30AM May 20, 2018Observed: 18.65 ft at 4:45AM May 20, 2018Observed: 18.66 ft at 5:00AM May 20, 2018Observed: 18.65 ft at 5:15AM May 20, 2018Observed: 18.64 ft at 5:30AM May 20, 2018Observed: 18.63 ft at 5:45AM May 20, 2018Observed: 18.65 ft at 6:00AM May 20, 2018Observed: 18.64 ft at 6:15AM May 20, 2018Observed: 18.63 ft at 6:30AM May 20, 2018Observed: 18.63 ft at 6:45AM May 20, 2018Observed: 18.64 ft at 7:00AM May 20, 2018Observed: 18.62 ft at 7:15AM May 20, 2018Observed: 18.64 ft at 7:30AM May 20, 2018Observed: 18.63 ft at 7:45AM May 20, 2018Observed: 18.64 ft at 8:00AM May 20, 2018Observed: 18.62 ft at 8:15AM May 20, 2018Observed: 18.62 ft at 8:30AM May 20, 2018Observed: 18.62 ft at 8:45AM May 20, 2018Observed: 18.62 ft at 9:00AM May 20, 2018Observed: 18.61 ft at 9:15AM May 20, 2018Observed: 18.61 ft at 9:30AM May 20, 2018Observed: 18.61 ft at 9:46AM May 20, 2018Observed: 18.6 ft at 10:01AM May 20, 2018Observed: 18.6 ft at 10:16AM May 20, 2018USGS--Water Resources of the United StatesSXCI4(plotting HGIRG) Graph Created (10:48AM May 20, 2018)ObservedLatest observed value: 18.6 ft at 10:16 AM CDT 20-May-2018. Flood Stage is 32 ft
Printable Image
About this graph
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 Big Sioux River at Sioux City are issued as needed during times of high water, but are not routinely available.

Vertical datum height surveyed by the USGS

Return to Area Map
Upstream Gauge - near Jefferson Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 41
Moderate Flood Stage: 38
Flood Stage: 32
Action Stage: 29
Low Stage (in feet): -9999

Historic Crests
(1) 37.70 ft on 06/20/2014
(2) 19.04 ft on 05/04/2016
(3) 17.73 ft on 05/26/2017
(4) 15.09 ft on 07/10/2015

(P): Preliminary values subject to further review.

Recent Crests
(1) 17.73 ft on 05/26/2017
(2) 19.04 ft on 05/04/2016
(3) 15.09 ft on 07/10/2015
(4) 37.70 ft on 06/20/2014

(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:14
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
43.5 The lower levees in the Iowa Riverside community are in danger of being overtopped if not sandbagged.
41 Sandbagging is needed to protect Interstate 29 from flooding.
38 Most of the storm drains are submerged.
32 Agricultural land north of the leveed area begins to flood.
Photos
(1) Upstream View
(2) Downstream View
About This Location Collapse

Latitude: 42.524444° N, Longitude: 96.480000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 32 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 1060 ft 1092.0 ft Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 992.7 1091.7 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
Flood stage and impact levels have recently changed due to a change in the zero datum for this gauge. How low could the river get?
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Sioux Falls Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
(605) 330-4247
Ask Questions/Webmaster
Page last modified: 21-Dec-2016 10:37 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities