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Hydrograph River at a Glance Download
Big Sioux River at Sioux City Stage (ft)Flow (kcfs)Observed: 12.84 ft at 9:45AM May 15, 2015Observed: 12.83 ft at 10:00AM May 15, 2015Observed: 12.82 ft at 10:15AM May 15, 2015Observed: 12.82 ft at 10:30AM May 15, 2015Observed: 12.82 ft at 10:45AM May 15, 2015Observed: 12.81 ft at 11:00AM May 15, 2015Observed: 12.82 ft at 11:15AM May 15, 2015Observed: 12.81 ft at 11:30AM May 15, 2015Observed: 12.75 ft at 1:45PM May 15, 2015Observed: 12.73 ft at 2:00PM May 15, 2015Observed: 12.74 ft at 2:15PM May 15, 2015Observed: 12.72 ft at 2:30PM May 15, 2015Observed: 12.71 ft at 2:45PM May 15, 2015Observed: 12.71 ft at 3:00PM May 15, 2015Observed: 12.7 ft at 3:15PM May 15, 2015Observed: 12.7 ft at 3:30PM May 15, 2015Observed: 12.69 ft at 3:45PM May 15, 2015Observed: 12.68 ft at 4:00PM May 15, 2015Observed: 12.68 ft at 4:15PM May 15, 2015Observed: 12.68 ft at 4:16PM May 15, 2015Observed: 12.67 ft at 4:30PM May 15, 2015Observed: 12.67 ft at 4:31PM May 15, 2015Observed: 12.66 ft at 4:45PM May 15, 2015Observed: 12.66 ft at 4:46PM May 15, 2015Observed: 12.66 ft at 5:00PM May 15, 2015Observed: 12.65 ft at 5:15PM May 15, 2015Observed: 12.65 ft at 5:30PM May 15, 2015Observed: 12.6 ft at 6:45PM May 15, 2015Observed: 12.59 ft at 7:00PM May 15, 2015Observed: 12.59 ft at 7:15PM May 15, 2015Observed: 12.58 ft at 7:30PM May 15, 2015Observed: 12.54 ft at 8:45PM May 15, 2015Observed: 12.53 ft at 9:00PM May 15, 2015Observed: 12.51 ft at 9:15PM May 15, 2015Observed: 12.51 ft at 9:30PM May 15, 2015Observed: 12.5 ft at 9:45PM May 15, 2015Observed: 12.5 ft at 10:00PM May 15, 2015Observed: 12.49 ft at 10:15PM May 15, 2015Observed: 12.49 ft at 10:30PM May 15, 2015Observed: 12.49 ft at 10:45PM May 15, 2015Observed: 12.48 ft at 11:00PM May 15, 2015Observed: 12.47 ft at 11:15PM May 15, 2015Observed: 12.47 ft at 11:30PM May 15, 2015Observed: 12.47 ft at 11:45PM May 15, 2015Observed: 12.46 ft at 12:00AM May 16, 2015Observed: 12.46 ft at 12:15AM May 16, 2015Observed: 12.46 ft at 12:16AM May 16, 2015Observed: 12.46 ft at 12:30AM May 16, 2015Observed: 12.46 ft at 12:31AM May 16, 2015Observed: 12.45 ft at 12:45AM May 16, 2015Observed: 12.45 ft at 12:46AM May 16, 2015Observed: 12.44 ft at 1:00AM May 16, 2015Observed: 12.44 ft at 1:15AM May 16, 2015Observed: 12.44 ft at 1:30AM May 16, 2015Observed: 12.44 ft at 1:45AM May 16, 2015Observed: 12.43 ft at 2:00AM May 16, 2015Observed: 12.42 ft at 2:15AM May 16, 2015Observed: 12.42 ft at 2:30AM May 16, 2015Observed: 12.42 ft at 2:45AM May 16, 2015Observed: 12.42 ft at 3:00AM May 16, 2015Observed: 12.42 ft at 3:15AM May 16, 2015Observed: 12.42 ft at 3:30AM May 16, 2015Observed: 12.4 ft at 4:45AM May 16, 2015Observed: 12.39 ft at 5:00AM May 16, 2015Observed: 12.39 ft at 5:15AM May 16, 2015Observed: 12.4 ft at 5:30AM May 16, 2015Observed: 12.39 ft at 5:45AM May 16, 2015Observed: 12.38 ft at 6:00AM May 16, 2015Observed: 12.38 ft at 6:15AM May 16, 2015Observed: 12.39 ft at 6:30AM May 16, 2015Observed: 12.39 ft at 6:45AM May 16, 2015Observed: 12.4 ft at 7:00AM May 16, 2015Observed: 12.39 ft at 7:15AM May 16, 2015Observed: 12.38 ft at 7:30AM May 16, 2015Observed: 12.37 ft at 7:45AM May 16, 2015Observed: 12.4 ft at 8:00AM May 16, 2015Observed: 12.39 ft at 8:15AM May 16, 2015Observed: 12.39 ft at 8:17AM May 16, 2015Observed: 12.4 ft at 8:30AM May 16, 2015Observed: 12.4 ft at 8:32AM May 16, 2015Observed: 12.41 ft at 8:45AM May 16, 2015Observed: 12.41 ft at 8:47AM May 16, 2015Observed: 12.4 ft at 9:00AM May 16, 2015Observed: 12.41 ft at 9:15AM May 16, 2015Observed: 12.41 ft at 9:30AM May 16, 2015Observed: 12.42 ft at 10:45AM May 16, 2015Observed: 12.4 ft at 11:00AM May 16, 2015Observed: 12.4 ft at 11:15AM May 16, 2015Observed: 12.42 ft at 11:30AM May 16, 2015Observed: 12.42 ft at 12:45PM May 16, 2015Observed: 12.42 ft at 1:00PM May 16, 2015Observed: 12.4 ft at 1:15PM May 16, 2015Observed: 12.41 ft at 1:30PM May 16, 2015Observed: 12.42 ft at 1:45PM May 16, 2015Observed: 12.42 ft at 2:00PM May 16, 2015Observed: 12.42 ft at 2:15PM May 16, 2015Observed: 12.41 ft at 2:30PM May 16, 2015Observed: 12.43 ft at 2:45PM May 16, 2015Observed: 12.43 ft at 3:00PM May 16, 2015Observed: 12.42 ft at 3:15PM May 16, 2015Observed: 12.43 ft at 3:30PM May 16, 2015Observed: 12.42 ft at 3:45PM May 16, 2015Observed: 12.42 ft at 4:00PM May 16, 2015Observed: 12.42 ft at 4:15PM May 16, 2015Observed: 12.42 ft at 4:17PM May 16, 2015Observed: 12.41 ft at 4:30PM May 16, 2015Observed: 12.41 ft at 4:32PM May 16, 2015Observed: 12.41 ft at 4:45PM May 16, 2015Observed: 12.41 ft at 4:47PM May 16, 2015Observed: 12.43 ft at 5:00PM May 16, 2015Observed: 12.43 ft at 5:15PM May 16, 2015Observed: 12.43 ft at 5:30PM May 16, 2015Observed: 12.41 ft at 5:45PM May 16, 2015Observed: 12.41 ft at 6:00PM May 16, 2015Observed: 12.4 ft at 6:15PM May 16, 2015Observed: 12.41 ft at 6:30PM May 16, 2015Observed: 12.41 ft at 6:45PM May 16, 2015Observed: 12.42 ft at 7:00PM May 16, 2015Observed: 12.41 ft at 7:15PM May 16, 2015Observed: 12.39 ft at 7:30PM May 16, 2015Observed: 12.37 ft at 7:45PM May 16, 2015Observed: 12.41 ft at 8:00PM May 16, 2015Observed: 12.4 ft at 8:15PM May 16, 2015Observed: 12.38 ft at 8:30PM May 16, 2015Observed: 12.38 ft at 9:45PM May 16, 2015Observed: 12.37 ft at 10:00PM May 16, 2015Observed: 12.38 ft at 10:15PM May 16, 2015Observed: 12.37 ft at 10:30PM May 16, 2015Observed: 12.4 ft at 10:45PM May 16, 2015Observed: 12.4 ft at 11:00PM May 16, 2015Observed: 12.39 ft at 11:15PM May 16, 2015Observed: 12.39 ft at 11:30PM May 16, 2015Observed: 12.38 ft at 12:16AM May 17, 2015Observed: 12.41 ft at 12:31AM May 17, 2015Observed: 12.41 ft at 12:45AM May 17, 2015Observed: 12.39 ft at 1:00AM May 17, 2015Observed: 12.39 ft at 1:15AM May 17, 2015Observed: 12.38 ft at 1:30AM May 17, 2015Observed: 12.38 ft at 1:45AM May 17, 2015Observed: 12.38 ft at 2:00AM May 17, 2015Observed: 12.38 ft at 2:15AM May 17, 2015Observed: 12.39 ft at 2:30AM May 17, 2015Observed: 12.37 ft at 2:45AM May 17, 2015Observed: 12.38 ft at 3:00AM May 17, 2015Observed: 12.37 ft at 3:15AM May 17, 2015Observed: 12.37 ft at 3:30AM May 17, 2015Observed: 12.37 ft at 3:45AM May 17, 2015Observed: 12.38 ft at 4:00AM May 17, 2015Observed: 12.38 ft at 4:15AM May 17, 2015Observed: 12.39 ft at 4:30AM May 17, 2015Observed: 12.36 ft at 6:45AM May 17, 2015Observed: 12.37 ft at 7:00AM May 17, 2015Observed: 12.38 ft at 7:15AM May 17, 2015Observed: 12.38 ft at 7:30AM May 17, 2015Observed: 12.38 ft at 8:45AM May 17, 2015Observed: 12.39 ft at 9:00AM May 17, 2015Observed: 12.39 ft at 9:15AM May 17, 2015Observed: 12.39 ft at 9:30AM May 17, 2015Observed: 12.39 ft at 9:45AM May 17, 2015Observed: 12.39 ft at 10:00AM May 17, 2015Observed: 12.39 ft at 10:15AM May 17, 2015Observed: 12.41 ft at 10:30AM May 17, 2015Observed: 12.42 ft at 10:45AM May 17, 2015Observed: 12.4 ft at 11:00AM May 17, 2015Observed: 12.41 ft at 11:15AM May 17, 2015Observed: 12.4 ft at 11:30AM May 17, 2015Observed: 12.41 ft at 12:45PM May 17, 2015Observed: 12.41 ft at 1:00PM May 17, 2015Observed: 12.41 ft at 1:15PM May 17, 2015Observed: 12.43 ft at 1:30PM May 17, 2015Observed: 12.42 ft at 1:45PM May 17, 2015Observed: 12.4 ft at 2:00PM May 17, 2015Observed: 12.42 ft at 2:15PM May 17, 2015Observed: 12.43 ft at 2:30PM May 17, 2015Observed: 12.43 ft at 2:45PM May 17, 2015Observed: 12.41 ft at 3:00PM May 17, 2015Observed: 12.39 ft at 3:15PM May 17, 2015Observed: 12.41 ft at 3:30PM May 17, 2015Observed: 12.38 ft at 3:45PM May 17, 2015Observed: 12.38 ft at 4:00PM May 17, 2015Observed: 12.4 ft at 4:15PM May 17, 2015Observed: 12.38 ft at 4:30PM May 17, 2015Observed: 12.38 ft at 4:31PM May 17, 2015Observed: 12.39 ft at 4:45PM May 17, 2015Observed: 12.39 ft at 4:46PM May 17, 2015Observed: 12.38 ft at 5:00PM May 17, 2015Observed: 12.38 ft at 5:01PM May 17, 2015Observed: 12.35 ft at 5:15PM May 17, 2015Observed: 12.36 ft at 5:30PM May 17, 2015Observed: 12.37 ft at 5:45PM May 17, 2015Observed: 12.36 ft at 6:00PM May 17, 2015Observed: 12.38 ft at 6:15PM May 17, 2015Observed: 12.36 ft at 6:30PM May 17, 2015Observed: 12.37 ft at 6:45PM May 17, 2015Observed: 12.36 ft at 7:00PM May 17, 2015Observed: 12.37 ft at 7:15PM May 17, 2015Observed: 12.37 ft at 7:30PM May 17, 2015Observed: 12.35 ft at 7:45PM May 17, 2015Observed: 12.38 ft at 8:00PM May 17, 2015Observed: 12.36 ft at 8:15PM May 17, 2015Observed: 12.34 ft at 8:30PM May 17, 2015Observed: 12.36 ft at 8:45PM May 17, 2015Observed: 12.35 ft at 9:00PM May 17, 2015Observed: 12.35 ft at 9:15PM May 17, 2015Observed: 12.36 ft at 9:30PM May 17, 2015Observed: 12.37 ft at 9:45PM May 17, 2015Observed: 12.36 ft at 10:00PM May 17, 2015Observed: 12.36 ft at 10:15PM May 17, 2015Observed: 12.33 ft at 10:30PM May 17, 2015Observed: 12.36 ft at 10:45PM May 17, 2015Observed: 12.35 ft at 11:00PM May 17, 2015Observed: 12.33 ft at 11:15PM May 17, 2015Observed: 12.36 ft at 11:30PM May 17, 2015Observed: 12.36 ft at 11:45PM May 17, 2015Observed: 12.36 ft at 12:00AM May 18, 2015Observed: 12.36 ft at 12:15AM May 18, 2015Observed: 12.38 ft at 12:30AM May 18, 2015Observed: 12.34 ft at 12:45AM May 18, 2015Observed: 12.37 ft at 1:00AM May 18, 2015Observed: 12.34 ft at 1:15AM May 18, 2015Observed: 12.36 ft at 1:30AM May 18, 2015Observed: 12.34 ft at 2:45AM May 18, 2015Observed: 12.35 ft at 3:00AM May 18, 2015Observed: 12.37 ft at 3:15AM May 18, 2015Observed: 12.37 ft at 3:30AM May 18, 2015Observed: 12.37 ft at 3:45AM May 18, 2015Observed: 12.36 ft at 4:00AM May 18, 2015Observed: 12.38 ft at 4:15AM May 18, 2015Observed: 12.36 ft at 4:30AM May 18, 2015Observed: 12.36 ft at 4:45AM May 18, 2015Observed: 12.37 ft at 5:00AM May 18, 2015Observed: 12.34 ft at 5:15AM May 18, 2015Observed: 12.35 ft at 5:30AM May 18, 2015Observed: 12.35 ft at 5:45AM May 18, 2015Observed: 12.36 ft at 6:00AM May 18, 2015Observed: 12.36 ft at 6:15AM May 18, 2015Observed: 12.37 ft at 6:30AM May 18, 2015Observed: 12.36 ft at 6:45AM May 18, 2015Observed: 12.36 ft at 7:00AM May 18, 2015Observed: 12.34 ft at 7:15AM May 18, 2015Observed: 12.36 ft at 7:30AM May 18, 2015Observed: 12.35 ft at 7:45AM May 18, 2015Observed: 12.35 ft at 8:00AM May 18, 2015Observed: 12.36 ft at 8:15AM May 18, 2015Observed: 12.38 ft at 8:30AM May 18, 2015Observed: 12.38 ft at 8:32AM May 18, 2015Observed: 12.35 ft at 8:47AM May 18, 2015Observed: 12.38 ft at 9:02AM May 18, 2015Observed: 12.34 ft at 9:45AM May 18, 2015Observed: 12.38 ft at 10:00AM May 18, 2015Observed: 12.39 ft at 10:15AM May 18, 2015Observed: 12.37 ft at 10:30AM May 18, 2015Observed: 12.35 ft at 10:45AM May 18, 2015Observed: 12.37 ft at 11:00AM May 18, 2015Observed: 12.36 ft at 11:15AM May 18, 2015Observed: 12.36 ft at 11:30AM May 18, 2015Observed: 12.37 ft at 11:45AM May 18, 2015Observed: 12.36 ft at 12:00PM May 18, 2015Observed: 12.36 ft at 12:15PM May 18, 2015Observed: 12.36 ft at 12:30PM May 18, 2015Observed: 12.37 ft at 1:45PM May 18, 2015Observed: 12.36 ft at 2:00PM May 18, 2015Observed: 12.37 ft at 2:15PM May 18, 2015Observed: 12.38 ft at 2:30PM May 18, 2015Observed: 12.4 ft at 4:45PM May 18, 2015Observed: 12.42 ft at 5:00PM May 18, 2015Observed: 12.39 ft at 5:15PM May 18, 2015Observed: 12.4 ft at 5:30PM May 18, 2015Observed: 12.42 ft at 6:45PM May 18, 2015Observed: 12.44 ft at 7:00PM May 18, 2015Observed: 12.44 ft at 7:15PM May 18, 2015Observed: 12.46 ft at 7:30PM May 18, 2015Observed: 12.48 ft at 8:45PM May 18, 2015Observed: 12.49 ft at 9:00PM May 18, 2015Observed: 12.51 ft at 9:15PM May 18, 2015Observed: 12.51 ft at 9:30PM May 18, 2015Observed: 12.54 ft at 10:45PM May 18, 2015Observed: 12.55 ft at 11:00PM May 18, 2015Observed: 12.56 ft at 11:15PM May 18, 2015Observed: 12.56 ft at 11:30PM May 18, 2015Observed: 12.59 ft at 11:45PM May 18, 2015Observed: 12.6 ft at 12:00AM May 19, 2015Observed: 12.59 ft at 12:15AM May 19, 2015Observed: 12.59 ft at 12:30AM May 19, 2015Observed: 12.59 ft at 12:32AM May 19, 2015Observed: 12.61 ft at 12:47AM May 19, 2015Observed: 12.62 ft at 1:02AM May 19, 2015Observed: 12.66 ft at 1:45AM May 19, 2015Observed: 12.66 ft at 2:00AM May 19, 2015Observed: 12.69 ft at 2:15AM May 19, 2015Observed: 12.7 ft at 2:30AM May 19, 2015Observed: 12.7 ft at 2:45AM May 19, 2015Observed: 12.71 ft at 3:00AM May 19, 2015Observed: 12.72 ft at 3:15AM May 19, 2015Observed: 12.74 ft at 3:30AM May 19, 2015Observed: 12.82 ft at 4:45AM May 19, 2015Observed: 12.82 ft at 5:00AM May 19, 2015Observed: 12.83 ft at 5:15AM May 19, 2015Observed: 12.83 ft at 5:30AM May 19, 2015Observed: 12.86 ft at 5:45AM May 19, 2015Observed: 12.9 ft at 6:00AM May 19, 2015Observed: 12.89 ft at 6:15AM May 19, 2015Observed: 12.91 ft at 6:30AM May 19, 2015Observed: 12.93 ft at 6:45AM May 19, 2015Observed: 12.93 ft at 7:00AM May 19, 2015Observed: 12.95 ft at 7:15AM May 19, 2015Observed: 12.95 ft at 7:30AM May 19, 2015Observed: 12.96 ft at 7:45AM May 19, 2015Observed: 12.99 ft at 8:00AM May 19, 2015Observed: 13.01 ft at 8:15AM May 19, 2015Observed: 13.03 ft at 8:30AM May 19, 2015Observed: 13.03 ft at 8:32AM May 19, 2015Observed: 13.04 ft at 8:45AM May 19, 2015Observed: 13.04 ft at 8:47AM May 19, 2015Observed: 13.05 ft at 9:00AM May 19, 2015Observed: 13.05 ft at 9:02AM May 19, 2015Observed: 13.06 ft at 9:15AM May 19, 2015Observed: 13.08 ft at 9:30AM May 19, 2015Observed: 13.09 ft at 9:45AM May 19, 2015Observed: 13.11 ft at 10:00AM May 19, 2015Observed: 13.12 ft at 10:15AM May 19, 2015Observed: 13.13 ft at 10:30AM May 19, 2015Observed: 13.2 ft at 11:45AM May 19, 2015Observed: 13.23 ft at 12:00PM May 19, 2015Observed: 13.23 ft at 12:15PM May 19, 2015Observed: 13.23 ft at 12:30PM May 19, 2015Observed: 13.25 ft at 12:45PM May 19, 2015Observed: 13.27 ft at 1:00PM May 19, 2015Observed: 13.29 ft at 1:15PM May 19, 2015Observed: 13.3 ft at 1:30PM May 19, 2015Observed: 13.32 ft at 1:45PM May 19, 2015Observed: 13.31 ft at 2:00PM May 19, 2015Observed: 13.32 ft at 2:15PM May 19, 2015Observed: 13.34 ft at 2:30PM May 19, 2015Observed: 13.35 ft at 2:45PM May 19, 2015Observed: 13.37 ft at 3:00PM May 19, 2015Observed: 13.37 ft at 3:15PM May 19, 2015Observed: 13.36 ft at 3:30PM May 19, 2015Observed: 13.47 ft at 5:45PM May 19, 2015Observed: 13.48 ft at 6:00PM May 19, 2015Observed: 13.51 ft at 6:15PM May 19, 2015Observed: 13.51 ft at 6:30PM May 19, 2015Observed: 13.52 ft at 6:45PM May 19, 2015Observed: 13.51 ft at 7:00PM May 19, 2015Observed: 13.53 ft at 7:15PM May 19, 2015Observed: 13.54 ft at 7:30PM May 19, 2015Observed: 13.56 ft at 7:45PM May 19, 2015Observed: 13.55 ft at 8:00PM May 19, 2015Observed: 13.56 ft at 8:15PM May 19, 2015Observed: 13.59 ft at 8:30PM May 19, 2015Observed: 13.59 ft at 8:45PM May 19, 2015Observed: 13.59 ft at 9:00PM May 19, 2015Observed: 13.62 ft at 9:15PM May 19, 2015Observed: 13.63 ft at 9:30PM May 19, 2015Observed: 13.63 ft at 9:45PM May 19, 2015Observed: 13.62 ft at 10:00PM May 19, 2015Observed: 13.63 ft at 10:15PM May 19, 2015Observed: 13.63 ft at 10:30PM May 19, 2015Observed: 13.67 ft at 11:45PM May 19, 2015Observed: 13.69 ft at 12:00AM May 20, 2015Observed: 13.7 ft at 12:15AM May 20, 2015Observed: 13.71 ft at 12:30AM May 20, 2015Observed: 13.72 ft at 12:45AM May 20, 2015Observed: 13.73 ft at 1:00AM May 20, 2015Observed: 13.73 ft at 1:15AM May 20, 2015Observed: 13.73 ft at 1:30AM May 20, 2015Observed: 13.72 ft at 1:45AM May 20, 2015Observed: 13.74 ft at 2:00AM May 20, 2015Observed: 13.75 ft at 2:15AM May 20, 2015Observed: 13.75 ft at 2:30AM May 20, 2015Observed: 13.75 ft at 2:45AM May 20, 2015Observed: 13.76 ft at 3:00AM May 20, 2015Observed: 13.76 ft at 3:15AM May 20, 2015Observed: 13.79 ft at 3:30AM May 20, 2015Observed: 13.76 ft at 3:45AM May 20, 2015Observed: 13.79 ft at 4:00AM May 20, 2015Observed: 13.79 ft at 4:15AM May 20, 2015Observed: 13.8 ft at 4:30AM May 20, 2015Observed: 13.79 ft at 4:45AM May 20, 2015Observed: 13.79 ft at 5:00AM May 20, 2015Observed: 13.8 ft at 5:15AM May 20, 2015Observed: 13.8 ft at 5:30AM May 20, 2015Observed: 13.82 ft at 5:45AM May 20, 2015Observed: 13.8 ft at 6:00AM May 20, 2015Observed: 13.78 ft at 6:15AM May 20, 2015Observed: 13.82 ft at 6:30AM May 20, 2015Observed: 13.8 ft at 6:45AM May 20, 2015Observed: 13.82 ft at 7:00AM May 20, 2015Observed: 13.84 ft at 7:15AM May 20, 2015Observed: 13.83 ft at 7:30AM May 20, 2015Observed: 13.82 ft at 7:45AM May 20, 2015Observed: 13.84 ft at 8:00AM May 20, 2015Observed: 13.84 ft at 8:15AM May 20, 2015Highest Observation: 13.85 ft at 8:30AM May 20, 2015Observed: 13.83 ft at 8:45AM May 20, 2015Observed: 13.83 ft at 8:46AM May 20, 2015Observed: 13.83 ft at 9:00AM May 20, 2015Observed: 13.83 ft at 9:01AM May 20, 2015Observed: 13.84 ft at 9:15AM May 20, 2015Observed: 13.84 ft at 9:16AM May 20, 2015Observed: 13.83 ft at 9:30AM May 20, 2015Observed: 13.84 ft at 9:45AM May 20, 2015Highest Observation: 13.85 ft at 10:00AM May 20, 2015Highest Observation: 13.85 ft at 10:15AM May 20, 2015Highest Observation: 13.85 ft at 10:30AM May 20, 2015Observed: 13.81 ft at 1:45PM May 20, 2015Observed: 13.82 ft at 2:00PM May 20, 2015Observed: 13.82 ft at 2:15PM May 20, 2015Observed: 13.82 ft at 2:30PM May 20, 2015Observed: 13.82 ft at 3:45PM May 20, 2015Observed: 13.81 ft at 4:00PM May 20, 2015Observed: 13.8 ft at 4:15PM May 20, 2015Observed: 13.8 ft at 4:30PM May 20, 2015Observed: 13.79 ft at 4:45PM May 20, 2015Observed: 13.79 ft at 4:46PM May 20, 2015Observed: 13.79 ft at 5:00PM May 20, 2015Observed: 13.79 ft at 5:01PM May 20, 2015Observed: 13.76 ft at 5:15PM May 20, 2015Observed: 13.76 ft at 5:16PM May 20, 2015Observed: 13.78 ft at 5:30PM May 20, 2015Observed: 13.78 ft at 5:45PM May 20, 2015Observed: 13.75 ft at 6:00PM May 20, 2015Observed: 13.78 ft at 6:15PM May 20, 2015Observed: 13.76 ft at 6:30PM May 20, 2015Observed: 13.76 ft at 6:45PM May 20, 2015Observed: 13.76 ft at 7:00PM May 20, 2015Observed: 13.75 ft at 7:15PM May 20, 2015Observed: 13.77 ft at 7:30PM May 20, 2015Observed: 13.75 ft at 7:45PM May 20, 2015Observed: 13.72 ft at 8:00PM May 20, 2015Observed: 13.73 ft at 8:15PM May 20, 2015Observed: 13.73 ft at 8:30PM May 20, 2015Observed: 13.72 ft at 8:45PM May 20, 2015Observed: 13.71 ft at 9:00PM May 20, 2015Observed: 13.7 ft at 9:15PM May 20, 2015Observed: 13.69 ft at 9:30PM May 20, 2015Observed: 13.64 ft at 10:45PM May 20, 2015Observed: 13.66 ft at 11:00PM May 20, 2015Observed: 13.66 ft at 11:15PM May 20, 2015Observed: 13.65 ft at 11:30PM May 20, 2015Observed: 13.62 ft at 11:45PM May 20, 2015Observed: 13.63 ft at 12:00AM May 21, 2015Observed: 13.62 ft at 12:15AM May 21, 2015Observed: 13.62 ft at 12:30AM May 21, 2015Observed: 13.62 ft at 12:46AM May 21, 2015Observed: 13.62 ft at 1:01AM May 21, 2015Observed: 13.62 ft at 1:16AM May 21, 2015Observed: 13.55 ft at 3:45AM May 21, 2015Observed: 13.54 ft at 4:00AM May 21, 2015Observed: 13.52 ft at 4:15AM May 21, 2015Observed: 13.52 ft at 4:30AM May 21, 2015Observed: 13.53 ft at 4:45AM May 21, 2015Observed: 13.51 ft at 5:00AM May 21, 2015Observed: 13.5 ft at 5:15AM May 21, 2015Observed: 13.5 ft at 5:30AM May 21, 2015Observed: 13.51 ft at 5:45AM May 21, 2015Observed: 13.5 ft at 6:00AM May 21, 2015Observed: 13.49 ft at 6:15AM May 21, 2015Observed: 13.47 ft at 6:30AM May 21, 2015Observed: 13.48 ft at 6:45AM May 21, 2015Observed: 13.47 ft at 7:00AM May 21, 2015Observed: 13.46 ft at 7:15AM May 21, 2015Observed: 13.47 ft at 7:30AM May 21, 2015Observed: 13.45 ft at 7:45AM May 21, 2015Observed: 13.46 ft at 8:00AM May 21, 2015Observed: 13.46 ft at 8:15AM May 21, 2015Observed: 13.45 ft at 8:30AM May 21, 2015Observed: 13.45 ft at 8:45AM May 21, 2015Observed: 13.45 ft at 8:46AM May 21, 2015Observed: 13.43 ft at 9:00AM May 21, 2015Observed: 13.43 ft at 9:01AM May 21, 2015Observed: 13.42 ft at 9:15AM May 21, 2015Observed: 13.42 ft at 9:16AM May 21, 2015Observed: 13.42 ft at 9:30AM May 21, 2015Observed: 13.43 ft at 9:45AM May 21, 2015Observed: 13.43 ft at 10:00AM May 21, 2015Observed: 13.43 ft at 10:15AM May 21, 2015Observed: 13.41 ft at 10:30AM May 21, 2015Observed: 13.41 ft at 10:45AM May 21, 2015Observed: 13.42 ft at 11:00AM May 21, 2015Observed: 13.39 ft at 11:15AM May 21, 2015Observed: 13.39 ft at 11:30AM May 21, 2015Observed: 13.39 ft at 11:45AM May 21, 2015Observed: 13.39 ft at 12:00PM May 21, 2015Observed: 13.39 ft at 12:15PM May 21, 2015Observed: 13.39 ft at 12:30PM May 21, 2015Observed: 13.37 ft at 12:45PM May 21, 2015Observed: 13.38 ft at 1:00PM May 21, 2015Observed: 13.36 ft at 1:15PM May 21, 2015Observed: 13.36 ft at 1:30PM May 21, 2015Observed: 13.37 ft at 1:45PM May 21, 2015Observed: 13.36 ft at 2:00PM May 21, 2015Observed: 13.34 ft at 2:15PM May 21, 2015Observed: 13.35 ft at 2:30PM May 21, 2015Observed: 13.33 ft at 3:45PM May 21, 2015Observed: 13.33 ft at 4:00PM May 21, 2015Observed: 13.3 ft at 4:15PM May 21, 2015Observed: 13.3 ft at 4:30PM May 21, 2015Observed: 13.28 ft at 4:46PM May 21, 2015Observed: 13.31 ft at 5:01PM May 21, 2015Observed: 13.29 ft at 5:16PM May 21, 2015Observed: 13.28 ft at 5:45PM May 21, 2015Observed: 13.28 ft at 6:00PM May 21, 2015Observed: 13.28 ft at 6:15PM May 21, 2015Observed: 13.25 ft at 6:30PM May 21, 2015Observed: 13.27 ft at 6:45PM May 21, 2015Observed: 13.25 ft at 7:00PM May 21, 2015Observed: 13.25 ft at 7:15PM May 21, 2015Observed: 13.24 ft at 7:30PM May 21, 2015Observed: 13.23 ft at 7:45PM May 21, 2015Observed: 13.23 ft at 8:00PM May 21, 2015Observed: 13.22 ft at 8:15PM May 21, 2015Observed: 13.23 ft at 8:30PM May 21, 2015Observed: 13.22 ft at 8:45PM May 21, 2015Observed: 13.21 ft at 9:00PM May 21, 2015Observed: 13.21 ft at 9:15PM May 21, 2015Observed: 13.21 ft at 9:30PM May 21, 2015Observed: 13.19 ft at 9:45PM May 21, 2015Observed: 13.18 ft at 10:00PM May 21, 2015Observed: 13.19 ft at 10:15PM May 21, 2015Observed: 13.2 ft at 10:30PM May 21, 2015Observed: 13.19 ft at 10:45PM May 21, 2015Observed: 13.19 ft at 11:00PM May 21, 2015Observed: 13.17 ft at 11:15PM May 21, 2015Observed: 13.18 ft at 11:30PM May 21, 2015Observed: 13.14 ft at 12:47AM May 22, 2015Observed: 13.14 ft at 1:02AM May 22, 2015Observed: 13.13 ft at 1:17AM May 22, 2015Observed: 13.11 ft at 1:45AM May 22, 2015Observed: 13.12 ft at 2:00AM May 22, 2015Observed: 13.13 ft at 2:15AM May 22, 2015Observed: 13.11 ft at 2:30AM May 22, 2015Observed: 13.11 ft at 3:45AM May 22, 2015Observed: 13.09 ft at 4:00AM May 22, 2015Observed: 13.08 ft at 4:15AM May 22, 2015Observed: 13.07 ft at 4:30AM May 22, 2015Observed: 13.07 ft at 4:45AM May 22, 2015Observed: 13.06 ft at 5:00AM May 22, 2015Observed: 13.07 ft at 5:15AM May 22, 2015Observed: 13.05 ft at 5:30AM May 22, 2015Observed: 13.06 ft at 5:45AM May 22, 2015Observed: 13.04 ft at 6:00AM May 22, 2015Observed: 13.05 ft at 6:15AM May 22, 2015Observed: 13.05 ft at 6:30AM May 22, 2015Observed: 13.05 ft at 7:45AM May 22, 2015Observed: 13.04 ft at 8:00AM May 22, 2015Observed: 13.02 ft at 8:15AM May 22, 2015Observed: 13.03 ft at 8:30AM May 22, 2015USGS--Water Resources of the United StatesSXCI4(plotting HGIRG) Graph Created (9:33AM May 22, 2015)ObservedLatest observed value: 13.03 ft at 8:30 AM CDT 22-May-2015. Flood Stage is 32 ft
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Tabular Data (UTC)
Tabular Data (CDT)
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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: Automated gauge readings are now available, courtesy of the USGS.

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

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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): 0

Historic Crests
(1) 108.30 ft on 04/10/1969
(2) 106.80 ft on 04/03/1960
(3) 105.63 ft on 06/20/2014
(4) 104.80 ft on 04/01/1962
(5) 104.50 ft on 06/25/1984
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 105.63 ft on 06/20/2014
(2) 102.20 ft on 06/27/2011
(3) 97.70 ft on 09/30/2010
(4) 96.80 ft on 04/10/1997
(5) 102.00 ft on 04/14/1993
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:14
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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?
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Hydrologic Resources Additional Resources
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Sioux Falls Weather Forecast Office
26 Weather Lane
Sioux Falls, SD 57104-0198
(605) 330-4247
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Page last modified: 12-Feb-2015 9:35 PM
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