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

  
  The 2019 National Hydrologic Assessment - Spring Flood Outlook has been released (3/21/19) - Visit website, story map, or download file

Hydrograph River at a Glance Download
Split Rock Creek at Corson Stage (ft)Flow (cfs)Observed: 11.19 ft at 1:30AM Mar 18, 2019Observed: 11.14 ft at 1:45AM Mar 18, 2019Observed: 11.1 ft at 2:00AM Mar 18, 2019Observed: 11.05 ft at 2:15AM Mar 18, 2019Observed: 11.08 ft at 2:30AM Mar 18, 2019Observed: 10.94 ft at 2:45AM Mar 18, 2019Observed: 10.9 ft at 3:00AM Mar 18, 2019Observed: 10.91 ft at 3:15AM Mar 18, 2019Observed: 10.83 ft at 3:30AM Mar 18, 2019Observed: 10.83 ft at 3:45AM Mar 18, 2019Observed: 10.78 ft at 4:00AM Mar 18, 2019Observed: 10.71 ft at 4:15AM Mar 18, 2019Observed: 10.72 ft at 4:30AM Mar 18, 2019Observed: 10.67 ft at 4:45AM Mar 18, 2019Observed: 10.67 ft at 4:46AM Mar 18, 2019Observed: 10.66 ft at 5:00AM Mar 18, 2019Observed: 10.66 ft at 5:01AM Mar 18, 2019Observed: 10.64 ft at 5:15AM Mar 18, 2019Observed: 10.64 ft at 5:16AM Mar 18, 2019Observed: 10.59 ft at 5:30AM Mar 18, 2019Observed: 10.56 ft at 5:45AM Mar 18, 2019Observed: 10.49 ft at 6:00AM Mar 18, 2019Observed: 10.49 ft at 6:15AM Mar 18, 2019Observed: 10.45 ft at 6:30AM Mar 18, 2019Observed: 10.43 ft at 6:45AM Mar 18, 2019Observed: 10.36 ft at 7:00AM Mar 18, 2019Observed: 10.34 ft at 7:15AM Mar 18, 2019Observed: 10.3 ft at 7:30AM Mar 18, 2019Observed: 10.31 ft at 7:45AM Mar 18, 2019Observed: 10.28 ft at 8:00AM Mar 18, 2019Observed: 10.22 ft at 8:15AM Mar 18, 2019Observed: 10.15 ft at 8:30AM Mar 18, 2019Observed: 10.13 ft at 8:45AM Mar 18, 2019Observed: 10.07 ft at 9:00AM Mar 18, 2019Observed: 10.03 ft at 9:15AM Mar 18, 2019Observed: 9.93 ft at 9:30AM Mar 18, 2019Observed: 9.9 ft at 9:45AM Mar 18, 2019Observed: 9.9 ft at 10:00AM Mar 18, 2019Observed: 9.84 ft at 10:15AM Mar 18, 2019Observed: 9.77 ft at 10:30AM Mar 18, 2019Observed: 9.75 ft at 10:45AM Mar 18, 2019Observed: 9.69 ft at 11:00AM Mar 18, 2019Observed: 9.7 ft at 11:15AM Mar 18, 2019Observed: 9.66 ft at 11:30AM Mar 18, 2019Observed: 9.62 ft at 11:45AM Mar 18, 2019Observed: 9.58 ft at 12:00PM Mar 18, 2019Observed: 9.58 ft at 12:15PM Mar 18, 2019Observed: 9.56 ft at 12:30PM Mar 18, 2019Observed: 9.54 ft at 12:45PM Mar 18, 2019Observed: 9.54 ft at 12:46PM Mar 18, 2019Observed: 9.54 ft at 1:00PM Mar 18, 2019Observed: 9.54 ft at 1:01PM Mar 18, 2019Observed: 9.57 ft at 1:15PM Mar 18, 2019Observed: 9.57 ft at 1:16PM Mar 18, 2019Observed: 9.56 ft at 1:30PM Mar 18, 2019Observed: 9.51 ft at 1:45PM Mar 18, 2019Observed: 9.53 ft at 2:00PM Mar 18, 2019Observed: 9.55 ft at 2:15PM Mar 18, 2019Observed: 9.51 ft at 2:30PM Mar 18, 2019Observed: 9.53 ft at 2:45PM Mar 18, 2019Observed: 9.55 ft at 3:00PM Mar 18, 2019Observed: 9.58 ft at 3:15PM Mar 18, 2019Observed: 9.6 ft at 3:30PM Mar 18, 2019Observed: 9.65 ft at 3:45PM Mar 18, 2019Observed: 9.65 ft at 4:00PM Mar 18, 2019Observed: 9.71 ft at 4:15PM Mar 18, 2019Observed: 9.78 ft at 4:30PM Mar 18, 2019Observed: 9.81 ft at 4:45PM Mar 18, 2019Observed: 9.87 ft at 5:00PM Mar 18, 2019Observed: 9.96 ft at 5:15PM Mar 18, 2019Observed: 10 ft at 5:30PM Mar 18, 2019Observed: 10.06 ft at 5:45PM Mar 18, 2019Observed: 10.13 ft at 6:00PM Mar 18, 2019Observed: 10.15 ft at 6:15PM Mar 18, 2019Observed: 10.19 ft at 6:30PM Mar 18, 2019Observed: 10.27 ft at 6:45PM Mar 18, 2019Observed: 10.28 ft at 7:00PM Mar 18, 2019Observed: 10.38 ft at 7:15PM Mar 18, 2019Observed: 10.43 ft at 7:30PM Mar 18, 2019Observed: 10.43 ft at 7:45PM Mar 18, 2019Observed: 10.45 ft at 8:00PM Mar 18, 2019Observed: 10.5 ft at 8:15PM Mar 18, 2019Observed: 10.55 ft at 8:30PM Mar 18, 2019Observed: 10.57 ft at 8:45PM Mar 18, 2019Observed: 10.62 ft at 9:00PM Mar 18, 2019Observed: 10.64 ft at 9:15PM Mar 18, 2019Observed: 10.66 ft at 9:30PM Mar 18, 2019Observed: 10.69 ft at 9:45PM Mar 18, 2019Observed: 10.69 ft at 10:00PM Mar 18, 2019Observed: 10.7 ft at 10:15PM Mar 18, 2019Observed: 10.76 ft at 10:30PM Mar 18, 2019Observed: 10.78 ft at 10:45PM Mar 18, 2019Observed: 10.86 ft at 11:00PM Mar 18, 2019Observed: 10.82 ft at 11:15PM Mar 18, 2019Observed: 10.8 ft at 11:30PM Mar 18, 2019Observed: 10.77 ft at 11:45PM Mar 18, 2019Observed: 10.87 ft at 12:00AM Mar 19, 2019Observed: 10.79 ft at 12:15AM Mar 19, 2019Observed: 10.86 ft at 12:30AM Mar 19, 2019Observed: 10.89 ft at 12:45AM Mar 19, 2019Observed: 10.85 ft at 1:00AM Mar 19, 2019Observed: 10.82 ft at 1:15AM Mar 19, 2019Observed: 10.87 ft at 1:30AM Mar 19, 2019Observed: 10.87 ft at 1:45AM Mar 19, 2019Observed: 10.78 ft at 2:00AM Mar 19, 2019Observed: 10.79 ft at 2:15AM Mar 19, 2019Observed: 10.8 ft at 2:30AM Mar 19, 2019Observed: 10.81 ft at 2:45AM Mar 19, 2019Observed: 10.79 ft at 3:00AM Mar 19, 2019Observed: 10.75 ft at 3:15AM Mar 19, 2019Observed: 10.73 ft at 3:30AM Mar 19, 2019Observed: 10.74 ft at 3:45AM Mar 19, 2019Observed: 10.71 ft at 4:00AM Mar 19, 2019Observed: 10.73 ft at 4:15AM Mar 19, 2019Observed: 10.64 ft at 4:30AM Mar 19, 2019Observed: 10.66 ft at 4:45AM Mar 19, 2019Observed: 10.6 ft at 5:00AM Mar 19, 2019Observed: 10.64 ft at 5:15AM Mar 19, 2019Observed: 10.62 ft at 5:30AM Mar 19, 2019Observed: 10.6 ft at 5:45AM Mar 19, 2019Observed: 10.57 ft at 6:00AM Mar 19, 2019Observed: 10.51 ft at 6:15AM Mar 19, 2019Observed: 10.49 ft at 6:30AM Mar 19, 2019Observed: 10.49 ft at 6:45AM Mar 19, 2019Observed: 10.43 ft at 7:00AM Mar 19, 2019Observed: 10.39 ft at 7:15AM Mar 19, 2019Observed: 10.41 ft at 7:30AM Mar 19, 2019Observed: 10.32 ft at 7:45AM Mar 19, 2019Observed: 10.32 ft at 8:00AM Mar 19, 2019Observed: 10.26 ft at 8:15AM Mar 19, 2019Observed: 10.26 ft at 8:30AM Mar 19, 2019Observed: 10.19 ft at 8:45AM Mar 19, 2019Observed: 10.17 ft at 9:00AM Mar 19, 2019Observed: 10.05 ft at 9:15AM Mar 19, 2019Observed: 10.03 ft at 9:30AM Mar 19, 2019Observed: 9.99 ft at 9:45AM Mar 19, 2019Observed: 9.94 ft at 10:00AM Mar 19, 2019Observed: 9.9 ft at 10:15AM Mar 19, 2019Observed: 9.82 ft at 10:30AM Mar 19, 2019Observed: 9.77 ft at 10:45AM Mar 19, 2019Observed: 9.72 ft at 11:00AM Mar 19, 2019Observed: 9.69 ft at 11:15AM Mar 19, 2019Observed: 9.69 ft at 11:30AM Mar 19, 2019Observed: 9.64 ft at 11:45AM Mar 19, 2019Observed: 9.62 ft at 12:00PM Mar 19, 2019Observed: 9.56 ft at 12:15PM Mar 19, 2019Observed: 9.54 ft at 12:30PM Mar 19, 2019Observed: 9.51 ft at 12:45PM Mar 19, 2019Observed: 9.5 ft at 1:00PM Mar 19, 2019Observed: 9.5 ft at 1:15PM Mar 19, 2019Observed: 9.47 ft at 1:30PM Mar 19, 2019Observed: 9.45 ft at 1:45PM Mar 19, 2019Observed: 9.48 ft at 2:00PM Mar 19, 2019Observed: 9.45 ft at 2:15PM Mar 19, 2019Observed: 9.47 ft at 2:30PM Mar 19, 2019Observed: 9.46 ft at 2:45PM Mar 19, 2019Observed: 9.46 ft at 3:00PM Mar 19, 2019Observed: 9.49 ft at 3:15PM Mar 19, 2019Observed: 9.47 ft at 3:30PM Mar 19, 2019Observed: 9.52 ft at 3:45PM Mar 19, 2019Observed: 9.55 ft at 4:00PM Mar 19, 2019Observed: 9.58 ft at 4:15PM Mar 19, 2019Observed: 9.67 ft at 4:30PM Mar 19, 2019Observed: 10.08 ft at 5:30PM Mar 19, 2019Observed: 10.17 ft at 5:45PM Mar 19, 2019Observed: 10.18 ft at 6:00PM Mar 19, 2019Observed: 10.29 ft at 6:15PM Mar 19, 2019Observed: 10.31 ft at 6:30PM Mar 19, 2019Observed: 10.36 ft at 6:45PM Mar 19, 2019Observed: 10.37 ft at 7:00PM Mar 19, 2019Observed: 10.4 ft at 7:15PM Mar 19, 2019Observed: 10.46 ft at 7:30PM Mar 19, 2019Observed: 10.51 ft at 7:45PM Mar 19, 2019Observed: 10.54 ft at 8:00PM Mar 19, 2019Observed: 10.61 ft at 8:15PM Mar 19, 2019Observed: 10.66 ft at 8:30PM Mar 19, 2019Observed: 10.76 ft at 8:45PM Mar 19, 2019Observed: 10.8 ft at 9:00PM Mar 19, 2019Observed: 10.89 ft at 9:15PM Mar 19, 2019Observed: 11.01 ft at 9:30PM Mar 19, 2019Observed: 11.01 ft at 9:45PM Mar 19, 2019Observed: 11.12 ft at 10:00PM Mar 19, 2019Observed: 11.09 ft at 10:15PM Mar 19, 2019Observed: 11.17 ft at 10:30PM Mar 19, 2019Observed: 11.21 ft at 10:45PM Mar 19, 2019Observed: 11.2 ft at 11:00PM Mar 19, 2019Observed: 11.22 ft at 11:15PM Mar 19, 2019Observed: 11.26 ft at 11:30PM Mar 19, 2019Observed: 11.26 ft at 11:45PM Mar 19, 2019Observed: 11.4 ft at 12:00AM Mar 20, 2019Observed: 11.37 ft at 12:15AM Mar 20, 2019Observed: 11.47 ft at 12:30AM Mar 20, 2019Observed: 11.5 ft at 12:45AM Mar 20, 2019Observed: 11.5 ft at 12:46AM Mar 20, 2019Observed: 11.45 ft at 1:00AM Mar 20, 2019Observed: 11.45 ft at 1:01AM Mar 20, 2019Observed: 11.54 ft at 1:15AM Mar 20, 2019Observed: 11.54 ft at 1:16AM Mar 20, 2019Observed: 11.49 ft at 1:30AM Mar 20, 2019Observed: 11.5 ft at 1:45AM Mar 20, 2019Observed: 11.64 ft at 2:00AM Mar 20, 2019Observed: 11.59 ft at 2:15AM Mar 20, 2019Observed: 11.61 ft at 2:30AM Mar 20, 2019Observed: 11.61 ft at 2:45AM Mar 20, 2019Observed: 11.46 ft at 3:00AM Mar 20, 2019Observed: 11.57 ft at 3:15AM Mar 20, 2019Observed: 11.57 ft at 3:30AM Mar 20, 2019Observed: 11.52 ft at 3:45AM Mar 20, 2019Observed: 11.5 ft at 4:00AM Mar 20, 2019Observed: 11.59 ft at 4:15AM Mar 20, 2019Observed: 11.6 ft at 4:30AM Mar 20, 2019Observed: 11.57 ft at 4:45AM Mar 20, 2019Observed: 11.58 ft at 5:00AM Mar 20, 2019Observed: 11.56 ft at 5:15AM Mar 20, 2019Observed: 11.6 ft at 5:30AM Mar 20, 2019Highest Observation: 11.65 ft at 5:45AM Mar 20, 2019Observed: 11.64 ft at 6:00AM Mar 20, 2019Observed: 11.63 ft at 6:15AM Mar 20, 2019Observed: 11.58 ft at 6:30AM Mar 20, 2019Observed: 11.61 ft at 6:45AM Mar 20, 2019Observed: 11.62 ft at 7:00AM Mar 20, 2019Observed: 11.51 ft at 7:15AM Mar 20, 2019Observed: 11.51 ft at 7:30AM Mar 20, 2019Observed: 11.51 ft at 7:45AM Mar 20, 2019Observed: 11.5 ft at 8:00AM Mar 20, 2019Observed: 11.54 ft at 8:15AM Mar 20, 2019Observed: 11.44 ft at 8:30AM Mar 20, 2019Observed: 11.49 ft at 8:45AM Mar 20, 2019Observed: 11.49 ft at 8:46AM Mar 20, 2019Observed: 11.47 ft at 9:00AM Mar 20, 2019Observed: 11.47 ft at 9:01AM Mar 20, 2019Observed: 11.42 ft at 9:15AM Mar 20, 2019Observed: 11.42 ft at 9:16AM Mar 20, 2019Observed: 11.39 ft at 9:30AM Mar 20, 2019Observed: 11.4 ft at 9:45AM Mar 20, 2019Observed: 11.31 ft at 10:00AM Mar 20, 2019Observed: 11.33 ft at 10:15AM Mar 20, 2019Observed: 11.3 ft at 10:30AM Mar 20, 2019Observed: 11.3 ft at 10:45AM Mar 20, 2019Observed: 11.2 ft at 11:00AM Mar 20, 2019Observed: 11.21 ft at 11:15AM Mar 20, 2019Observed: 11.16 ft at 11:30AM Mar 20, 2019Observed: 11.12 ft at 11:45AM Mar 20, 2019Observed: 11.12 ft at 12:00PM Mar 20, 2019Observed: 11.09 ft at 12:15PM Mar 20, 2019Observed: 11.08 ft at 12:30PM Mar 20, 2019Observed: 11 ft at 12:45PM Mar 20, 2019Observed: 11.08 ft at 1:00PM Mar 20, 2019Observed: 11 ft at 1:15PM Mar 20, 2019Observed: 10.99 ft at 1:30PM Mar 20, 2019Observed: 10.97 ft at 1:45PM Mar 20, 2019Observed: 11.02 ft at 2:00PM Mar 20, 2019Observed: 10.92 ft at 2:15PM Mar 20, 2019Observed: 10.94 ft at 2:30PM Mar 20, 2019Observed: 10.85 ft at 2:45PM Mar 20, 2019Observed: 10.88 ft at 3:00PM Mar 20, 2019Observed: 10.81 ft at 3:15PM Mar 20, 2019Observed: 10.84 ft at 3:30PM Mar 20, 2019Observed: 10.81 ft at 3:45PM Mar 20, 2019Observed: 10.83 ft at 4:00PM Mar 20, 2019Observed: 10.77 ft at 4:15PM Mar 20, 2019Observed: 10.73 ft at 4:30PM Mar 20, 2019Observed: 10.81 ft at 4:45PM Mar 20, 2019Observed: 10.79 ft at 5:00PM Mar 20, 2019Observed: 10.79 ft at 5:01PM Mar 20, 2019Observed: 10.82 ft at 5:15PM Mar 20, 2019Observed: 10.82 ft at 5:16PM Mar 20, 2019Observed: 10.81 ft at 5:30PM Mar 20, 2019Observed: 10.81 ft at 5:31PM Mar 20, 2019Observed: 10.75 ft at 5:45PM Mar 20, 2019Observed: 10.81 ft at 6:00PM Mar 20, 2019Observed: 10.84 ft at 6:15PM Mar 20, 2019Observed: 10.87 ft at 6:30PM Mar 20, 2019Observed: 10.85 ft at 6:45PM Mar 20, 2019Observed: 10.84 ft at 7:00PM Mar 20, 2019Observed: 10.9 ft at 7:15PM Mar 20, 2019Observed: 10.94 ft at 7:30PM Mar 20, 2019Observed: 10.93 ft at 7:45PM Mar 20, 2019Observed: 10.98 ft at 8:00PM Mar 20, 2019Observed: 11 ft at 8:15PM Mar 20, 2019Observed: 11.04 ft at 8:30PM Mar 20, 2019Observed: 11.14 ft at 8:45PM Mar 20, 2019Observed: 11.08 ft at 9:00PM Mar 20, 2019Observed: 11.15 ft at 9:15PM Mar 20, 2019Observed: 11.18 ft at 9:30PM Mar 20, 2019Observed: 11.21 ft at 9:45PM Mar 20, 2019Observed: 11.26 ft at 10:00PM Mar 20, 2019Observed: 11.19 ft at 10:15PM Mar 20, 2019Observed: 11.31 ft at 10:30PM Mar 20, 2019Observed: 11.24 ft at 10:45PM Mar 20, 2019Observed: 11.27 ft at 11:00PM Mar 20, 2019Observed: 11.23 ft at 11:15PM Mar 20, 2019Observed: 11.25 ft at 11:30PM Mar 20, 2019Observed: 11.23 ft at 11:45PM Mar 20, 2019Observed: 11.22 ft at 12:00AM Mar 21, 2019Observed: 11.2 ft at 12:15AM Mar 21, 2019Observed: 11.22 ft at 12:30AM Mar 21, 2019Observed: 11.15 ft at 12:45AM Mar 21, 2019Observed: 11.18 ft at 1:00AM Mar 21, 2019Observed: 11.16 ft at 1:15AM Mar 21, 2019Observed: 11.17 ft at 1:30AM Mar 21, 2019Observed: 11.13 ft at 1:45AM Mar 21, 2019Observed: 11.12 ft at 2:00AM Mar 21, 2019Observed: 11.08 ft at 2:15AM Mar 21, 2019Observed: 11.07 ft at 2:30AM Mar 21, 2019Observed: 11.03 ft at 2:45AM Mar 21, 2019Observed: 11.04 ft at 3:00AM Mar 21, 2019Observed: 11.07 ft at 3:15AM Mar 21, 2019Observed: 11.02 ft at 3:30AM Mar 21, 2019Observed: 11.01 ft at 3:45AM Mar 21, 2019Observed: 10.96 ft at 4:00AM Mar 21, 2019Observed: 10.98 ft at 4:15AM Mar 21, 2019Observed: 10.95 ft at 4:30AM Mar 21, 2019Observed: 10.93 ft at 4:45AM Mar 21, 2019Observed: 10.91 ft at 5:00AM Mar 21, 2019Observed: 10.88 ft at 5:15AM Mar 21, 2019Observed: 10.96 ft at 5:30AM Mar 21, 2019Observed: 10.94 ft at 5:45AM Mar 21, 2019Observed: 10.88 ft at 6:00AM Mar 21, 2019Observed: 10.89 ft at 6:15AM Mar 21, 2019Observed: 10.89 ft at 6:30AM Mar 21, 2019Observed: 10.89 ft at 6:45AM Mar 21, 2019Observed: 10.94 ft at 7:00AM Mar 21, 2019Observed: 10.92 ft at 7:15AM Mar 21, 2019Observed: 10.88 ft at 7:30AM Mar 21, 2019Observed: 10.86 ft at 7:45AM Mar 21, 2019Observed: 10.88 ft at 8:00AM Mar 21, 2019Observed: 10.9 ft at 8:15AM Mar 21, 2019Observed: 10.87 ft at 8:30AM Mar 21, 2019Observed: 10.87 ft at 8:45AM Mar 21, 2019Observed: 10.9 ft at 9:00AM Mar 21, 2019Observed: 10.9 ft at 9:01AM Mar 21, 2019Observed: 10.89 ft at 9:15AM Mar 21, 2019Observed: 10.89 ft at 9:16AM Mar 21, 2019Observed: 10.87 ft at 9:30AM Mar 21, 2019Observed: 10.87 ft at 9:31AM Mar 21, 2019Observed: 10.88 ft at 9:45AM Mar 21, 2019Observed: 10.86 ft at 10:00AM Mar 21, 2019Observed: 10.9 ft at 10:15AM Mar 21, 2019Observed: 10.91 ft at 10:30AM Mar 21, 2019Observed: 10.86 ft at 10:45AM Mar 21, 2019Observed: 10.88 ft at 11:00AM Mar 21, 2019Observed: 10.87 ft at 11:15AM Mar 21, 2019Observed: 10.91 ft at 11:30AM Mar 21, 2019Observed: 10.88 ft at 11:45AM Mar 21, 2019Observed: 10.9 ft at 12:00PM Mar 21, 2019Observed: 10.88 ft at 12:15PM Mar 21, 2019Observed: 10.88 ft at 12:30PM Mar 21, 2019Observed: 10.88 ft at 12:45PM Mar 21, 2019Observed: 10.86 ft at 1:00PM Mar 21, 2019Observed: 10.92 ft at 1:15PM Mar 21, 2019Observed: 10.85 ft at 1:30PM Mar 21, 2019Observed: 10.88 ft at 1:45PM Mar 21, 2019Observed: 10.85 ft at 2:00PM Mar 21, 2019Observed: 10.84 ft at 2:15PM Mar 21, 2019Observed: 10.81 ft at 2:30PM Mar 21, 2019Observed: 10.82 ft at 2:45PM Mar 21, 2019Observed: 10.81 ft at 3:00PM Mar 21, 2019Observed: 10.78 ft at 3:15PM Mar 21, 2019Observed: 10.77 ft at 3:30PM Mar 21, 2019Observed: 10.74 ft at 3:45PM Mar 21, 2019Observed: 10.73 ft at 4:00PM Mar 21, 2019Observed: 10.74 ft at 4:15PM Mar 21, 2019Observed: 10.69 ft at 4:30PM Mar 21, 2019Observed: 10.7 ft at 4:45PM Mar 21, 2019Observed: 10.7 ft at 5:00PM Mar 21, 2019Observed: 10.7 ft at 5:15PM Mar 21, 2019Observed: 10.67 ft at 5:30PM Mar 21, 2019Observed: 10.61 ft at 5:45PM Mar 21, 2019Observed: 10.65 ft at 6:00PM Mar 21, 2019Observed: 10.61 ft at 6:15PM Mar 21, 2019Observed: 10.54 ft at 6:30PM Mar 21, 2019Observed: 10.59 ft at 6:45PM Mar 21, 2019Observed: 10.52 ft at 8:00PM Mar 21, 2019Observed: 10.5 ft at 8:15PM Mar 21, 2019Observed: 10.51 ft at 8:30PM Mar 21, 2019Observed: 10.52 ft at 8:45PM Mar 21, 2019Observed: 10.48 ft at 9:00PM Mar 21, 2019Observed: 10.43 ft at 9:15PM Mar 21, 2019Observed: 10.48 ft at 9:30PM Mar 21, 2019Observed: 10.46 ft at 9:45PM Mar 21, 2019Observed: 10.44 ft at 10:00PM Mar 21, 2019Observed: 10.43 ft at 10:15PM Mar 21, 2019Observed: 10.42 ft at 10:30PM Mar 21, 2019Observed: 10.42 ft at 10:45PM Mar 21, 2019Observed: 10.36 ft at 11:00PM Mar 21, 2019Observed: 10.34 ft at 11:15PM Mar 21, 2019Observed: 10.36 ft at 11:30PM Mar 21, 2019Observed: 10.35 ft at 11:45PM Mar 21, 2019Observed: 10.33 ft at 12:00AM Mar 22, 2019Observed: 10.29 ft at 12:15AM Mar 22, 2019Observed: 10.28 ft at 12:30AM Mar 22, 2019Observed: 10.28 ft at 12:45AM Mar 22, 2019Observed: 10.25 ft at 1:00AM Mar 22, 2019Observed: 10.26 ft at 1:15AM Mar 22, 2019Observed: 10.24 ft at 1:30AM Mar 22, 2019Observed: 10.22 ft at 1:45AM Mar 22, 2019Observed: 10.24 ft at 2:00AM Mar 22, 2019Observed: 10.18 ft at 2:15AM Mar 22, 2019Observed: 10.21 ft at 2:30AM Mar 22, 2019Observed: 10.21 ft at 2:45AM Mar 22, 2019Observed: 10.19 ft at 3:00AM Mar 22, 2019Observed: 10.17 ft at 3:15AM Mar 22, 2019Observed: 10.17 ft at 3:30AM Mar 22, 2019Observed: 10.17 ft at 3:45AM Mar 22, 2019Observed: 10.22 ft at 4:00AM Mar 22, 2019Observed: 10.2 ft at 4:15AM Mar 22, 2019Observed: 10.22 ft at 4:30AM Mar 22, 2019Observed: 10.2 ft at 4:45AM Mar 22, 2019Observed: 10.27 ft at 5:00AM Mar 22, 2019Observed: 10.24 ft at 5:15AM Mar 22, 2019Observed: 10.25 ft at 5:30AM Mar 22, 2019Observed: 10.29 ft at 5:45AM Mar 22, 2019Observed: 10.3 ft at 6:00AM Mar 22, 2019Observed: 10.34 ft at 6:15AM Mar 22, 2019Observed: 10.34 ft at 6:30AM Mar 22, 2019Observed: 10.36 ft at 6:45AM Mar 22, 2019Observed: 10.39 ft at 7:00AM Mar 22, 2019Observed: 10.38 ft at 7:15AM Mar 22, 2019Observed: 10.44 ft at 7:30AM Mar 22, 2019Observed: 10.46 ft at 7:45AM Mar 22, 2019Observed: 10.45 ft at 8:00AM Mar 22, 2019Observed: 10.49 ft at 8:15AM Mar 22, 2019Observed: 10.48 ft at 8:30AM Mar 22, 2019Observed: 10.52 ft at 8:45AM Mar 22, 2019Observed: 10.55 ft at 9:00AM Mar 22, 2019Observed: 10.55 ft at 9:01AM Mar 22, 2019Observed: 10.55 ft at 9:15AM Mar 22, 2019Observed: 10.55 ft at 9:16AM Mar 22, 2019Observed: 10.61 ft at 9:30AM Mar 22, 2019Observed: 10.61 ft at 9:31AM Mar 22, 2019Observed: 10.63 ft at 9:45AM Mar 22, 2019Observed: 10.6 ft at 10:00AM Mar 22, 2019Observed: 10.65 ft at 10:15AM Mar 22, 2019Observed: 10.63 ft at 10:30AM Mar 22, 2019Observed: 10.66 ft at 10:45AM Mar 22, 2019Observed: 10.65 ft at 11:00AM Mar 22, 2019Observed: 10.7 ft at 11:15AM Mar 22, 2019Observed: 10.71 ft at 11:30AM Mar 22, 2019Observed: 10.68 ft at 11:45AM Mar 22, 2019Observed: 10.68 ft at 12:00PM Mar 22, 2019Observed: 10.69 ft at 12:15PM Mar 22, 2019Observed: 10.72 ft at 12:30PM Mar 22, 2019Observed: 10.75 ft at 12:45PM Mar 22, 2019Observed: 10.71 ft at 1:00PM Mar 22, 2019Observed: 10.73 ft at 1:15PM Mar 22, 2019Observed: 10.76 ft at 1:30PM Mar 22, 2019Observed: 10.74 ft at 1:45PM Mar 22, 2019Observed: 10.73 ft at 2:00PM Mar 22, 2019Observed: 10.75 ft at 2:15PM Mar 22, 2019Observed: 10.77 ft at 2:30PM Mar 22, 2019Observed: 10.78 ft at 2:45PM Mar 22, 2019Observed: 10.77 ft at 3:00PM Mar 22, 2019Observed: 10.75 ft at 3:15PM Mar 22, 2019Observed: 10.75 ft at 3:30PM Mar 22, 2019Observed: 10.76 ft at 3:45PM Mar 22, 2019Observed: 10.83 ft at 4:00PM Mar 22, 2019Observed: 10.81 ft at 4:15PM Mar 22, 2019Observed: 10.82 ft at 4:30PM Mar 22, 2019Observed: 10.8 ft at 4:45PM Mar 22, 2019Observed: 10.85 ft at 5:00PM Mar 22, 2019Observed: 10.85 ft at 5:01PM Mar 22, 2019Observed: 10.81 ft at 5:15PM Mar 22, 2019Observed: 10.81 ft at 5:16PM Mar 22, 2019Observed: 10.82 ft at 5:30PM Mar 22, 2019Observed: 10.82 ft at 5:31PM Mar 22, 2019Observed: 10.83 ft at 5:45PM Mar 22, 2019Observed: 10.82 ft at 6:00PM Mar 22, 2019Observed: 10.84 ft at 6:15PM Mar 22, 2019Observed: 10.79 ft at 6:30PM Mar 22, 2019Observed: 10.83 ft at 6:45PM Mar 22, 2019Observed: 10.78 ft at 7:00PM Mar 22, 2019Observed: 10.77 ft at 7:15PM Mar 22, 2019Observed: 10.77 ft at 7:30PM Mar 22, 2019Observed: 10.73 ft at 7:45PM Mar 22, 2019Observed: 10.73 ft at 8:00PM Mar 22, 2019Observed: 10.7 ft at 8:15PM Mar 22, 2019Observed: 10.7 ft at 8:30PM Mar 22, 2019Observed: 10.69 ft at 8:45PM Mar 22, 2019Observed: 10.64 ft at 9:00PM Mar 22, 2019Observed: 10.65 ft at 9:15PM Mar 22, 2019Observed: 10.62 ft at 9:30PM Mar 22, 2019Observed: 10.56 ft at 9:45PM Mar 22, 2019Observed: 10.55 ft at 10:00PM Mar 22, 2019Observed: 10.53 ft at 10:15PM Mar 22, 2019Observed: 10.5 ft at 10:30PM Mar 22, 2019Observed: 10.48 ft at 10:45PM Mar 22, 2019Observed: 10.42 ft at 11:00PM Mar 22, 2019Observed: 10.39 ft at 11:15PM Mar 22, 2019Observed: 10.37 ft at 11:30PM Mar 22, 2019Observed: 10.36 ft at 11:45PM Mar 22, 2019Observed: 10.31 ft at 12:00AM Mar 23, 2019Observed: 10.28 ft at 12:15AM Mar 23, 2019Observed: 10.25 ft at 12:30AM Mar 23, 2019Observed: 10.22 ft at 12:45AM Mar 23, 2019Forecast: 10.9 ft 7:00AM Mar 23, 2019Forecast: 11.1 ft 1:00PM Mar 23, 2019Forecast: 11.3 ft 7:00PM Mar 23, 2019Forecast: 11.5 ft 1:00AM Mar 24, 2019Forecast: 11.4 ft 7:00AM Mar 24, 2019Forecast: 12 ft 1:00PM Mar 24, 2019Forecast: 12.9 ft 7:00PM Mar 24, 2019Highest Forecast: 13.2 ft 1:00AM Mar 25, 2019Forecast: 12.6 ft 7:00AM Mar 25, 2019Forecast: 11.6 ft 1:00PM Mar 25, 2019Forecast: 10.5 ft 7:00PM Mar 25, 2019Forecast: 9.8 ft 1:00AM Mar 26, 2019Forecast: 8.9 ft 7:00AM Mar 26, 2019Forecast: 8.2 ft 1:00PM Mar 26, 2019Forecast: 7.4 ft 7:00PM Mar 26, 2019Forecast: 7.2 ft 1:00AM Mar 27, 2019Forecast: 7 ft 7:00AM Mar 27, 2019Forecast: 6.9 ft 1:00PM Mar 27, 2019Forecast: 6.9 ft 7:00PM Mar 27, 2019Forecast: 6.9 ft 1:00AM Mar 28, 2019Forecast: 6.9 ft 7:00AM Mar 28, 2019Forecast: 6.8 ft 1:00PM Mar 28, 2019Forecast: 6.6 ft 7:00PM Mar 28, 2019Forecast: 6.4 ft 1:00AM Mar 29, 2019Forecast: 6.2 ft 7:00AM Mar 29, 2019Forecast: 5.9 ft 1:00PM Mar 29, 2019Forecast: 5.6 ft 7:00PM Mar 29, 2019Forecast: 5.3 ft 1:00AM Mar 30, 2019Forecast: 5 ft 7:00AM Mar 30, 2019Forecast: 4.7 ft 1:00PM Mar 30, 2019Forecast: 4.5 ft 7:00PM Mar 30, 2019Forecast: 4.3 ft 1:00AM Mar 31, 2019Forecast: 4.1 ft 7:00AM Mar 31, 2019Forecast: 4 ft 1:00PM Mar 31, 2019Forecast: 3.8 ft 7:00PM Mar 31, 2019Forecast: 3.7 ft 1:00AM Apr 01, 2019Forecast: 3.6 ft 7:00AM Apr 01, 2019Forecast: 3.6 ft 1:00PM Apr 01, 2019Forecast: 3.5 ft 7:00PM Apr 01, 2019USGS--Water Resources of the United StatesCOSS2(plotting HGIRG) Graph Created (1:18AM Mar 23, 2019)ObservedForecast (issued 8:21PM Mar 22)Latest observed value: 10.22 ft at 12:45 AM CDT 23-Mar-2019. Flood Stage is 8.5 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge reading may be affected by ice.

NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Split Rock Creek at Corson are issued as needed during times of high water, but are not routinely available.

Return to Area Map
Upstream Gauge - below Jasper Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 14
Moderate Flood Stage: 11
Flood Stage: 8.5
Action Stage: 7.5
Low Stage (in feet): -9999

Historic Crests
(1) 17.58 ft on 05/08/1993
(2) 16.16 ft on 06/17/2014
(3) 15.50 ft on 09/24/2010
(4) 15.00 ft on 04/08/1969
(5) 14.08 ft on 06/21/1984
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.80 ft on 06/21/2018
(2) 5.31 ft on 05/21/2017
(3) 6.43 ft on 05/01/2016
(4) 8.56 ft on 07/07/2015
(5) 16.16 ft on 06/17/2014
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
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
14 Highway 11 north of Corson begins to flood.
11 The nursery near the mouth of Split Rock Creek begins flooding if the Big Sioux River is high enough to cause a backwater effect. Highway 11 north of Highway 42 can be flooded if Beaver Creek flows are also high.
9 The parking lot at Badlands Motor Speedway may be flooded.
8.5 Flooding of the lower lying agricultural land begins.
Photos
(1) Upstream View
(2) Downstream View
About This Location Collapse

Latitude: 43.616389° N, Longitude: 96.565000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 8.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
Elevation
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other 1304.22 ft 1312.72 ft  

Current/Historical Observations:

Additional Information Collapse
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: 1-Mar-2019 12:34 AM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities