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
Rock River at Byron Stage (ft)Flow (kcfs)Observed: 7.85 ft at 12:00AM Apr 07, 2021Observed: 7.84 ft at 12:15AM Apr 07, 2021Observed: 7.85 ft at 12:30AM Apr 07, 2021Observed: 7.84 ft at 12:45AM Apr 07, 2021Observed: 7.85 ft at 1:00AM Apr 07, 2021Observed: 7.85 ft at 1:15AM Apr 07, 2021Observed: 7.85 ft at 1:30AM Apr 07, 2021Observed: 7.85 ft at 1:45AM Apr 07, 2021Observed: 7.85 ft at 2:00AM Apr 07, 2021Observed: 7.84 ft at 2:15AM Apr 07, 2021Observed: 7.84 ft at 2:30AM Apr 07, 2021Observed: 7.84 ft at 2:45AM Apr 07, 2021Observed: 7.84 ft at 3:00AM Apr 07, 2021Observed: 7.85 ft at 3:15AM Apr 07, 2021Observed: 7.84 ft at 3:30AM Apr 07, 2021Observed: 7.84 ft at 3:45AM Apr 07, 2021Observed: 7.84 ft at 4:00AM Apr 07, 2021Observed: 7.84 ft at 4:15AM Apr 07, 2021Observed: 7.84 ft at 4:30AM Apr 07, 2021Observed: 7.84 ft at 4:45AM Apr 07, 2021Observed: 7.84 ft at 5:00AM Apr 07, 2021Observed: 7.83 ft at 5:15AM Apr 07, 2021Observed: 7.83 ft at 5:30AM Apr 07, 2021Observed: 7.83 ft at 5:45AM Apr 07, 2021Observed: 7.84 ft at 6:00AM Apr 07, 2021Observed: 7.83 ft at 6:15AM Apr 07, 2021Observed: 7.83 ft at 6:30AM Apr 07, 2021Observed: 7.83 ft at 6:45AM Apr 07, 2021Observed: 7.83 ft at 7:00AM Apr 07, 2021Observed: 7.83 ft at 7:15AM Apr 07, 2021Observed: 7.83 ft at 7:30AM Apr 07, 2021Observed: 7.83 ft at 7:45AM Apr 07, 2021Observed: 7.82 ft at 8:00AM Apr 07, 2021Observed: 7.82 ft at 8:15AM Apr 07, 2021Observed: 7.82 ft at 8:30AM Apr 07, 2021Observed: 7.82 ft at 8:45AM Apr 07, 2021Observed: 7.82 ft at 9:00AM Apr 07, 2021Observed: 7.81 ft at 9:15AM Apr 07, 2021Observed: 7.82 ft at 9:30AM Apr 07, 2021Observed: 7.82 ft at 9:45AM Apr 07, 2021Observed: 7.81 ft at 10:00AM Apr 07, 2021Observed: 7.8 ft at 10:15AM Apr 07, 2021Observed: 7.81 ft at 10:30AM Apr 07, 2021Observed: 7.81 ft at 10:45AM Apr 07, 2021Observed: 7.79 ft at 11:00AM Apr 07, 2021Observed: 7.81 ft at 11:15AM Apr 07, 2021Observed: 7.8 ft at 11:30AM Apr 07, 2021Observed: 7.81 ft at 11:45AM Apr 07, 2021Observed: 7.8 ft at 12:00PM Apr 07, 2021Observed: 7.8 ft at 12:15PM Apr 07, 2021Observed: 7.8 ft at 12:30PM Apr 07, 2021Observed: 7.8 ft at 12:45PM Apr 07, 2021Observed: 7.8 ft at 1:00PM Apr 07, 2021Observed: 7.77 ft at 1:15PM Apr 07, 2021Observed: 7.81 ft at 1:30PM Apr 07, 2021Observed: 7.79 ft at 1:45PM Apr 07, 2021Observed: 7.85 ft at 2:00PM Apr 07, 2021Observed: 7.79 ft at 2:15PM Apr 07, 2021Observed: 7.79 ft at 2:30PM Apr 07, 2021Observed: 7.78 ft at 2:45PM Apr 07, 2021Observed: 7.79 ft at 3:00PM Apr 07, 2021Observed: 7.8 ft at 3:15PM Apr 07, 2021Observed: 7.8 ft at 3:30PM Apr 07, 2021Observed: 7.79 ft at 3:45PM Apr 07, 2021Observed: 7.79 ft at 4:00PM Apr 07, 2021Observed: 7.77 ft at 4:15PM Apr 07, 2021Observed: 7.79 ft at 4:30PM Apr 07, 2021Observed: 7.79 ft at 4:45PM Apr 07, 2021Observed: 7.79 ft at 5:00PM Apr 07, 2021Observed: 7.79 ft at 5:15PM Apr 07, 2021Observed: 7.79 ft at 5:30PM Apr 07, 2021Observed: 7.79 ft at 5:45PM Apr 07, 2021Observed: 7.79 ft at 6:00PM Apr 07, 2021Observed: 7.78 ft at 6:15PM Apr 07, 2021Observed: 7.78 ft at 6:30PM Apr 07, 2021Observed: 7.78 ft at 6:45PM Apr 07, 2021Observed: 7.78 ft at 7:00PM Apr 07, 2021Observed: 7.78 ft at 7:15PM Apr 07, 2021Observed: 7.78 ft at 7:30PM Apr 07, 2021Observed: 7.77 ft at 7:45PM Apr 07, 2021Observed: 7.77 ft at 8:00PM Apr 07, 2021Observed: 7.77 ft at 8:15PM Apr 07, 2021Observed: 7.78 ft at 8:30PM Apr 07, 2021Observed: 7.77 ft at 8:45PM Apr 07, 2021Observed: 7.77 ft at 9:00PM Apr 07, 2021Observed: 7.77 ft at 9:15PM Apr 07, 2021Observed: 7.77 ft at 9:30PM Apr 07, 2021Observed: 7.77 ft at 9:45PM Apr 07, 2021Observed: 7.77 ft at 10:00PM Apr 07, 2021Observed: 7.77 ft at 10:15PM Apr 07, 2021Observed: 7.77 ft at 10:30PM Apr 07, 2021Observed: 7.76 ft at 10:45PM Apr 07, 2021Observed: 7.77 ft at 11:00PM Apr 07, 2021Observed: 7.73 ft at 11:15PM Apr 07, 2021Observed: 7.74 ft at 11:30PM Apr 07, 2021Observed: 7.77 ft at 11:45PM Apr 07, 2021Observed: 7.77 ft at 12:00AM Apr 08, 2021Observed: 7.78 ft at 12:15AM Apr 08, 2021Observed: 7.78 ft at 12:30AM Apr 08, 2021Observed: 7.77 ft at 12:45AM Apr 08, 2021Observed: 7.77 ft at 1:00AM Apr 08, 2021Observed: 7.77 ft at 1:15AM Apr 08, 2021Observed: 7.79 ft at 1:30AM Apr 08, 2021Observed: 7.78 ft at 1:45AM Apr 08, 2021Observed: 7.79 ft at 2:00AM Apr 08, 2021Observed: 7.78 ft at 2:15AM Apr 08, 2021Observed: 7.78 ft at 2:30AM Apr 08, 2021Observed: 7.78 ft at 2:45AM Apr 08, 2021Observed: 7.78 ft at 3:00AM Apr 08, 2021Observed: 7.78 ft at 3:15AM Apr 08, 2021Observed: 7.78 ft at 3:30AM Apr 08, 2021Observed: 7.78 ft at 3:45AM Apr 08, 2021Observed: 7.76 ft at 4:00AM Apr 08, 2021Observed: 7.78 ft at 4:15AM Apr 08, 2021Observed: 7.77 ft at 4:30AM Apr 08, 2021Observed: 7.78 ft at 4:45AM Apr 08, 2021Observed: 7.78 ft at 5:00AM Apr 08, 2021Observed: 7.79 ft at 5:15AM Apr 08, 2021Observed: 7.79 ft at 5:30AM Apr 08, 2021Observed: 7.79 ft at 5:45AM Apr 08, 2021Observed: 7.79 ft at 6:00AM Apr 08, 2021Observed: 7.8 ft at 6:15AM Apr 08, 2021Observed: 7.79 ft at 6:30AM Apr 08, 2021Observed: 7.79 ft at 6:45AM Apr 08, 2021Observed: 7.8 ft at 7:00AM Apr 08, 2021Observed: 7.8 ft at 7:15AM Apr 08, 2021Observed: 7.8 ft at 7:30AM Apr 08, 2021Observed: 7.77 ft at 7:45AM Apr 08, 2021Observed: 7.79 ft at 8:00AM Apr 08, 2021Observed: 7.8 ft at 8:15AM Apr 08, 2021Observed: 7.81 ft at 8:30AM Apr 08, 2021Observed: 7.8 ft at 8:45AM Apr 08, 2021Observed: 7.82 ft at 9:00AM Apr 08, 2021Observed: 7.81 ft at 9:15AM Apr 08, 2021Observed: 7.82 ft at 9:30AM Apr 08, 2021Observed: 7.83 ft at 9:45AM Apr 08, 2021Observed: 7.79 ft at 10:00AM Apr 08, 2021Observed: 7.82 ft at 10:15AM Apr 08, 2021Observed: 7.82 ft at 10:30AM Apr 08, 2021Observed: 7.83 ft at 10:45AM Apr 08, 2021Observed: 7.82 ft at 11:00AM Apr 08, 2021Observed: 7.83 ft at 11:15AM Apr 08, 2021Observed: 7.83 ft at 11:30AM Apr 08, 2021Observed: 7.83 ft at 11:45AM Apr 08, 2021Observed: 7.82 ft at 12:00PM Apr 08, 2021Observed: 7.81 ft at 12:15PM Apr 08, 2021Observed: 7.81 ft at 12:30PM Apr 08, 2021Observed: 7.82 ft at 12:45PM Apr 08, 2021Observed: 7.83 ft at 1:00PM Apr 08, 2021Observed: 7.82 ft at 1:15PM Apr 08, 2021Observed: 7.82 ft at 1:30PM Apr 08, 2021Observed: 7.81 ft at 1:45PM Apr 08, 2021Observed: 7.81 ft at 2:00PM Apr 08, 2021Observed: 7.81 ft at 2:15PM Apr 08, 2021Observed: 7.81 ft at 2:30PM Apr 08, 2021Observed: 7.81 ft at 2:45PM Apr 08, 2021Observed: 7.81 ft at 3:00PM Apr 08, 2021Observed: 7.81 ft at 3:15PM Apr 08, 2021Observed: 7.81 ft at 3:30PM Apr 08, 2021Observed: 7.81 ft at 3:45PM Apr 08, 2021Observed: 7.81 ft at 4:00PM Apr 08, 2021Observed: 7.8 ft at 4:15PM Apr 08, 2021Observed: 7.79 ft at 4:30PM Apr 08, 2021Observed: 7.8 ft at 4:45PM Apr 08, 2021Observed: 7.78 ft at 5:00PM Apr 08, 2021Observed: 7.81 ft at 5:15PM Apr 08, 2021Observed: 7.82 ft at 5:30PM Apr 08, 2021Observed: 7.81 ft at 5:45PM Apr 08, 2021Observed: 7.81 ft at 6:00PM Apr 08, 2021Observed: 7.77 ft at 6:15PM Apr 08, 2021Observed: 7.77 ft at 6:30PM Apr 08, 2021Observed: 7.8 ft at 6:45PM Apr 08, 2021Observed: 7.8 ft at 7:00PM Apr 08, 2021Observed: 7.81 ft at 7:15PM Apr 08, 2021Observed: 7.8 ft at 7:30PM Apr 08, 2021Observed: 7.82 ft at 7:45PM Apr 08, 2021Observed: 7.81 ft at 8:00PM Apr 08, 2021Observed: 7.81 ft at 8:15PM Apr 08, 2021Observed: 7.82 ft at 8:30PM Apr 08, 2021Observed: 7.81 ft at 8:45PM Apr 08, 2021Observed: 7.82 ft at 9:00PM Apr 08, 2021Observed: 7.81 ft at 9:15PM Apr 08, 2021Observed: 7.81 ft at 9:30PM Apr 08, 2021Observed: 7.81 ft at 9:45PM Apr 08, 2021Observed: 7.81 ft at 10:00PM Apr 08, 2021Observed: 7.81 ft at 10:15PM Apr 08, 2021Observed: 7.81 ft at 10:30PM Apr 08, 2021Observed: 7.81 ft at 10:45PM Apr 08, 2021Observed: 7.81 ft at 11:00PM Apr 08, 2021Observed: 7.81 ft at 11:15PM Apr 08, 2021Observed: 7.8 ft at 11:30PM Apr 08, 2021Observed: 7.81 ft at 11:45PM Apr 08, 2021Observed: 7.81 ft at 12:00AM Apr 09, 2021Observed: 7.81 ft at 12:15AM Apr 09, 2021Observed: 7.81 ft at 12:30AM Apr 09, 2021Observed: 7.81 ft at 12:45AM Apr 09, 2021Observed: 7.81 ft at 1:00AM Apr 09, 2021Observed: 7.81 ft at 1:15AM Apr 09, 2021Observed: 7.81 ft at 1:30AM Apr 09, 2021Observed: 7.81 ft at 1:45AM Apr 09, 2021Observed: 7.81 ft at 2:00AM Apr 09, 2021Observed: 7.8 ft at 2:15AM Apr 09, 2021Observed: 7.81 ft at 2:30AM Apr 09, 2021Observed: 7.81 ft at 2:45AM Apr 09, 2021Observed: 7.82 ft at 3:00AM Apr 09, 2021Observed: 7.82 ft at 3:15AM Apr 09, 2021Observed: 7.82 ft at 3:30AM Apr 09, 2021Observed: 7.82 ft at 3:45AM Apr 09, 2021Observed: 7.82 ft at 4:00AM Apr 09, 2021Observed: 7.82 ft at 4:15AM Apr 09, 2021Observed: 7.83 ft at 4:30AM Apr 09, 2021Observed: 7.82 ft at 4:45AM Apr 09, 2021Observed: 7.83 ft at 5:00AM Apr 09, 2021Observed: 7.83 ft at 5:15AM Apr 09, 2021Observed: 7.82 ft at 5:30AM Apr 09, 2021Observed: 7.82 ft at 5:45AM Apr 09, 2021Observed: 7.82 ft at 6:00AM Apr 09, 2021Observed: 7.82 ft at 6:15AM Apr 09, 2021Observed: 7.82 ft at 6:30AM Apr 09, 2021Observed: 7.82 ft at 6:45AM Apr 09, 2021Observed: 7.82 ft at 7:00AM Apr 09, 2021Observed: 7.82 ft at 7:15AM Apr 09, 2021Observed: 7.82 ft at 7:30AM Apr 09, 2021Observed: 7.82 ft at 7:45AM Apr 09, 2021Observed: 7.82 ft at 8:00AM Apr 09, 2021Observed: 7.81 ft at 8:15AM Apr 09, 2021Observed: 7.82 ft at 8:30AM Apr 09, 2021Observed: 7.82 ft at 8:45AM Apr 09, 2021Observed: 7.81 ft at 9:00AM Apr 09, 2021Observed: 7.82 ft at 9:15AM Apr 09, 2021Observed: 7.8 ft at 9:30AM Apr 09, 2021Observed: 7.81 ft at 9:45AM Apr 09, 2021Observed: 7.79 ft at 10:00AM Apr 09, 2021Observed: 7.79 ft at 10:15AM Apr 09, 2021Observed: 7.79 ft at 10:30AM Apr 09, 2021Observed: 7.78 ft at 10:45AM Apr 09, 2021Observed: 7.8 ft at 11:00AM Apr 09, 2021Observed: 7.8 ft at 11:15AM Apr 09, 2021Observed: 7.79 ft at 11:30AM Apr 09, 2021Observed: 7.79 ft at 11:45AM Apr 09, 2021Observed: 7.8 ft at 12:00PM Apr 09, 2021Observed: 7.79 ft at 12:15PM Apr 09, 2021Observed: 7.79 ft at 12:30PM Apr 09, 2021Observed: 7.78 ft at 12:45PM Apr 09, 2021Observed: 7.8 ft at 1:00PM Apr 09, 2021Observed: 7.83 ft at 1:15PM Apr 09, 2021Observed: 7.82 ft at 1:30PM Apr 09, 2021Observed: 7.8 ft at 1:45PM Apr 09, 2021Observed: 7.83 ft at 2:00PM Apr 09, 2021Observed: 7.82 ft at 2:15PM Apr 09, 2021Observed: 7.81 ft at 2:30PM Apr 09, 2021Observed: 7.8 ft at 2:45PM Apr 09, 2021Observed: 7.82 ft at 3:00PM Apr 09, 2021Observed: 7.84 ft at 3:15PM Apr 09, 2021Observed: 7.83 ft at 3:30PM Apr 09, 2021Observed: 7.83 ft at 3:45PM Apr 09, 2021Observed: 7.83 ft at 4:00PM Apr 09, 2021Observed: 7.85 ft at 4:15PM Apr 09, 2021Observed: 7.82 ft at 4:30PM Apr 09, 2021Observed: 7.84 ft at 4:45PM Apr 09, 2021Observed: 7.82 ft at 5:00PM Apr 09, 2021Observed: 7.8 ft at 5:15PM Apr 09, 2021Observed: 7.82 ft at 5:30PM Apr 09, 2021Observed: 7.81 ft at 5:45PM Apr 09, 2021Observed: 7.8 ft at 6:00PM Apr 09, 2021Observed: 7.82 ft at 6:15PM Apr 09, 2021Observed: 7.8 ft at 6:30PM Apr 09, 2021Observed: 7.79 ft at 6:45PM Apr 09, 2021Observed: 7.81 ft at 7:00PM Apr 09, 2021Observed: 7.79 ft at 7:15PM Apr 09, 2021Observed: 7.78 ft at 7:30PM Apr 09, 2021Observed: 7.77 ft at 7:45PM Apr 09, 2021Observed: 7.78 ft at 8:00PM Apr 09, 2021Observed: 7.78 ft at 8:15PM Apr 09, 2021Observed: 7.8 ft at 8:30PM Apr 09, 2021Observed: 7.79 ft at 8:45PM Apr 09, 2021Observed: 7.78 ft at 9:00PM Apr 09, 2021Observed: 7.79 ft at 9:15PM Apr 09, 2021Observed: 7.78 ft at 9:30PM Apr 09, 2021Observed: 7.78 ft at 9:45PM Apr 09, 2021Observed: 7.8 ft at 10:00PM Apr 09, 2021Observed: 7.8 ft at 10:15PM Apr 09, 2021Observed: 7.79 ft at 10:30PM Apr 09, 2021Observed: 7.78 ft at 10:45PM Apr 09, 2021Observed: 7.78 ft at 11:00PM Apr 09, 2021Observed: 7.77 ft at 11:15PM Apr 09, 2021Observed: 7.79 ft at 11:30PM Apr 09, 2021Observed: 7.8 ft at 11:45PM Apr 09, 2021Observed: 7.79 ft at 12:00AM Apr 10, 2021Observed: 7.79 ft at 12:15AM Apr 10, 2021Observed: 7.8 ft at 12:30AM Apr 10, 2021Observed: 7.8 ft at 12:45AM Apr 10, 2021Observed: 7.78 ft at 1:00AM Apr 10, 2021Observed: 7.8 ft at 1:15AM Apr 10, 2021Observed: 7.78 ft at 1:30AM Apr 10, 2021Observed: 7.77 ft at 1:45AM Apr 10, 2021Observed: 7.77 ft at 2:00AM Apr 10, 2021Observed: 7.8 ft at 2:15AM Apr 10, 2021Observed: 7.8 ft at 2:30AM Apr 10, 2021Observed: 7.8 ft at 2:45AM Apr 10, 2021Observed: 7.79 ft at 3:00AM Apr 10, 2021Observed: 7.8 ft at 3:15AM Apr 10, 2021Observed: 7.79 ft at 3:30AM Apr 10, 2021Observed: 7.8 ft at 3:45AM Apr 10, 2021Observed: 7.79 ft at 4:00AM Apr 10, 2021Observed: 7.79 ft at 4:15AM Apr 10, 2021Observed: 7.79 ft at 4:30AM Apr 10, 2021Observed: 7.79 ft at 4:45AM Apr 10, 2021Observed: 7.79 ft at 5:00AM Apr 10, 2021Observed: 7.79 ft at 5:15AM Apr 10, 2021Observed: 7.79 ft at 5:30AM Apr 10, 2021Observed: 7.78 ft at 5:45AM Apr 10, 2021Observed: 7.78 ft at 6:00AM Apr 10, 2021Observed: 7.78 ft at 6:15AM Apr 10, 2021Observed: 7.79 ft at 6:30AM Apr 10, 2021Observed: 7.78 ft at 6:45AM Apr 10, 2021Observed: 7.78 ft at 7:00AM Apr 10, 2021Observed: 7.78 ft at 7:15AM Apr 10, 2021Observed: 7.78 ft at 7:30AM Apr 10, 2021Observed: 7.78 ft at 7:45AM Apr 10, 2021Observed: 7.78 ft at 8:00AM Apr 10, 2021Observed: 7.77 ft at 8:15AM Apr 10, 2021Observed: 7.77 ft at 8:30AM Apr 10, 2021Observed: 7.77 ft at 8:45AM Apr 10, 2021Observed: 7.77 ft at 9:00AM Apr 10, 2021Observed: 7.76 ft at 9:15AM Apr 10, 2021Observed: 7.76 ft at 9:30AM Apr 10, 2021Observed: 7.76 ft at 9:45AM Apr 10, 2021Observed: 7.77 ft at 10:00AM Apr 10, 2021Observed: 7.76 ft at 10:15AM Apr 10, 2021Observed: 7.76 ft at 10:30AM Apr 10, 2021Observed: 7.75 ft at 10:45AM Apr 10, 2021Observed: 7.76 ft at 11:00AM Apr 10, 2021Observed: 7.77 ft at 11:15AM Apr 10, 2021Observed: 7.77 ft at 11:30AM Apr 10, 2021Observed: 7.76 ft at 11:45AM Apr 10, 2021Observed: 7.77 ft at 12:00PM Apr 10, 2021Observed: 7.78 ft at 12:15PM Apr 10, 2021Observed: 7.79 ft at 12:30PM Apr 10, 2021Observed: 7.77 ft at 12:45PM Apr 10, 2021Observed: 7.78 ft at 1:00PM Apr 10, 2021Observed: 7.78 ft at 1:15PM Apr 10, 2021Observed: 7.8 ft at 1:30PM Apr 10, 2021Observed: 7.79 ft at 1:45PM Apr 10, 2021Observed: 7.79 ft at 2:00PM Apr 10, 2021Observed: 7.79 ft at 2:15PM Apr 10, 2021Observed: 7.79 ft at 2:30PM Apr 10, 2021Observed: 7.79 ft at 2:45PM Apr 10, 2021Observed: 7.8 ft at 3:00PM Apr 10, 2021Observed: 7.79 ft at 3:15PM Apr 10, 2021Observed: 7.8 ft at 3:30PM Apr 10, 2021Observed: 7.79 ft at 3:45PM Apr 10, 2021Observed: 7.81 ft at 4:00PM Apr 10, 2021Observed: 7.8 ft at 4:15PM Apr 10, 2021Observed: 7.79 ft at 4:30PM Apr 10, 2021Observed: 7.8 ft at 4:45PM Apr 10, 2021Observed: 7.79 ft at 5:00PM Apr 10, 2021Observed: 7.8 ft at 5:15PM Apr 10, 2021Observed: 7.79 ft at 5:30PM Apr 10, 2021Observed: 7.81 ft at 5:45PM Apr 10, 2021Observed: 7.81 ft at 6:00PM Apr 10, 2021Observed: 7.82 ft at 6:15PM Apr 10, 2021Observed: 7.81 ft at 6:30PM Apr 10, 2021Observed: 7.81 ft at 6:45PM Apr 10, 2021Observed: 7.84 ft at 7:00PM Apr 10, 2021Observed: 7.84 ft at 7:15PM Apr 10, 2021Observed: 7.84 ft at 7:30PM Apr 10, 2021Observed: 7.85 ft at 7:45PM Apr 10, 2021Observed: 7.85 ft at 8:00PM Apr 10, 2021Observed: 7.86 ft at 8:15PM Apr 10, 2021Observed: 7.85 ft at 8:30PM Apr 10, 2021Observed: 7.87 ft at 8:45PM Apr 10, 2021Observed: 7.89 ft at 9:00PM Apr 10, 2021Observed: 7.9 ft at 9:15PM Apr 10, 2021Observed: 7.9 ft at 9:30PM Apr 10, 2021Observed: 7.9 ft at 9:45PM Apr 10, 2021Observed: 7.9 ft at 10:00PM Apr 10, 2021Observed: 7.9 ft at 10:15PM Apr 10, 2021Observed: 7.9 ft at 10:30PM Apr 10, 2021Observed: 7.9 ft at 10:45PM Apr 10, 2021Observed: 7.9 ft at 11:00PM Apr 10, 2021Observed: 7.91 ft at 11:15PM Apr 10, 2021Observed: 7.91 ft at 11:30PM Apr 10, 2021Observed: 7.91 ft at 11:45PM Apr 10, 2021Observed: 7.92 ft at 12:00AM Apr 11, 2021Observed: 7.93 ft at 12:15AM Apr 11, 2021Observed: 7.93 ft at 12:30AM Apr 11, 2021Observed: 7.93 ft at 12:45AM Apr 11, 2021Observed: 7.94 ft at 1:00AM Apr 11, 2021Observed: 7.93 ft at 1:15AM Apr 11, 2021Observed: 7.92 ft at 1:30AM Apr 11, 2021Observed: 7.95 ft at 1:45AM Apr 11, 2021Observed: 7.96 ft at 2:00AM Apr 11, 2021Observed: 7.97 ft at 2:15AM Apr 11, 2021Observed: 7.97 ft at 2:30AM Apr 11, 2021Observed: 7.97 ft at 2:45AM Apr 11, 2021Observed: 7.97 ft at 3:00AM Apr 11, 2021Observed: 7.98 ft at 3:15AM Apr 11, 2021Observed: 7.97 ft at 3:30AM Apr 11, 2021Observed: 7.98 ft at 3:45AM Apr 11, 2021Observed: 7.98 ft at 4:00AM Apr 11, 2021Observed: 8 ft at 4:15AM Apr 11, 2021Observed: 8 ft at 4:30AM Apr 11, 2021Observed: 8.01 ft at 4:45AM Apr 11, 2021Observed: 8.02 ft at 5:00AM Apr 11, 2021Observed: 8.03 ft at 5:15AM Apr 11, 2021Observed: 8.03 ft at 5:30AM Apr 11, 2021Observed: 8.03 ft at 5:45AM Apr 11, 2021Observed: 8.04 ft at 6:00AM Apr 11, 2021Observed: 8.04 ft at 6:15AM Apr 11, 2021Observed: 8.05 ft at 6:30AM Apr 11, 2021Observed: 8.06 ft at 6:45AM Apr 11, 2021Observed: 8.06 ft at 7:00AM Apr 11, 2021Observed: 8.07 ft at 7:15AM Apr 11, 2021Observed: 8.07 ft at 7:30AM Apr 11, 2021Observed: 8.08 ft at 7:45AM Apr 11, 2021Observed: 8.08 ft at 8:00AM Apr 11, 2021Observed: 8.08 ft at 8:15AM Apr 11, 2021Observed: 8.09 ft at 8:30AM Apr 11, 2021Observed: 8.09 ft at 8:45AM Apr 11, 2021Observed: 8.09 ft at 9:00AM Apr 11, 2021Observed: 8.09 ft at 9:15AM Apr 11, 2021Observed: 8.1 ft at 9:30AM Apr 11, 2021Observed: 8.1 ft at 9:45AM Apr 11, 2021Observed: 8.1 ft at 10:00AM Apr 11, 2021Observed: 8.1 ft at 10:15AM Apr 11, 2021Observed: 8.1 ft at 10:30AM Apr 11, 2021Observed: 8.1 ft at 10:45AM Apr 11, 2021Observed: 8.11 ft at 11:00AM Apr 11, 2021Observed: 8.1 ft at 11:15AM Apr 11, 2021Observed: 8.11 ft at 11:30AM Apr 11, 2021Observed: 8.11 ft at 11:45AM Apr 11, 2021Observed: 8.11 ft at 12:00PM Apr 11, 2021Observed: 8.12 ft at 12:15PM Apr 11, 2021Observed: 8.12 ft at 12:30PM Apr 11, 2021Observed: 8.12 ft at 12:45PM Apr 11, 2021Observed: 8.12 ft at 1:00PM Apr 11, 2021Observed: 8.13 ft at 1:15PM Apr 11, 2021Observed: 8.13 ft at 1:30PM Apr 11, 2021Observed: 8.13 ft at 1:45PM Apr 11, 2021Observed: 8.13 ft at 2:00PM Apr 11, 2021Observed: 8.12 ft at 2:15PM Apr 11, 2021Observed: 8.11 ft at 2:30PM Apr 11, 2021Observed: 8.13 ft at 2:45PM Apr 11, 2021Observed: 8.12 ft at 3:00PM Apr 11, 2021Observed: 8.12 ft at 3:15PM Apr 11, 2021Observed: 8.14 ft at 3:30PM Apr 11, 2021Observed: 8.15 ft at 3:45PM Apr 11, 2021Observed: 8.14 ft at 4:00PM Apr 11, 2021Observed: 8.14 ft at 4:15PM Apr 11, 2021Observed: 8.14 ft at 4:30PM Apr 11, 2021Observed: 8.13 ft at 4:45PM Apr 11, 2021Observed: 8.15 ft at 5:00PM Apr 11, 2021Observed: 8.15 ft at 5:15PM Apr 11, 2021Observed: 8.14 ft at 5:30PM Apr 11, 2021Observed: 8.15 ft at 5:45PM Apr 11, 2021Observed: 8.16 ft at 6:00PM Apr 11, 2021Observed: 8.17 ft at 6:15PM Apr 11, 2021Observed: 8.17 ft at 6:30PM Apr 11, 2021Observed: 8.18 ft at 6:45PM Apr 11, 2021Observed: 8.18 ft at 7:00PM Apr 11, 2021Observed: 8.19 ft at 7:15PM Apr 11, 2021Observed: 8.17 ft at 7:30PM Apr 11, 2021Observed: 8.17 ft at 7:45PM Apr 11, 2021Observed: 8.17 ft at 8:00PM Apr 11, 2021Observed: 8.17 ft at 8:15PM Apr 11, 2021Observed: 8.19 ft at 8:30PM Apr 11, 2021Observed: 8.18 ft at 8:45PM Apr 11, 2021Observed: 8.19 ft at 9:00PM Apr 11, 2021Observed: 8.19 ft at 9:15PM Apr 11, 2021Observed: 8.21 ft at 9:30PM Apr 11, 2021Observed: 8.21 ft at 9:45PM Apr 11, 2021Observed: 8.21 ft at 10:00PM Apr 11, 2021Observed: 8.21 ft at 10:15PM Apr 11, 2021Observed: 8.21 ft at 10:30PM Apr 11, 2021Observed: 8.23 ft at 10:45PM Apr 11, 2021Observed: 8.23 ft at 11:00PM Apr 11, 2021Observed: 8.24 ft at 11:15PM Apr 11, 2021Observed: 8.24 ft at 11:30PM Apr 11, 2021Observed: 8.25 ft at 11:45PM Apr 11, 2021Observed: 8.25 ft at 12:00AM Apr 12, 2021Observed: 8.25 ft at 12:15AM Apr 12, 2021Observed: 8.26 ft at 12:30AM Apr 12, 2021Observed: 8.26 ft at 12:45AM Apr 12, 2021Observed: 8.26 ft at 1:00AM Apr 12, 2021Observed: 8.26 ft at 1:15AM Apr 12, 2021Observed: 8.26 ft at 1:30AM Apr 12, 2021Observed: 8.27 ft at 1:45AM Apr 12, 2021Observed: 8.28 ft at 2:00AM Apr 12, 2021Observed: 8.27 ft at 2:15AM Apr 12, 2021Observed: 8.27 ft at 2:30AM Apr 12, 2021Observed: 8.27 ft at 2:45AM Apr 12, 2021Observed: 8.27 ft at 3:00AM Apr 12, 2021Observed: 8.28 ft at 3:15AM Apr 12, 2021Observed: 8.28 ft at 3:30AM Apr 12, 2021Observed: 8.29 ft at 3:45AM Apr 12, 2021Observed: 8.29 ft at 4:00AM Apr 12, 2021Observed: 8.26 ft at 4:15AM Apr 12, 2021Observed: 8.29 ft at 4:30AM Apr 12, 2021Observed: 8.28 ft at 4:45AM Apr 12, 2021Observed: 8.28 ft at 5:00AM Apr 12, 2021Observed: 8.29 ft at 5:15AM Apr 12, 2021Observed: 8.3 ft at 5:30AM Apr 12, 2021Observed: 8.29 ft at 5:45AM Apr 12, 2021Observed: 8.3 ft at 6:00AM Apr 12, 2021Observed: 8.3 ft at 6:15AM Apr 12, 2021Observed: 8.29 ft at 6:30AM Apr 12, 2021Observed: 8.3 ft at 6:45AM Apr 12, 2021Observed: 8.32 ft at 7:00AM Apr 12, 2021Observed: 8.3 ft at 7:15AM Apr 12, 2021Observed: 8.32 ft at 7:30AM Apr 12, 2021Observed: 8.31 ft at 7:45AM Apr 12, 2021Observed: 8.31 ft at 8:00AM Apr 12, 2021Observed: 8.31 ft at 8:15AM Apr 12, 2021Observed: 8.32 ft at 8:30AM Apr 12, 2021Observed: 8.35 ft at 8:45AM Apr 12, 2021Observed: 8.35 ft at 9:00AM Apr 12, 2021Observed: 8.34 ft at 9:15AM Apr 12, 2021Observed: 8.35 ft at 9:30AM Apr 12, 2021Observed: 8.35 ft at 9:45AM Apr 12, 2021Observed: 8.33 ft at 10:00AM Apr 12, 2021Observed: 8.35 ft at 10:15AM Apr 12, 2021Observed: 8.38 ft at 10:30AM Apr 12, 2021Observed: 8.41 ft at 10:45AM Apr 12, 2021Observed: 8.35 ft at 11:00AM Apr 12, 2021Observed: 8.37 ft at 11:15AM Apr 12, 2021Observed: 8.36 ft at 11:30AM Apr 12, 2021Observed: 8.39 ft at 11:45AM Apr 12, 2021Observed: 8.38 ft at 12:00PM Apr 12, 2021Observed: 8.38 ft at 12:15PM Apr 12, 2021Observed: 8.42 ft at 12:30PM Apr 12, 2021Observed: 8.4 ft at 12:45PM Apr 12, 2021Observed: 8.4 ft at 1:00PM Apr 12, 2021Observed: 8.39 ft at 1:15PM Apr 12, 2021Observed: 8.41 ft at 1:30PM Apr 12, 2021Observed: 8.43 ft at 1:45PM Apr 12, 2021Observed: 8.41 ft at 2:00PM Apr 12, 2021Observed: 8.42 ft at 2:15PM Apr 12, 2021Observed: 8.44 ft at 2:30PM Apr 12, 2021Observed: 8.41 ft at 2:45PM Apr 12, 2021Observed: 8.43 ft at 3:00PM Apr 12, 2021Observed: 8.42 ft at 3:15PM Apr 12, 2021Observed: 8.45 ft at 3:30PM Apr 12, 2021Observed: 8.4 ft at 3:45PM Apr 12, 2021Observed: 8.46 ft at 4:00PM Apr 12, 2021Observed: 8.47 ft at 4:15PM Apr 12, 2021Observed: 8.47 ft at 4:30PM Apr 12, 2021Observed: 8.45 ft at 4:45PM Apr 12, 2021Observed: 8.45 ft at 5:00PM Apr 12, 2021Observed: 8.46 ft at 5:15PM Apr 12, 2021Observed: 8.46 ft at 5:30PM Apr 12, 2021Observed: 8.51 ft at 5:45PM Apr 12, 2021Observed: 8.44 ft at 6:00PM Apr 12, 2021Observed: 8.45 ft at 6:15PM Apr 12, 2021Observed: 8.43 ft at 6:30PM Apr 12, 2021Observed: 8.44 ft at 6:45PM Apr 12, 2021Observed: 8.43 ft at 7:00PM Apr 12, 2021Observed: 8.42 ft at 7:15PM Apr 12, 2021Observed: 8.44 ft at 7:30PM Apr 12, 2021Observed: 8.44 ft at 7:45PM Apr 12, 2021Observed: 8.44 ft at 8:00PM Apr 12, 2021Observed: 8.45 ft at 8:15PM Apr 12, 2021Observed: 8.45 ft at 8:30PM Apr 12, 2021Observed: 8.45 ft at 8:45PM Apr 12, 2021Observed: 8.46 ft at 9:00PM Apr 12, 2021Observed: 8.45 ft at 9:15PM Apr 12, 2021Observed: 8.45 ft at 9:30PM Apr 12, 2021Observed: 8.45 ft at 9:45PM Apr 12, 2021Observed: 8.46 ft at 10:00PM Apr 12, 2021Observed: 8.46 ft at 10:15PM Apr 12, 2021Observed: 8.46 ft at 10:30PM Apr 12, 2021Observed: 8.45 ft at 10:45PM Apr 12, 2021Observed: 8.46 ft at 11:00PM Apr 12, 2021Observed: 8.44 ft at 11:15PM Apr 12, 2021Observed: 8.45 ft at 11:30PM Apr 12, 2021Observed: 8.47 ft at 11:45PM Apr 12, 2021Observed: 8.45 ft at 12:00AM Apr 13, 2021Observed: 8.45 ft at 12:15AM Apr 13, 2021Observed: 8.45 ft at 12:30AM Apr 13, 2021Observed: 8.47 ft at 12:45AM Apr 13, 2021Observed: 8.45 ft at 1:00AM Apr 13, 2021Observed: 8.44 ft at 1:15AM Apr 13, 2021Observed: 8.44 ft at 1:30AM Apr 13, 2021Observed: 8.45 ft at 1:45AM Apr 13, 2021Observed: 8.45 ft at 2:00AM Apr 13, 2021Observed: 8.45 ft at 2:15AM Apr 13, 2021Observed: 8.45 ft at 2:30AM Apr 13, 2021Observed: 8.45 ft at 2:45AM Apr 13, 2021Observed: 8.45 ft at 3:00AM Apr 13, 2021Observed: 8.46 ft at 3:15AM Apr 13, 2021Observed: 8.45 ft at 3:30AM Apr 13, 2021Observed: 8.45 ft at 3:45AM Apr 13, 2021Observed: 8.45 ft at 4:00AM Apr 13, 2021Observed: 8.45 ft at 4:15AM Apr 13, 2021Observed: 8.44 ft at 4:30AM Apr 13, 2021Observed: 8.45 ft at 4:45AM Apr 13, 2021Observed: 8.45 ft at 5:00AM Apr 13, 2021Observed: 8.45 ft at 5:15AM Apr 13, 2021Observed: 8.44 ft at 5:30AM Apr 13, 2021Observed: 8.46 ft at 5:45AM Apr 13, 2021Observed: 8.46 ft at 6:00AM Apr 13, 2021Observed: 8.45 ft at 6:15AM Apr 13, 2021Observed: 8.46 ft at 6:30AM Apr 13, 2021Observed: 8.45 ft at 6:45AM Apr 13, 2021Observed: 8.45 ft at 7:00AM Apr 13, 2021Observed: 8.46 ft at 7:15AM Apr 13, 2021Observed: 8.44 ft at 7:30AM Apr 13, 2021Observed: 8.46 ft at 7:45AM Apr 13, 2021Observed: 8.47 ft at 8:00AM Apr 13, 2021Observed: 8.47 ft at 8:15AM Apr 13, 2021Observed: 8.47 ft at 8:30AM Apr 13, 2021Observed: 8.48 ft at 8:45AM Apr 13, 2021Observed: 8.47 ft at 9:00AM Apr 13, 2021Observed: 8.48 ft at 9:15AM Apr 13, 2021Observed: 8.47 ft at 9:30AM Apr 13, 2021Observed: 8.48 ft at 9:45AM Apr 13, 2021Observed: 8.5 ft at 10:00AM Apr 13, 2021Observed: 8.49 ft at 10:15AM Apr 13, 2021Observed: 8.48 ft at 10:30AM Apr 13, 2021Observed: 8.49 ft at 10:45AM Apr 13, 2021Observed: 8.51 ft at 11:00AM Apr 13, 2021Observed: 8.5 ft at 11:15AM Apr 13, 2021Observed: 8.47 ft at 11:30AM Apr 13, 2021Observed: 8.48 ft at 11:45AM Apr 13, 2021Observed: 8.48 ft at 12:00PM Apr 13, 2021Observed: 8.45 ft at 12:15PM Apr 13, 2021Observed: 8.47 ft at 12:30PM Apr 13, 2021Observed: 8.47 ft at 12:45PM Apr 13, 2021Observed: 8.46 ft at 1:00PM Apr 13, 2021Observed: 8.46 ft at 1:15PM Apr 13, 2021Observed: 8.48 ft at 1:30PM Apr 13, 2021Observed: 8.46 ft at 1:45PM Apr 13, 2021Observed: 8.48 ft at 2:00PM Apr 13, 2021Observed: 8.47 ft at 2:15PM Apr 13, 2021Observed: 8.48 ft at 2:30PM Apr 13, 2021Observed: 8.46 ft at 2:45PM Apr 13, 2021Observed: 8.46 ft at 3:00PM Apr 13, 2021Observed: 8.5 ft at 3:15PM Apr 13, 2021Observed: 8.49 ft at 3:30PM Apr 13, 2021Observed: 8.46 ft at 3:45PM Apr 13, 2021Highest Observation: 8.52 ft at 4:00PM Apr 13, 2021Observed: 8.49 ft at 4:15PM Apr 13, 2021Observed: 8.49 ft at 4:30PM Apr 13, 2021Observed: 8.45 ft at 4:45PM Apr 13, 2021Observed: 8.45 ft at 5:00PM Apr 13, 2021Observed: 8.46 ft at 5:15PM Apr 13, 2021Observed: 8.47 ft at 5:30PM Apr 13, 2021Observed: 8.48 ft at 5:45PM Apr 13, 2021Observed: 8.46 ft at 6:00PM Apr 13, 2021Observed: 8.47 ft at 6:15PM Apr 13, 2021Observed: 8.44 ft at 6:30PM Apr 13, 2021Observed: 8.43 ft at 6:45PM Apr 13, 2021Observed: 8.44 ft at 7:00PM Apr 13, 2021Observed: 8.43 ft at 7:15PM Apr 13, 2021Observed: 8.43 ft at 7:30PM Apr 13, 2021Observed: 8.43 ft at 7:45PM Apr 13, 2021Observed: 8.42 ft at 8:00PM Apr 13, 2021Observed: 8.43 ft at 8:15PM Apr 13, 2021Observed: 8.44 ft at 8:30PM Apr 13, 2021Observed: 8.43 ft at 8:45PM Apr 13, 2021Observed: 8.45 ft at 9:00PM Apr 13, 2021Observed: 8.45 ft at 9:15PM Apr 13, 2021Observed: 8.44 ft at 9:30PM Apr 13, 2021Observed: 8.45 ft at 9:45PM Apr 13, 2021Observed: 8.45 ft at 10:00PM Apr 13, 2021Observed: 8.46 ft at 10:15PM Apr 13, 2021Observed: 8.46 ft at 10:30PM Apr 13, 2021Observed: 8.46 ft at 10:45PM Apr 13, 2021Observed: 8.46 ft at 11:00PM Apr 13, 2021Observed: 8.46 ft at 11:15PM Apr 13, 2021USGS--Water Resources of the United StatesBYRI2(plotting HGIRG) Graph Created (11:55PM Apr 13, 2021)ObservedLatest observed value: 8.46 ft at 11:15 PM CDT 13-Apr-2021. Flood Stage is 13 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: Not Available
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 Rock River at Byron are issued as needed during times of high water, but are not routinely available.

Return to Area Map
Upstream Locations Upstream Gauge Downstream Gauge Downstream Gauge - at Dixon
Flood Categories (in feet)
Major Flood Stage: 16
Moderate Flood Stage: 14
Flood Stage: 13
Action Stage: 10.5
Low Stage (in feet): -9999

Historic Crests
(1) 17.80 ft on 04/20/1973
(2) 17.08 ft on 04/20/2013
(3) 16.64 ft on 03/16/2019
(4) 16.50 ft on 07/25/2010
(5) 16.12 ft on 06/14/2000
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 13.11 ft on 05/18/2020
(2) 13.06 ft on 03/29/2020
(3) 14.42 ft on 10/04/2019
(4) 13.53 ft on 09/15/2019
(5) 13.00 ft on 05/31/2019
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:15
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
17 Water threatens structures at the water treatment plant in Byron.
16.5 Numerous residences are threatened between IL-2 and the river just northeast of Byron. River Road is threatened near the river just south of Byron.
16 The MercyHealth Clinic is threatened along Kysor Drive in Byron.
15.5 Water threatens lower sections of the water treatment plant property in Byron. Water threatens IL-2 west of Byron.
13.5 Numerous low-lying structures downstream of Byron are flooded.
13 Low-lying structures downstream of Byron are threatened.
12 Water inundates yards of several houses along River Road near Byron. Low-lying portions of Hamas Park and Sunshine Park are inundated.
10.5 Water begins to affect low-lying areas along the river near Byron.
About This Location Collapse

Latitude: 42.123056° N, Longitude: 89.255833° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 13 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 666.134 ft 679.134 ft  

Current/Historical Observations:

Additional Information Collapse
How much forecast precipitation was used for the current river forecast?
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
Chicago Weather Forecast Office
333 W. University Dr.
Romeoville, IL 60446
(815) 834-1435
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:29 PM
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities