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Hydrograph River at a Glance Download
Shell Rock River (Northeast IA) at Shell Rock Stage (ft)Flow (cfs)Highest Observation: 9.06 ft at 9:30AM May 25, 2023Highest Observation: 9.06 ft at 9:45AM May 25, 2023Highest Observation: 9.06 ft at 10:00AM May 25, 2023Highest Observation: 9.06 ft at 10:15AM May 25, 2023Highest Observation: 9.06 ft at 10:30AM May 25, 2023Observed: 9.05 ft at 10:45AM May 25, 2023Observed: 9.05 ft at 11:00AM May 25, 2023Observed: 9.05 ft at 11:15AM May 25, 2023Observed: 9.05 ft at 11:30AM May 25, 2023Observed: 9.05 ft at 11:45AM May 25, 2023Observed: 9.05 ft at 12:00PM May 25, 2023Observed: 9.05 ft at 12:15PM May 25, 2023Observed: 9.05 ft at 12:30PM May 25, 2023Observed: 9.05 ft at 12:45PM May 25, 2023Observed: 9.05 ft at 1:00PM May 25, 2023Observed: 9.05 ft at 1:15PM May 25, 2023Observed: 9.05 ft at 1:30PM May 25, 2023Observed: 9.05 ft at 1:45PM May 25, 2023Observed: 9.04 ft at 2:00PM May 25, 2023Observed: 9.04 ft at 2:15PM May 25, 2023Observed: 9.04 ft at 2:30PM May 25, 2023Observed: 9.04 ft at 2:45PM May 25, 2023Observed: 9.04 ft at 3:00PM May 25, 2023Observed: 9.04 ft at 3:15PM May 25, 2023Observed: 9.04 ft at 3:30PM May 25, 2023Observed: 9.03 ft at 3:45PM May 25, 2023Observed: 9.03 ft at 4:00PM May 25, 2023Observed: 9.03 ft at 4:15PM May 25, 2023Observed: 9.03 ft at 4:30PM May 25, 2023Observed: 9.03 ft at 4:45PM May 25, 2023Observed: 9.03 ft at 5:00PM May 25, 2023Observed: 9.03 ft at 5:15PM May 25, 2023Observed: 9.03 ft at 5:30PM May 25, 2023Observed: 9.03 ft at 5:45PM May 25, 2023Observed: 9.03 ft at 6:00PM May 25, 2023Observed: 9.03 ft at 6:15PM May 25, 2023Observed: 9.02 ft at 6:30PM May 25, 2023Observed: 9.02 ft at 6:45PM May 25, 2023Observed: 9.02 ft at 7:00PM May 25, 2023Observed: 9.02 ft at 7:15PM May 25, 2023Observed: 9.02 ft at 7:30PM May 25, 2023Observed: 9.02 ft at 7:45PM May 25, 2023Observed: 9.02 ft at 8:00PM May 25, 2023Observed: 9.02 ft at 8:15PM May 25, 2023Observed: 9.02 ft at 8:30PM May 25, 2023Observed: 9.01 ft at 8:45PM May 25, 2023Observed: 9.01 ft at 9:00PM May 25, 2023Observed: 9.01 ft at 9:15PM May 25, 2023Observed: 9.01 ft at 9:30PM May 25, 2023Observed: 9.01 ft at 9:45PM May 25, 2023Observed: 9.01 ft at 10:00PM May 25, 2023Observed: 9.01 ft at 10:15PM May 25, 2023Observed: 9.01 ft at 10:30PM May 25, 2023Observed: 9 ft at 10:45PM May 25, 2023Observed: 9 ft at 11:00PM May 25, 2023Observed: 9 ft at 11:15PM May 25, 2023Observed: 9 ft at 11:30PM May 25, 2023Observed: 9 ft at 11:45PM May 25, 2023Observed: 9 ft at 12:00AM May 26, 2023Observed: 8.99 ft at 12:15AM May 26, 2023Observed: 8.99 ft at 12:30AM May 26, 2023Observed: 8.99 ft at 12:45AM May 26, 2023Observed: 8.99 ft at 1:00AM May 26, 2023Observed: 8.99 ft at 1:15AM May 26, 2023Observed: 8.99 ft at 1:30AM May 26, 2023Observed: 8.99 ft at 1:45AM May 26, 2023Observed: 8.98 ft at 2:00AM May 26, 2023Observed: 8.98 ft at 2:15AM May 26, 2023Observed: 8.98 ft at 2:30AM May 26, 2023Observed: 8.98 ft at 2:45AM May 26, 2023Observed: 8.98 ft at 3:00AM May 26, 2023Observed: 8.98 ft at 3:15AM May 26, 2023Observed: 8.98 ft at 3:30AM May 26, 2023Observed: 8.98 ft at 3:45AM May 26, 2023Observed: 8.97 ft at 4:00AM May 26, 2023Observed: 8.97 ft at 4:15AM May 26, 2023Observed: 8.97 ft at 4:30AM May 26, 2023Observed: 8.97 ft at 4:45AM May 26, 2023Observed: 8.97 ft at 5:00AM May 26, 2023Observed: 8.97 ft at 5:15AM May 26, 2023Observed: 8.97 ft at 5:30AM May 26, 2023Observed: 8.97 ft at 5:45AM May 26, 2023Observed: 8.97 ft at 6:00AM May 26, 2023Observed: 8.97 ft at 6:15AM May 26, 2023Observed: 8.96 ft at 6:30AM May 26, 2023Observed: 8.96 ft at 6:45AM May 26, 2023Observed: 8.96 ft at 7:00AM May 26, 2023Observed: 8.96 ft at 7:15AM May 26, 2023Observed: 8.96 ft at 7:30AM May 26, 2023Observed: 8.96 ft at 7:45AM May 26, 2023Observed: 8.96 ft at 8:00AM May 26, 2023Observed: 8.96 ft at 8:15AM May 26, 2023Observed: 8.96 ft at 8:30AM May 26, 2023Observed: 8.95 ft at 8:45AM May 26, 2023Observed: 8.95 ft at 9:00AM May 26, 2023Observed: 8.95 ft at 9:15AM May 26, 2023Observed: 8.95 ft at 9:30AM May 26, 2023Observed: 8.95 ft at 9:45AM May 26, 2023Observed: 8.95 ft at 10:00AM May 26, 2023Observed: 8.95 ft at 10:15AM May 26, 2023Observed: 8.95 ft at 10:30AM May 26, 2023Observed: 8.95 ft at 10:45AM May 26, 2023Observed: 8.95 ft at 11:00AM May 26, 2023Observed: 8.95 ft at 11:15AM May 26, 2023Observed: 8.95 ft at 11:30AM May 26, 2023Observed: 8.95 ft at 11:45AM May 26, 2023Observed: 8.95 ft at 12:00PM May 26, 2023Observed: 8.94 ft at 12:15PM May 26, 2023Observed: 8.94 ft at 12:30PM May 26, 2023Observed: 8.94 ft at 12:45PM May 26, 2023Observed: 8.94 ft at 1:00PM May 26, 2023Observed: 8.94 ft at 1:15PM May 26, 2023Observed: 8.94 ft at 1:30PM May 26, 2023Observed: 8.94 ft at 1:45PM May 26, 2023Observed: 8.94 ft at 2:00PM May 26, 2023Observed: 8.94 ft at 2:15PM May 26, 2023Observed: 8.93 ft at 2:30PM May 26, 2023Observed: 8.93 ft at 2:45PM May 26, 2023Observed: 8.93 ft at 3:00PM May 26, 2023Observed: 8.93 ft at 3:15PM May 26, 2023Observed: 8.93 ft at 3:30PM May 26, 2023Observed: 8.93 ft at 3:45PM May 26, 2023Observed: 8.93 ft at 4:00PM May 26, 2023Observed: 8.93 ft at 4:15PM May 26, 2023Observed: 8.93 ft at 4:30PM May 26, 2023Observed: 8.93 ft at 4:45PM May 26, 2023Observed: 8.92 ft at 5:00PM May 26, 2023Observed: 8.92 ft at 5:15PM May 26, 2023Observed: 8.92 ft at 5:30PM May 26, 2023Observed: 8.92 ft at 5:45PM May 26, 2023Observed: 8.92 ft at 6:00PM May 26, 2023Observed: 8.91 ft at 6:15PM May 26, 2023Observed: 8.91 ft at 6:30PM May 26, 2023Observed: 8.91 ft at 6:45PM May 26, 2023Observed: 8.91 ft at 7:00PM May 26, 2023Observed: 8.91 ft at 7:15PM May 26, 2023Observed: 8.91 ft at 7:30PM May 26, 2023Observed: 8.91 ft at 7:45PM May 26, 2023Observed: 8.91 ft at 8:00PM May 26, 2023Observed: 8.91 ft at 8:15PM May 26, 2023Observed: 8.91 ft at 8:30PM May 26, 2023Observed: 8.91 ft at 8:45PM May 26, 2023Observed: 8.91 ft at 9:00PM May 26, 2023Observed: 8.9 ft at 9:15PM May 26, 2023Observed: 8.9 ft at 9:30PM May 26, 2023Observed: 8.9 ft at 9:45PM May 26, 2023Observed: 8.9 ft at 10:00PM May 26, 2023Observed: 8.9 ft at 10:15PM May 26, 2023Observed: 8.9 ft at 10:30PM May 26, 2023Observed: 8.9 ft at 10:45PM May 26, 2023Observed: 8.9 ft at 11:00PM May 26, 2023Observed: 8.9 ft at 11:15PM May 26, 2023Observed: 8.9 ft at 11:30PM May 26, 2023Observed: 8.89 ft at 11:45PM May 26, 2023Observed: 8.89 ft at 12:00AM May 27, 2023Observed: 8.89 ft at 12:15AM May 27, 2023Observed: 8.89 ft at 12:30AM May 27, 2023Observed: 8.89 ft at 12:45AM May 27, 2023Observed: 8.89 ft at 1:00AM May 27, 2023Observed: 8.89 ft at 1:15AM May 27, 2023Observed: 8.89 ft at 1:30AM May 27, 2023Observed: 8.89 ft at 1:45AM May 27, 2023Observed: 8.88 ft at 2:00AM May 27, 2023Observed: 8.88 ft at 2:15AM May 27, 2023Observed: 8.88 ft at 2:30AM May 27, 2023Observed: 8.88 ft at 2:45AM May 27, 2023Observed: 8.88 ft at 3:00AM May 27, 2023Observed: 8.88 ft at 3:15AM May 27, 2023Observed: 8.88 ft at 3:30AM May 27, 2023Observed: 8.88 ft at 3:45AM May 27, 2023Observed: 8.88 ft at 4:00AM May 27, 2023Observed: 8.88 ft at 4:15AM May 27, 2023Observed: 8.87 ft at 4:30AM May 27, 2023Observed: 8.87 ft at 4:45AM May 27, 2023Observed: 8.87 ft at 5:00AM May 27, 2023Observed: 8.87 ft at 5:15AM May 27, 2023Observed: 8.87 ft at 5:30AM May 27, 2023Observed: 8.87 ft at 5:45AM May 27, 2023Observed: 8.87 ft at 6:00AM May 27, 2023Observed: 8.87 ft at 6:15AM May 27, 2023Observed: 8.87 ft at 6:30AM May 27, 2023Observed: 8.87 ft at 6:45AM May 27, 2023Observed: 8.87 ft at 7:00AM May 27, 2023Observed: 8.87 ft at 7:15AM May 27, 2023Observed: 8.87 ft at 7:30AM May 27, 2023Observed: 8.87 ft at 7:45AM May 27, 2023Observed: 8.87 ft at 8:00AM May 27, 2023Observed: 8.86 ft at 8:15AM May 27, 2023Observed: 8.86 ft at 8:30AM May 27, 2023Observed: 8.86 ft at 8:45AM May 27, 2023Observed: 8.86 ft at 9:00AM May 27, 2023Observed: 8.86 ft at 9:15AM May 27, 2023Observed: 8.86 ft at 9:30AM May 27, 2023Observed: 8.86 ft at 9:45AM May 27, 2023Observed: 8.86 ft at 10:00AM May 27, 2023Observed: 8.86 ft at 10:15AM May 27, 2023Observed: 8.86 ft at 10:30AM May 27, 2023Observed: 8.86 ft at 10:45AM May 27, 2023Observed: 8.86 ft at 11:00AM May 27, 2023Observed: 8.86 ft at 11:15AM May 27, 2023Observed: 8.86 ft at 11:30AM May 27, 2023Observed: 8.85 ft at 11:45AM May 27, 2023Observed: 8.85 ft at 12:00PM May 27, 2023Observed: 8.85 ft at 12:15PM May 27, 2023Observed: 8.85 ft at 12:30PM May 27, 2023Observed: 8.85 ft at 12:45PM May 27, 2023Observed: 8.85 ft at 1:00PM May 27, 2023Observed: 8.85 ft at 1:15PM May 27, 2023Observed: 8.84 ft at 1:30PM May 27, 2023Observed: 8.84 ft at 1:45PM May 27, 2023Observed: 8.84 ft at 2:00PM May 27, 2023Observed: 8.84 ft at 2:15PM May 27, 2023Observed: 8.84 ft at 2:30PM May 27, 2023Observed: 8.84 ft at 2:45PM May 27, 2023Observed: 8.84 ft at 3:00PM May 27, 2023Observed: 8.84 ft at 3:15PM May 27, 2023Observed: 8.83 ft at 3:30PM May 27, 2023Observed: 8.83 ft at 3:45PM May 27, 2023Observed: 8.83 ft at 4:00PM May 27, 2023Observed: 8.83 ft at 4:15PM May 27, 2023Observed: 8.83 ft at 4:30PM May 27, 2023Observed: 8.83 ft at 4:45PM May 27, 2023Observed: 8.83 ft at 5:00PM May 27, 2023Observed: 8.83 ft at 5:15PM May 27, 2023Observed: 8.82 ft at 5:30PM May 27, 2023Observed: 8.82 ft at 5:45PM May 27, 2023Observed: 8.82 ft at 6:00PM May 27, 2023Observed: 8.82 ft at 6:15PM May 27, 2023Observed: 8.82 ft at 6:30PM May 27, 2023Observed: 8.82 ft at 6:45PM May 27, 2023Observed: 8.82 ft at 7:00PM May 27, 2023Observed: 8.82 ft at 7:15PM May 27, 2023Observed: 8.81 ft at 7:30PM May 27, 2023Observed: 8.81 ft at 7:45PM May 27, 2023Observed: 8.81 ft at 8:00PM May 27, 2023Observed: 8.81 ft at 8:15PM May 27, 2023Observed: 8.81 ft at 8:30PM May 27, 2023Observed: 8.81 ft at 8:45PM May 27, 2023Observed: 8.81 ft at 9:00PM May 27, 2023Observed: 8.81 ft at 9:15PM May 27, 2023Observed: 8.8 ft at 9:30PM May 27, 2023Observed: 8.8 ft at 9:45PM May 27, 2023Observed: 8.8 ft at 10:00PM May 27, 2023Observed: 8.8 ft at 10:15PM May 27, 2023Observed: 8.8 ft at 10:30PM May 27, 2023Observed: 8.8 ft at 10:45PM May 27, 2023Observed: 8.79 ft at 11:00PM May 27, 2023Observed: 8.79 ft at 11:15PM May 27, 2023Observed: 8.79 ft at 11:30PM May 27, 2023Observed: 8.79 ft at 11:45PM May 27, 2023Observed: 8.79 ft at 12:00AM May 28, 2023Observed: 8.79 ft at 12:15AM May 28, 2023Observed: 8.79 ft at 12:30AM May 28, 2023Observed: 8.79 ft at 12:45AM May 28, 2023Observed: 8.79 ft at 1:00AM May 28, 2023Observed: 8.79 ft at 1:15AM May 28, 2023Observed: 8.78 ft at 1:30AM May 28, 2023Observed: 8.78 ft at 1:45AM May 28, 2023Observed: 8.78 ft at 2:00AM May 28, 2023Observed: 8.78 ft at 2:15AM May 28, 2023Observed: 8.78 ft at 2:30AM May 28, 2023Observed: 8.78 ft at 2:45AM May 28, 2023Observed: 8.78 ft at 3:00AM May 28, 2023Observed: 8.78 ft at 3:15AM May 28, 2023Observed: 8.78 ft at 3:30AM May 28, 2023Observed: 8.78 ft at 3:45AM May 28, 2023Observed: 8.78 ft at 4:00AM May 28, 2023Observed: 8.78 ft at 4:15AM May 28, 2023Observed: 8.78 ft at 4:30AM May 28, 2023Observed: 8.78 ft at 4:45AM May 28, 2023Observed: 8.78 ft at 5:00AM May 28, 2023Observed: 8.78 ft at 5:15AM May 28, 2023Observed: 8.78 ft at 5:30AM May 28, 2023Observed: 8.78 ft at 5:45AM May 28, 2023Observed: 8.78 ft at 6:00AM May 28, 2023Observed: 8.78 ft at 6:15AM May 28, 2023Observed: 8.78 ft at 6:30AM May 28, 2023Observed: 8.78 ft at 6:45AM May 28, 2023Observed: 8.78 ft at 7:00AM May 28, 2023Observed: 8.78 ft at 7:15AM May 28, 2023Observed: 8.78 ft at 7:30AM May 28, 2023Observed: 8.78 ft at 7:45AM May 28, 2023Observed: 8.77 ft at 8:00AM May 28, 2023Observed: 8.77 ft at 8:15AM May 28, 2023Observed: 8.77 ft at 8:30AM May 28, 2023Observed: 8.77 ft at 8:45AM May 28, 2023Observed: 8.77 ft at 9:00AM May 28, 2023Observed: 8.77 ft at 9:15AM May 28, 2023Observed: 8.77 ft at 9:30AM May 28, 2023Observed: 8.77 ft at 9:45AM May 28, 2023Observed: 8.77 ft at 10:00AM May 28, 2023Observed: 8.77 ft at 10:15AM May 28, 2023Observed: 8.77 ft at 10:30AM May 28, 2023Observed: 8.77 ft at 10:45AM May 28, 2023Observed: 8.77 ft at 11:00AM May 28, 2023Observed: 8.77 ft at 11:15AM May 28, 2023Observed: 8.77 ft at 11:30AM May 28, 2023Observed: 8.77 ft at 11:45AM May 28, 2023Observed: 8.77 ft at 12:00PM May 28, 2023Observed: 8.77 ft at 12:15PM May 28, 2023Observed: 8.77 ft at 12:30PM May 28, 2023Observed: 8.76 ft at 12:45PM May 28, 2023Observed: 8.76 ft at 1:00PM May 28, 2023Observed: 8.76 ft at 1:15PM May 28, 2023Observed: 8.76 ft at 1:30PM May 28, 2023Observed: 8.76 ft at 1:45PM May 28, 2023Observed: 8.76 ft at 2:00PM May 28, 2023Observed: 8.76 ft at 2:15PM May 28, 2023Observed: 8.76 ft at 2:30PM May 28, 2023Observed: 8.76 ft at 2:45PM May 28, 2023Observed: 8.76 ft at 3:00PM May 28, 2023Observed: 8.76 ft at 3:15PM May 28, 2023Observed: 8.76 ft at 3:30PM May 28, 2023Observed: 8.76 ft at 3:45PM May 28, 2023Observed: 8.75 ft at 4:00PM May 28, 2023Observed: 8.75 ft at 4:15PM May 28, 2023Observed: 8.75 ft at 4:30PM May 28, 2023Observed: 8.75 ft at 4:45PM May 28, 2023Observed: 8.75 ft at 5:00PM May 28, 2023Observed: 8.75 ft at 5:15PM May 28, 2023Observed: 8.75 ft at 5:30PM May 28, 2023Observed: 8.75 ft at 5:45PM May 28, 2023Observed: 8.75 ft at 6:00PM May 28, 2023Observed: 8.75 ft at 6:15PM May 28, 2023Observed: 8.75 ft at 6:30PM May 28, 2023Observed: 8.75 ft at 6:45PM May 28, 2023Observed: 8.75 ft at 7:00PM May 28, 2023Observed: 8.75 ft at 7:15PM May 28, 2023Observed: 8.75 ft at 7:30PM May 28, 2023Observed: 8.75 ft at 7:45PM May 28, 2023Observed: 8.75 ft at 8:00PM May 28, 2023Observed: 8.75 ft at 8:15PM May 28, 2023Observed: 8.75 ft at 8:30PM May 28, 2023Observed: 8.75 ft at 8:45PM May 28, 2023Observed: 8.75 ft at 9:00PM May 28, 2023Observed: 8.75 ft at 9:15PM May 28, 2023Observed: 8.75 ft at 9:30PM May 28, 2023Observed: 8.75 ft at 9:45PM May 28, 2023Observed: 8.75 ft at 10:00PM May 28, 2023Observed: 8.74 ft at 10:15PM May 28, 2023Observed: 8.74 ft at 10:30PM May 28, 2023Observed: 8.74 ft at 10:45PM May 28, 2023Observed: 8.74 ft at 11:00PM May 28, 2023Observed: 8.74 ft at 11:15PM May 28, 2023Observed: 8.74 ft at 11:30PM May 28, 2023Observed: 8.74 ft at 11:45PM May 28, 2023Observed: 8.74 ft at 12:00AM May 29, 2023Observed: 8.74 ft at 12:15AM May 29, 2023Observed: 8.74 ft at 12:30AM May 29, 2023Observed: 8.74 ft at 12:45AM May 29, 2023Observed: 8.74 ft at 1:00AM May 29, 2023Observed: 8.74 ft at 1:15AM May 29, 2023Observed: 8.74 ft at 1:30AM May 29, 2023Observed: 8.73 ft at 1:45AM May 29, 2023Observed: 8.73 ft at 2:00AM May 29, 2023Observed: 8.73 ft at 2:15AM May 29, 2023Observed: 8.73 ft at 2:30AM May 29, 2023Observed: 8.73 ft at 2:45AM May 29, 2023Observed: 8.73 ft at 3:00AM May 29, 2023Observed: 8.73 ft at 3:15AM May 29, 2023Observed: 8.73 ft at 3:30AM May 29, 2023Observed: 8.73 ft at 3:45AM May 29, 2023Observed: 8.73 ft at 4:00AM May 29, 2023Observed: 8.73 ft at 4:15AM May 29, 2023Observed: 8.73 ft at 4:30AM May 29, 2023Observed: 8.73 ft at 4:45AM May 29, 2023Observed: 8.73 ft at 5:00AM May 29, 2023Observed: 8.73 ft at 5:15AM May 29, 2023Observed: 8.73 ft at 5:30AM May 29, 2023Observed: 8.73 ft at 5:45AM May 29, 2023Observed: 8.73 ft at 6:00AM May 29, 2023Observed: 8.73 ft at 6:15AM May 29, 2023Observed: 8.73 ft at 6:30AM May 29, 2023Observed: 8.73 ft at 6:45AM May 29, 2023Observed: 8.73 ft at 7:00AM May 29, 2023Observed: 8.73 ft at 7:15AM May 29, 2023Observed: 8.73 ft at 7:30AM May 29, 2023Observed: 8.72 ft at 7:45AM May 29, 2023Observed: 8.72 ft at 8:00AM May 29, 2023Observed: 8.72 ft at 8:15AM May 29, 2023Observed: 8.72 ft at 8:30AM May 29, 2023Observed: 8.72 ft at 8:45AM May 29, 2023Observed: 8.72 ft at 9:00AM May 29, 2023Observed: 8.72 ft at 9:15AM May 29, 2023Observed: 8.72 ft at 9:30AM May 29, 2023Observed: 8.72 ft at 9:45AM May 29, 2023Observed: 8.72 ft at 10:00AM May 29, 2023Observed: 8.72 ft at 10:15AM May 29, 2023Observed: 8.72 ft at 10:30AM May 29, 2023Observed: 8.72 ft at 10:45AM May 29, 2023Observed: 8.72 ft at 11:00AM May 29, 2023Observed: 8.72 ft at 11:15AM May 29, 2023Observed: 8.72 ft at 11:30AM May 29, 2023Observed: 8.72 ft at 11:45AM May 29, 2023Observed: 8.72 ft at 12:00PM May 29, 2023Observed: 8.71 ft at 12:15PM May 29, 2023Observed: 8.71 ft at 12:30PM May 29, 2023Observed: 8.71 ft at 12:45PM May 29, 2023Observed: 8.71 ft at 1:00PM May 29, 2023Observed: 8.71 ft at 1:15PM May 29, 2023Observed: 8.71 ft at 1:30PM May 29, 2023Observed: 8.71 ft at 1:45PM May 29, 2023Observed: 8.71 ft at 2:00PM May 29, 2023Observed: 8.71 ft at 2:15PM May 29, 2023Observed: 8.71 ft at 2:30PM May 29, 2023Observed: 8.7 ft at 2:45PM May 29, 2023Observed: 8.7 ft at 3:00PM May 29, 2023Observed: 8.7 ft at 3:15PM May 29, 2023Observed: 8.7 ft at 3:30PM May 29, 2023Observed: 8.7 ft at 3:45PM May 29, 2023Observed: 8.7 ft at 4:00PM May 29, 2023Observed: 8.7 ft at 4:15PM May 29, 2023Observed: 8.7 ft at 4:30PM May 29, 2023Observed: 8.7 ft at 4:45PM May 29, 2023Observed: 8.7 ft at 5:00PM May 29, 2023Observed: 8.69 ft at 5:15PM May 29, 2023Observed: 8.69 ft at 5:30PM May 29, 2023Observed: 8.69 ft at 5:45PM May 29, 2023Observed: 8.69 ft at 6:00PM May 29, 2023Observed: 8.69 ft at 6:15PM May 29, 2023Observed: 8.69 ft at 6:30PM May 29, 2023Observed: 8.69 ft at 6:45PM May 29, 2023Observed: 8.69 ft at 7:00PM May 29, 2023Observed: 8.69 ft at 7:15PM May 29, 2023Observed: 8.69 ft at 7:30PM May 29, 2023Observed: 8.69 ft at 7:45PM May 29, 2023Observed: 8.68 ft at 8:00PM May 29, 2023Observed: 8.68 ft at 8:15PM May 29, 2023Observed: 8.68 ft at 8:30PM May 29, 2023Observed: 8.68 ft at 8:45PM May 29, 2023Observed: 8.68 ft at 9:00PM May 29, 2023Observed: 8.68 ft at 9:15PM May 29, 2023Observed: 8.68 ft at 9:30PM May 29, 2023Observed: 8.68 ft at 9:45PM May 29, 2023Observed: 8.68 ft at 10:00PM May 29, 2023Observed: 8.68 ft at 10:15PM May 29, 2023Observed: 8.68 ft at 10:30PM May 29, 2023Observed: 8.67 ft at 10:45PM May 29, 2023Observed: 8.67 ft at 11:00PM May 29, 2023Observed: 8.67 ft at 11:15PM May 29, 2023Observed: 8.67 ft at 11:30PM May 29, 2023Observed: 8.67 ft at 11:45PM May 29, 2023Observed: 8.67 ft at 12:00AM May 30, 2023Observed: 8.67 ft at 12:15AM May 30, 2023Observed: 8.67 ft at 12:30AM May 30, 2023Observed: 8.67 ft at 12:45AM May 30, 2023Observed: 8.66 ft at 1:00AM May 30, 2023Observed: 8.66 ft at 1:15AM May 30, 2023Observed: 8.66 ft at 1:30AM May 30, 2023Observed: 8.66 ft at 1:45AM May 30, 2023Observed: 8.65 ft at 2:00AM May 30, 2023Observed: 8.65 ft at 2:15AM May 30, 2023Observed: 8.65 ft at 2:30AM May 30, 2023Observed: 8.65 ft at 2:45AM May 30, 2023Observed: 8.65 ft at 3:00AM May 30, 2023Observed: 8.65 ft at 3:15AM May 30, 2023Observed: 8.64 ft at 3:30AM May 30, 2023Observed: 8.64 ft at 3:45AM May 30, 2023Observed: 8.63 ft at 4:00AM May 30, 2023Observed: 8.63 ft at 4:15AM May 30, 2023Observed: 8.63 ft at 4:30AM May 30, 2023Observed: 8.63 ft at 4:45AM May 30, 2023Observed: 8.63 ft at 5:00AM May 30, 2023Observed: 8.63 ft at 5:15AM May 30, 2023Observed: 8.62 ft at 5:30AM May 30, 2023Observed: 8.62 ft at 5:45AM May 30, 2023Observed: 8.62 ft at 6:00AM May 30, 2023Observed: 8.62 ft at 6:15AM May 30, 2023Observed: 8.62 ft at 6:30AM May 30, 2023Observed: 8.62 ft at 6:45AM May 30, 2023Observed: 8.62 ft at 7:00AM May 30, 2023Observed: 8.62 ft at 7:15AM May 30, 2023Observed: 8.62 ft at 7:30AM May 30, 2023Observed: 8.62 ft at 7:45AM May 30, 2023Observed: 8.62 ft at 8:00AM May 30, 2023Observed: 8.62 ft at 8:15AM May 30, 2023Observed: 8.62 ft at 8:30AM May 30, 2023Observed: 8.62 ft at 8:45AM May 30, 2023USGS--Water Resources of the United StatesSHRI4(plotting HGIRV) Graph Created (9:18AM May 30, 2023)ObservedLatest observed value: 8.62 ft at 8:45 AM CDT 30-May-2023. Flood Stage is 12 ft
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About this graph
Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts for the Shell Rock River (Northeast IA) at Shell Rock are issued as needed during times of high water, but are not routinely available.

More information on datums is available at www.ngs.noaa.gov/faq.shtml

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Upstream Gauge - at IFC--Marble Rock 290th St Upstream Gauge Downstream Gauge Downstream Gauge - at Cedar Falls
Flood Categories (in feet)
Major Flood Stage: 20
Moderate Flood Stage: 18
Flood Stage: 12
Action Stage: 10
Low Stage (in feet): -9999

Historic Crests
(1) 21.40 ft on 09/23/2016
(2) 20.36 ft on 06/10/2008
(3) 17.70 ft on 01/01/1856
(4) 16.73 ft on 07/22/1999
(5) 16.26 ft on 03/28/1961
(6) 15.87 ft on 05/23/2004
(7) 15.49 ft on 06/30/1969
(8) 15.45 ft on 06/11/2018
(9) 15.21 ft on 04/01/1993
(10) 15.09 ft on 04/07/1965
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 11.26 ft on 06/16/2022
(2) 11.08 ft on 08/29/2021
(3) 12.63 ft on 06/23/2020
(4) 14.48 ft on 03/16/2019
(5) 15.45 ft on 06/11/2018
(6) 12.01 ft on 10/01/2016
(7) 21.40 ft on 09/23/2016
(8) 11.15 ft on 06/24/2015
(9) 13.82 ft on 06/21/2014
(10) 14.95 ft on 06/14/2013
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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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
21 The approach to the Cherry Street bridge floods.
20 Many residences flood.
18 Water nears the top of an arch beneath the Cherry Street bridge.
14 Flooding occurs in Shell Rock primarily in residential yards.
13.5 East Washington street is closed.
13 Part of South Lake Street is closed.
12.5 Seepage occurs in several basements close to the river.
12 Water affects South Prairie Street.
About This Location Collapse

Latitude: 42.711925° N, Longitude: 92.582967° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 12 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 29 885.34 ft Not Available 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
  • USGS 7-Day Streamflow Duration Hydrograph for this location:
    Duration Hydrograph

    Duration Hydrograph Legend


  • USGS Cumulative Streamflow Hydrograph for this location:
    Duration Hydrograph of Cumulative Streamflow
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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
Des Moines Weather Forecast Office
9607 NW Beaver Dr.
Des Moines, IA 50131
(515) 270-2614
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