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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

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Hydrograph River at a Glance Download
Shell Rock River (Northeast IA) at Shell Rock Stage (ft)Flow (cfs)Observed: 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, 2023Observed: 8.62 ft at 9:00AM May 30, 2023Observed: 8.62 ft at 9:15AM May 30, 2023Observed: 8.62 ft at 9:30AM May 30, 2023Observed: 8.62 ft at 9:45AM May 30, 2023Observed: 8.62 ft at 10:00AM May 30, 2023Observed: 8.62 ft at 10:15AM May 30, 2023Observed: 8.62 ft at 10:30AM May 30, 2023Observed: 8.62 ft at 10:45AM May 30, 2023Observed: 8.62 ft at 11:00AM May 30, 2023Observed: 8.62 ft at 11:15AM May 30, 2023Observed: 8.62 ft at 11:30AM May 30, 2023Observed: 8.62 ft at 11:45AM May 30, 2023Observed: 8.62 ft at 12:00PM May 30, 2023Observed: 8.62 ft at 12:15PM May 30, 2023Observed: 8.62 ft at 12:30PM May 30, 2023Observed: 8.62 ft at 12:45PM May 30, 2023Observed: 8.62 ft at 1:00PM May 30, 2023Observed: 8.62 ft at 1:15PM May 30, 2023Observed: 8.62 ft at 1:30PM May 30, 2023Observed: 8.62 ft at 1:45PM May 30, 2023Observed: 8.62 ft at 2:00PM May 30, 2023Observed: 8.62 ft at 2:15PM May 30, 2023Observed: 8.62 ft at 2:30PM May 30, 2023Observed: 8.62 ft at 2:45PM May 30, 2023Observed: 8.62 ft at 3:00PM May 30, 2023Observed: 8.62 ft at 3:15PM May 30, 2023Observed: 8.62 ft at 3:30PM May 30, 2023Observed: 8.62 ft at 3:45PM May 30, 2023Observed: 8.62 ft at 4:00PM May 30, 2023Observed: 8.62 ft at 4:15PM May 30, 2023Observed: 8.62 ft at 4:30PM May 30, 2023Observed: 8.62 ft at 4:45PM May 30, 2023Observed: 8.62 ft at 5:00PM May 30, 2023Observed: 8.62 ft at 5:15PM May 30, 2023Observed: 8.62 ft at 5:30PM May 30, 2023Observed: 8.62 ft at 5:45PM May 30, 2023Observed: 8.62 ft at 6:00PM May 30, 2023Observed: 8.62 ft at 6:15PM May 30, 2023Observed: 8.62 ft at 6:30PM May 30, 2023Observed: 8.62 ft at 6:45PM May 30, 2023Observed: 8.62 ft at 7:00PM May 30, 2023Observed: 8.62 ft at 7:15PM May 30, 2023Observed: 8.62 ft at 7:30PM May 30, 2023Observed: 8.62 ft at 7:45PM May 30, 2023Observed: 8.62 ft at 8:00PM May 30, 2023Observed: 8.62 ft at 8:15PM May 30, 2023Observed: 8.62 ft at 8:30PM May 30, 2023Observed: 8.62 ft at 8:45PM May 30, 2023Observed: 8.62 ft at 9:00PM May 30, 2023Observed: 8.62 ft at 9:15PM May 30, 2023Observed: 8.62 ft at 9:30PM May 30, 2023Observed: 8.62 ft at 9:45PM May 30, 2023Observed: 8.62 ft at 10:00PM May 30, 2023Observed: 8.62 ft at 10:15PM May 30, 2023Observed: 8.62 ft at 10:30PM May 30, 2023Observed: 8.62 ft at 10:45PM May 30, 2023Observed: 8.62 ft at 11:00PM May 30, 2023Observed: 8.62 ft at 11:15PM May 30, 2023Observed: 8.62 ft at 11:30PM May 30, 2023Observed: 8.62 ft at 11:45PM May 30, 2023Observed: 8.62 ft at 12:00AM May 31, 2023Observed: 8.62 ft at 12:15AM May 31, 2023Observed: 8.62 ft at 12:30AM May 31, 2023Observed: 8.62 ft at 12:45AM May 31, 2023Observed: 8.62 ft at 1:00AM May 31, 2023Observed: 8.62 ft at 1:15AM May 31, 2023Observed: 8.62 ft at 1:30AM May 31, 2023Observed: 8.62 ft at 1:45AM May 31, 2023Observed: 8.62 ft at 2:00AM May 31, 2023Observed: 8.62 ft at 2:15AM May 31, 2023Observed: 8.62 ft at 2:30AM May 31, 2023Observed: 8.62 ft at 2:45AM May 31, 2023Observed: 8.62 ft at 3:00AM May 31, 2023Observed: 8.61 ft at 3:15AM May 31, 2023Observed: 8.61 ft at 3:30AM May 31, 2023Observed: 8.61 ft at 3:45AM May 31, 2023Observed: 8.61 ft at 4:00AM May 31, 2023Observed: 8.61 ft at 4:15AM May 31, 2023Observed: 8.61 ft at 4:30AM May 31, 2023Observed: 8.61 ft at 4:45AM May 31, 2023Observed: 8.61 ft at 5:00AM May 31, 2023Observed: 8.61 ft at 5:15AM May 31, 2023Observed: 8.61 ft at 5:30AM May 31, 2023Observed: 8.61 ft at 5:45AM May 31, 2023Observed: 8.61 ft at 6:00AM May 31, 2023Observed: 8.61 ft at 6:15AM May 31, 2023Observed: 8.61 ft at 6:30AM May 31, 2023Observed: 8.61 ft at 6:45AM May 31, 2023Observed: 8.61 ft at 7:00AM May 31, 2023Observed: 8.61 ft at 7:15AM May 31, 2023Observed: 8.61 ft at 7:30AM May 31, 2023Observed: 8.61 ft at 7:45AM May 31, 2023Observed: 8.61 ft at 8:00AM May 31, 2023Observed: 8.61 ft at 8:15AM May 31, 2023Observed: 8.61 ft at 8:30AM May 31, 2023Observed: 8.61 ft at 8:45AM May 31, 2023Observed: 8.61 ft at 9:00AM May 31, 2023Observed: 8.61 ft at 9:15AM May 31, 2023Observed: 8.61 ft at 9:30AM May 31, 2023Observed: 8.61 ft at 9:45AM May 31, 2023Observed: 8.61 ft at 10:00AM May 31, 2023Observed: 8.61 ft at 10:15AM May 31, 2023Observed: 8.61 ft at 10:30AM May 31, 2023Observed: 8.61 ft at 10:45AM May 31, 2023Observed: 8.61 ft at 11:00AM May 31, 2023Observed: 8.61 ft at 11:15AM May 31, 2023Observed: 8.61 ft at 11:30AM May 31, 2023Observed: 8.61 ft at 11:45AM May 31, 2023Observed: 8.61 ft at 12:00PM May 31, 2023Observed: 8.61 ft at 12:15PM May 31, 2023Observed: 8.6 ft at 12:30PM May 31, 2023Observed: 8.6 ft at 12:45PM May 31, 2023Observed: 8.6 ft at 1:00PM May 31, 2023Observed: 8.6 ft at 1:15PM May 31, 2023Observed: 8.6 ft at 1:30PM May 31, 2023Observed: 8.6 ft at 1:45PM May 31, 2023Observed: 8.6 ft at 2:00PM May 31, 2023Observed: 8.6 ft at 2:15PM May 31, 2023Observed: 8.6 ft at 2:30PM May 31, 2023Observed: 8.6 ft at 2:45PM May 31, 2023Observed: 8.6 ft at 3:00PM May 31, 2023Observed: 8.6 ft at 3:15PM May 31, 2023Observed: 8.6 ft at 3:30PM May 31, 2023Observed: 8.6 ft at 3:45PM May 31, 2023Observed: 8.6 ft at 4:00PM May 31, 2023Observed: 8.6 ft at 4:15PM May 31, 2023Observed: 8.6 ft at 4:30PM May 31, 2023Observed: 8.6 ft at 4:45PM May 31, 2023Observed: 8.6 ft at 5:00PM May 31, 2023Observed: 8.59 ft at 5:15PM May 31, 2023Observed: 8.59 ft at 5:30PM May 31, 2023Observed: 8.59 ft at 5:45PM May 31, 2023Observed: 8.59 ft at 6:00PM May 31, 2023Observed: 8.59 ft at 6:15PM May 31, 2023Observed: 8.59 ft at 6:30PM May 31, 2023Observed: 8.59 ft at 6:45PM May 31, 2023Observed: 8.59 ft at 7:00PM May 31, 2023Observed: 8.59 ft at 7:15PM May 31, 2023Observed: 8.59 ft at 7:30PM May 31, 2023Observed: 8.59 ft at 7:45PM May 31, 2023Observed: 8.59 ft at 8:00PM May 31, 2023Observed: 8.59 ft at 8:15PM May 31, 2023Observed: 8.59 ft at 8:30PM May 31, 2023Observed: 8.59 ft at 8:45PM May 31, 2023Observed: 8.59 ft at 9:00PM May 31, 2023Observed: 8.59 ft at 9:15PM May 31, 2023Observed: 8.59 ft at 9:30PM May 31, 2023Observed: 8.59 ft at 9:45PM May 31, 2023Observed: 8.58 ft at 10:00PM May 31, 2023Observed: 8.58 ft at 10:15PM May 31, 2023Observed: 8.58 ft at 10:30PM May 31, 2023Observed: 8.58 ft at 10:45PM May 31, 2023Observed: 8.58 ft at 11:00PM May 31, 2023Observed: 8.58 ft at 11:15PM May 31, 2023Observed: 8.58 ft at 11:30PM May 31, 2023Observed: 8.58 ft at 11:45PM May 31, 2023Observed: 8.58 ft at 12:00AM Jun 01, 2023Observed: 8.58 ft at 12:15AM Jun 01, 2023Observed: 8.58 ft at 12:30AM Jun 01, 2023Observed: 8.58 ft at 12:45AM Jun 01, 2023Observed: 8.58 ft at 1:00AM Jun 01, 2023Observed: 8.58 ft at 1:15AM Jun 01, 2023Observed: 8.58 ft at 1:30AM Jun 01, 2023Observed: 8.58 ft at 1:45AM Jun 01, 2023Observed: 8.58 ft at 2:00AM Jun 01, 2023Observed: 8.58 ft at 2:15AM Jun 01, 2023Observed: 8.59 ft at 2:30AM Jun 01, 2023Observed: 8.59 ft at 2:45AM Jun 01, 2023Observed: 8.6 ft at 3:00AM Jun 01, 2023Observed: 8.61 ft at 3:15AM Jun 01, 2023Observed: 8.62 ft at 3:30AM Jun 01, 2023Observed: 8.63 ft at 3:45AM Jun 01, 2023Observed: 8.64 ft at 4:00AM Jun 01, 2023Observed: 8.65 ft at 4:15AM Jun 01, 2023Observed: 8.66 ft at 4:30AM Jun 01, 2023Observed: 8.68 ft at 4:45AM Jun 01, 2023Observed: 8.69 ft at 5:00AM Jun 01, 2023Observed: 8.71 ft at 5:15AM Jun 01, 2023Observed: 8.73 ft at 5:30AM Jun 01, 2023Observed: 8.74 ft at 5:45AM Jun 01, 2023Observed: 8.76 ft at 6:00AM Jun 01, 2023Observed: 8.78 ft at 6:15AM Jun 01, 2023Observed: 8.8 ft at 6:30AM Jun 01, 2023Observed: 8.81 ft at 6:45AM Jun 01, 2023Observed: 8.83 ft at 7:00AM Jun 01, 2023Observed: 8.85 ft at 7:15AM Jun 01, 2023Observed: 8.86 ft at 7:30AM Jun 01, 2023Observed: 8.87 ft at 7:45AM Jun 01, 2023Observed: 8.88 ft at 8:00AM Jun 01, 2023Observed: 8.89 ft at 8:15AM Jun 01, 2023Observed: 8.91 ft at 8:30AM Jun 01, 2023Observed: 8.92 ft at 8:45AM Jun 01, 2023Observed: 8.93 ft at 9:00AM Jun 01, 2023Observed: 8.93 ft at 9:15AM Jun 01, 2023Observed: 8.94 ft at 9:30AM Jun 01, 2023Observed: 8.95 ft at 9:45AM Jun 01, 2023Observed: 8.95 ft at 10:00AM Jun 01, 2023Observed: 8.96 ft at 10:15AM Jun 01, 2023Observed: 8.96 ft at 10:30AM Jun 01, 2023Highest Observation: 8.97 ft at 10:45AM Jun 01, 2023Highest Observation: 8.97 ft at 11:00AM Jun 01, 2023Highest Observation: 8.97 ft at 11:15AM Jun 01, 2023Highest Observation: 8.97 ft at 11:30AM Jun 01, 2023Highest Observation: 8.97 ft at 11:45AM Jun 01, 2023Highest Observation: 8.97 ft at 12:00PM Jun 01, 2023Highest Observation: 8.97 ft at 12:15PM Jun 01, 2023Highest Observation: 8.97 ft at 12:30PM Jun 01, 2023Highest Observation: 8.97 ft at 12:45PM Jun 01, 2023Highest Observation: 8.97 ft at 1:00PM Jun 01, 2023Highest Observation: 8.97 ft at 1:15PM Jun 01, 2023Highest Observation: 8.97 ft at 1:30PM Jun 01, 2023Highest Observation: 8.97 ft at 1:45PM Jun 01, 2023Highest Observation: 8.97 ft at 2:00PM Jun 01, 2023Highest Observation: 8.97 ft at 2:15PM Jun 01, 2023Highest Observation: 8.97 ft at 2:30PM Jun 01, 2023Highest Observation: 8.97 ft at 2:45PM Jun 01, 2023Highest Observation: 8.97 ft at 3:00PM Jun 01, 2023Observed: 8.96 ft at 3:15PM Jun 01, 2023Observed: 8.96 ft at 3:30PM Jun 01, 2023Observed: 8.95 ft at 3:45PM Jun 01, 2023Observed: 8.95 ft at 4:00PM Jun 01, 2023Observed: 8.95 ft at 4:15PM Jun 01, 2023Observed: 8.94 ft at 4:30PM Jun 01, 2023Observed: 8.93 ft at 4:45PM Jun 01, 2023Observed: 8.93 ft at 5:00PM Jun 01, 2023Observed: 8.93 ft at 5:15PM Jun 01, 2023Observed: 8.92 ft at 5:30PM Jun 01, 2023Observed: 8.92 ft at 5:45PM Jun 01, 2023Observed: 8.91 ft at 6:00PM Jun 01, 2023Observed: 8.91 ft at 6:15PM Jun 01, 2023Observed: 8.9 ft at 6:30PM Jun 01, 2023Observed: 8.89 ft at 6:45PM Jun 01, 2023Observed: 8.89 ft at 7:00PM Jun 01, 2023Observed: 8.88 ft at 7:15PM Jun 01, 2023Observed: 8.88 ft at 7:30PM Jun 01, 2023Observed: 8.88 ft at 7:45PM Jun 01, 2023Observed: 8.87 ft at 8:00PM Jun 01, 2023Observed: 8.87 ft at 8:15PM Jun 01, 2023Observed: 8.86 ft at 8:30PM Jun 01, 2023Observed: 8.86 ft at 8:45PM Jun 01, 2023Observed: 8.85 ft at 9:00PM Jun 01, 2023Observed: 8.85 ft at 9:15PM Jun 01, 2023Observed: 8.85 ft at 9:30PM Jun 01, 2023Observed: 8.84 ft at 9:45PM Jun 01, 2023Observed: 8.83 ft at 10:00PM Jun 01, 2023Observed: 8.83 ft at 10:15PM Jun 01, 2023Observed: 8.83 ft at 10:30PM Jun 01, 2023Observed: 8.82 ft at 10:45PM Jun 01, 2023Observed: 8.82 ft at 11:00PM Jun 01, 2023Observed: 8.82 ft at 11:15PM Jun 01, 2023Observed: 8.81 ft at 11:30PM Jun 01, 2023Observed: 8.81 ft at 11:45PM Jun 01, 2023Observed: 8.81 ft at 12:00AM Jun 02, 2023Observed: 8.81 ft at 12:15AM Jun 02, 2023Observed: 8.8 ft at 12:30AM Jun 02, 2023Observed: 8.8 ft at 12:45AM Jun 02, 2023Observed: 8.8 ft at 1:00AM Jun 02, 2023Observed: 8.79 ft at 1:15AM Jun 02, 2023Observed: 8.79 ft at 1:30AM Jun 02, 2023Observed: 8.79 ft at 1:45AM Jun 02, 2023Observed: 8.78 ft at 2:00AM Jun 02, 2023Observed: 8.78 ft at 2:15AM Jun 02, 2023Observed: 8.78 ft at 2:30AM Jun 02, 2023Observed: 8.78 ft at 2:45AM Jun 02, 2023Observed: 8.77 ft at 3:00AM Jun 02, 2023Observed: 8.77 ft at 3:15AM Jun 02, 2023Observed: 8.77 ft at 3:30AM Jun 02, 2023Observed: 8.77 ft at 3:45AM Jun 02, 2023Observed: 8.76 ft at 4:00AM Jun 02, 2023Observed: 8.76 ft at 4:15AM Jun 02, 2023Observed: 8.76 ft at 4:30AM Jun 02, 2023Observed: 8.76 ft at 4:45AM Jun 02, 2023Observed: 8.76 ft at 5:00AM Jun 02, 2023Observed: 8.76 ft at 5:15AM Jun 02, 2023Observed: 8.75 ft at 5:30AM Jun 02, 2023Observed: 8.75 ft at 5:45AM Jun 02, 2023Observed: 8.75 ft at 6:00AM Jun 02, 2023Observed: 8.75 ft at 6:15AM Jun 02, 2023Observed: 8.75 ft at 6:30AM Jun 02, 2023Observed: 8.75 ft at 6:45AM Jun 02, 2023Observed: 8.75 ft at 7:00AM Jun 02, 2023Observed: 8.75 ft at 7:15AM Jun 02, 2023Observed: 8.75 ft at 7:30AM Jun 02, 2023Observed: 8.74 ft at 7:45AM Jun 02, 2023Observed: 8.74 ft at 8:00AM Jun 02, 2023Observed: 8.74 ft at 8:15AM Jun 02, 2023Observed: 8.74 ft at 8:30AM Jun 02, 2023Observed: 8.74 ft at 8:45AM Jun 02, 2023Observed: 8.74 ft at 9:00AM Jun 02, 2023Observed: 8.73 ft at 9:15AM Jun 02, 2023Observed: 8.73 ft at 9:30AM Jun 02, 2023Observed: 8.73 ft at 9:45AM Jun 02, 2023Observed: 8.73 ft at 10:00AM Jun 02, 2023Observed: 8.73 ft at 10:15AM Jun 02, 2023Observed: 8.73 ft at 10:30AM Jun 02, 2023Observed: 8.73 ft at 10:45AM Jun 02, 2023Observed: 8.73 ft at 11:00AM Jun 02, 2023Observed: 8.73 ft at 11:15AM Jun 02, 2023Observed: 8.73 ft at 11:30AM Jun 02, 2023Observed: 8.72 ft at 11:45AM Jun 02, 2023Observed: 8.72 ft at 12:00PM Jun 02, 2023Observed: 8.72 ft at 12:15PM Jun 02, 2023Observed: 8.72 ft at 12:30PM Jun 02, 2023Observed: 8.72 ft at 12:45PM Jun 02, 2023Observed: 8.72 ft at 1:00PM Jun 02, 2023Observed: 8.72 ft at 1:15PM Jun 02, 2023Observed: 8.72 ft at 1:30PM Jun 02, 2023Observed: 8.72 ft at 1:45PM Jun 02, 2023Observed: 8.72 ft at 2:00PM Jun 02, 2023Observed: 8.71 ft at 2:15PM Jun 02, 2023Observed: 8.71 ft at 2:30PM Jun 02, 2023Observed: 8.71 ft at 2:45PM Jun 02, 2023Observed: 8.71 ft at 3:00PM Jun 02, 2023Observed: 8.71 ft at 3:15PM Jun 02, 2023Observed: 8.71 ft at 3:30PM Jun 02, 2023Observed: 8.71 ft at 3:45PM Jun 02, 2023Observed: 8.71 ft at 4:00PM Jun 02, 2023Observed: 8.71 ft at 4:15PM Jun 02, 2023Observed: 8.71 ft at 4:30PM Jun 02, 2023Observed: 8.71 ft at 4:45PM Jun 02, 2023Observed: 8.71 ft at 5:00PM Jun 02, 2023Observed: 8.71 ft at 5:15PM Jun 02, 2023Observed: 8.71 ft at 5:30PM Jun 02, 2023Observed: 8.71 ft at 5:45PM Jun 02, 2023Observed: 8.71 ft at 6:00PM Jun 02, 2023Observed: 8.71 ft at 6:15PM Jun 02, 2023Observed: 8.71 ft at 6:30PM Jun 02, 2023Observed: 8.71 ft at 6:45PM Jun 02, 2023Observed: 8.7 ft at 7:00PM Jun 02, 2023Observed: 8.7 ft at 7:15PM Jun 02, 2023Observed: 8.7 ft at 7:30PM Jun 02, 2023Observed: 8.7 ft at 7:45PM Jun 02, 2023Observed: 8.7 ft at 8:00PM Jun 02, 2023Observed: 8.7 ft at 8:15PM Jun 02, 2023Observed: 8.7 ft at 8:30PM Jun 02, 2023Observed: 8.7 ft at 8:45PM Jun 02, 2023Observed: 8.7 ft at 9:00PM Jun 02, 2023Observed: 8.7 ft at 9:15PM Jun 02, 2023Observed: 8.7 ft at 9:30PM Jun 02, 2023Observed: 8.7 ft at 9:45PM Jun 02, 2023Observed: 8.7 ft at 10:00PM Jun 02, 2023Observed: 8.7 ft at 10:15PM Jun 02, 2023Observed: 8.7 ft at 10:30PM Jun 02, 2023Observed: 8.69 ft at 10:45PM Jun 02, 2023Observed: 8.69 ft at 11:00PM Jun 02, 2023Observed: 8.69 ft at 11:15PM Jun 02, 2023Observed: 8.69 ft at 11:30PM Jun 02, 2023Observed: 8.69 ft at 11:45PM Jun 02, 2023Observed: 8.69 ft at 12:00AM Jun 03, 2023Observed: 8.69 ft at 12:15AM Jun 03, 2023Observed: 8.69 ft at 12:30AM Jun 03, 2023Observed: 8.69 ft at 12:45AM Jun 03, 2023Observed: 8.69 ft at 1:00AM Jun 03, 2023Observed: 8.69 ft at 1:15AM Jun 03, 2023Observed: 8.68 ft at 1:30AM Jun 03, 2023Observed: 8.68 ft at 1:45AM Jun 03, 2023Observed: 8.68 ft at 2:00AM Jun 03, 2023Observed: 8.68 ft at 2:15AM Jun 03, 2023Observed: 8.68 ft at 2:30AM Jun 03, 2023Observed: 8.68 ft at 2:45AM Jun 03, 2023Observed: 8.68 ft at 3:00AM Jun 03, 2023Observed: 8.68 ft at 3:15AM Jun 03, 2023Observed: 8.68 ft at 3:30AM Jun 03, 2023Observed: 8.68 ft at 3:45AM Jun 03, 2023Observed: 8.68 ft at 4:00AM Jun 03, 2023Observed: 8.68 ft at 4:15AM Jun 03, 2023Observed: 8.67 ft at 4:30AM Jun 03, 2023Observed: 8.67 ft at 4:45AM Jun 03, 2023Observed: 8.67 ft at 5:00AM Jun 03, 2023Observed: 8.67 ft at 5:15AM Jun 03, 2023Observed: 8.67 ft at 5:30AM Jun 03, 2023Observed: 8.67 ft at 5:45AM Jun 03, 2023Observed: 8.67 ft at 6:00AM Jun 03, 2023Observed: 8.67 ft at 6:15AM Jun 03, 2023Observed: 8.67 ft at 6:30AM Jun 03, 2023Observed: 8.67 ft at 6:45AM Jun 03, 2023Observed: 8.67 ft at 7:00AM Jun 03, 2023Observed: 8.67 ft at 7:15AM Jun 03, 2023Observed: 8.67 ft at 7:30AM Jun 03, 2023Observed: 8.67 ft at 7:45AM Jun 03, 2023Observed: 8.67 ft at 8:00AM Jun 03, 2023Observed: 8.67 ft at 8:15AM Jun 03, 2023Observed: 8.67 ft at 8:30AM Jun 03, 2023Observed: 8.67 ft at 8:45AM Jun 03, 2023Observed: 8.66 ft at 9:00AM Jun 03, 2023Observed: 8.66 ft at 9:15AM Jun 03, 2023Observed: 8.66 ft at 9:30AM Jun 03, 2023Observed: 8.66 ft at 9:45AM Jun 03, 2023Observed: 8.66 ft at 10:00AM Jun 03, 2023Observed: 8.66 ft at 10:15AM Jun 03, 2023Observed: 8.66 ft at 10:30AM Jun 03, 2023Observed: 8.66 ft at 10:45AM Jun 03, 2023Observed: 8.66 ft at 11:00AM Jun 03, 2023Observed: 8.66 ft at 11:15AM Jun 03, 2023Observed: 8.66 ft at 11:30AM Jun 03, 2023Observed: 8.66 ft at 11:45AM Jun 03, 2023Observed: 8.66 ft at 12:00PM Jun 03, 2023Observed: 8.66 ft at 12:15PM Jun 03, 2023Observed: 8.66 ft at 12:30PM Jun 03, 2023Observed: 8.66 ft at 12:45PM Jun 03, 2023Observed: 8.66 ft at 1:00PM Jun 03, 2023Observed: 8.65 ft at 1:15PM Jun 03, 2023Observed: 8.65 ft at 1:30PM Jun 03, 2023Observed: 8.65 ft at 1:45PM Jun 03, 2023Observed: 8.65 ft at 2:00PM Jun 03, 2023Observed: 8.65 ft at 2:15PM Jun 03, 2023Observed: 8.65 ft at 2:30PM Jun 03, 2023Observed: 8.65 ft at 2:45PM Jun 03, 2023Observed: 8.65 ft at 3:00PM Jun 03, 2023Observed: 8.65 ft at 3:15PM Jun 03, 2023Observed: 8.65 ft at 3:30PM Jun 03, 2023Observed: 8.65 ft at 3:45PM Jun 03, 2023Observed: 8.65 ft at 4:00PM Jun 03, 2023Observed: 8.65 ft at 4:15PM Jun 03, 2023Observed: 8.65 ft at 4:30PM Jun 03, 2023Observed: 8.65 ft at 4:45PM Jun 03, 2023Observed: 8.65 ft at 5:00PM Jun 03, 2023Observed: 8.65 ft at 5:15PM Jun 03, 2023Observed: 8.65 ft at 5:30PM Jun 03, 2023Observed: 8.64 ft at 5:45PM Jun 03, 2023Observed: 8.64 ft at 6:00PM Jun 03, 2023Observed: 8.64 ft at 6:15PM Jun 03, 2023Observed: 8.64 ft at 6:30PM Jun 03, 2023Observed: 8.64 ft at 6:45PM Jun 03, 2023Observed: 8.64 ft at 7:00PM Jun 03, 2023Observed: 8.64 ft at 7:15PM Jun 03, 2023Observed: 8.64 ft at 7:30PM Jun 03, 2023Observed: 8.64 ft at 7:45PM Jun 03, 2023Observed: 8.64 ft at 8:00PM Jun 03, 2023Observed: 8.64 ft at 8:15PM Jun 03, 2023Observed: 8.63 ft at 8:30PM Jun 03, 2023Observed: 8.63 ft at 8:45PM Jun 03, 2023Observed: 8.63 ft at 9:00PM Jun 03, 2023Observed: 8.63 ft at 9:15PM Jun 03, 2023Observed: 8.63 ft at 9:30PM Jun 03, 2023Observed: 8.63 ft at 9:45PM Jun 03, 2023Observed: 8.63 ft at 10:00PM Jun 03, 2023Observed: 8.63 ft at 10:15PM Jun 03, 2023Observed: 8.63 ft at 10:30PM Jun 03, 2023Observed: 8.63 ft at 10:45PM Jun 03, 2023Observed: 8.63 ft at 11:00PM Jun 03, 2023Observed: 8.63 ft at 11:15PM Jun 03, 2023Observed: 8.62 ft at 11:30PM Jun 03, 2023Observed: 8.62 ft at 11:45PM Jun 03, 2023Observed: 8.62 ft at 12:00AM Jun 04, 2023Observed: 8.62 ft at 12:15AM Jun 04, 2023Observed: 8.62 ft at 12:30AM Jun 04, 2023Observed: 8.62 ft at 12:45AM Jun 04, 2023Observed: 8.62 ft at 1:00AM Jun 04, 2023Observed: 8.62 ft at 1:15AM Jun 04, 2023Observed: 8.62 ft at 1:30AM Jun 04, 2023Observed: 8.62 ft at 1:45AM Jun 04, 2023Observed: 8.62 ft at 2:00AM Jun 04, 2023Observed: 8.62 ft at 2:15AM Jun 04, 2023Observed: 8.62 ft at 2:30AM Jun 04, 2023Observed: 8.62 ft at 2:45AM Jun 04, 2023USGS--Water Resources of the United StatesSHRI4(plotting HGIRV) Graph Created (3:18AM Jun 4, 2023)ObservedLatest observed value: 8.62 ft at 2:45 AM CDT 4-Jun-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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