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Hydrograph River at a Glance Download
St. Marys River at Decatur Stage (ft)Flow (kcfs)Observed: 5.19 ft at 9:45AM May 07, 2021Observed: 5.19 ft at 10:00AM May 07, 2021Observed: 5.18 ft at 10:15AM May 07, 2021Observed: 5.18 ft at 10:30AM May 07, 2021Observed: 5.18 ft at 10:45AM May 07, 2021Observed: 5.18 ft at 11:00AM May 07, 2021Observed: 5.16 ft at 11:15AM May 07, 2021Observed: 5.16 ft at 11:30AM May 07, 2021Observed: 5.17 ft at 11:45AM May 07, 2021Observed: 5.16 ft at 12:00PM May 07, 2021Observed: 5.15 ft at 12:15PM May 07, 2021Observed: 5.15 ft at 12:30PM May 07, 2021Observed: 5.15 ft at 12:45PM May 07, 2021Observed: 5.14 ft at 1:00PM May 07, 2021Observed: 5.14 ft at 1:15PM May 07, 2021Observed: 5.13 ft at 1:30PM May 07, 2021Observed: 5.13 ft at 1:45PM May 07, 2021Observed: 5.12 ft at 2:00PM May 07, 2021Observed: 5.13 ft at 2:15PM May 07, 2021Observed: 5.12 ft at 2:30PM May 07, 2021Observed: 5.12 ft at 2:45PM May 07, 2021Observed: 5.12 ft at 3:00PM May 07, 2021Observed: 5.11 ft at 3:15PM May 07, 2021Observed: 5.12 ft at 3:30PM May 07, 2021Observed: 5.11 ft at 3:45PM May 07, 2021Observed: 5.11 ft at 4:00PM May 07, 2021Observed: 5.11 ft at 4:15PM May 07, 2021Observed: 5.09 ft at 4:30PM May 07, 2021Observed: 5.09 ft at 4:45PM May 07, 2021Observed: 5.09 ft at 5:00PM May 07, 2021Observed: 5.1 ft at 5:15PM May 07, 2021Observed: 5.09 ft at 5:30PM May 07, 2021Observed: 5.08 ft at 5:45PM May 07, 2021Observed: 5.09 ft at 6:00PM May 07, 2021Observed: 5.08 ft at 6:15PM May 07, 2021Observed: 5.09 ft at 6:30PM May 07, 2021Observed: 5.07 ft at 6:45PM May 07, 2021Observed: 5.07 ft at 7:00PM May 07, 2021Observed: 5.08 ft at 7:15PM May 07, 2021Observed: 5.07 ft at 7:30PM May 07, 2021Observed: 5.08 ft at 7:45PM May 07, 2021Observed: 5.06 ft at 8:00PM May 07, 2021Observed: 5.06 ft at 8:15PM May 07, 2021Observed: 5.06 ft at 8:30PM May 07, 2021Observed: 5.07 ft at 8:45PM May 07, 2021Observed: 5.05 ft at 9:00PM May 07, 2021Observed: 5.04 ft at 9:15PM May 07, 2021Observed: 5.05 ft at 9:30PM May 07, 2021Observed: 5.03 ft at 9:45PM May 07, 2021Observed: 5.04 ft at 10:00PM May 07, 2021Observed: 5.04 ft at 10:15PM May 07, 2021Observed: 5.04 ft at 10:30PM May 07, 2021Observed: 5.02 ft at 10:45PM May 07, 2021Observed: 5.03 ft at 11:00PM May 07, 2021Observed: 5.02 ft at 11:15PM May 07, 2021Observed: 5.02 ft at 11:30PM May 07, 2021Observed: 5.02 ft at 11:45PM May 07, 2021Observed: 5.01 ft at 12:00AM May 08, 2021Observed: 5.01 ft at 12:15AM May 08, 2021Observed: 5.01 ft at 12:30AM May 08, 2021Observed: 5 ft at 12:45AM May 08, 2021Observed: 5 ft at 1:00AM May 08, 2021Observed: 4.99 ft at 1:15AM May 08, 2021Observed: 4.98 ft at 1:30AM May 08, 2021Observed: 4.98 ft at 1:45AM May 08, 2021Observed: 4.98 ft at 2:00AM May 08, 2021Observed: 4.97 ft at 2:15AM May 08, 2021Observed: 4.96 ft at 2:30AM May 08, 2021Observed: 4.96 ft at 2:45AM May 08, 2021Observed: 4.95 ft at 3:00AM May 08, 2021Observed: 4.94 ft at 3:15AM May 08, 2021Observed: 4.95 ft at 3:30AM May 08, 2021Observed: 4.94 ft at 3:45AM May 08, 2021Observed: 4.94 ft at 4:00AM May 08, 2021Observed: 4.93 ft at 4:15AM May 08, 2021Observed: 4.93 ft at 4:30AM May 08, 2021Observed: 4.91 ft at 4:45AM May 08, 2021Observed: 4.92 ft at 5:00AM May 08, 2021Observed: 4.91 ft at 5:15AM May 08, 2021Observed: 4.9 ft at 5:30AM May 08, 2021Observed: 4.91 ft at 5:45AM May 08, 2021Observed: 4.89 ft at 6:00AM May 08, 2021Observed: 4.89 ft at 6:15AM May 08, 2021Observed: 4.89 ft at 6:30AM May 08, 2021Observed: 4.88 ft at 6:45AM May 08, 2021Observed: 4.88 ft at 7:00AM May 08, 2021Observed: 4.87 ft at 7:15AM May 08, 2021Observed: 4.86 ft at 7:30AM May 08, 2021Observed: 4.85 ft at 7:45AM May 08, 2021Observed: 4.85 ft at 8:00AM May 08, 2021Observed: 4.84 ft at 8:15AM May 08, 2021Observed: 4.85 ft at 8:30AM May 08, 2021Observed: 4.84 ft at 8:45AM May 08, 2021Observed: 4.83 ft at 9:00AM May 08, 2021Observed: 4.83 ft at 9:15AM May 08, 2021Observed: 4.83 ft at 9:30AM May 08, 2021Observed: 4.82 ft at 9:45AM May 08, 2021Observed: 4.81 ft at 10:00AM May 08, 2021Observed: 4.8 ft at 10:15AM May 08, 2021Observed: 4.8 ft at 10:30AM May 08, 2021Observed: 4.81 ft at 10:45AM May 08, 2021Observed: 4.81 ft at 11:00AM May 08, 2021Observed: 4.79 ft at 11:15AM May 08, 2021Observed: 4.78 ft at 11:30AM May 08, 2021Observed: 4.78 ft at 11:45AM May 08, 2021Observed: 4.77 ft at 12:00PM May 08, 2021Observed: 4.78 ft at 12:15PM May 08, 2021Observed: 4.76 ft at 12:30PM May 08, 2021Observed: 4.76 ft at 12:45PM May 08, 2021Observed: 4.76 ft at 1:00PM May 08, 2021Observed: 4.75 ft at 1:15PM May 08, 2021Observed: 4.74 ft at 1:30PM May 08, 2021Observed: 4.74 ft at 1:45PM May 08, 2021Observed: 4.74 ft at 2:00PM May 08, 2021Observed: 4.73 ft at 2:15PM May 08, 2021Observed: 4.72 ft at 2:30PM May 08, 2021Observed: 4.72 ft at 2:45PM May 08, 2021Observed: 4.72 ft at 3:00PM May 08, 2021Observed: 4.72 ft at 3:15PM May 08, 2021Observed: 4.71 ft at 3:30PM May 08, 2021Observed: 4.7 ft at 3:45PM May 08, 2021Observed: 4.7 ft at 4:00PM May 08, 2021Observed: 4.69 ft at 4:15PM May 08, 2021Observed: 4.7 ft at 4:30PM May 08, 2021Observed: 4.69 ft at 4:45PM May 08, 2021Observed: 4.68 ft at 5:00PM May 08, 2021Observed: 4.68 ft at 5:15PM May 08, 2021Observed: 4.68 ft at 5:30PM May 08, 2021Observed: 4.67 ft at 5:45PM May 08, 2021Observed: 4.67 ft at 6:00PM May 08, 2021Observed: 4.67 ft at 6:15PM May 08, 2021Observed: 4.67 ft at 6:30PM May 08, 2021Observed: 4.66 ft at 6:45PM May 08, 2021Observed: 4.66 ft at 7:00PM May 08, 2021Observed: 4.65 ft at 7:15PM May 08, 2021Observed: 4.64 ft at 7:30PM May 08, 2021Observed: 4.64 ft at 7:45PM May 08, 2021Observed: 4.64 ft at 8:00PM May 08, 2021Observed: 4.64 ft at 8:15PM May 08, 2021Observed: 4.64 ft at 8:30PM May 08, 2021Observed: 4.64 ft at 8:45PM May 08, 2021Observed: 4.63 ft at 9:00PM May 08, 2021Observed: 4.62 ft at 9:15PM May 08, 2021Observed: 4.62 ft at 9:30PM May 08, 2021Observed: 4.62 ft at 9:45PM May 08, 2021Observed: 4.62 ft at 10:00PM May 08, 2021Observed: 4.61 ft at 10:15PM May 08, 2021Observed: 4.61 ft at 10:30PM May 08, 2021Observed: 4.59 ft at 10:45PM May 08, 2021Observed: 4.59 ft at 11:00PM May 08, 2021Observed: 4.59 ft at 11:15PM May 08, 2021Observed: 4.59 ft at 11:30PM May 08, 2021Observed: 4.58 ft at 11:45PM May 08, 2021Observed: 4.58 ft at 12:00AM May 09, 2021Observed: 4.58 ft at 12:15AM May 09, 2021Observed: 4.58 ft at 12:30AM May 09, 2021Observed: 4.58 ft at 12:45AM May 09, 2021Observed: 4.57 ft at 1:00AM May 09, 2021Observed: 4.57 ft at 1:15AM May 09, 2021Observed: 4.58 ft at 1:30AM May 09, 2021Observed: 4.57 ft at 1:45AM May 09, 2021Observed: 4.57 ft at 2:00AM May 09, 2021Observed: 4.58 ft at 2:15AM May 09, 2021Observed: 4.58 ft at 2:30AM May 09, 2021Observed: 4.58 ft at 2:45AM May 09, 2021Observed: 4.59 ft at 3:00AM May 09, 2021Observed: 4.58 ft at 3:15AM May 09, 2021Observed: 4.58 ft at 3:30AM May 09, 2021Observed: 4.58 ft at 3:45AM May 09, 2021Observed: 4.59 ft at 4:00AM May 09, 2021Observed: 4.6 ft at 4:15AM May 09, 2021Observed: 4.61 ft at 4:30AM May 09, 2021Observed: 4.61 ft at 4:45AM May 09, 2021Observed: 4.63 ft at 5:00AM May 09, 2021Observed: 4.64 ft at 5:15AM May 09, 2021Observed: 4.66 ft at 5:30AM May 09, 2021Observed: 4.7 ft at 5:45AM May 09, 2021Observed: 4.72 ft at 6:00AM May 09, 2021Observed: 4.76 ft at 6:15AM May 09, 2021Observed: 4.81 ft at 6:30AM May 09, 2021Observed: 4.86 ft at 6:45AM May 09, 2021Observed: 4.92 ft at 7:00AM May 09, 2021Observed: 4.98 ft at 7:15AM May 09, 2021Observed: 5.07 ft at 7:30AM May 09, 2021Observed: 5.17 ft at 7:45AM May 09, 2021Observed: 5.31 ft at 8:00AM May 09, 2021Observed: 5.46 ft at 8:15AM May 09, 2021Observed: 5.64 ft at 8:30AM May 09, 2021Observed: 5.85 ft at 8:45AM May 09, 2021Observed: 6.08 ft at 9:00AM May 09, 2021Observed: 6.34 ft at 9:15AM May 09, 2021Observed: 6.62 ft at 9:30AM May 09, 2021Observed: 6.93 ft at 9:45AM May 09, 2021Observed: 7.28 ft at 10:00AM May 09, 2021Observed: 7.66 ft at 10:15AM May 09, 2021Observed: 8.1 ft at 10:30AM May 09, 2021Observed: 8.58 ft at 10:45AM May 09, 2021Observed: 9.06 ft at 11:00AM May 09, 2021Observed: 9.52 ft at 11:15AM May 09, 2021Observed: 9.95 ft at 11:30AM May 09, 2021Observed: 10.38 ft at 11:45AM May 09, 2021Observed: 10.81 ft at 12:00PM May 09, 2021Observed: 11.14 ft at 12:15PM May 09, 2021Observed: 11.53 ft at 12:30PM May 09, 2021Observed: 11.91 ft at 12:45PM May 09, 2021Observed: 12.27 ft at 1:00PM May 09, 2021Observed: 12.62 ft at 1:15PM May 09, 2021Observed: 12.97 ft at 1:30PM May 09, 2021Observed: 13.27 ft at 1:45PM May 09, 2021Observed: 13.55 ft at 2:00PM May 09, 2021Observed: 13.82 ft at 2:15PM May 09, 2021Observed: 14.08 ft at 2:30PM May 09, 2021Observed: 14.32 ft at 2:45PM May 09, 2021Observed: 14.53 ft at 3:00PM May 09, 2021Observed: 14.74 ft at 3:15PM May 09, 2021Observed: 14.94 ft at 3:30PM May 09, 2021Observed: 15.1 ft at 3:45PM May 09, 2021Observed: 15.28 ft at 4:00PM May 09, 2021Observed: 15.42 ft at 4:15PM May 09, 2021Observed: 15.56 ft at 4:30PM May 09, 2021Observed: 15.71 ft at 4:45PM May 09, 2021Observed: 15.85 ft at 5:00PM May 09, 2021Observed: 15.96 ft at 5:15PM May 09, 2021Observed: 16.08 ft at 5:30PM May 09, 2021Observed: 16.18 ft at 5:45PM May 09, 2021Observed: 16.29 ft at 6:00PM May 09, 2021Observed: 16.39 ft at 6:15PM May 09, 2021Observed: 16.48 ft at 6:30PM May 09, 2021Observed: 16.56 ft at 6:45PM May 09, 2021Observed: 16.65 ft at 7:00PM May 09, 2021Observed: 16.72 ft at 7:15PM May 09, 2021Observed: 16.81 ft at 7:30PM May 09, 2021Observed: 16.86 ft at 7:45PM May 09, 2021Observed: 16.94 ft at 8:00PM May 09, 2021Observed: 16.98 ft at 8:15PM May 09, 2021Observed: 17.05 ft at 8:30PM May 09, 2021Observed: 17.09 ft at 8:45PM May 09, 2021Observed: 17.16 ft at 9:00PM May 09, 2021Observed: 17.2 ft at 9:15PM May 09, 2021Observed: 17.25 ft at 9:30PM May 09, 2021Observed: 17.3 ft at 9:45PM May 09, 2021Observed: 17.34 ft at 10:00PM May 09, 2021Observed: 17.36 ft at 10:15PM May 09, 2021Observed: 17.43 ft at 10:30PM May 09, 2021Observed: 17.44 ft at 10:45PM May 09, 2021Observed: 17.48 ft at 11:00PM May 09, 2021Observed: 17.53 ft at 11:15PM May 09, 2021Observed: 17.55 ft at 11:30PM May 09, 2021Observed: 17.6 ft at 11:45PM May 09, 2021Observed: 17.6 ft at 12:00AM May 10, 2021Observed: 17.64 ft at 12:15AM May 10, 2021Observed: 17.67 ft at 12:30AM May 10, 2021Observed: 17.71 ft at 12:45AM May 10, 2021Observed: 17.74 ft at 1:00AM May 10, 2021Observed: 17.78 ft at 1:15AM May 10, 2021Observed: 17.79 ft at 1:30AM May 10, 2021Observed: 17.82 ft at 1:45AM May 10, 2021Observed: 17.86 ft at 2:00AM May 10, 2021Observed: 17.88 ft at 2:15AM May 10, 2021Observed: 17.9 ft at 2:30AM May 10, 2021Observed: 17.93 ft at 2:45AM May 10, 2021Observed: 17.97 ft at 3:00AM May 10, 2021Observed: 17.98 ft at 3:15AM May 10, 2021Observed: 18.01 ft at 3:30AM May 10, 2021Observed: 18.03 ft at 3:45AM May 10, 2021Observed: 18.06 ft at 4:00AM May 10, 2021Observed: 18.09 ft at 4:15AM May 10, 2021Observed: 18.12 ft at 4:30AM May 10, 2021Observed: 18.15 ft at 4:45AM May 10, 2021Observed: 18.17 ft at 5:00AM May 10, 2021Observed: 18.19 ft at 5:15AM May 10, 2021Observed: 18.22 ft at 5:30AM May 10, 2021Observed: 18.23 ft at 5:45AM May 10, 2021Observed: 18.26 ft at 6:00AM May 10, 2021Observed: 18.27 ft at 6:15AM May 10, 2021Observed: 18.3 ft at 6:30AM May 10, 2021Observed: 18.32 ft at 6:45AM May 10, 2021Observed: 18.35 ft at 7:00AM May 10, 2021Observed: 18.37 ft at 7:15AM May 10, 2021Observed: 18.4 ft at 7:30AM May 10, 2021Observed: 18.42 ft at 7:45AM May 10, 2021Observed: 18.43 ft at 8:00AM May 10, 2021Observed: 18.46 ft at 8:15AM May 10, 2021Observed: 18.47 ft at 8:30AM May 10, 2021Observed: 18.5 ft at 8:45AM May 10, 2021Observed: 18.5 ft at 9:00AM May 10, 2021Observed: 18.53 ft at 9:15AM May 10, 2021Observed: 18.57 ft at 9:30AM May 10, 2021Observed: 18.56 ft at 9:45AM May 10, 2021Observed: 18.58 ft at 10:00AM May 10, 2021Observed: 18.57 ft at 10:15AM May 10, 2021Observed: 18.6 ft at 10:30AM May 10, 2021Observed: 18.63 ft at 10:45AM May 10, 2021Observed: 18.63 ft at 11:00AM May 10, 2021Observed: 18.65 ft at 11:15AM May 10, 2021Observed: 18.65 ft at 11:30AM May 10, 2021Observed: 18.66 ft at 11:45AM May 10, 2021Observed: 18.69 ft at 12:00PM May 10, 2021Observed: 18.68 ft at 12:15PM May 10, 2021Observed: 18.68 ft at 12:30PM May 10, 2021Observed: 18.7 ft at 12:45PM May 10, 2021Observed: 18.69 ft at 1:00PM May 10, 2021Observed: 18.69 ft at 1:15PM May 10, 2021Observed: 18.71 ft at 1:30PM May 10, 2021Observed: 18.7 ft at 1:45PM May 10, 2021Observed: 18.72 ft at 2:00PM May 10, 2021Observed: 18.72 ft at 2:15PM May 10, 2021Observed: 18.74 ft at 2:30PM May 10, 2021Observed: 18.73 ft at 2:45PM May 10, 2021Observed: 18.74 ft at 3:00PM May 10, 2021Observed: 18.75 ft at 3:15PM May 10, 2021Observed: 18.75 ft at 3:30PM May 10, 2021Observed: 18.75 ft at 3:45PM May 10, 2021Observed: 18.75 ft at 4:00PM May 10, 2021Observed: 18.77 ft at 4:15PM May 10, 2021Observed: 18.76 ft at 4:30PM May 10, 2021Observed: 18.76 ft at 4:45PM May 10, 2021Observed: 18.75 ft at 5:00PM May 10, 2021Observed: 18.78 ft at 5:15PM May 10, 2021Observed: 18.78 ft at 5:30PM May 10, 2021Observed: 18.78 ft at 5:45PM May 10, 2021Observed: 18.78 ft at 6:00PM May 10, 2021Observed: 18.79 ft at 6:15PM May 10, 2021Observed: 18.79 ft at 6:30PM May 10, 2021Observed: 18.81 ft at 6:45PM May 10, 2021Observed: 18.79 ft at 7:00PM May 10, 2021Observed: 18.78 ft at 7:15PM May 10, 2021Observed: 18.8 ft at 7:30PM May 10, 2021Observed: 18.8 ft at 7:45PM May 10, 2021Observed: 18.81 ft at 8:00PM May 10, 2021Observed: 18.82 ft at 8:15PM May 10, 2021Observed: 18.81 ft at 8:30PM May 10, 2021Observed: 18.82 ft at 8:45PM May 10, 2021Observed: 18.81 ft at 9:00PM May 10, 2021Observed: 18.83 ft at 9:15PM May 10, 2021Observed: 18.79 ft at 9:30PM May 10, 2021Observed: 18.82 ft at 9:45PM May 10, 2021Observed: 18.83 ft at 10:00PM May 10, 2021Observed: 18.81 ft at 10:15PM May 10, 2021Observed: 18.83 ft at 10:30PM May 10, 2021Observed: 18.83 ft at 10:45PM May 10, 2021Observed: 18.81 ft at 11:00PM May 10, 2021Observed: 18.82 ft at 11:15PM May 10, 2021Observed: 18.84 ft at 11:30PM May 10, 2021Observed: 18.79 ft at 11:45PM May 10, 2021Observed: 18.82 ft at 12:00AM May 11, 2021Observed: 18.82 ft at 12:15AM May 11, 2021Observed: 18.83 ft at 12:30AM May 11, 2021Observed: 18.83 ft at 12:45AM May 11, 2021Highest Observation: 18.85 ft at 1:00AM May 11, 2021Observed: 18.84 ft at 1:15AM May 11, 2021Observed: 18.84 ft at 1:30AM May 11, 2021Observed: 18.84 ft at 1:45AM May 11, 2021Highest Observation: 18.85 ft at 2:00AM May 11, 2021Observed: 18.82 ft at 2:15AM May 11, 2021Highest Observation: 18.85 ft at 2:30AM May 11, 2021Observed: 18.82 ft at 2:45AM May 11, 2021Observed: 18.84 ft at 3:00AM May 11, 2021Observed: 18.84 ft at 3:15AM May 11, 2021Observed: 18.84 ft at 3:30AM May 11, 2021Observed: 18.84 ft at 3:45AM May 11, 2021Observed: 18.82 ft at 4:00AM May 11, 2021Highest Observation: 18.85 ft at 4:15AM May 11, 2021Observed: 18.83 ft at 4:30AM May 11, 2021Observed: 18.83 ft at 4:45AM May 11, 2021Observed: 18.83 ft at 5:00AM May 11, 2021Observed: 18.82 ft at 5:15AM May 11, 2021Observed: 18.83 ft at 5:30AM May 11, 2021Observed: 18.83 ft at 5:45AM May 11, 2021Observed: 18.82 ft at 6:00AM May 11, 2021Observed: 18.84 ft at 6:15AM May 11, 2021Observed: 18.81 ft at 6:30AM May 11, 2021Observed: 18.79 ft at 6:45AM May 11, 2021Observed: 18.81 ft at 7:00AM May 11, 2021Observed: 18.8 ft at 7:15AM May 11, 2021Observed: 18.79 ft at 7:30AM May 11, 2021Observed: 18.81 ft at 7:45AM May 11, 2021Observed: 18.79 ft at 8:00AM May 11, 2021Observed: 18.8 ft at 8:15AM May 11, 2021Observed: 18.77 ft at 8:30AM May 11, 2021Observed: 18.78 ft at 8:45AM May 11, 2021Observed: 18.8 ft at 9:00AM May 11, 2021Observed: 18.77 ft at 9:15AM May 11, 2021Observed: 18.78 ft at 9:30AM May 11, 2021Observed: 18.73 ft at 9:45AM May 11, 2021Observed: 18.77 ft at 10:00AM May 11, 2021Observed: 18.76 ft at 10:15AM May 11, 2021Observed: 18.74 ft at 10:30AM May 11, 2021Observed: 18.74 ft at 10:45AM May 11, 2021Observed: 18.73 ft at 11:00AM May 11, 2021Observed: 18.73 ft at 11:15AM May 11, 2021Observed: 18.72 ft at 11:30AM May 11, 2021Observed: 18.71 ft at 11:45AM May 11, 2021Observed: 18.7 ft at 12:00PM May 11, 2021Observed: 18.69 ft at 12:15PM May 11, 2021Observed: 18.71 ft at 12:30PM May 11, 2021Observed: 18.7 ft at 12:45PM May 11, 2021Observed: 18.66 ft at 1:00PM May 11, 2021Observed: 18.68 ft at 1:15PM May 11, 2021Observed: 18.67 ft at 1:30PM May 11, 2021Observed: 18.65 ft at 1:45PM May 11, 2021Observed: 18.64 ft at 2:00PM May 11, 2021Observed: 18.64 ft at 2:15PM May 11, 2021Observed: 18.63 ft at 2:30PM May 11, 2021Observed: 18.64 ft at 2:45PM May 11, 2021Observed: 18.61 ft at 3:00PM May 11, 2021Observed: 18.59 ft at 3:15PM May 11, 2021Observed: 18.59 ft at 3:30PM May 11, 2021Observed: 18.59 ft at 3:45PM May 11, 2021Observed: 18.56 ft at 4:00PM May 11, 2021Observed: 18.58 ft at 4:15PM May 11, 2021Observed: 18.56 ft at 4:30PM May 11, 2021Observed: 18.56 ft at 4:45PM May 11, 2021Observed: 18.54 ft at 5:00PM May 11, 2021Observed: 18.53 ft at 5:15PM May 11, 2021Observed: 18.52 ft at 5:30PM May 11, 2021Observed: 18.52 ft at 5:45PM May 11, 2021Observed: 18.51 ft at 6:00PM May 11, 2021Observed: 18.5 ft at 6:15PM May 11, 2021Observed: 18.5 ft at 6:30PM May 11, 2021Observed: 18.48 ft at 6:45PM May 11, 2021Observed: 18.47 ft at 7:00PM May 11, 2021Observed: 18.46 ft at 7:15PM May 11, 2021Observed: 18.44 ft at 7:30PM May 11, 2021Observed: 18.45 ft at 7:45PM May 11, 2021Observed: 18.42 ft at 8:00PM May 11, 2021Observed: 18.44 ft at 8:15PM May 11, 2021Observed: 18.41 ft at 8:30PM May 11, 2021Observed: 18.4 ft at 8:45PM May 11, 2021Observed: 18.39 ft at 9:00PM May 11, 2021Observed: 18.4 ft at 9:15PM May 11, 2021Observed: 18.38 ft at 9:30PM May 11, 2021Observed: 18.35 ft at 9:45PM May 11, 2021Observed: 18.35 ft at 10:00PM May 11, 2021Observed: 18.34 ft at 10:15PM May 11, 2021Observed: 18.33 ft at 10:30PM May 11, 2021Observed: 18.32 ft at 10:45PM May 11, 2021Observed: 18.31 ft at 11:00PM May 11, 2021Observed: 18.33 ft at 11:15PM May 11, 2021Observed: 18.29 ft at 11:30PM May 11, 2021Observed: 18.28 ft at 11:45PM May 11, 2021Observed: 18.27 ft at 12:00AM May 12, 2021Observed: 18.27 ft at 12:15AM May 12, 2021Observed: 18.25 ft at 12:30AM May 12, 2021Observed: 18.24 ft at 12:45AM May 12, 2021Observed: 18.23 ft at 1:00AM May 12, 2021Observed: 18.24 ft at 1:15AM May 12, 2021Observed: 18.23 ft at 1:30AM May 12, 2021Observed: 18.23 ft at 1:45AM May 12, 2021Observed: 18.2 ft at 2:00AM May 12, 2021Observed: 18.2 ft at 2:15AM May 12, 2021Observed: 18.17 ft at 2:30AM May 12, 2021Observed: 18.18 ft at 2:45AM May 12, 2021Observed: 18.19 ft at 3:00AM May 12, 2021Observed: 18.16 ft at 3:15AM May 12, 2021Observed: 18.15 ft at 3:30AM May 12, 2021Observed: 18.16 ft at 3:45AM May 12, 2021Observed: 18.14 ft at 4:00AM May 12, 2021Observed: 18.14 ft at 4:15AM May 12, 2021Observed: 18.13 ft at 4:30AM May 12, 2021Observed: 18.11 ft at 4:45AM May 12, 2021Observed: 18.11 ft at 5:00AM May 12, 2021Observed: 18.1 ft at 5:15AM May 12, 2021Observed: 18.09 ft at 5:30AM May 12, 2021Observed: 18.08 ft at 5:45AM May 12, 2021Observed: 18.08 ft at 6:00AM May 12, 2021Observed: 18.07 ft at 6:15AM May 12, 2021Observed: 18.08 ft at 6:30AM May 12, 2021Observed: 18.05 ft at 6:45AM May 12, 2021Observed: 18.05 ft at 7:00AM May 12, 2021Observed: 18.04 ft at 7:15AM May 12, 2021Observed: 18.03 ft at 7:30AM May 12, 2021Observed: 18.01 ft at 7:45AM May 12, 2021Observed: 18.01 ft at 8:00AM May 12, 2021Observed: 18 ft at 8:15AM May 12, 2021Observed: 18.02 ft at 8:30AM May 12, 2021Observed: 17.98 ft at 8:45AM May 12, 2021Observed: 17.98 ft at 9:00AM May 12, 2021Observed: 17.97 ft at 9:15AM May 12, 2021Observed: 17.97 ft at 9:30AM May 12, 2021Observed: 17.96 ft at 9:45AM May 12, 2021Observed: 17.98 ft at 10:00AM May 12, 2021Observed: 17.95 ft at 10:15AM May 12, 2021Observed: 17.95 ft at 10:30AM May 12, 2021Observed: 17.94 ft at 10:45AM May 12, 2021Observed: 17.95 ft at 11:00AM May 12, 2021Observed: 17.92 ft at 11:15AM May 12, 2021Observed: 17.93 ft at 11:30AM May 12, 2021Observed: 17.92 ft at 11:45AM May 12, 2021Observed: 17.92 ft at 12:00PM May 12, 2021Observed: 17.92 ft at 12:15PM May 12, 2021Observed: 17.9 ft at 12:30PM May 12, 2021Observed: 17.91 ft at 12:45PM May 12, 2021Observed: 17.9 ft at 1:00PM May 12, 2021Observed: 17.89 ft at 1:15PM May 12, 2021Observed: 17.87 ft at 1:30PM May 12, 2021Observed: 17.87 ft at 1:45PM May 12, 2021Observed: 17.87 ft at 2:00PM May 12, 2021Observed: 17.85 ft at 2:15PM May 12, 2021Observed: 17.85 ft at 2:30PM May 12, 2021Observed: 17.85 ft at 2:45PM May 12, 2021Observed: 17.84 ft at 3:00PM May 12, 2021Observed: 17.85 ft at 3:15PM May 12, 2021Observed: 17.85 ft at 3:30PM May 12, 2021Observed: 17.85 ft at 3:45PM May 12, 2021Observed: 17.83 ft at 4:00PM May 12, 2021Observed: 17.84 ft at 4:15PM May 12, 2021Observed: 17.82 ft at 4:30PM May 12, 2021Observed: 17.81 ft at 4:45PM May 12, 2021Observed: 17.81 ft at 5:00PM May 12, 2021Observed: 17.81 ft at 5:15PM May 12, 2021Observed: 17.78 ft at 5:30PM May 12, 2021Observed: 17.79 ft at 5:45PM May 12, 2021Observed: 17.79 ft at 6:00PM May 12, 2021Observed: 17.77 ft at 6:15PM May 12, 2021Observed: 17.77 ft at 6:30PM May 12, 2021Observed: 17.78 ft at 6:45PM May 12, 2021Observed: 17.77 ft at 7:00PM May 12, 2021Observed: 17.76 ft at 7:15PM May 12, 2021Observed: 17.75 ft at 7:30PM May 12, 2021Observed: 17.76 ft at 7:45PM May 12, 2021Observed: 17.75 ft at 8:00PM May 12, 2021Observed: 17.74 ft at 8:15PM May 12, 2021Observed: 17.75 ft at 8:30PM May 12, 2021Observed: 17.73 ft at 8:45PM May 12, 2021Observed: 17.74 ft at 9:00PM May 12, 2021Observed: 17.73 ft at 9:15PM May 12, 2021Observed: 17.73 ft at 9:30PM May 12, 2021Observed: 17.71 ft at 9:45PM May 12, 2021Observed: 17.72 ft at 10:00PM May 12, 2021Observed: 17.71 ft at 10:15PM May 12, 2021Observed: 17.7 ft at 10:30PM May 12, 2021Observed: 17.7 ft at 10:45PM May 12, 2021Observed: 17.7 ft at 11:00PM May 12, 2021Observed: 17.69 ft at 11:15PM May 12, 2021Observed: 17.69 ft at 11:30PM May 12, 2021Observed: 17.67 ft at 11:45PM May 12, 2021Observed: 17.67 ft at 12:00AM May 13, 2021Observed: 17.68 ft at 12:15AM May 13, 2021Observed: 17.67 ft at 12:30AM May 13, 2021Observed: 17.66 ft at 12:45AM May 13, 2021Observed: 17.66 ft at 1:00AM May 13, 2021Observed: 17.68 ft at 1:15AM May 13, 2021Observed: 17.65 ft at 1:30AM May 13, 2021Observed: 17.66 ft at 1:45AM May 13, 2021Observed: 17.65 ft at 2:00AM May 13, 2021Observed: 17.64 ft at 2:15AM May 13, 2021Observed: 17.63 ft at 2:30AM May 13, 2021Observed: 17.61 ft at 2:45AM May 13, 2021Observed: 17.62 ft at 3:00AM May 13, 2021Observed: 17.62 ft at 3:15AM May 13, 2021Observed: 17.61 ft at 3:30AM May 13, 2021Observed: 17.61 ft at 3:45AM May 13, 2021Observed: 17.61 ft at 4:00AM May 13, 2021Observed: 17.61 ft at 4:15AM May 13, 2021Observed: 17.6 ft at 4:30AM May 13, 2021Observed: 17.58 ft at 4:45AM May 13, 2021Observed: 17.58 ft at 5:00AM May 13, 2021Observed: 17.58 ft at 5:15AM May 13, 2021Observed: 17.57 ft at 5:30AM May 13, 2021Observed: 17.57 ft at 5:45AM May 13, 2021Observed: 17.55 ft at 6:00AM May 13, 2021Observed: 17.56 ft at 6:15AM May 13, 2021Observed: 17.55 ft at 6:30AM May 13, 2021Observed: 17.55 ft at 6:45AM May 13, 2021Observed: 17.56 ft at 7:00AM May 13, 2021Observed: 17.54 ft at 7:15AM May 13, 2021Observed: 17.54 ft at 7:30AM May 13, 2021Observed: 17.54 ft at 7:45AM May 13, 2021Observed: 17.52 ft at 8:00AM May 13, 2021Observed: 17.52 ft at 8:15AM May 13, 2021Observed: 17.5 ft at 8:30AM May 13, 2021Observed: 17.51 ft at 8:45AM May 13, 2021Observed: 17.5 ft at 9:00AM May 13, 2021Observed: 17.49 ft at 9:15AM May 13, 2021Observed: 17.5 ft at 9:30AM May 13, 2021Observed: 17.49 ft at 9:45AM May 13, 2021Observed: 17.48 ft at 10:00AM May 13, 2021Observed: 17.47 ft at 10:15AM May 13, 2021Observed: 17.47 ft at 10:30AM May 13, 2021Observed: 17.45 ft at 10:45AM May 13, 2021Observed: 17.45 ft at 11:00AM May 13, 2021Observed: 17.45 ft at 11:15AM May 13, 2021Observed: 17.42 ft at 11:30AM May 13, 2021Observed: 17.42 ft at 11:45AM May 13, 2021Observed: 17.42 ft at 12:00PM May 13, 2021Observed: 17.42 ft at 12:15PM May 13, 2021Observed: 17.42 ft at 12:30PM May 13, 2021Observed: 17.4 ft at 12:45PM May 13, 2021Observed: 17.4 ft at 1:00PM May 13, 2021Observed: 17.39 ft at 1:15PM May 13, 2021Observed: 17.37 ft at 1:30PM May 13, 2021Observed: 17.36 ft at 1:45PM May 13, 2021Observed: 17.36 ft at 2:00PM May 13, 2021Observed: 17.36 ft at 2:15PM May 13, 2021Observed: 17.37 ft at 2:30PM May 13, 2021Observed: 17.35 ft at 2:45PM May 13, 2021Observed: 17.32 ft at 3:00PM May 13, 2021Observed: 17.33 ft at 3:15PM May 13, 2021Observed: 17.31 ft at 3:30PM May 13, 2021Observed: 17.31 ft at 3:45PM May 13, 2021Observed: 17.29 ft at 4:00PM May 13, 2021Observed: 17.29 ft at 4:15PM May 13, 2021Observed: 17.29 ft at 4:30PM May 13, 2021Observed: 17.26 ft at 4:45PM May 13, 2021Observed: 17.26 ft at 5:00PM May 13, 2021Observed: 17.24 ft at 5:15PM May 13, 2021Observed: 17.24 ft at 5:30PM May 13, 2021Observed: 17.23 ft at 5:45PM May 13, 2021Observed: 17.22 ft at 6:00PM May 13, 2021Observed: 17.21 ft at 6:15PM May 13, 2021Observed: 17.21 ft at 6:30PM May 13, 2021Observed: 17.2 ft at 6:45PM May 13, 2021Observed: 17.19 ft at 7:00PM May 13, 2021Observed: 17.16 ft at 7:15PM May 13, 2021Observed: 17.16 ft at 7:30PM May 13, 2021Observed: 17.14 ft at 7:45PM May 13, 2021Observed: 17.15 ft at 8:00PM May 13, 2021Observed: 17.13 ft at 8:15PM May 13, 2021Observed: 17.12 ft at 8:30PM May 13, 2021Observed: 17.11 ft at 8:45PM May 13, 2021Observed: 17.1 ft at 9:00PM May 13, 2021Observed: 17.09 ft at 9:15PM May 13, 2021Observed: 17.06 ft at 9:30PM May 13, 2021Observed: 17.05 ft at 9:45PM May 13, 2021Observed: 17.06 ft at 10:00PM May 13, 2021Observed: 17.04 ft at 10:15PM May 13, 2021Observed: 17.03 ft at 10:30PM May 13, 2021Observed: 17.02 ft at 10:45PM May 13, 2021Observed: 16.99 ft at 11:00PM May 13, 2021Observed: 17 ft at 11:15PM May 13, 2021Observed: 16.98 ft at 11:30PM May 13, 2021Observed: 16.97 ft at 11:45PM May 13, 2021Observed: 16.94 ft at 12:00AM May 14, 2021Observed: 16.94 ft at 12:15AM May 14, 2021Observed: 16.93 ft at 12:30AM May 14, 2021Observed: 16.91 ft at 12:45AM May 14, 2021Observed: 16.91 ft at 1:00AM May 14, 2021Observed: 16.9 ft at 1:15AM May 14, 2021Observed: 16.87 ft at 1:30AM May 14, 2021Observed: 16.86 ft at 1:45AM May 14, 2021Observed: 16.83 ft at 2:00AM May 14, 2021Observed: 16.84 ft at 2:15AM May 14, 2021Observed: 16.8 ft at 2:30AM May 14, 2021Observed: 16.8 ft at 2:45AM May 14, 2021Observed: 16.77 ft at 3:00AM May 14, 2021Observed: 16.77 ft at 3:15AM May 14, 2021Observed: 16.76 ft at 3:30AM May 14, 2021Observed: 16.75 ft at 3:45AM May 14, 2021Observed: 16.72 ft at 4:00AM May 14, 2021Observed: 16.72 ft at 4:15AM May 14, 2021Observed: 16.7 ft at 4:30AM May 14, 2021Observed: 16.7 ft at 4:45AM May 14, 2021Observed: 16.66 ft at 5:00AM May 14, 2021Observed: 16.66 ft at 5:15AM May 14, 2021Observed: 16.63 ft at 5:30AM May 14, 2021Observed: 16.62 ft at 5:45AM May 14, 2021Observed: 16.59 ft at 6:00AM May 14, 2021Observed: 16.58 ft at 6:15AM May 14, 2021Observed: 16.57 ft at 6:30AM May 14, 2021Observed: 16.56 ft at 6:45AM May 14, 2021Observed: 16.54 ft at 7:00AM May 14, 2021Observed: 16.52 ft at 7:15AM May 14, 2021Observed: 16.51 ft at 7:30AM May 14, 2021Observed: 16.49 ft at 7:45AM May 14, 2021Observed: 16.46 ft at 8:00AM May 14, 2021Observed: 16.47 ft at 8:15AM May 14, 2021Observed: 16.43 ft at 8:30AM May 14, 2021Observed: 16.41 ft at 8:45AM May 14, 2021Observed: 16.4 ft at 9:00AM May 14, 2021Highest Forecast: 15.1 ft 2:00PM May 14, 2021Forecast: 14.3 ft 8:00PM May 14, 2021Forecast: 13.5 ft 2:00AM May 15, 2021Forecast: 12.6 ft 8:00AM May 15, 2021Forecast: 11.6 ft 2:00PM May 15, 2021Forecast: 10.5 ft 8:00PM May 15, 2021Forecast: 9.4 ft 2:00AM May 16, 2021Forecast: 8.6 ft 8:00AM May 16, 2021Forecast: 8.1 ft 2:00PM May 16, 2021Forecast: 7.6 ft 8:00PM May 16, 2021Forecast: 7.2 ft 2:00AM May 17, 2021Forecast: 6.9 ft 8:00AM May 17, 2021Jump to USGS siteDCRI3(plotting HGIRG) Graph Created (9:38AM May 14, 2021)ObservedForecast (issued 9:44AM May 13)Latest observed value: 16.4 ft at 9:00 AM EDT 14-May-2021. Flood Stage is 17 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 72 hours into the future from the forecast issuance time.

NOTE: Forecasts for the St. Marys River at Decatur are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - at Willshire Upstream Gauge Downstream Gauge Downstream Gauge - near Fort Wayne
Flood Categories (in feet)
Major Flood Stage: 24
Moderate Flood Stage: 20
Flood Stage: 17
Action Stage: 13
Low Stage (in feet): -9999

Historic Crests
(1) 26.94 ft on 07/09/2003
(2) 26.50 ft on 03/26/1913
(3) 25.10 ft on 06/18/2015
(4) 24.40 ft on 03/14/1982
(5) 24.31 ft on 02/25/1985
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 21.40 ft on 05/20/2019 (P)
(2) 21.58 ft on 04/28/2019 (P)
(3) 18.14 ft on 02/26/2018 (P)
(4) 21.68 ft on 05/26/2017
(5) 17.23 ft on 03/15/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.35 ft on 01/29/2000
(2) 2.35 ft on 01/30/2000
(3) 2.40 ft on 01/31/2000
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.
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 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
30.6 Flood water begins to hit the bottom of the bridge at the gage site.
27.5 Flood water reaches the 100 year flood level.
26.5 Record flooding is in progress. Evacuations are necessary in Decatur, Indiana and Wilshire, Ohio. Serious flooding of the Central Soya Plant can be expected along with widespread flooding and disruption of land transportation.
24.5 Major flooding is in progress with water at the top of the levee protecting the Central Soya Plant. US Highway 33 near Willshire, Ohio begins to flood. Extensive flooding of the east side of Decatur along with Bellmont High School occurs. Evacuations become necessary.
23.5 Many east side city streets and county roads are flooded. Evacuation of east side residents near Bellmont High School becomes necessary.
23 Portions of Ohio Routes 33, 49 and 81 are closed near Willshire.
22.5 Piqua Road begins to flood at Decatur. Evacuations begin on Ogg Street. Ohio State Route 49 near Willshire becomes flooded.
21.5 High water affects Piqua Rd...Ohio State Route 49 near the state line along with east side Decatur streets. Residential flooding begins on East Jackson and Ogg Streets. Bellmont High School grounds begin flooding.
20.5 Indiana 101 north of Pleasant Mills is closed by flood water. Extensive agricultural flooding is in progress. Residents of the east and southeast side of Decatur become concerned.
19.5 Flooding expands into more farm land in the Decatur area. Flood waters approach Piqua Road...Ohio State Route 49 and Indiana 101 just north of Pleasant Mills. Flood water begins to cross Ohio highway 49 north of Willshire, Ohio.
18.8 Flood water begins to cross Ohio Highway 49 north of Willshire, Ohio.
18.5 County Road 225 North...just north of Pleasant Mills Indiana is closed by flood water. Low land areas of Kekionga Park on the southeast side of Decatur begin flooding. Flooding is limited to farm land in Pleasant Mills Indiana and Willshire Ohio.
17.5 County road 225 north of Pleasant Mills is flooded. Agricultural land flooding increases in northern...central and eastern Adams County.
17 Agricultural flooding occurs along the river in northern...central and eastern Adams County.
Photos
(1) Record flood in July 2003 around Decatur Indiana
(2) More pictures of the record flooding that occurred in July 2003 around Decatur Indiana
(3) More pictures of the record flooding in July 2003
(4) More pictures of the record flooding in July 2003
(5) More pictures of the record flooding in July 2003
(6) More pictures of the record flooding in July 2003
About This Location Collapse

Latitude: 40.848060° N, Longitude: 84.937780° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 17 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 760.12 ft 777.12 ft 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 Not Available Not Available  

Current/Historical Observations:
Additional Information Collapse
Potential River Levels - Used to
Potential River Levels
Used to Estimate the Chance of Flooding and the Range of Possible River Levels
10 Day (HEFS) 7 Day (NAEFS) River Forecast VS. River Potential
HEFS Ensemble NAEFS Ensemble Outlook vs. Forecast

Note: Use the official hydrograph at the top of this web page for river levels within the next 72 hours.

Click individual graphics to enlarge.
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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
Northern Indiana Weather Forecast Office
7506 E 850 N
Syracuse, IN 46567
(574) 834-1104
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