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Hydrograph River at a Glance Download
St. Marys River at Great Mills Stage (ft)Flow (cfs)Observed: 1.41 ft at 9:30AM Jul 14, 2018Observed: 1.41 ft at 9:45AM Jul 14, 2018Observed: 1.41 ft at 10:00AM Jul 14, 2018Observed: 1.41 ft at 10:15AM Jul 14, 2018Observed: 1.41 ft at 10:30AM Jul 14, 2018Observed: 1.41 ft at 10:45AM Jul 14, 2018Observed: 1.41 ft at 11:00AM Jul 14, 2018Observed: 1.4 ft at 11:15AM Jul 14, 2018Observed: 1.4 ft at 11:30AM Jul 14, 2018Observed: 1.41 ft at 11:45AM Jul 14, 2018Observed: 1.4 ft at 12:00PM Jul 14, 2018Observed: 1.41 ft at 12:15PM Jul 14, 2018Observed: 1.41 ft at 12:30PM Jul 14, 2018Observed: 1.41 ft at 12:45PM Jul 14, 2018Observed: 1.41 ft at 1:00PM Jul 14, 2018Observed: 1.41 ft at 1:15PM Jul 14, 2018Observed: 1.41 ft at 1:30PM Jul 14, 2018Observed: 1.4 ft at 1:45PM Jul 14, 2018Observed: 1.39 ft at 2:00PM Jul 14, 2018Observed: 1.39 ft at 2:15PM Jul 14, 2018Observed: 1.39 ft at 2:30PM Jul 14, 2018Observed: 1.39 ft at 2:45PM Jul 14, 2018Observed: 1.39 ft at 3:00PM Jul 14, 2018Observed: 1.39 ft at 3:15PM Jul 14, 2018Observed: 1.4 ft at 3:30PM Jul 14, 2018Observed: 1.4 ft at 3:45PM Jul 14, 2018Observed: 1.4 ft at 4:00PM Jul 14, 2018Observed: 1.4 ft at 4:15PM Jul 14, 2018Observed: 1.4 ft at 4:30PM Jul 14, 2018Observed: 1.39 ft at 4:45PM Jul 14, 2018Observed: 1.39 ft at 5:00PM Jul 14, 2018Observed: 1.39 ft at 5:15PM Jul 14, 2018Observed: 1.39 ft at 5:30PM Jul 14, 2018Observed: 1.39 ft at 5:45PM Jul 14, 2018Observed: 1.39 ft at 6:00PM Jul 14, 2018Observed: 1.39 ft at 6:15PM Jul 14, 2018Observed: 1.39 ft at 6:30PM Jul 14, 2018Observed: 1.39 ft at 6:45PM Jul 14, 2018Observed: 1.39 ft at 7:00PM Jul 14, 2018Observed: 1.39 ft at 7:15PM Jul 14, 2018Observed: 1.39 ft at 7:30PM Jul 14, 2018Observed: 1.39 ft at 7:45PM Jul 14, 2018Observed: 1.38 ft at 8:00PM Jul 14, 2018Observed: 1.39 ft at 8:15PM Jul 14, 2018Observed: 1.39 ft at 8:30PM Jul 14, 2018Observed: 1.39 ft at 8:45PM Jul 14, 2018Observed: 1.39 ft at 9:00PM Jul 14, 2018Observed: 1.39 ft at 9:15PM Jul 14, 2018Observed: 1.39 ft at 9:30PM Jul 14, 2018Observed: 1.39 ft at 9:45PM Jul 14, 2018Observed: 1.39 ft at 10:00PM Jul 14, 2018Observed: 1.39 ft at 10:15PM Jul 14, 2018Observed: 1.39 ft at 10:30PM Jul 14, 2018Observed: 1.38 ft at 10:45PM Jul 14, 2018Observed: 1.38 ft at 11:00PM Jul 14, 2018Observed: 1.38 ft at 11:15PM Jul 14, 2018Observed: 1.38 ft at 11:30PM Jul 14, 2018Observed: 1.38 ft at 11:45PM Jul 14, 2018Observed: 1.38 ft at 12:00AM Jul 15, 2018Observed: 1.38 ft at 12:15AM Jul 15, 2018Observed: 1.38 ft at 12:30AM Jul 15, 2018Observed: 1.38 ft at 12:45AM Jul 15, 2018Observed: 1.38 ft at 1:00AM Jul 15, 2018Observed: 1.38 ft at 1:15AM Jul 15, 2018Observed: 1.38 ft at 1:30AM Jul 15, 2018Observed: 1.38 ft at 1:45AM Jul 15, 2018Observed: 1.38 ft at 2:00AM Jul 15, 2018Observed: 1.38 ft at 2:15AM Jul 15, 2018Observed: 1.38 ft at 2:30AM Jul 15, 2018Observed: 1.38 ft at 2:45AM Jul 15, 2018Observed: 1.38 ft at 3:00AM Jul 15, 2018Observed: 1.38 ft at 3:15AM Jul 15, 2018Observed: 1.38 ft at 3:30AM Jul 15, 2018Observed: 1.38 ft at 3:45AM Jul 15, 2018Observed: 1.38 ft at 4:00AM Jul 15, 2018Observed: 1.38 ft at 4:15AM Jul 15, 2018Observed: 1.38 ft at 4:30AM Jul 15, 2018Observed: 1.39 ft at 4:45AM Jul 15, 2018Observed: 1.39 ft at 5:00AM Jul 15, 2018Observed: 1.39 ft at 5:15AM Jul 15, 2018Observed: 1.39 ft at 5:30AM Jul 15, 2018Observed: 1.39 ft at 5:45AM Jul 15, 2018Observed: 1.39 ft at 6:00AM Jul 15, 2018Observed: 1.39 ft at 6:15AM Jul 15, 2018Observed: 1.39 ft at 6:30AM Jul 15, 2018Observed: 1.4 ft at 6:45AM Jul 15, 2018Observed: 1.4 ft at 7:00AM Jul 15, 2018Observed: 1.4 ft at 7:15AM Jul 15, 2018Observed: 1.39 ft at 7:30AM Jul 15, 2018Observed: 1.39 ft at 7:45AM Jul 15, 2018Observed: 1.39 ft at 8:00AM Jul 15, 2018Observed: 1.39 ft at 8:15AM Jul 15, 2018Observed: 1.4 ft at 8:30AM Jul 15, 2018Observed: 1.4 ft at 8:45AM Jul 15, 2018Observed: 1.4 ft at 9:00AM Jul 15, 2018Observed: 1.4 ft at 9:15AM Jul 15, 2018Observed: 1.4 ft at 9:30AM Jul 15, 2018Observed: 1.4 ft at 9:45AM Jul 15, 2018Observed: 1.4 ft at 10:00AM Jul 15, 2018Observed: 1.4 ft at 10:15AM Jul 15, 2018Observed: 1.4 ft at 10:30AM Jul 15, 2018Observed: 1.4 ft at 10:45AM Jul 15, 2018Observed: 1.4 ft at 11:00AM Jul 15, 2018Observed: 1.4 ft at 11:15AM Jul 15, 2018Observed: 1.41 ft at 11:30AM Jul 15, 2018Observed: 1.4 ft at 11:45AM Jul 15, 2018Observed: 1.4 ft at 12:00PM Jul 15, 2018Observed: 1.4 ft at 12:15PM Jul 15, 2018Observed: 1.4 ft at 12:30PM Jul 15, 2018Observed: 1.4 ft at 12:45PM Jul 15, 2018Observed: 1.4 ft at 1:00PM Jul 15, 2018Observed: 1.4 ft at 1:15PM Jul 15, 2018Observed: 1.4 ft at 1:30PM Jul 15, 2018Observed: 1.4 ft at 1:45PM Jul 15, 2018Observed: 1.39 ft at 2:00PM Jul 15, 2018Observed: 1.4 ft at 2:15PM Jul 15, 2018Observed: 1.4 ft at 2:30PM Jul 15, 2018Observed: 1.4 ft at 2:45PM Jul 15, 2018Observed: 1.4 ft at 3:00PM Jul 15, 2018Observed: 1.4 ft at 3:15PM Jul 15, 2018Observed: 1.4 ft at 3:30PM Jul 15, 2018Observed: 1.4 ft at 3:45PM Jul 15, 2018Observed: 1.4 ft at 4:00PM Jul 15, 2018Observed: 1.4 ft at 4:15PM Jul 15, 2018Observed: 1.39 ft at 4:30PM Jul 15, 2018Observed: 1.39 ft at 4:45PM Jul 15, 2018Observed: 1.39 ft at 5:00PM Jul 15, 2018Observed: 1.39 ft at 5:15PM Jul 15, 2018Observed: 1.39 ft at 5:30PM Jul 15, 2018Observed: 1.39 ft at 5:45PM Jul 15, 2018Observed: 1.39 ft at 6:00PM Jul 15, 2018Observed: 1.39 ft at 6:15PM Jul 15, 2018Observed: 1.39 ft at 6:30PM Jul 15, 2018Observed: 1.39 ft at 6:45PM Jul 15, 2018Observed: 1.39 ft at 7:00PM Jul 15, 2018Observed: 1.39 ft at 7:15PM Jul 15, 2018Observed: 1.39 ft at 7:30PM Jul 15, 2018Observed: 1.39 ft at 7:45PM Jul 15, 2018Observed: 1.39 ft at 8:00PM Jul 15, 2018Observed: 1.38 ft at 8:15PM Jul 15, 2018Observed: 1.39 ft at 8:30PM Jul 15, 2018Observed: 1.38 ft at 8:45PM Jul 15, 2018Observed: 1.38 ft at 9:00PM Jul 15, 2018Observed: 1.39 ft at 9:15PM Jul 15, 2018Observed: 1.38 ft at 9:30PM Jul 15, 2018Observed: 1.38 ft at 9:45PM Jul 15, 2018Observed: 1.38 ft at 10:00PM Jul 15, 2018Observed: 1.39 ft at 10:15PM Jul 15, 2018Observed: 1.38 ft at 10:30PM Jul 15, 2018Observed: 1.38 ft at 10:45PM Jul 15, 2018Observed: 1.38 ft at 11:00PM Jul 15, 2018Observed: 1.39 ft at 11:15PM Jul 15, 2018Observed: 1.38 ft at 11:30PM Jul 15, 2018Observed: 1.39 ft at 11:45PM Jul 15, 2018Observed: 1.39 ft at 12:00AM Jul 16, 2018Observed: 1.39 ft at 12:15AM Jul 16, 2018Observed: 1.39 ft at 12:30AM Jul 16, 2018Observed: 1.39 ft at 12:45AM Jul 16, 2018Observed: 1.39 ft at 1:00AM Jul 16, 2018Observed: 1.39 ft at 1:15AM Jul 16, 2018Observed: 1.39 ft at 1:30AM Jul 16, 2018Observed: 1.39 ft at 1:45AM Jul 16, 2018Observed: 1.39 ft at 2:00AM Jul 16, 2018Observed: 1.39 ft at 2:15AM Jul 16, 2018Observed: 1.39 ft at 2:30AM Jul 16, 2018Observed: 1.39 ft at 2:45AM Jul 16, 2018Observed: 1.39 ft at 3:00AM Jul 16, 2018Observed: 1.39 ft at 3:15AM Jul 16, 2018Observed: 1.39 ft at 3:30AM Jul 16, 2018Observed: 1.39 ft at 3:45AM Jul 16, 2018Observed: 1.39 ft at 4:00AM Jul 16, 2018Observed: 1.39 ft at 4:15AM Jul 16, 2018Observed: 1.39 ft at 4:30AM Jul 16, 2018Observed: 1.39 ft at 4:45AM Jul 16, 2018Observed: 1.39 ft at 5:00AM Jul 16, 2018Observed: 1.4 ft at 5:15AM Jul 16, 2018Observed: 1.4 ft at 5:30AM Jul 16, 2018Observed: 1.4 ft at 5:45AM Jul 16, 2018Observed: 1.4 ft at 6:00AM Jul 16, 2018Observed: 1.4 ft at 6:15AM Jul 16, 2018Observed: 1.4 ft at 6:30AM Jul 16, 2018Observed: 1.4 ft at 6:45AM Jul 16, 2018Observed: 1.4 ft at 7:00AM Jul 16, 2018Observed: 1.4 ft at 7:15AM Jul 16, 2018Observed: 1.4 ft at 7:30AM Jul 16, 2018Observed: 1.4 ft at 7:45AM Jul 16, 2018Observed: 1.4 ft at 8:00AM Jul 16, 2018Observed: 1.4 ft at 8:15AM Jul 16, 2018Observed: 1.4 ft at 8:30AM Jul 16, 2018Observed: 1.4 ft at 8:45AM Jul 16, 2018Observed: 1.41 ft at 9:00AM Jul 16, 2018Observed: 1.4 ft at 9:15AM Jul 16, 2018Observed: 1.4 ft at 9:30AM Jul 16, 2018Observed: 1.4 ft at 9:45AM Jul 16, 2018Observed: 1.4 ft at 10:00AM Jul 16, 2018Observed: 1.4 ft at 10:15AM Jul 16, 2018Observed: 1.4 ft at 10:30AM Jul 16, 2018Observed: 1.41 ft at 10:45AM Jul 16, 2018Observed: 1.4 ft at 11:00AM Jul 16, 2018Observed: 1.4 ft at 11:15AM Jul 16, 2018Observed: 1.4 ft at 11:30AM Jul 16, 2018Observed: 1.4 ft at 11:45AM Jul 16, 2018Observed: 1.4 ft at 12:00PM Jul 16, 2018Observed: 1.4 ft at 12:15PM Jul 16, 2018Observed: 1.4 ft at 12:30PM Jul 16, 2018Observed: 1.4 ft at 12:45PM Jul 16, 2018Observed: 1.4 ft at 1:00PM Jul 16, 2018Observed: 1.4 ft at 1:15PM Jul 16, 2018Observed: 1.4 ft at 1:30PM Jul 16, 2018Observed: 1.4 ft at 1:45PM Jul 16, 2018Observed: 1.4 ft at 2:00PM Jul 16, 2018Observed: 1.4 ft at 2:15PM Jul 16, 2018Observed: 1.39 ft at 2:30PM Jul 16, 2018Observed: 1.39 ft at 2:45PM Jul 16, 2018Observed: 1.39 ft at 3:00PM Jul 16, 2018Observed: 1.39 ft at 3:15PM Jul 16, 2018Observed: 1.4 ft at 3:30PM Jul 16, 2018Observed: 1.4 ft at 3:45PM Jul 16, 2018Observed: 1.4 ft at 4:00PM Jul 16, 2018Observed: 1.4 ft at 4:15PM Jul 16, 2018Observed: 1.4 ft at 4:30PM Jul 16, 2018Observed: 1.39 ft at 4:45PM Jul 16, 2018Observed: 1.39 ft at 5:00PM Jul 16, 2018Observed: 1.39 ft at 5:15PM Jul 16, 2018Observed: 1.39 ft at 5:30PM Jul 16, 2018Observed: 1.39 ft at 5:45PM Jul 16, 2018Observed: 1.39 ft at 6:00PM Jul 16, 2018Observed: 1.39 ft at 6:15PM Jul 16, 2018Observed: 1.39 ft at 6:30PM Jul 16, 2018Observed: 1.39 ft at 6:45PM Jul 16, 2018Observed: 1.39 ft at 7:00PM Jul 16, 2018Observed: 1.38 ft at 7:15PM Jul 16, 2018Observed: 1.39 ft at 7:30PM Jul 16, 2018Observed: 1.38 ft at 7:45PM Jul 16, 2018Observed: 1.38 ft at 8:00PM Jul 16, 2018Observed: 1.39 ft at 8:15PM Jul 16, 2018Observed: 1.38 ft at 8:30PM Jul 16, 2018Observed: 1.38 ft at 8:45PM Jul 16, 2018Observed: 1.38 ft at 9:00PM Jul 16, 2018Observed: 1.38 ft at 9:15PM Jul 16, 2018Observed: 1.38 ft at 9:30PM Jul 16, 2018Observed: 1.38 ft at 9:45PM Jul 16, 2018Observed: 1.38 ft at 10:00PM Jul 16, 2018Observed: 1.38 ft at 10:15PM Jul 16, 2018Observed: 1.37 ft at 10:30PM Jul 16, 2018Observed: 1.38 ft at 10:45PM Jul 16, 2018Observed: 1.37 ft at 11:00PM Jul 16, 2018Observed: 1.37 ft at 11:15PM Jul 16, 2018Observed: 1.38 ft at 11:30PM Jul 16, 2018Observed: 1.38 ft at 11:45PM Jul 16, 2018Observed: 1.38 ft at 12:00AM Jul 17, 2018Observed: 1.38 ft at 12:15AM Jul 17, 2018Observed: 1.38 ft at 12:30AM Jul 17, 2018Observed: 1.38 ft at 12:45AM Jul 17, 2018Observed: 1.38 ft at 1:00AM Jul 17, 2018Observed: 1.38 ft at 1:15AM Jul 17, 2018Observed: 1.38 ft at 1:30AM Jul 17, 2018Observed: 1.38 ft at 1:45AM Jul 17, 2018Observed: 1.38 ft at 2:00AM Jul 17, 2018Observed: 1.38 ft at 2:15AM Jul 17, 2018Observed: 1.38 ft at 2:30AM Jul 17, 2018Observed: 1.38 ft at 2:45AM Jul 17, 2018Observed: 1.38 ft at 3:00AM Jul 17, 2018Observed: 1.38 ft at 3:15AM Jul 17, 2018Observed: 1.39 ft at 3:30AM Jul 17, 2018Observed: 1.39 ft at 3:45AM Jul 17, 2018Observed: 1.39 ft at 4:00AM Jul 17, 2018Observed: 1.39 ft at 4:15AM Jul 17, 2018Observed: 1.39 ft at 4:30AM Jul 17, 2018Observed: 1.39 ft at 4:45AM Jul 17, 2018Observed: 1.39 ft at 5:00AM Jul 17, 2018Observed: 1.39 ft at 5:15AM Jul 17, 2018Observed: 1.39 ft at 5:30AM Jul 17, 2018Observed: 1.39 ft at 5:45AM Jul 17, 2018Observed: 1.39 ft at 6:00AM Jul 17, 2018Observed: 1.39 ft at 6:15AM Jul 17, 2018Observed: 1.39 ft at 6:30AM Jul 17, 2018Observed: 1.39 ft at 6:45AM Jul 17, 2018Observed: 1.4 ft at 7:00AM Jul 17, 2018Observed: 1.4 ft at 7:15AM Jul 17, 2018Observed: 1.4 ft at 7:30AM Jul 17, 2018Observed: 1.39 ft at 7:45AM Jul 17, 2018Observed: 1.39 ft at 8:00AM Jul 17, 2018Observed: 1.39 ft at 8:15AM Jul 17, 2018Observed: 1.39 ft at 8:30AM Jul 17, 2018Observed: 1.39 ft at 8:45AM Jul 17, 2018Observed: 1.39 ft at 9:00AM Jul 17, 2018Observed: 1.39 ft at 9:15AM Jul 17, 2018Observed: 1.39 ft at 9:30AM Jul 17, 2018Observed: 1.39 ft at 9:45AM Jul 17, 2018Observed: 1.39 ft at 10:00AM Jul 17, 2018Observed: 1.39 ft at 10:15AM Jul 17, 2018Observed: 1.39 ft at 10:30AM Jul 17, 2018Observed: 1.4 ft at 10:45AM Jul 17, 2018Observed: 1.39 ft at 11:00AM Jul 17, 2018Observed: 1.4 ft at 11:15AM Jul 17, 2018Observed: 1.4 ft at 11:30AM Jul 17, 2018Observed: 1.39 ft at 11:45AM Jul 17, 2018Observed: 1.39 ft at 12:00PM Jul 17, 2018Observed: 1.39 ft at 12:15PM Jul 17, 2018Observed: 1.39 ft at 12:30PM Jul 17, 2018Observed: 1.39 ft at 12:45PM Jul 17, 2018Observed: 1.39 ft at 1:00PM Jul 17, 2018Observed: 1.39 ft at 1:15PM Jul 17, 2018Observed: 1.4 ft at 1:30PM Jul 17, 2018Observed: 1.4 ft at 1:45PM Jul 17, 2018Observed: 1.39 ft at 2:00PM Jul 17, 2018Observed: 1.39 ft at 2:15PM Jul 17, 2018Observed: 1.39 ft at 2:30PM Jul 17, 2018Observed: 1.39 ft at 2:45PM Jul 17, 2018Observed: 1.39 ft at 3:00PM Jul 17, 2018Observed: 1.39 ft at 3:15PM Jul 17, 2018Observed: 1.39 ft at 3:30PM Jul 17, 2018Observed: 1.39 ft at 3:45PM Jul 17, 2018Observed: 1.39 ft at 4:00PM Jul 17, 2018Observed: 1.39 ft at 4:15PM Jul 17, 2018Observed: 1.39 ft at 4:30PM Jul 17, 2018Observed: 1.43 ft at 4:45PM Jul 17, 2018Observed: 1.44 ft at 5:00PM Jul 17, 2018Observed: 1.45 ft at 5:15PM Jul 17, 2018Observed: 1.45 ft at 5:30PM Jul 17, 2018Observed: 1.45 ft at 5:45PM Jul 17, 2018Observed: 1.46 ft at 6:00PM Jul 17, 2018Observed: 1.46 ft at 6:15PM Jul 17, 2018Observed: 1.46 ft at 6:30PM Jul 17, 2018Observed: 1.46 ft at 6:45PM Jul 17, 2018Observed: 1.46 ft at 7:00PM Jul 17, 2018Observed: 1.47 ft at 7:15PM Jul 17, 2018Observed: 1.47 ft at 7:30PM Jul 17, 2018Observed: 1.47 ft at 7:45PM Jul 17, 2018Observed: 1.48 ft at 8:00PM Jul 17, 2018Observed: 1.49 ft at 8:15PM Jul 17, 2018Observed: 1.5 ft at 8:30PM Jul 17, 2018Highest Observation: 1.52 ft at 8:45PM Jul 17, 2018Highest Observation: 1.52 ft at 9:00PM Jul 17, 2018Highest Observation: 1.52 ft at 9:15PM Jul 17, 2018Highest Observation: 1.52 ft at 9:30PM Jul 17, 2018Observed: 1.51 ft at 9:45PM Jul 17, 2018Observed: 1.51 ft at 10:00PM Jul 17, 2018Observed: 1.51 ft at 10:15PM Jul 17, 2018Observed: 1.5 ft at 10:30PM Jul 17, 2018Observed: 1.5 ft at 10:45PM Jul 17, 2018Observed: 1.49 ft at 11:00PM Jul 17, 2018Observed: 1.49 ft at 11:15PM Jul 17, 2018Observed: 1.49 ft at 11:30PM Jul 17, 2018Observed: 1.48 ft at 11:45PM Jul 17, 2018Observed: 1.48 ft at 12:00AM Jul 18, 2018Observed: 1.48 ft at 12:15AM Jul 18, 2018Observed: 1.49 ft at 12:30AM Jul 18, 2018Observed: 1.49 ft at 12:45AM Jul 18, 2018Observed: 1.49 ft at 1:00AM Jul 18, 2018Observed: 1.49 ft at 1:15AM Jul 18, 2018Observed: 1.49 ft at 1:30AM Jul 18, 2018Observed: 1.49 ft at 1:45AM Jul 18, 2018Observed: 1.49 ft at 2:00AM Jul 18, 2018Observed: 1.49 ft at 2:15AM Jul 18, 2018Observed: 1.49 ft at 2:30AM Jul 18, 2018Observed: 1.48 ft at 2:45AM Jul 18, 2018Observed: 1.48 ft at 3:00AM Jul 18, 2018Observed: 1.47 ft at 3:15AM Jul 18, 2018Observed: 1.47 ft at 3:30AM Jul 18, 2018Observed: 1.47 ft at 3:45AM Jul 18, 2018Observed: 1.47 ft at 4:00AM Jul 18, 2018Observed: 1.47 ft at 4:15AM Jul 18, 2018Observed: 1.46 ft at 4:30AM Jul 18, 2018Observed: 1.46 ft at 4:45AM Jul 18, 2018Observed: 1.46 ft at 5:00AM Jul 18, 2018Observed: 1.46 ft at 5:15AM Jul 18, 2018Observed: 1.45 ft at 5:30AM Jul 18, 2018Observed: 1.46 ft at 5:45AM Jul 18, 2018Observed: 1.46 ft at 6:00AM Jul 18, 2018Observed: 1.46 ft at 6:15AM Jul 18, 2018Observed: 1.46 ft at 6:30AM Jul 18, 2018Observed: 1.46 ft at 6:45AM Jul 18, 2018Observed: 1.45 ft at 7:00AM Jul 18, 2018Observed: 1.46 ft at 7:15AM Jul 18, 2018Observed: 1.45 ft at 7:30AM Jul 18, 2018Observed: 1.45 ft at 7:45AM Jul 18, 2018Observed: 1.45 ft at 8:00AM Jul 18, 2018Observed: 1.45 ft at 8:15AM Jul 18, 2018Observed: 1.45 ft at 8:30AM Jul 18, 2018Observed: 1.45 ft at 8:45AM Jul 18, 2018Observed: 1.45 ft at 9:00AM Jul 18, 2018Observed: 1.45 ft at 9:15AM Jul 18, 2018Observed: 1.44 ft at 9:30AM Jul 18, 2018Observed: 1.45 ft at 9:45AM Jul 18, 2018Observed: 1.45 ft at 10:00AM Jul 18, 2018Observed: 1.44 ft at 10:15AM Jul 18, 2018Observed: 1.44 ft at 10:30AM Jul 18, 2018Observed: 1.44 ft at 10:45AM Jul 18, 2018Observed: 1.44 ft at 11:00AM Jul 18, 2018Observed: 1.44 ft at 11:15AM Jul 18, 2018Observed: 1.44 ft at 11:30AM Jul 18, 2018Observed: 1.43 ft at 11:45AM Jul 18, 2018Observed: 1.44 ft at 12:00PM Jul 18, 2018Observed: 1.44 ft at 12:15PM Jul 18, 2018Observed: 1.44 ft at 12:30PM Jul 18, 2018Observed: 1.44 ft at 12:45PM Jul 18, 2018Observed: 1.44 ft at 1:00PM Jul 18, 2018Observed: 1.43 ft at 1:15PM Jul 18, 2018Observed: 1.43 ft at 1:30PM Jul 18, 2018Observed: 1.43 ft at 1:45PM Jul 18, 2018Observed: 1.43 ft at 2:00PM Jul 18, 2018Observed: 1.42 ft at 2:15PM Jul 18, 2018Observed: 1.42 ft at 2:30PM Jul 18, 2018Observed: 1.42 ft at 2:45PM Jul 18, 2018Observed: 1.42 ft at 3:00PM Jul 18, 2018Observed: 1.42 ft at 3:15PM Jul 18, 2018Observed: 1.42 ft at 3:30PM Jul 18, 2018Observed: 1.42 ft at 3:45PM Jul 18, 2018Observed: 1.42 ft at 4:00PM Jul 18, 2018Observed: 1.42 ft at 4:15PM Jul 18, 2018Observed: 1.42 ft at 4:30PM Jul 18, 2018Observed: 1.42 ft at 4:45PM Jul 18, 2018Observed: 1.42 ft at 5:00PM Jul 18, 2018Observed: 1.41 ft at 5:15PM Jul 18, 2018Observed: 1.42 ft at 5:30PM Jul 18, 2018Observed: 1.42 ft at 5:45PM Jul 18, 2018Observed: 1.41 ft at 6:00PM Jul 18, 2018Observed: 1.41 ft at 6:15PM Jul 18, 2018Observed: 1.41 ft at 6:30PM Jul 18, 2018Observed: 1.41 ft at 6:45PM Jul 18, 2018Observed: 1.41 ft at 7:00PM Jul 18, 2018Observed: 1.41 ft at 7:15PM Jul 18, 2018Observed: 1.41 ft at 7:30PM Jul 18, 2018Observed: 1.41 ft at 7:45PM Jul 18, 2018Observed: 1.41 ft at 8:00PM Jul 18, 2018Observed: 1.41 ft at 8:15PM Jul 18, 2018Observed: 1.41 ft at 8:30PM Jul 18, 2018Observed: 1.41 ft at 8:45PM Jul 18, 2018Observed: 1.41 ft at 9:00PM Jul 18, 2018Observed: 1.41 ft at 9:15PM Jul 18, 2018Observed: 1.4 ft at 9:30PM Jul 18, 2018Observed: 1.4 ft at 9:45PM Jul 18, 2018Observed: 1.4 ft at 10:00PM Jul 18, 2018Observed: 1.4 ft at 10:15PM Jul 18, 2018Observed: 1.4 ft at 10:30PM Jul 18, 2018Observed: 1.4 ft at 10:45PM Jul 18, 2018Observed: 1.4 ft at 11:00PM Jul 18, 2018Observed: 1.4 ft at 11:15PM Jul 18, 2018Observed: 1.4 ft at 11:30PM Jul 18, 2018Observed: 1.4 ft at 11:45PM Jul 18, 2018Observed: 1.4 ft at 12:00AM Jul 19, 2018Observed: 1.4 ft at 12:15AM Jul 19, 2018Observed: 1.4 ft at 12:30AM Jul 19, 2018Observed: 1.4 ft at 12:45AM Jul 19, 2018Observed: 1.4 ft at 1:00AM Jul 19, 2018Observed: 1.4 ft at 1:15AM Jul 19, 2018Observed: 1.41 ft at 1:30AM Jul 19, 2018Observed: 1.41 ft at 1:45AM Jul 19, 2018Observed: 1.41 ft at 2:00AM Jul 19, 2018Observed: 1.4 ft at 2:15AM Jul 19, 2018Observed: 1.4 ft at 2:30AM Jul 19, 2018Observed: 1.41 ft at 2:45AM Jul 19, 2018Observed: 1.41 ft at 3:00AM Jul 19, 2018Observed: 1.41 ft at 3:15AM Jul 19, 2018Observed: 1.41 ft at 3:30AM Jul 19, 2018Observed: 1.41 ft at 3:45AM Jul 19, 2018Observed: 1.41 ft at 4:00AM Jul 19, 2018Observed: 1.41 ft at 4:15AM Jul 19, 2018Observed: 1.41 ft at 4:30AM Jul 19, 2018Observed: 1.41 ft at 4:45AM Jul 19, 2018Observed: 1.41 ft at 5:00AM Jul 19, 2018Observed: 1.41 ft at 5:15AM Jul 19, 2018Observed: 1.41 ft at 5:30AM Jul 19, 2018Observed: 1.41 ft at 5:45AM Jul 19, 2018Observed: 1.41 ft at 6:00AM Jul 19, 2018Observed: 1.41 ft at 6:15AM Jul 19, 2018Observed: 1.41 ft at 6:30AM Jul 19, 2018Observed: 1.41 ft at 6:45AM Jul 19, 2018Observed: 1.41 ft at 7:00AM Jul 19, 2018Observed: 1.41 ft at 7:15AM Jul 19, 2018Observed: 1.41 ft at 7:30AM Jul 19, 2018Observed: 1.41 ft at 7:45AM Jul 19, 2018Observed: 1.41 ft at 8:00AM Jul 19, 2018Observed: 1.41 ft at 8:15AM Jul 19, 2018Observed: 1.4 ft at 8:30AM Jul 19, 2018GMRM2(plotting HGIRG) Graph Created (9:24AM Jul 19, 2018)ObservedLatest observed value: 1.4 ft at 8:30 AM EDT 19-Jul-2018. Flood Stage is 6 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the St. Marys River at Great Mills. Only observed stages are available for this point.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 10
Moderate Flood Stage: 8
Flood Stage: 6
Action Stage: 5
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
KML Image
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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
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10 Widespread flooding is occurring in Great Mills with water approaching homes and businesses.
8 Indian Bridge Road begins to flood as flooding becomes more widespread in Great Mills.
6 Flat Iron Road begins to flood with water in some yards in Great Mills.
About This Location Collapse

Latitude: 38.241667° N, Longitude: 76.503611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 6 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 Not Available Not Available  

Current/Historical Observations:
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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
(Baltimore/Washington) Sterling Weather Forecast Office
43858 Weather Service Rd.
Sterling, VA 20166
(703) 996-2200
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Page last modified: 21-Dec-2016 5:21 PM 		Disclaimer
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