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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.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.



Hydrograph River at a Glance Download
St. Marys River at Interstate 95 (in MHHW) Stage (ft)Observed: -0.55 ft at 6:45PM Sep 28, 2023Observed: -0.38 ft at 7:00PM Sep 28, 2023Observed: -0.25 ft at 7:15PM Sep 28, 2023Observed: -0.14 ft at 7:30PM Sep 28, 2023Observed: -0.04 ft at 7:45PM Sep 28, 2023Observed: 0.07 ft at 8:00PM Sep 28, 2023Observed: 0.18 ft at 8:15PM Sep 28, 2023Observed: 0.29 ft at 8:30PM Sep 28, 2023Observed: 0.41 ft at 8:45PM Sep 28, 2023Observed: 0.52 ft at 9:00PM Sep 28, 2023Observed: 0.67 ft at 9:15PM Sep 28, 2023Observed: 0.78 ft at 9:30PM Sep 28, 2023Observed: 0.89 ft at 9:45PM Sep 28, 2023Observed: 1.01 ft at 10:00PM Sep 28, 2023Observed: 1.1 ft at 10:15PM Sep 28, 2023Observed: 1.2 ft at 10:30PM Sep 28, 2023Observed: 1.28 ft at 10:45PM Sep 28, 2023Observed: 1.33 ft at 11:00PM Sep 28, 2023Observed: 1.36 ft at 11:15PM Sep 28, 2023Observed: 1.37 ft at 11:30PM Sep 28, 2023Observed: 1.34 ft at 11:45PM Sep 28, 2023Observed: 1.27 ft at 12:00AM Sep 29, 2023Observed: 1.17 ft at 12:15AM Sep 29, 2023Observed: 1.02 ft at 12:30AM Sep 29, 2023Observed: 0.82 ft at 12:45AM Sep 29, 2023Observed: 0.63 ft at 1:00AM Sep 29, 2023Observed: 0.43 ft at 1:15AM Sep 29, 2023Observed: 0.25 ft at 1:30AM Sep 29, 2023Observed: 0.08 ft at 1:45AM Sep 29, 2023Observed: -0.07 ft at 2:00AM Sep 29, 2023Observed: -0.24 ft at 2:15AM Sep 29, 2023Observed: -0.39 ft at 2:30AM Sep 29, 2023Observed: -0.53 ft at 2:45AM Sep 29, 2023Observed: -0.7 ft at 3:00AM Sep 29, 2023Observed: -0.87 ft at 3:15AM Sep 29, 2023Observed: -1.05 ft at 3:30AM Sep 29, 2023Observed: -1.25 ft at 3:45AM Sep 29, 2023Observed: -1.47 ft at 4:00AM Sep 29, 2023Observed: -1.67 ft at 4:15AM Sep 29, 2023Observed: -1.87 ft at 4:30AM Sep 29, 2023Observed: -2.06 ft at 4:45AM Sep 29, 2023Observed: -2.22 ft at 5:00AM Sep 29, 2023Observed: -2.3 ft at 5:15AM Sep 29, 2023Observed: -2.3 ft at 5:30AM Sep 29, 2023Observed: -2.19 ft at 5:45AM Sep 29, 2023Observed: -1.96 ft at 6:00AM Sep 29, 2023Observed: -1.65 ft at 6:15AM Sep 29, 2023Observed: -1.26 ft at 6:30AM Sep 29, 2023Observed: -0.9 ft at 6:45AM Sep 29, 2023Observed: -0.61 ft at 7:00AM Sep 29, 2023Observed: -0.42 ft at 7:15AM Sep 29, 2023Observed: -0.28 ft at 7:30AM Sep 29, 2023Observed: -0.17 ft at 7:45AM Sep 29, 2023Observed: -0.07 ft at 8:00AM Sep 29, 2023Observed: 0.04 ft at 8:15AM Sep 29, 2023Observed: 0.15 ft at 8:30AM Sep 29, 2023Observed: 0.27 ft at 8:45AM Sep 29, 2023Observed: 0.38 ft at 9:00AM Sep 29, 2023Observed: 0.51 ft at 9:15AM Sep 29, 2023Observed: 0.64 ft at 9:30AM Sep 29, 2023Observed: 0.76 ft at 9:45AM Sep 29, 2023Observed: 0.87 ft at 10:00AM Sep 29, 2023Observed: 0.98 ft at 10:15AM Sep 29, 2023Observed: 1.07 ft at 10:30AM Sep 29, 2023Observed: 1.17 ft at 10:45AM Sep 29, 2023Observed: 1.27 ft at 11:00AM Sep 29, 2023Observed: 1.33 ft at 11:15AM Sep 29, 2023Observed: 1.38 ft at 11:30AM Sep 29, 2023Highest Observation: 1.39 ft at 11:45AM Sep 29, 2023Observed: 1.37 ft at 12:00PM Sep 29, 2023Observed: 1.31 ft at 12:15PM Sep 29, 2023Observed: 1.23 ft at 12:30PM Sep 29, 2023Observed: 1.11 ft at 12:45PM Sep 29, 2023Observed: 0.94 ft at 1:00PM Sep 29, 2023Observed: 0.73 ft at 1:15PM Sep 29, 2023Observed: 0.54 ft at 1:30PM Sep 29, 2023Observed: 0.35 ft at 1:45PM Sep 29, 2023Observed: 0.17 ft at 2:00PM Sep 29, 2023Observed: 0.01 ft at 2:15PM Sep 29, 2023Observed: -0.15 ft at 2:30PM Sep 29, 2023Observed: -0.3 ft at 2:45PM Sep 29, 2023Observed: -0.44 ft at 3:00PM Sep 29, 2023Observed: -0.59 ft at 3:15PM Sep 29, 2023Observed: -0.75 ft at 3:30PM Sep 29, 2023Observed: -0.93 ft at 3:45PM Sep 29, 2023Observed: -1.11 ft at 4:00PM Sep 29, 2023Observed: -1.31 ft at 4:15PM Sep 29, 2023Observed: -1.53 ft at 4:30PM Sep 29, 2023Observed: -1.71 ft at 4:45PM Sep 29, 2023Observed: -1.9 ft at 5:00PM Sep 29, 2023Observed: -2.08 ft at 5:15PM Sep 29, 2023Observed: -2.22 ft at 5:30PM Sep 29, 2023Observed: -2.29 ft at 5:45PM Sep 29, 2023Observed: -2.27 ft at 6:00PM Sep 29, 2023Observed: -2.17 ft at 6:15PM Sep 29, 2023Observed: -1.97 ft at 6:30PM Sep 29, 2023Observed: -1.7 ft at 6:45PM Sep 29, 2023Observed: -1.37 ft at 7:00PM Sep 29, 2023Observed: -1.02 ft at 7:15PM Sep 29, 2023Observed: -0.72 ft at 7:30PM Sep 29, 2023Observed: -0.5 ft at 7:45PM Sep 29, 2023Observed: -0.35 ft at 8:00PM Sep 29, 2023Observed: -0.23 ft at 8:15PM Sep 29, 2023Observed: -0.13 ft at 8:30PM Sep 29, 2023Observed: -0.02 ft at 8:45PM Sep 29, 2023Observed: 0.09 ft at 9:00PM Sep 29, 2023Observed: 0.19 ft at 9:15PM Sep 29, 2023Observed: 0.29 ft at 9:30PM Sep 29, 2023Observed: 0.41 ft at 9:45PM Sep 29, 2023Observed: 0.54 ft at 10:00PM Sep 29, 2023Observed: 0.66 ft at 10:15PM Sep 29, 2023Observed: 0.76 ft at 10:30PM Sep 29, 2023Observed: 0.87 ft at 10:45PM Sep 29, 2023Observed: 0.96 ft at 11:00PM Sep 29, 2023Observed: 1.04 ft at 11:15PM Sep 29, 2023Observed: 1.11 ft at 11:30PM Sep 29, 2023Observed: 1.18 ft at 11:45PM Sep 29, 2023Observed: 1.2 ft at 12:00AM Sep 30, 2023Observed: 1.21 ft at 12:15AM Sep 30, 2023Observed: 1.18 ft at 12:30AM Sep 30, 2023Observed: 1.1 ft at 12:45AM Sep 30, 2023Observed: 0.99 ft at 1:00AM Sep 30, 2023Observed: 0.83 ft at 1:15AM Sep 30, 2023Observed: 0.63 ft at 1:30AM Sep 30, 2023Observed: 0.43 ft at 1:45AM Sep 30, 2023Observed: 0.23 ft at 2:00AM Sep 30, 2023Observed: 0.04 ft at 2:15AM Sep 30, 2023Observed: -0.11 ft at 2:30AM Sep 30, 2023Observed: -0.27 ft at 2:45AM Sep 30, 2023Observed: -0.43 ft at 3:00AM Sep 30, 2023Observed: -0.57 ft at 3:15AM Sep 30, 2023Observed: -0.73 ft at 3:30AM Sep 30, 2023Observed: -0.9 ft at 3:45AM Sep 30, 2023Observed: -1.08 ft at 4:00AM Sep 30, 2023Observed: -1.29 ft at 4:15AM Sep 30, 2023Observed: -1.52 ft at 4:30AM Sep 30, 2023Observed: -1.73 ft at 4:45AM Sep 30, 2023Observed: -1.95 ft at 5:00AM Sep 30, 2023Observed: -2.16 ft at 5:15AM Sep 30, 2023Observed: -2.33 ft at 5:30AM Sep 30, 2023Observed: -2.45 ft at 5:45AM Sep 30, 2023Observed: -2.51 ft at 6:00AM Sep 30, 2023Observed: -2.49 ft at 6:15AM Sep 30, 2023Observed: -2.35 ft at 6:30AM Sep 30, 2023Observed: -2.12 ft at 6:45AM Sep 30, 2023Observed: -1.8 ft at 7:00AM Sep 30, 2023Observed: -1.42 ft at 7:15AM Sep 30, 2023Observed: -1.04 ft at 7:30AM Sep 30, 2023Observed: -0.72 ft at 7:45AM Sep 30, 2023Observed: -0.52 ft at 8:00AM Sep 30, 2023Observed: -0.38 ft at 8:15AM Sep 30, 2023Observed: -0.27 ft at 8:30AM Sep 30, 2023Observed: -0.17 ft at 8:45AM Sep 30, 2023Observed: -0.06 ft at 9:00AM Sep 30, 2023Observed: 0.05 ft at 9:15AM Sep 30, 2023Observed: 0.16 ft at 9:30AM Sep 30, 2023Observed: 0.29 ft at 9:45AM Sep 30, 2023Observed: 0.42 ft at 10:00AM Sep 30, 2023Observed: 0.54 ft at 10:15AM Sep 30, 2023Observed: 0.67 ft at 10:30AM Sep 30, 2023Observed: 0.8 ft at 10:45AM Sep 30, 2023Observed: 0.89 ft at 11:00AM Sep 30, 2023Observed: 1.01 ft at 11:15AM Sep 30, 2023Observed: 1.13 ft at 11:30AM Sep 30, 2023Observed: 1.23 ft at 11:45AM Sep 30, 2023Observed: 1.3 ft at 12:00PM Sep 30, 2023Observed: 1.34 ft at 12:15PM Sep 30, 2023Observed: 1.36 ft at 12:30PM Sep 30, 2023Observed: 1.35 ft at 12:45PM Sep 30, 2023Observed: 1.31 ft at 1:00PM Sep 30, 2023Observed: 1.21 ft at 1:15PM Sep 30, 2023Observed: 1.1 ft at 1:30PM Sep 30, 2023Observed: 0.93 ft at 1:45PM Sep 30, 2023Observed: 0.72 ft at 2:00PM Sep 30, 2023Observed: 0.52 ft at 2:15PM Sep 30, 2023Observed: 0.33 ft at 2:30PM Sep 30, 2023Observed: 0.15 ft at 2:45PM Sep 30, 2023Observed: -0.02 ft at 3:00PM Sep 30, 2023Observed: -0.19 ft at 3:15PM Sep 30, 2023Observed: -0.33 ft at 3:30PM Sep 30, 2023Observed: -0.48 ft at 3:45PM Sep 30, 2023Observed: -0.63 ft at 4:00PM Sep 30, 2023Observed: -0.81 ft at 4:15PM Sep 30, 2023Observed: -0.97 ft at 4:30PM Sep 30, 2023Observed: -1.16 ft at 4:45PM Sep 30, 2023Observed: -1.35 ft at 5:00PM Sep 30, 2023Observed: -1.56 ft at 5:15PM Sep 30, 2023Observed: -1.78 ft at 5:30PM Sep 30, 2023Observed: -1.98 ft at 5:45PM Sep 30, 2023Observed: -2.16 ft at 6:00PM Sep 30, 2023Observed: -2.3 ft at 6:15PM Sep 30, 2023Observed: -2.38 ft at 6:30PM Sep 30, 2023Observed: -2.37 ft at 6:45PM Sep 30, 2023Observed: -2.28 ft at 7:00PM Sep 30, 2023Observed: -2.09 ft at 7:15PM Sep 30, 2023Observed: -1.83 ft at 7:30PM Sep 30, 2023Observed: -1.51 ft at 7:45PM Sep 30, 2023Observed: -1.16 ft at 8:00PM Sep 30, 2023Observed: -0.85 ft at 8:15PM Sep 30, 2023Observed: -0.61 ft at 8:30PM Sep 30, 2023Observed: -0.46 ft at 8:45PM Sep 30, 2023Observed: -0.33 ft at 9:00PM Sep 30, 2023Observed: -0.23 ft at 9:15PM Sep 30, 2023Observed: -0.14 ft at 9:30PM Sep 30, 2023Observed: -0.03 ft at 9:45PM Sep 30, 2023Observed: 0.07 ft at 10:00PM Sep 30, 2023Observed: 0.18 ft at 10:15PM Sep 30, 2023Observed: 0.28 ft at 10:30PM Sep 30, 2023Observed: 0.4 ft at 10:45PM Sep 30, 2023Observed: 0.51 ft at 11:00PM Sep 30, 2023Observed: 0.62 ft at 11:15PM Sep 30, 2023Observed: 0.7 ft at 11:30PM Sep 30, 2023Observed: 0.8 ft at 11:45PM Sep 30, 2023Observed: 0.87 ft at 12:00AM Oct 01, 2023Observed: 0.96 ft at 12:15AM Oct 01, 2023Observed: 1 ft at 12:30AM Oct 01, 2023Observed: 1.05 ft at 12:45AM Oct 01, 2023Observed: 1.05 ft at 1:00AM Oct 01, 2023Observed: 1.02 ft at 1:15AM Oct 01, 2023Observed: 0.97 ft at 1:30AM Oct 01, 2023Observed: 0.88 ft at 1:45AM Oct 01, 2023Observed: 0.73 ft at 2:00AM Oct 01, 2023Observed: 0.53 ft at 2:15AM Oct 01, 2023Observed: 0.33 ft at 2:30AM Oct 01, 2023Observed: 0.13 ft at 2:45AM Oct 01, 2023Observed: -0.06 ft at 3:00AM Oct 01, 2023Observed: -0.22 ft at 3:15AM Oct 01, 2023Observed: -0.37 ft at 3:30AM Oct 01, 2023Observed: -0.53 ft at 3:45AM Oct 01, 2023Observed: -0.67 ft at 4:00AM Oct 01, 2023Observed: -0.8 ft at 4:15AM Oct 01, 2023Observed: -0.98 ft at 4:30AM Oct 01, 2023Observed: -1.17 ft at 4:45AM Oct 01, 2023Observed: -1.36 ft at 5:00AM Oct 01, 2023Observed: -1.58 ft at 5:15AM Oct 01, 2023Observed: -1.81 ft at 5:30AM Oct 01, 2023Observed: -2.02 ft at 5:45AM Oct 01, 2023Observed: -2.2 ft at 6:00AM Oct 01, 2023Observed: -2.36 ft at 6:15AM Oct 01, 2023Observed: -2.46 ft at 6:30AM Oct 01, 2023Observed: -2.49 ft at 6:45AM Oct 01, 2023Observed: -2.42 ft at 7:00AM Oct 01, 2023Observed: -2.26 ft at 7:15AM Oct 01, 2023Observed: -2.01 ft at 7:30AM Oct 01, 2023Observed: -1.67 ft at 7:45AM Oct 01, 2023Observed: -1.3 ft at 8:00AM Oct 01, 2023Observed: -0.95 ft at 8:15AM Oct 01, 2023Observed: -0.69 ft at 8:30AM Oct 01, 2023Observed: -0.52 ft at 8:45AM Oct 01, 2023Observed: -0.39 ft at 9:00AM Oct 01, 2023Observed: -0.29 ft at 9:15AM Oct 01, 2023Observed: -0.19 ft at 9:30AM Oct 01, 2023Observed: -0.09 ft at 9:45AM Oct 01, 2023Observed: 0.02 ft at 10:00AM Oct 01, 2023Observed: 0.14 ft at 10:15AM Oct 01, 2023Observed: 0.25 ft at 10:30AM Oct 01, 2023Observed: 0.38 ft at 10:45AM Oct 01, 2023Observed: 0.51 ft at 11:00AM Oct 01, 2023Observed: 0.62 ft at 11:15AM Oct 01, 2023Observed: 0.73 ft at 11:30AM Oct 01, 2023Observed: 0.84 ft at 11:45AM Oct 01, 2023Observed: 0.95 ft at 12:00PM Oct 01, 2023Observed: 1.06 ft at 12:15PM Oct 01, 2023Observed: 1.16 ft at 12:30PM Oct 01, 2023Observed: 1.25 ft at 12:45PM Oct 01, 2023Observed: 1.28 ft at 1:00PM Oct 01, 2023Observed: 1.31 ft at 1:15PM Oct 01, 2023Observed: 1.31 ft at 1:30PM Oct 01, 2023Observed: 1.27 ft at 1:45PM Oct 01, 2023Observed: 1.21 ft at 2:00PM Oct 01, 2023Observed: 1.11 ft at 2:15PM Oct 01, 2023Observed: 0.96 ft at 2:30PM Oct 01, 2023Observed: 0.78 ft at 2:45PM Oct 01, 2023Observed: 0.59 ft at 3:00PM Oct 01, 2023Observed: 0.4 ft at 3:15PM Oct 01, 2023Observed: 0.22 ft at 3:30PM Oct 01, 2023Observed: 0.05 ft at 3:45PM Oct 01, 2023Observed: -0.11 ft at 4:00PM Oct 01, 2023Observed: -0.28 ft at 4:15PM Oct 01, 2023Observed: -0.42 ft at 4:30PM Oct 01, 2023Observed: -0.56 ft at 4:45PM Oct 01, 2023Observed: -0.71 ft at 5:00PM Oct 01, 2023Observed: -0.88 ft at 5:15PM Oct 01, 2023Observed: -1.05 ft at 5:30PM Oct 01, 2023Observed: -1.23 ft at 5:45PM Oct 01, 2023Observed: -1.44 ft at 6:00PM Oct 01, 2023Observed: -1.64 ft at 6:15PM Oct 01, 2023Observed: -1.86 ft at 6:30PM Oct 01, 2023Observed: -2.04 ft at 6:45PM Oct 01, 2023Observed: -2.2 ft at 7:00PM Oct 01, 2023Observed: -2.31 ft at 7:15PM Oct 01, 2023Observed: -2.34 ft at 7:30PM Oct 01, 2023Observed: -2.29 ft at 7:45PM Oct 01, 2023Observed: -2.14 ft at 8:00PM Oct 01, 2023Observed: -1.91 ft at 8:15PM Oct 01, 2023Observed: -1.62 ft at 8:30PM Oct 01, 2023Observed: -1.29 ft at 8:45PM Oct 01, 2023Observed: -0.99 ft at 9:00PM Oct 01, 2023Observed: -0.72 ft at 9:15PM Oct 01, 2023Observed: -0.54 ft at 9:30PM Oct 01, 2023Observed: -0.41 ft at 9:45PM Oct 01, 2023Observed: -0.3 ft at 10:00PM Oct 01, 2023Observed: -0.21 ft at 10:15PM Oct 01, 2023Observed: -0.11 ft at 10:30PM Oct 01, 2023Observed: -0.02 ft at 10:45PM Oct 01, 2023Observed: 0.07 ft at 11:00PM Oct 01, 2023Observed: 0.17 ft at 11:15PM Oct 01, 2023Observed: 0.28 ft at 11:30PM Oct 01, 2023Observed: 0.37 ft at 11:45PM Oct 01, 2023Observed: 0.47 ft at 12:00AM Oct 02, 2023Observed: 0.56 ft at 12:15AM Oct 02, 2023Observed: 0.64 ft at 12:30AM Oct 02, 2023Observed: 0.72 ft at 12:45AM Oct 02, 2023Observed: 0.79 ft at 1:00AM Oct 02, 2023Observed: 0.84 ft at 1:15AM Oct 02, 2023Observed: 0.86 ft at 1:30AM Oct 02, 2023Observed: 0.87 ft at 1:45AM Oct 02, 2023Observed: 0.84 ft at 2:00AM Oct 02, 2023Observed: 0.77 ft at 2:15AM Oct 02, 2023Observed: 0.68 ft at 2:30AM Oct 02, 2023Observed: 0.54 ft at 2:45AM Oct 02, 2023Observed: 0.34 ft at 3:00AM Oct 02, 2023Observed: 0.15 ft at 3:15AM Oct 02, 2023Observed: -0.05 ft at 3:30AM Oct 02, 2023Observed: -0.22 ft at 3:45AM Oct 02, 2023Observed: -0.38 ft at 4:00AM Oct 02, 2023Observed: -0.53 ft at 4:15AM Oct 02, 2023Observed: -0.67 ft at 4:30AM Oct 02, 2023Observed: -0.79 ft at 4:45AM Oct 02, 2023Observed: -0.96 ft at 5:00AM Oct 02, 2023Observed: -1.14 ft at 5:15AM Oct 02, 2023Observed: -1.31 ft at 5:30AM Oct 02, 2023Observed: -1.52 ft at 5:45AM Oct 02, 2023Observed: -1.73 ft at 6:00AM Oct 02, 2023Observed: -1.94 ft at 6:15AM Oct 02, 2023Observed: -2.14 ft at 6:30AM Oct 02, 2023Observed: -2.3 ft at 6:45AM Oct 02, 2023Observed: -2.43 ft at 7:00AM Oct 02, 2023Observed: -2.5 ft at 7:15AM Oct 02, 2023Observed: -2.51 ft at 7:30AM Oct 02, 2023Observed: -2.43 ft at 7:45AM Oct 02, 2023Observed: -2.27 ft at 8:00AM Oct 02, 2023Observed: -2.02 ft at 8:15AM Oct 02, 2023Observed: -1.69 ft at 8:30AM Oct 02, 2023Observed: -1.33 ft at 8:45AM Oct 02, 2023Observed: -0.99 ft at 9:00AM Oct 02, 2023Observed: -0.74 ft at 9:15AM Oct 02, 2023Observed: -0.57 ft at 9:30AM Oct 02, 2023Observed: -0.45 ft at 9:45AM Oct 02, 2023Observed: -0.35 ft at 10:00AM Oct 02, 2023Observed: -0.26 ft at 10:15AM Oct 02, 2023Observed: -0.16 ft at 10:30AM Oct 02, 2023Observed: -0.04 ft at 10:45AM Oct 02, 2023Observed: 0.04 ft at 11:00AM Oct 02, 2023Observed: 0.18 ft at 11:15AM Oct 02, 2023Observed: 0.3 ft at 11:30AM Oct 02, 2023Observed: 0.42 ft at 11:45AM Oct 02, 2023Observed: 0.54 ft at 12:00PM Oct 02, 2023Observed: 0.63 ft at 12:15PM Oct 02, 2023Observed: 0.75 ft at 12:30PM Oct 02, 2023Observed: 0.85 ft at 12:45PM Oct 02, 2023Observed: 0.96 ft at 1:00PM Oct 02, 2023Observed: 1.04 ft at 1:15PM Oct 02, 2023Observed: 1.11 ft at 1:30PM Oct 02, 2023Observed: 1.17 ft at 1:45PM Oct 02, 2023Observed: 1.2 ft at 2:00PM Oct 02, 2023Observed: 1.19 ft at 2:15PM Oct 02, 2023Observed: 1.16 ft at 2:30PM Oct 02, 2023Observed: 1.09 ft at 2:45PM Oct 02, 2023Observed: 1 ft at 3:00PM Oct 02, 2023Observed: 0.87 ft at 3:15PM Oct 02, 2023Observed: 0.68 ft at 3:30PM Oct 02, 2023Observed: 0.5 ft at 3:45PM Oct 02, 2023Observed: 0.32 ft at 4:00PM Oct 02, 2023Observed: 0.13 ft at 4:15PM Oct 02, 2023Observed: -0.04 ft at 4:30PM Oct 02, 2023Observed: -0.2 ft at 4:45PM Oct 02, 2023Observed: -0.36 ft at 5:00PM Oct 02, 2023Observed: -0.51 ft at 5:15PM Oct 02, 2023Observed: -0.65 ft at 5:30PM Oct 02, 2023Observed: -0.8 ft at 5:45PM Oct 02, 2023Observed: -0.96 ft at 6:00PM Oct 02, 2023Observed: -1.14 ft at 6:15PM Oct 02, 2023Observed: -1.32 ft at 6:30PM Oct 02, 2023Observed: -1.5 ft at 6:45PM Oct 02, 2023Observed: -1.71 ft at 7:00PM Oct 02, 2023Observed: -1.91 ft at 7:15PM Oct 02, 2023Observed: -2.1 ft at 7:30PM Oct 02, 2023Observed: -2.24 ft at 7:45PM Oct 02, 2023Observed: -2.32 ft at 8:00PM Oct 02, 2023Observed: -2.33 ft at 8:15PM Oct 02, 2023Observed: -2.27 ft at 8:30PM Oct 02, 2023Observed: -2.13 ft at 8:45PM Oct 02, 2023Observed: -1.92 ft at 9:00PM Oct 02, 2023Observed: -1.66 ft at 9:15PM Oct 02, 2023Observed: -1.36 ft at 9:30PM Oct 02, 2023Observed: -1.08 ft at 9:45PM Oct 02, 2023Observed: -0.85 ft at 10:00PM Oct 02, 2023Observed: -0.66 ft at 10:15PM Oct 02, 2023Observed: -0.53 ft at 10:30PM Oct 02, 2023Observed: -0.43 ft at 10:45PM Oct 02, 2023Observed: -0.33 ft at 11:00PM Oct 02, 2023Observed: -0.24 ft at 11:15PM Oct 02, 2023Observed: -0.16 ft at 11:30PM Oct 02, 2023Observed: -0.06 ft at 11:45PM Oct 02, 2023Observed: 0.02 ft at 12:00AM Oct 03, 2023Observed: 0.11 ft at 12:15AM Oct 03, 2023Observed: 0.21 ft at 12:30AM Oct 03, 2023Observed: 0.3 ft at 12:45AM Oct 03, 2023Observed: 0.39 ft at 1:00AM Oct 03, 2023Observed: 0.47 ft at 1:15AM Oct 03, 2023Observed: 0.54 ft at 1:30AM Oct 03, 2023Observed: 0.61 ft at 1:45AM Oct 03, 2023Observed: 0.65 ft at 2:00AM Oct 03, 2023Observed: 0.69 ft at 2:15AM Oct 03, 2023Observed: 0.71 ft at 2:30AM Oct 03, 2023Observed: 0.7 ft at 2:45AM Oct 03, 2023Observed: 0.64 ft at 3:00AM Oct 03, 2023Observed: 0.55 ft at 3:15AM Oct 03, 2023Observed: 0.41 ft at 3:30AM Oct 03, 2023Observed: 0.22 ft at 3:45AM Oct 03, 2023Observed: 0.02 ft at 4:00AM Oct 03, 2023Observed: -0.18 ft at 4:15AM Oct 03, 2023Observed: -0.36 ft at 4:30AM Oct 03, 2023Observed: -0.52 ft at 4:45AM Oct 03, 2023Observed: -0.66 ft at 5:00AM Oct 03, 2023Observed: -0.79 ft at 5:15AM Oct 03, 2023Observed: -0.93 ft at 5:30AM Oct 03, 2023Observed: -1.1 ft at 5:45AM Oct 03, 2023Observed: -1.27 ft at 6:00AM Oct 03, 2023Observed: -1.45 ft at 6:15AM Oct 03, 2023Observed: -1.64 ft at 6:30AM Oct 03, 2023Observed: -1.85 ft at 6:45AM Oct 03, 2023Observed: -2.05 ft at 7:00AM Oct 03, 2023Observed: -2.24 ft at 7:15AM Oct 03, 2023Observed: -2.38 ft at 7:30AM Oct 03, 2023Observed: -2.5 ft at 7:45AM Oct 03, 2023Observed: -2.58 ft at 8:00AM Oct 03, 2023Observed: -2.61 ft at 8:15AM Oct 03, 2023Observed: -2.57 ft at 8:30AM Oct 03, 2023Observed: -2.45 ft at 8:45AM Oct 03, 2023Observed: -2.25 ft at 9:00AM Oct 03, 2023Observed: -1.94 ft at 9:15AM Oct 03, 2023Observed: -1.61 ft at 9:30AM Oct 03, 2023Observed: -1.26 ft at 9:45AM Oct 03, 2023Observed: -0.95 ft at 10:00AM Oct 03, 2023Observed: -0.72 ft at 10:15AM Oct 03, 2023Observed: -0.57 ft at 10:30AM Oct 03, 2023Observed: -0.47 ft at 10:45AM Oct 03, 2023Observed: -0.38 ft at 11:00AM Oct 03, 2023Observed: -0.28 ft at 11:15AM Oct 03, 2023Observed: -0.19 ft at 11:30AM Oct 03, 2023Observed: -0.09 ft at 11:45AM Oct 03, 2023Observed: 0.03 ft at 12:00PM Oct 03, 2023Observed: 0.15 ft at 12:15PM Oct 03, 2023Observed: 0.25 ft at 12:30PM Oct 03, 2023Observed: 0.37 ft at 12:45PM Oct 03, 2023Observed: 0.47 ft at 1:00PM Oct 03, 2023Observed: 0.58 ft at 1:15PM Oct 03, 2023Observed: 0.7 ft at 1:30PM Oct 03, 2023Observed: 0.79 ft at 1:45PM Oct 03, 2023Observed: 0.89 ft at 2:00PM Oct 03, 2023Observed: 0.96 ft at 2:15PM Oct 03, 2023Observed: 1.02 ft at 2:30PM Oct 03, 2023Observed: 1.05 ft at 2:45PM Oct 03, 2023Observed: 1.06 ft at 3:00PM Oct 03, 2023Observed: 1.05 ft at 3:15PM Oct 03, 2023Observed: 0.99 ft at 3:30PM Oct 03, 2023Observed: 0.92 ft at 3:45PM Oct 03, 2023Observed: 0.81 ft at 4:00PM Oct 03, 2023Observed: 0.67 ft at 4:15PM Oct 03, 2023Observed: 0.49 ft at 4:30PM Oct 03, 2023Observed: 0.31 ft at 4:45PM Oct 03, 2023Observed: 0.13 ft at 5:00PM Oct 03, 2023Observed: -0.04 ft at 5:15PM Oct 03, 2023Observed: -0.2 ft at 5:30PM Oct 03, 2023Observed: -0.34 ft at 5:45PM Oct 03, 2023Observed: -0.48 ft at 6:00PM Oct 03, 2023Observed: -0.62 ft at 6:15PM Oct 03, 2023Observed: -0.75 ft at 6:30PM Oct 03, 2023Observed: -0.89 ft at 6:45PM Oct 03, 2023Observed: -1.04 ft at 7:00PM Oct 03, 2023Observed: -1.21 ft at 7:15PM Oct 03, 2023Observed: -1.38 ft at 7:30PM Oct 03, 2023Observed: -1.54 ft at 7:45PM Oct 03, 2023Observed: -1.74 ft at 8:00PM Oct 03, 2023Observed: -1.91 ft at 8:15PM Oct 03, 2023Observed: -2.04 ft at 8:30PM Oct 03, 2023Observed: -2.14 ft at 8:45PM Oct 03, 2023Observed: -2.17 ft at 9:00PM Oct 03, 2023Observed: -2.14 ft at 9:15PM Oct 03, 2023Observed: -2.05 ft at 9:30PM Oct 03, 2023Observed: -1.9 ft at 9:45PM Oct 03, 2023Observed: -1.7 ft at 10:00PM Oct 03, 2023Observed: -1.43 ft at 10:15PM Oct 03, 2023Observed: -1.15 ft at 10:30PM Oct 03, 2023Observed: -0.88 ft at 10:45PM Oct 03, 2023Observed: -0.7 ft at 11:00PM Oct 03, 2023Observed: -0.57 ft at 11:15PM Oct 03, 2023Observed: -0.48 ft at 11:30PM Oct 03, 2023Observed: -0.39 ft at 11:45PM Oct 03, 2023Observed: -0.3 ft at 12:00AM Oct 04, 2023Observed: -0.22 ft at 12:15AM Oct 04, 2023Observed: -0.13 ft at 12:30AM Oct 04, 2023Observed: -0.04 ft at 12:45AM Oct 04, 2023Observed: 0.04 ft at 1:00AM Oct 04, 2023Observed: 0.13 ft at 1:15AM Oct 04, 2023Observed: 0.22 ft at 1:30AM Oct 04, 2023Observed: 0.3 ft at 1:45AM Oct 04, 2023Observed: 0.37 ft at 2:00AM Oct 04, 2023Observed: 0.43 ft at 2:15AM Oct 04, 2023Observed: 0.49 ft at 2:30AM Oct 04, 2023Observed: 0.52 ft at 2:45AM Oct 04, 2023Observed: 0.53 ft at 3:00AM Oct 04, 2023Observed: 0.53 ft at 3:15AM Oct 04, 2023Observed: 0.5 ft at 3:30AM Oct 04, 2023Observed: 0.44 ft at 3:45AM Oct 04, 2023Observed: 0.35 ft at 4:00AM Oct 04, 2023Observed: 0.19 ft at 4:15AM Oct 04, 2023Observed: 0 ft at 4:30AM Oct 04, 2023Observed: -0.19 ft at 4:45AM Oct 04, 2023Observed: -0.37 ft at 5:00AM Oct 04, 2023Observed: -0.52 ft at 5:15AM Oct 04, 2023Observed: -0.67 ft at 5:30AM Oct 04, 2023Observed: -0.8 ft at 5:45AM Oct 04, 2023Observed: -0.92 ft at 6:00AM Oct 04, 2023Observed: -1.06 ft at 6:15AM Oct 04, 2023Observed: -1.22 ft at 6:30AM Oct 04, 2023Observed: -1.39 ft at 6:45AM Oct 04, 2023Observed: -1.57 ft at 7:00AM Oct 04, 2023Observed: -1.77 ft at 7:15AM Oct 04, 2023Observed: -1.96 ft at 7:30AM Oct 04, 2023Observed: -2.14 ft at 7:45AM Oct 04, 2023Observed: -2.29 ft at 8:00AM Oct 04, 2023Observed: -2.42 ft at 8:15AM Oct 04, 2023Observed: -2.53 ft at 8:30AM Oct 04, 2023Observed: -2.59 ft at 8:45AM Oct 04, 2023Observed: -2.62 ft at 9:00AM Oct 04, 2023Observed: -2.58 ft at 9:15AM Oct 04, 2023Observed: -2.48 ft at 9:30AM Oct 04, 2023Observed: -2.31 ft at 9:45AM Oct 04, 2023Observed: -2.06 ft at 10:00AM Oct 04, 2023Observed: -1.74 ft at 10:15AM Oct 04, 2023Observed: -1.42 ft at 10:30AM Oct 04, 2023Observed: -1.12 ft at 10:45AM Oct 04, 2023Observed: -0.86 ft at 11:00AM Oct 04, 2023Observed: -0.69 ft at 11:15AM Oct 04, 2023Observed: -0.58 ft at 11:30AM Oct 04, 2023Observed: -0.49 ft at 11:45AM Oct 04, 2023Observed: -0.4 ft at 12:00PM Oct 04, 2023Observed: -0.3 ft at 12:15PM Oct 04, 2023Observed: -0.21 ft at 12:30PM Oct 04, 2023Observed: -0.1 ft at 12:45PM Oct 04, 2023Observed: 0 ft at 1:00PM Oct 04, 2023Observed: 0.1 ft at 1:15PM Oct 04, 2023Observed: 0.2 ft at 1:30PM Oct 04, 2023Observed: 0.3 ft at 1:45PM Oct 04, 2023Observed: 0.39 ft at 2:00PM Oct 04, 2023Observed: 0.49 ft at 2:15PM Oct 04, 2023Observed: 0.57 ft at 2:30PM Oct 04, 2023Observed: 0.65 ft at 2:45PM Oct 04, 2023Observed: 0.74 ft at 3:00PM Oct 04, 2023Observed: 0.79 ft at 3:15PM Oct 04, 2023Observed: 0.84 ft at 3:30PM Oct 04, 2023Observed: 0.85 ft at 3:45PM Oct 04, 2023Observed: 0.84 ft at 4:00PM Oct 04, 2023Observed: 0.81 ft at 4:15PM Oct 04, 2023Observed: 0.76 ft at 4:30PM Oct 04, 2023Observed: 0.67 ft at 4:45PM Oct 04, 2023Observed: 0.54 ft at 5:00PM Oct 04, 2023Observed: 0.36 ft at 5:15PM Oct 04, 2023KLNG1(plotting HGIRG) Graph Created (6:39PM Oct 4, 2023)ObservedLatest observed value: 0.36 ft at 5:15 PM EDT 4-Oct-2023. Flood Stage is 1 ft
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About this graph
Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Water levels are referenced to the Mean Higher High Water (MHHW) Datum. This datum can be used to approximate sea water inundation of normally dry ground near the coast. For specific impacts, please refer to the statements on this page.

NOTE: Forecasts are not available for the St. Marys River at Interstate 95 (in MHHW). Only observed stages are available for this point.

Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 3
Moderate Flood Stage: 1.5
Flood Stage: 1
Action Stage: 0.5
Low Stage (in feet): -6.5

Historic Crests
(1) 5.07 ft on 09/10/1964
(2) 2.79 ft on 10/07/2016
(3) 1.90 ft on 09/21/2020
(4) 1.79 ft on 09/20/2020
(5) 1.77 ft on 11/07/2021
(6) 1.76 ft on 11/06/2021
(7) 1.71 ft on 05/28/2012
(8) 1.67 ft on 09/21/2020
(9) 1.66 ft on 11/08/2021
(10) 1.64 ft on 04/10/2023
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 1.01 ft on 08/03/2023
(2) 1.15 ft on 06/06/2023
(3) 1.54 ft on 06/05/2023
(4) 1.12 ft on 06/03/2023
(5) 1.01 ft on 06/02/2023
(6) 1.25 ft on 04/11/2023
(7) 1.64 ft on 04/10/2023
(8) 1.10 ft on 04/09/2023
(9) 1.15 ft on 12/21/2022
(10) 1.26 ft on 09/29/2022
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -7.51 ft on 03/06/2013
(2) -7.34 ft on 01/03/2011
(3) -7.32 ft on 03/26/2013
(4) -7.29 ft on 12/22/2018
(5) -7.27 ft on 01/26/2011
Show More Low Water Records

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
3 EXTENSIVE INUNDATION OF STRUCTURES AND ROADS IN THE AREA. EVACUATIONS OF PEOPLE OR TRANSFER OF PROPERTY TO HIGHER GROUND IS LIKELY.
1.5 SOME INUNDATION OF STRUCTURES AND ROADS ALONG THE RIVER BASIN IS EXPECTED. EVACUATIONS OF PEOPLE OR PROPERTY TO HIGHER GROUND IS POSSIBLE.
1 FLOODING OF LOW LYING ROADS AND CAMPGROUNDS POSSIBLE. SOME BOAT RAMPS AND DOCKS ALONG THE RIVER MAY BEGIN TO FLOOD.
0.5 SHOULD WATER LEVELS CONTINUE RISING, PREPARATIONS TO PROTECT PROPERTY SHOULD BEGIN.
About This Location Collapse

Latitude: 30.743889° N, Longitude: 81.654444° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 1 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 2.47 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 Mean Higher High Water - Used to approximate inundation

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
Jacksonville Weather Forecast Office
13701 Fang Drive
Jacksonville, FL 32218
(904) 741-4370
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