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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS) at a repurposed https://water.noaa.gov. A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id: https://preview.water.noaa.gov/gauges/SSSSS.

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

Please visit https://www.weather.gov/owp/operations for more information.



Hydrograph River at a Glance Download
Big Creek near Alpharetta Stage (ft)Flow (kcfs)Observed: 3.05 ft at 10:15PM Mar 13, 2024Observed: 3.04 ft at 10:30PM Mar 13, 2024Observed: 3.04 ft at 10:45PM Mar 13, 2024Observed: 3.05 ft at 11:00PM Mar 13, 2024Observed: 3.04 ft at 11:15PM Mar 13, 2024Observed: 3.04 ft at 11:30PM Mar 13, 2024Observed: 3.04 ft at 11:45PM Mar 13, 2024Observed: 3.04 ft at 12:00AM Mar 14, 2024Observed: 3.04 ft at 12:15AM Mar 14, 2024Observed: 3.04 ft at 12:30AM Mar 14, 2024Observed: 3.04 ft at 12:45AM Mar 14, 2024Observed: 3.04 ft at 1:00AM Mar 14, 2024Observed: 3.03 ft at 1:15AM Mar 14, 2024Observed: 3.03 ft at 1:30AM Mar 14, 2024Observed: 3.03 ft at 1:45AM Mar 14, 2024Observed: 3.03 ft at 2:00AM Mar 14, 2024Observed: 3.03 ft at 2:15AM Mar 14, 2024Observed: 3.03 ft at 2:30AM Mar 14, 2024Observed: 3.02 ft at 2:45AM Mar 14, 2024Observed: 3.03 ft at 3:00AM Mar 14, 2024Observed: 3.02 ft at 3:15AM Mar 14, 2024Observed: 3.02 ft at 3:30AM Mar 14, 2024Observed: 3.02 ft at 3:45AM Mar 14, 2024Observed: 3.02 ft at 4:00AM Mar 14, 2024Observed: 3.02 ft at 4:15AM Mar 14, 2024Observed: 3.02 ft at 4:30AM Mar 14, 2024Observed: 3.01 ft at 4:45AM Mar 14, 2024Observed: 3.02 ft at 5:00AM Mar 14, 2024Observed: 3.02 ft at 5:15AM Mar 14, 2024Observed: 3.02 ft at 5:30AM Mar 14, 2024Observed: 3.02 ft at 5:45AM Mar 14, 2024Observed: 3.01 ft at 6:00AM Mar 14, 2024Observed: 3.01 ft at 6:15AM Mar 14, 2024Observed: 3.01 ft at 6:30AM Mar 14, 2024Observed: 3.01 ft at 6:45AM Mar 14, 2024Observed: 3.01 ft at 7:00AM Mar 14, 2024Observed: 3.01 ft at 7:15AM Mar 14, 2024Observed: 3.01 ft at 7:30AM Mar 14, 2024Observed: 3.01 ft at 7:45AM Mar 14, 2024Observed: 3.01 ft at 8:00AM Mar 14, 2024Observed: 3.01 ft at 8:15AM Mar 14, 2024Observed: 3.01 ft at 8:30AM Mar 14, 2024Observed: 3.01 ft at 8:45AM Mar 14, 2024Observed: 3.01 ft at 9:00AM Mar 14, 2024Observed: 3.01 ft at 9:15AM Mar 14, 2024Observed: 3.01 ft at 9:30AM Mar 14, 2024Observed: 3 ft at 9:45AM Mar 14, 2024Observed: 3.01 ft at 10:00AM Mar 14, 2024Observed: 3 ft at 10:15AM Mar 14, 2024Observed: 3 ft at 10:30AM Mar 14, 2024Observed: 2.99 ft at 10:45AM Mar 14, 2024Observed: 2.99 ft at 11:00AM Mar 14, 2024Observed: 2.99 ft at 11:15AM Mar 14, 2024Observed: 2.98 ft at 11:30AM Mar 14, 2024Observed: 2.98 ft at 11:45AM Mar 14, 2024Observed: 2.98 ft at 12:00PM Mar 14, 2024Observed: 2.97 ft at 12:15PM Mar 14, 2024Observed: 2.97 ft at 12:30PM Mar 14, 2024Observed: 2.97 ft at 12:45PM Mar 14, 2024Observed: 2.97 ft at 1:00PM Mar 14, 2024Observed: 2.96 ft at 1:15PM Mar 14, 2024Observed: 2.96 ft at 1:30PM Mar 14, 2024Observed: 2.96 ft at 1:45PM Mar 14, 2024Observed: 2.96 ft at 2:00PM Mar 14, 2024Observed: 2.96 ft at 2:15PM Mar 14, 2024Observed: 2.96 ft at 2:30PM Mar 14, 2024Observed: 2.95 ft at 2:45PM Mar 14, 2024Observed: 2.95 ft at 3:00PM Mar 14, 2024Observed: 2.95 ft at 3:15PM Mar 14, 2024Observed: 2.95 ft at 3:30PM Mar 14, 2024Observed: 2.95 ft at 3:45PM Mar 14, 2024Observed: 2.95 ft at 4:00PM Mar 14, 2024Observed: 2.95 ft at 4:15PM Mar 14, 2024Observed: 2.95 ft at 4:30PM Mar 14, 2024Observed: 2.95 ft at 4:45PM Mar 14, 2024Observed: 2.95 ft at 5:00PM Mar 14, 2024Observed: 2.95 ft at 5:15PM Mar 14, 2024Observed: 2.95 ft at 5:30PM Mar 14, 2024Observed: 2.95 ft at 5:45PM Mar 14, 2024Observed: 2.95 ft at 6:00PM Mar 14, 2024Observed: 2.95 ft at 6:15PM Mar 14, 2024Observed: 2.95 ft at 6:30PM Mar 14, 2024Observed: 2.95 ft at 6:45PM Mar 14, 2024Observed: 2.95 ft at 7:00PM Mar 14, 2024Observed: 2.95 ft at 7:15PM Mar 14, 2024Observed: 2.96 ft at 7:30PM Mar 14, 2024Observed: 2.96 ft at 7:45PM Mar 14, 2024Observed: 2.96 ft at 8:00PM Mar 14, 2024Observed: 2.96 ft at 8:15PM Mar 14, 2024Observed: 2.96 ft at 8:30PM Mar 14, 2024Observed: 2.96 ft at 8:45PM Mar 14, 2024Observed: 2.96 ft at 9:00PM Mar 14, 2024Observed: 2.96 ft at 9:15PM Mar 14, 2024Observed: 2.97 ft at 9:30PM Mar 14, 2024Observed: 2.97 ft at 9:45PM Mar 14, 2024Observed: 2.97 ft at 10:00PM Mar 14, 2024Observed: 2.97 ft at 10:15PM Mar 14, 2024Observed: 2.97 ft at 10:30PM Mar 14, 2024Observed: 2.97 ft at 10:45PM Mar 14, 2024Observed: 2.97 ft at 11:00PM Mar 14, 2024Observed: 2.97 ft at 11:15PM Mar 14, 2024Observed: 2.97 ft at 11:30PM Mar 14, 2024Observed: 2.97 ft at 11:45PM Mar 14, 2024Observed: 2.97 ft at 12:00AM Mar 15, 2024Observed: 2.97 ft at 12:15AM Mar 15, 2024Observed: 2.97 ft at 12:30AM Mar 15, 2024Observed: 2.96 ft at 12:45AM Mar 15, 2024Observed: 2.96 ft at 1:00AM Mar 15, 2024Observed: 2.96 ft at 1:15AM Mar 15, 2024Observed: 2.96 ft at 1:30AM Mar 15, 2024Observed: 2.96 ft at 1:45AM Mar 15, 2024Observed: 2.96 ft at 2:00AM Mar 15, 2024Observed: 2.96 ft at 2:15AM Mar 15, 2024Observed: 2.96 ft at 2:30AM Mar 15, 2024Observed: 2.95 ft at 2:45AM Mar 15, 2024Observed: 2.95 ft at 3:00AM Mar 15, 2024Observed: 2.95 ft at 3:15AM Mar 15, 2024Observed: 2.95 ft at 3:30AM Mar 15, 2024Observed: 2.95 ft at 3:45AM Mar 15, 2024Observed: 2.95 ft at 4:00AM Mar 15, 2024Observed: 2.95 ft at 4:15AM Mar 15, 2024Observed: 2.95 ft at 4:30AM Mar 15, 2024Observed: 2.95 ft at 4:45AM Mar 15, 2024Observed: 2.95 ft at 5:00AM Mar 15, 2024Observed: 2.95 ft at 5:15AM Mar 15, 2024Observed: 2.95 ft at 5:30AM Mar 15, 2024Observed: 2.94 ft at 5:45AM Mar 15, 2024Observed: 2.95 ft at 6:00AM Mar 15, 2024Observed: 2.95 ft at 6:15AM Mar 15, 2024Observed: 2.95 ft at 6:30AM Mar 15, 2024Observed: 2.94 ft at 6:45AM Mar 15, 2024Observed: 2.94 ft at 7:00AM Mar 15, 2024Observed: 2.94 ft at 7:15AM Mar 15, 2024Observed: 2.94 ft at 7:30AM Mar 15, 2024Observed: 2.94 ft at 7:45AM Mar 15, 2024Observed: 2.94 ft at 8:00AM Mar 15, 2024Observed: 2.94 ft at 8:15AM Mar 15, 2024Observed: 2.94 ft at 8:30AM Mar 15, 2024Observed: 2.94 ft at 8:45AM Mar 15, 2024Observed: 2.94 ft at 9:00AM Mar 15, 2024Observed: 2.94 ft at 9:15AM Mar 15, 2024Observed: 2.94 ft at 9:30AM Mar 15, 2024Observed: 2.94 ft at 9:45AM Mar 15, 2024Observed: 2.94 ft at 10:00AM Mar 15, 2024Observed: 2.93 ft at 10:15AM Mar 15, 2024Observed: 2.94 ft at 10:30AM Mar 15, 2024Observed: 2.94 ft at 10:45AM Mar 15, 2024Observed: 2.96 ft at 11:00AM Mar 15, 2024Observed: 2.98 ft at 11:15AM Mar 15, 2024Observed: 3 ft at 11:30AM Mar 15, 2024Observed: 3.05 ft at 11:45AM Mar 15, 2024Observed: 3.12 ft at 12:00PM Mar 15, 2024Observed: 3.18 ft at 12:15PM Mar 15, 2024Observed: 3.23 ft at 12:30PM Mar 15, 2024Observed: 3.27 ft at 12:45PM Mar 15, 2024Observed: 3.31 ft at 1:00PM Mar 15, 2024Observed: 3.35 ft at 1:15PM Mar 15, 2024Observed: 3.39 ft at 1:30PM Mar 15, 2024Observed: 3.42 ft at 1:45PM Mar 15, 2024Observed: 3.44 ft at 2:00PM Mar 15, 2024Observed: 3.46 ft at 2:15PM Mar 15, 2024Observed: 3.47 ft at 2:30PM Mar 15, 2024Observed: 3.46 ft at 2:45PM Mar 15, 2024Observed: 3.47 ft at 3:00PM Mar 15, 2024Observed: 3.47 ft at 3:15PM Mar 15, 2024Observed: 3.47 ft at 3:30PM Mar 15, 2024Observed: 3.47 ft at 3:45PM Mar 15, 2024Observed: 3.47 ft at 4:00PM Mar 15, 2024Observed: 3.48 ft at 4:15PM Mar 15, 2024Observed: 3.48 ft at 4:30PM Mar 15, 2024Observed: 3.48 ft at 4:45PM Mar 15, 2024Observed: 3.48 ft at 5:00PM Mar 15, 2024Observed: 3.48 ft at 5:15PM Mar 15, 2024Observed: 3.47 ft at 5:30PM Mar 15, 2024Observed: 3.47 ft at 5:45PM Mar 15, 2024Observed: 3.47 ft at 6:00PM Mar 15, 2024Observed: 3.46 ft at 6:15PM Mar 15, 2024Observed: 3.47 ft at 6:30PM Mar 15, 2024Observed: 3.47 ft at 6:45PM Mar 15, 2024Observed: 3.48 ft at 7:00PM Mar 15, 2024Observed: 3.49 ft at 7:15PM Mar 15, 2024Observed: 3.5 ft at 7:30PM Mar 15, 2024Observed: 3.51 ft at 7:45PM Mar 15, 2024Observed: 3.53 ft at 8:00PM Mar 15, 2024Observed: 3.55 ft at 8:15PM Mar 15, 2024Observed: 3.58 ft at 8:30PM Mar 15, 2024Observed: 3.6 ft at 8:45PM Mar 15, 2024Observed: 3.62 ft at 9:00PM Mar 15, 2024Observed: 3.65 ft at 9:15PM Mar 15, 2024Observed: 3.67 ft at 9:30PM Mar 15, 2024Observed: 3.68 ft at 9:45PM Mar 15, 2024Observed: 3.7 ft at 10:00PM Mar 15, 2024Highest Observation: 3.71 ft at 10:15PM Mar 15, 2024Observed: 3.7 ft at 10:30PM Mar 15, 2024Highest Observation: 3.71 ft at 10:45PM Mar 15, 2024Observed: 3.7 ft at 11:00PM Mar 15, 2024Observed: 3.69 ft at 11:15PM Mar 15, 2024Observed: 3.69 ft at 11:30PM Mar 15, 2024Observed: 3.67 ft at 11:45PM Mar 15, 2024Observed: 3.66 ft at 12:00AM Mar 16, 2024Observed: 3.65 ft at 12:15AM Mar 16, 2024Observed: 3.63 ft at 12:30AM Mar 16, 2024Observed: 3.61 ft at 12:45AM Mar 16, 2024Observed: 3.59 ft at 1:00AM Mar 16, 2024Observed: 3.58 ft at 1:15AM Mar 16, 2024Observed: 3.56 ft at 1:30AM Mar 16, 2024Observed: 3.54 ft at 1:45AM Mar 16, 2024Observed: 3.52 ft at 2:00AM Mar 16, 2024Observed: 3.5 ft at 2:15AM Mar 16, 2024Observed: 3.49 ft at 2:30AM Mar 16, 2024Observed: 3.46 ft at 2:45AM Mar 16, 2024Observed: 3.45 ft at 3:00AM Mar 16, 2024Observed: 3.43 ft at 3:15AM Mar 16, 2024Observed: 3.41 ft at 3:30AM Mar 16, 2024Observed: 3.4 ft at 3:45AM Mar 16, 2024Observed: 3.38 ft at 4:00AM Mar 16, 2024Observed: 3.37 ft at 4:15AM Mar 16, 2024Observed: 3.35 ft at 4:30AM Mar 16, 2024Observed: 3.34 ft at 4:45AM Mar 16, 2024Observed: 3.33 ft at 5:00AM Mar 16, 2024Observed: 3.31 ft at 5:15AM Mar 16, 2024Observed: 3.3 ft at 5:30AM Mar 16, 2024Observed: 3.29 ft at 5:45AM Mar 16, 2024Observed: 3.28 ft at 6:00AM Mar 16, 2024Observed: 3.26 ft at 6:15AM Mar 16, 2024Observed: 3.26 ft at 6:30AM Mar 16, 2024Observed: 3.24 ft at 6:45AM Mar 16, 2024Observed: 3.23 ft at 7:00AM Mar 16, 2024Observed: 3.22 ft at 7:15AM Mar 16, 2024Observed: 3.21 ft at 7:30AM Mar 16, 2024Observed: 3.2 ft at 7:45AM Mar 16, 2024Observed: 3.19 ft at 8:00AM Mar 16, 2024Observed: 3.19 ft at 8:15AM Mar 16, 2024Observed: 3.18 ft at 8:30AM Mar 16, 2024Observed: 3.17 ft at 8:45AM Mar 16, 2024Observed: 3.17 ft at 9:00AM Mar 16, 2024Observed: 3.16 ft at 9:15AM Mar 16, 2024Observed: 3.15 ft at 9:30AM Mar 16, 2024Observed: 3.14 ft at 9:45AM Mar 16, 2024Observed: 3.14 ft at 10:00AM Mar 16, 2024Observed: 3.14 ft at 10:15AM Mar 16, 2024Observed: 3.13 ft at 10:30AM Mar 16, 2024Observed: 3.12 ft at 10:45AM Mar 16, 2024Observed: 3.12 ft at 11:00AM Mar 16, 2024Observed: 3.12 ft at 11:15AM Mar 16, 2024Observed: 3.11 ft at 11:30AM Mar 16, 2024Observed: 3.11 ft at 11:45AM Mar 16, 2024Observed: 3.11 ft at 12:00PM Mar 16, 2024Observed: 3.11 ft at 12:15PM Mar 16, 2024Observed: 3.1 ft at 12:30PM Mar 16, 2024Observed: 3.1 ft at 12:45PM Mar 16, 2024Observed: 3.09 ft at 1:00PM Mar 16, 2024Observed: 3.09 ft at 1:15PM Mar 16, 2024Observed: 3.08 ft at 1:30PM Mar 16, 2024Observed: 3.08 ft at 1:45PM Mar 16, 2024Observed: 3.07 ft at 2:00PM Mar 16, 2024Observed: 3.07 ft at 2:15PM Mar 16, 2024Observed: 3.06 ft at 2:30PM Mar 16, 2024Observed: 3.06 ft at 2:45PM Mar 16, 2024Observed: 3.05 ft at 3:00PM Mar 16, 2024Observed: 3.04 ft at 3:15PM Mar 16, 2024Observed: 3.03 ft at 3:30PM Mar 16, 2024Observed: 3.02 ft at 3:45PM Mar 16, 2024Observed: 3.02 ft at 4:00PM Mar 16, 2024Observed: 3.01 ft at 4:15PM Mar 16, 2024Observed: 3.01 ft at 4:30PM Mar 16, 2024Observed: 3 ft at 4:45PM Mar 16, 2024Observed: 3 ft at 5:00PM Mar 16, 2024Observed: 3 ft at 5:15PM Mar 16, 2024Observed: 2.99 ft at 5:30PM Mar 16, 2024Observed: 2.99 ft at 5:45PM Mar 16, 2024Observed: 2.99 ft at 6:00PM Mar 16, 2024Observed: 2.99 ft at 6:15PM Mar 16, 2024Observed: 2.99 ft at 6:30PM Mar 16, 2024Observed: 2.99 ft at 6:45PM Mar 16, 2024Observed: 2.98 ft at 7:00PM Mar 16, 2024Observed: 2.99 ft at 7:15PM Mar 16, 2024Observed: 2.99 ft at 7:30PM Mar 16, 2024Observed: 2.98 ft at 7:45PM Mar 16, 2024Observed: 2.98 ft at 8:00PM Mar 16, 2024Observed: 2.98 ft at 8:15PM Mar 16, 2024Observed: 2.98 ft at 8:30PM Mar 16, 2024Observed: 2.98 ft at 8:45PM Mar 16, 2024Observed: 2.98 ft at 9:00PM Mar 16, 2024Observed: 2.98 ft at 9:15PM Mar 16, 2024Observed: 2.97 ft at 9:30PM Mar 16, 2024Observed: 2.97 ft at 9:45PM Mar 16, 2024Observed: 2.97 ft at 10:00PM Mar 16, 2024Observed: 2.97 ft at 10:15PM Mar 16, 2024Observed: 2.97 ft at 10:30PM Mar 16, 2024Observed: 2.97 ft at 10:45PM Mar 16, 2024Observed: 2.97 ft at 11:00PM Mar 16, 2024Observed: 2.97 ft at 11:15PM Mar 16, 2024Observed: 2.97 ft at 11:30PM Mar 16, 2024Observed: 2.97 ft at 11:45PM Mar 16, 2024Observed: 2.96 ft at 12:00AM Mar 17, 2024Observed: 2.97 ft at 12:15AM Mar 17, 2024Observed: 2.97 ft at 12:30AM Mar 17, 2024Observed: 2.96 ft at 12:45AM Mar 17, 2024Observed: 2.96 ft at 1:00AM Mar 17, 2024Observed: 2.96 ft at 1:15AM Mar 17, 2024Observed: 2.96 ft at 1:30AM Mar 17, 2024Observed: 2.95 ft at 1:45AM Mar 17, 2024Observed: 2.95 ft at 2:00AM Mar 17, 2024Observed: 2.95 ft at 2:15AM Mar 17, 2024Observed: 2.95 ft at 2:30AM Mar 17, 2024Observed: 2.94 ft at 2:45AM Mar 17, 2024Observed: 2.94 ft at 3:00AM Mar 17, 2024Observed: 2.94 ft at 3:15AM Mar 17, 2024Observed: 2.94 ft at 3:30AM Mar 17, 2024Observed: 2.94 ft at 3:45AM Mar 17, 2024Observed: 2.93 ft at 4:00AM Mar 17, 2024Observed: 2.93 ft at 4:15AM Mar 17, 2024Observed: 2.93 ft at 4:30AM Mar 17, 2024Observed: 2.93 ft at 4:45AM Mar 17, 2024Observed: 2.92 ft at 5:00AM Mar 17, 2024Observed: 2.92 ft at 5:15AM Mar 17, 2024Observed: 2.92 ft at 5:30AM Mar 17, 2024Observed: 2.92 ft at 5:45AM Mar 17, 2024Observed: 2.92 ft at 6:00AM Mar 17, 2024Observed: 2.91 ft at 6:15AM Mar 17, 2024Observed: 2.91 ft at 6:30AM Mar 17, 2024Observed: 2.91 ft at 6:45AM Mar 17, 2024Observed: 2.91 ft at 7:00AM Mar 17, 2024Observed: 2.91 ft at 7:15AM Mar 17, 2024Observed: 2.91 ft at 7:30AM Mar 17, 2024Observed: 2.91 ft at 7:45AM Mar 17, 2024Observed: 2.9 ft at 8:00AM Mar 17, 2024Observed: 2.9 ft at 8:15AM Mar 17, 2024Observed: 2.9 ft at 8:30AM Mar 17, 2024Observed: 2.9 ft at 8:45AM Mar 17, 2024Observed: 2.9 ft at 9:00AM Mar 17, 2024Observed: 2.9 ft at 9:15AM Mar 17, 2024Observed: 2.89 ft at 9:30AM Mar 17, 2024Observed: 2.9 ft at 9:45AM Mar 17, 2024Observed: 2.89 ft at 10:00AM Mar 17, 2024Observed: 2.89 ft at 10:15AM Mar 17, 2024Observed: 2.89 ft at 10:30AM Mar 17, 2024Observed: 2.89 ft at 10:45AM Mar 17, 2024Observed: 2.89 ft at 11:00AM Mar 17, 2024Observed: 2.88 ft at 11:15AM Mar 17, 2024Observed: 2.88 ft at 11:30AM Mar 17, 2024Observed: 2.88 ft at 11:45AM Mar 17, 2024Observed: 2.88 ft at 12:00PM Mar 17, 2024Observed: 2.87 ft at 12:15PM Mar 17, 2024Observed: 2.87 ft at 12:30PM Mar 17, 2024Observed: 2.87 ft at 12:45PM Mar 17, 2024Observed: 2.87 ft at 1:00PM Mar 17, 2024Observed: 2.86 ft at 1:15PM Mar 17, 2024Observed: 2.86 ft at 1:30PM Mar 17, 2024Observed: 2.86 ft at 1:45PM Mar 17, 2024Observed: 2.86 ft at 2:00PM Mar 17, 2024Observed: 2.85 ft at 2:15PM Mar 17, 2024Observed: 2.85 ft at 2:30PM Mar 17, 2024Observed: 2.85 ft at 2:45PM Mar 17, 2024Observed: 2.85 ft at 3:00PM Mar 17, 2024Observed: 2.85 ft at 3:15PM Mar 17, 2024Observed: 2.85 ft at 3:30PM Mar 17, 2024Observed: 2.84 ft at 3:45PM Mar 17, 2024Observed: 2.84 ft at 4:00PM Mar 17, 2024Observed: 2.84 ft at 4:15PM Mar 17, 2024Observed: 2.84 ft at 4:30PM Mar 17, 2024Observed: 2.84 ft at 4:45PM Mar 17, 2024Observed: 2.84 ft at 5:00PM Mar 17, 2024Observed: 2.83 ft at 5:15PM Mar 17, 2024Observed: 2.84 ft at 5:30PM Mar 17, 2024Observed: 2.83 ft at 5:45PM Mar 17, 2024Observed: 2.83 ft at 6:00PM Mar 17, 2024Observed: 2.83 ft at 6:15PM Mar 17, 2024Observed: 2.83 ft at 6:30PM Mar 17, 2024Observed: 2.83 ft at 6:45PM Mar 17, 2024Observed: 2.83 ft at 7:00PM Mar 17, 2024Observed: 2.83 ft at 7:15PM Mar 17, 2024Observed: 2.83 ft at 7:30PM Mar 17, 2024Observed: 2.83 ft at 7:45PM Mar 17, 2024Observed: 2.83 ft at 8:00PM Mar 17, 2024Observed: 2.83 ft at 8:15PM Mar 17, 2024Observed: 2.83 ft at 8:30PM Mar 17, 2024Observed: 2.83 ft at 8:45PM Mar 17, 2024Observed: 2.83 ft at 9:00PM Mar 17, 2024Observed: 2.84 ft at 9:15PM Mar 17, 2024Observed: 2.84 ft at 9:30PM Mar 17, 2024Observed: 2.84 ft at 9:45PM Mar 17, 2024Observed: 2.84 ft at 10:00PM Mar 17, 2024Observed: 2.84 ft at 10:15PM Mar 17, 2024Observed: 2.84 ft at 10:30PM Mar 17, 2024Observed: 2.84 ft at 10:45PM Mar 17, 2024Observed: 2.84 ft at 11:00PM Mar 17, 2024Observed: 2.85 ft at 11:15PM Mar 17, 2024Observed: 2.84 ft at 11:30PM Mar 17, 2024Observed: 2.85 ft at 11:45PM Mar 17, 2024Observed: 2.85 ft at 12:00AM Mar 18, 2024Observed: 2.85 ft at 12:15AM Mar 18, 2024Observed: 2.85 ft at 12:30AM Mar 18, 2024Observed: 2.85 ft at 12:45AM Mar 18, 2024Observed: 2.85 ft at 1:00AM Mar 18, 2024Observed: 2.85 ft at 1:15AM Mar 18, 2024Observed: 2.85 ft at 1:30AM Mar 18, 2024Observed: 2.85 ft at 1:45AM Mar 18, 2024Observed: 2.85 ft at 2:00AM Mar 18, 2024Observed: 2.85 ft at 2:15AM Mar 18, 2024Observed: 2.85 ft at 2:30AM Mar 18, 2024Observed: 2.84 ft at 2:45AM Mar 18, 2024Observed: 2.84 ft at 3:00AM Mar 18, 2024Observed: 2.84 ft at 3:15AM Mar 18, 2024Observed: 2.84 ft at 3:30AM Mar 18, 2024Observed: 2.83 ft at 3:45AM Mar 18, 2024Observed: 2.83 ft at 4:00AM Mar 18, 2024Observed: 2.83 ft at 4:15AM Mar 18, 2024Observed: 2.83 ft at 4:30AM Mar 18, 2024Observed: 2.83 ft at 4:45AM Mar 18, 2024Observed: 2.82 ft at 5:00AM Mar 18, 2024Observed: 2.82 ft at 5:15AM Mar 18, 2024Observed: 2.82 ft at 5:30AM Mar 18, 2024Observed: 2.82 ft at 5:45AM Mar 18, 2024Observed: 2.82 ft at 6:00AM Mar 18, 2024Observed: 2.82 ft at 6:15AM Mar 18, 2024Observed: 2.82 ft at 6:30AM Mar 18, 2024Observed: 2.82 ft at 6:45AM Mar 18, 2024Observed: 2.82 ft at 7:00AM Mar 18, 2024Observed: 2.81 ft at 7:15AM Mar 18, 2024Observed: 2.82 ft at 7:30AM Mar 18, 2024Observed: 2.81 ft at 7:45AM Mar 18, 2024Observed: 2.81 ft at 8:00AM Mar 18, 2024Observed: 2.81 ft at 8:15AM Mar 18, 2024Observed: 2.81 ft at 8:30AM Mar 18, 2024Observed: 2.81 ft at 8:45AM Mar 18, 2024Observed: 2.81 ft at 9:00AM Mar 18, 2024Observed: 2.81 ft at 9:15AM Mar 18, 2024Observed: 2.81 ft at 9:30AM Mar 18, 2024Observed: 2.81 ft at 9:45AM Mar 18, 2024Observed: 2.81 ft at 10:00AM Mar 18, 2024Observed: 2.8 ft at 10:15AM Mar 18, 2024Observed: 2.8 ft at 10:30AM Mar 18, 2024Observed: 2.8 ft at 10:45AM Mar 18, 2024Observed: 2.8 ft at 11:00AM Mar 18, 2024Observed: 2.79 ft at 11:15AM Mar 18, 2024Observed: 2.79 ft at 11:30AM Mar 18, 2024Observed: 2.79 ft at 11:45AM Mar 18, 2024Observed: 2.79 ft at 12:00PM Mar 18, 2024Observed: 2.78 ft at 12:15PM Mar 18, 2024Observed: 2.78 ft at 12:30PM Mar 18, 2024Observed: 2.78 ft at 12:45PM Mar 18, 2024Observed: 2.78 ft at 1:00PM Mar 18, 2024Observed: 2.78 ft at 1:15PM Mar 18, 2024Observed: 2.77 ft at 1:30PM Mar 18, 2024Observed: 2.77 ft at 1:45PM Mar 18, 2024Observed: 2.77 ft at 2:00PM Mar 18, 2024Observed: 2.77 ft at 2:15PM Mar 18, 2024Observed: 2.77 ft at 2:30PM Mar 18, 2024Observed: 2.76 ft at 2:45PM Mar 18, 2024Observed: 2.76 ft at 3:00PM Mar 18, 2024Observed: 2.76 ft at 3:15PM Mar 18, 2024Observed: 2.75 ft at 3:30PM Mar 18, 2024Observed: 2.76 ft at 3:45PM Mar 18, 2024Observed: 2.75 ft at 4:00PM Mar 18, 2024Observed: 2.76 ft at 4:15PM Mar 18, 2024Observed: 2.76 ft at 4:30PM Mar 18, 2024Observed: 2.75 ft at 4:45PM Mar 18, 2024Observed: 2.75 ft at 5:00PM Mar 18, 2024Observed: 2.75 ft at 5:15PM Mar 18, 2024Observed: 2.75 ft at 5:30PM Mar 18, 2024Observed: 2.75 ft at 5:45PM Mar 18, 2024Observed: 2.75 ft at 6:00PM Mar 18, 2024Observed: 2.75 ft at 6:15PM Mar 18, 2024Observed: 2.74 ft at 6:30PM Mar 18, 2024Observed: 2.74 ft at 6:45PM Mar 18, 2024Observed: 2.74 ft at 7:00PM Mar 18, 2024Observed: 2.74 ft at 7:15PM Mar 18, 2024Observed: 2.75 ft at 7:30PM Mar 18, 2024Observed: 2.74 ft at 7:45PM Mar 18, 2024Observed: 2.75 ft at 8:00PM Mar 18, 2024Observed: 2.75 ft at 8:15PM Mar 18, 2024Observed: 2.75 ft at 8:30PM Mar 18, 2024Observed: 2.74 ft at 8:45PM Mar 18, 2024Observed: 2.75 ft at 9:00PM Mar 18, 2024Observed: 2.75 ft at 9:15PM Mar 18, 2024Observed: 2.75 ft at 9:30PM Mar 18, 2024Observed: 2.75 ft at 9:45PM Mar 18, 2024USGS--Water Resources of the United StatesAPHG1(plotting HGIRG) Graph Created (10:04PM Mar 18, 2024)ObservedLatest observed value: 2.75 ft at 9:45 PM EDT 18-Mar-2024. Flood Stage is 7 ft
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Tabular Data (UTC)
Tabular Data (EDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
NOTE: Automated gauge readings are now available, courtesy of the USGS.

NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Big Creek near Alpharetta are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - at GA 9 near Cumming Upstream Gauge Downstream Gauge Downstream Gauge - below Hog Wallow at Roswell
Flood Categories (in feet)
Major Flood Stage: 13
Moderate Flood Stage: 11
Flood Stage: 7
Action Stage: 6
Low Stage (in feet): -9999

Historic Crests
(1) 13.05 ft on 02/03/1982
(2) 12.81 ft on 03/17/1990
(3) 12.54 ft on 02/21/1961
(4) 12.50 ft on 09/22/2009
(5) 12.30 ft on 12/06/1983
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 8.57 ft on 02/13/2024
(2) 9.09 ft on 01/26/2024
(3) 10.22 ft on 01/10/2024
(4) 8.21 ft on 12/27/2023
(5) 8.81 ft on 04/09/2023
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.90 ft on 10/11/1974
(2) 1.00 ft on 09/09/1999
(3) 1.08 ft on 09/30/2007
Show More Low Water Records

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:16
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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
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19 Catastrophic flooding occurs along the creek with water reaching the bottom of Kimball Bridge Road. Webb Bridge Road...McGinnis Ferry Road...Windward Parkway...Haynes Bridge Road...and Georgia 400 will be under a few feet of water. Apartments on Gran Crique Drive and Jameson Pass in Alpharetta and numerous homes on Jade Cove Circle and La View Circle near Roswell will be flooded. Rock Mill Park will be completely under water. Flood waters begin to reach several buildings in the Northpoint Mall complex.
17 Flooding never seen before will affect portions of Alpharetta along the creek. Webb Bridge Road...McGinnis Ferry Road...Haynes Bridge Road...Old Holcomb Bridge Road and Georgia 400 will be under water. Several apartments on Gran Crique Drive and numerous homes on Jade Cove Circle and La View Circle near Roswell will be flooded. Flooding expands in the Rock Mill Park with water covering the concrete pad of the octagon pavilion and half of the parking lot. The Big Creek Greenway is flooded up to 11 feet deep.
15 Record flooding continues upstream and downstream from Kimball Bridge Road. Flooding occurs on Webb Bridge Road...McGinnis Ferry Road...Haynes Bridge Road...Old Holcomb Bridge Road and Georgia 400. Flood waters enter several apartments on Gran Crique Drive and numerous homes on Jade Cove Circle and La View Circle near Roswell. Flooding expands in the Rock Mill Park with water covering the concrete pad of the square pavilion and more of the parking lot. The Big Creek Greenway is flooded up to 9 feet deep.
14 Record flooding occurs upstream and downstream from Kimball Bridge Road. Flooding occurs on Webb Bridge Road...McGinnis Ferry Road...Haynes Bridge Road and Old Holcomb Bridge Road. Flood waters enter several apartments on Gran Crique Drive and numerous homes on Jade Cove Circle and La View Circle near Roswell. Flooding expands in the Rock Mill Park with the water covering the concrete pad of the square pavilion and more of the parking lot. The Big Creek Greenway is flooded up to 8 feet deep.
13 Major flooding begins with water hitting a foot bridge just downstream of the gage on Kimball Bridge Road. Flooding begins on Webb Bridge Road...McGinnis Ferry Road and in the backyards of homes off Society Street. Flood waters reach the foundations of apartments on Gran Crique Drive...and homes on Jade Cove Circle and La View Circle near Roswell. The Big Creek Greenway is flooded up to 7 feet deep. A large portion of Rock Mill Park is flooded and the lower end of the parking lot is affected.
12 Significant flooding expands along the creek as water reaches the bottom of a foot bridge just downstream of the gage on Kimball Bridge Road. Backyards of homes off Seale Drive and Gunter Court and portions of the Golf Club of Georgia are under 3 feet of water. Backyards of homes off Jade Cove Circle and La View Circle near Roswell will be under a foot of water. The Big Creek Greenway is flooded up to 6 feet deep. Flooding covers portions of Rock Mill Park and the YMCA Campground off Preston Ridge Road.
11 Moderate flooding begins and occurs upstream and downstream from the gage on Kimball Bridge Road near Rock Mill Park. Backyards of homes off Seale Drive and Gunter Court and portions of the Golf Club of Georgia are under two feet of water. Backyards of homes off Jade Cove Circle and La View Circle near Roswell begin to flood. The Big Creek Greenway will be flooded up to 5 feet deep and will be closed. A large portion of the YMCA Campground off Preston Ridge Road will be under 3 feet of water.
10 Minor flooding expands along the creek from near Cumming to Alpharetta and Roswell. Backyards of homes off Seale Drive and Gunter Court and portions of the Golf of Georgia are under a foot of water. The Big Creek Greenway experiences significant flooding up to 4 feet deep with closure of the paths. This especially occurs upstream and downstream from the gage on Kimball Bridge Road and Rock Mill Park. A large portion of the YMCA Campground off Preston Ridge Road will be under a two feet of water.
9 Minor flooding expands along the creek from near Cumming to Alpharetta and Roswell. Backyards of homes off Seale Drive and Gunter Court and portions of the Golf of Georgia begin to flood. The Big Creek Greenway experiences significant flooding up to 3 feet deep...which results in closure of most of the paths. This especially occurs upstream and downstream from the gage on Kimball Bridge Road and Rock Mill Park. A large portion of the YMCA Campground off Preston Ridge Road will be under a foot of water.
8 Minor flooding continues to expand further into the woodlands and fields along the creek from near Cumming in south Forsyth County to Alpharetta and Roswell in north Fulton County. Additional portions of The Big Creek Greenway have minor flooding with 1 to 2 feet of water. Most of the walking and biking paths will be closed...especially upstream and downstream from the gage on Kimball Bridge Road and near Rock Mill Park. Portions of the YMCA Campground off Preston Ridge Road will flood.
7 Flood Stage is reached. Minor flooding of woodlands and fields begin along the creek between Cumming in Forsyth County...to Alpharetta and Roswell in North Fulton County. Flooding starts to effect portions of The Big Creek Greenway near Alpharetta and some portions may become closed with around one foot of water...especially upstream and downstream from the gage on Kimball Bridge Road and near Rock Mill Park. Portions of the YMCA Campground off Preston Ridge Road will begin to flood.
6 Bankfull conditions are reached along the creek between Cumming in Forsyth County...to Alpharetta and Roswell in North Fulton County. Some low lying spots along The Big Creek Greenway will begin to flood with a few inches of water upstream and downstream from the gage on Kimball Bridge Road. Water will begin to enter low portions of the YMCA Campground off Preston Ridge Road.
Low Water Impacts Collapse
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120-400 cfs Minimum flow for whitewater kayaking on the 2.6 mile stretch from Grimes Bridge Road to Vickery Creek Park.
55-120 cfs The paddling run from Big Creek (or Vickery Creek) at Oxbow Road to Azalea Drive on the Chattahoochee River is considered a class II-III run. A minimum flow of at least 55 cfs is recommended for paddling.
About This Location Collapse

Latitude: 34.050556° N, Longitude: 84.269444° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 7 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 960.8 ft 967.8 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
USGS Flood Inundation Mapper for a large portion of Big Creek is available at: http://wimcloud.usgs.gov/apps/FIM/FloodInundationMapper.html?siteno=02335700#app=605a&3b39-selectedIndex=0&26ff-selectedIndex=0

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) 7 Day (GEFS)
HEFS Ensemble NAEFS Ensemble GEFS Ensemble

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

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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
Peachtree City/Atlanta Weather Forecast Office
4 Falcon Drive
Peachtree City, GA 30269
(770) 486-1133
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Page last modified: 2-Nov-2020 7:30 PM
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