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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
Mormon Slough at Bellota Stage (ft)Flow (kcfs)Observed: 4.28 ft at 9:30AM Sep 24, 2023Observed: 4.26 ft at 9:45AM Sep 24, 2023Observed: 4.28 ft at 10:00AM Sep 24, 2023Observed: 4.28 ft at 10:15AM Sep 24, 2023Observed: 4.31 ft at 10:30AM Sep 24, 2023Observed: 4.26 ft at 10:45AM Sep 24, 2023Highest Observation: 4.47 ft at 11:00AM Sep 24, 2023Observed: 4.4 ft at 11:15AM Sep 24, 2023Observed: 4.3 ft at 11:30AM Sep 24, 2023Observed: 4.29 ft at 11:45AM Sep 24, 2023Observed: 4.29 ft at 12:00PM Sep 24, 2023Observed: 4.29 ft at 12:15PM Sep 24, 2023Observed: 4.31 ft at 12:30PM Sep 24, 2023Observed: 4.34 ft at 12:45PM Sep 24, 2023Observed: 4.29 ft at 1:00PM Sep 24, 2023Observed: 4.36 ft at 1:15PM Sep 24, 2023Observed: 4.34 ft at 1:30PM Sep 24, 2023Observed: 4.35 ft at 1:45PM Sep 24, 2023Observed: 4.36 ft at 2:00PM Sep 24, 2023Observed: 4.38 ft at 2:15PM Sep 24, 2023Observed: 4.36 ft at 2:30PM Sep 24, 2023Observed: 4.36 ft at 2:45PM Sep 24, 2023Observed: 4.35 ft at 3:00PM Sep 24, 2023Observed: 4.35 ft at 3:15PM Sep 24, 2023Observed: 4.38 ft at 3:30PM Sep 24, 2023Observed: 4.37 ft at 3:45PM Sep 24, 2023Observed: 4.38 ft at 4:00PM Sep 24, 2023Observed: 4.38 ft at 4:15PM Sep 24, 2023Observed: 4.38 ft at 4:30PM Sep 24, 2023Observed: 4.36 ft at 4:45PM Sep 24, 2023Observed: 4.38 ft at 5:00PM Sep 24, 2023Observed: 4.38 ft at 5:15PM Sep 24, 2023Observed: 4.38 ft at 5:30PM Sep 24, 2023Observed: 4.37 ft at 5:45PM Sep 24, 2023Observed: 4.37 ft at 6:00PM Sep 24, 2023Observed: 4.37 ft at 6:15PM Sep 24, 2023Observed: 4.38 ft at 6:30PM Sep 24, 2023Observed: 4.36 ft at 6:45PM Sep 24, 2023Observed: 4.38 ft at 7:00PM Sep 24, 2023Observed: 4.38 ft at 7:15PM Sep 24, 2023Observed: 4.38 ft at 7:30PM Sep 24, 2023Observed: 4.38 ft at 7:45PM Sep 24, 2023Observed: 4.37 ft at 8:00PM Sep 24, 2023Observed: 4.39 ft at 8:15PM Sep 24, 2023Observed: 4.37 ft at 8:30PM Sep 24, 2023Observed: 4.37 ft at 8:45PM Sep 24, 2023Observed: 4.38 ft at 9:00PM Sep 24, 2023Observed: 4.37 ft at 9:15PM Sep 24, 2023Observed: 4.37 ft at 9:30PM Sep 24, 2023Observed: 4.38 ft at 9:45PM Sep 24, 2023Observed: 4.38 ft at 10:00PM Sep 24, 2023Observed: 4.38 ft at 10:15PM Sep 24, 2023Observed: 4.38 ft at 10:30PM Sep 24, 2023Observed: 4.37 ft at 10:45PM Sep 24, 2023Observed: 4.39 ft at 11:00PM Sep 24, 2023Observed: 4.38 ft at 11:15PM Sep 24, 2023Observed: 4.39 ft at 11:30PM Sep 24, 2023Observed: 4.39 ft at 11:45PM Sep 24, 2023Observed: 4.38 ft at 12:00AM Sep 25, 2023Observed: 4.38 ft at 12:15AM Sep 25, 2023Observed: 4.37 ft at 12:30AM Sep 25, 2023Observed: 4.37 ft at 12:45AM Sep 25, 2023Observed: 4.37 ft at 1:00AM Sep 25, 2023Observed: 4.38 ft at 1:15AM Sep 25, 2023Observed: 4.37 ft at 1:30AM Sep 25, 2023Observed: 4.36 ft at 1:45AM Sep 25, 2023Observed: 4.36 ft at 2:00AM Sep 25, 2023Observed: 4.37 ft at 2:15AM Sep 25, 2023Observed: 4.37 ft at 2:30AM Sep 25, 2023Observed: 4.37 ft at 2:45AM Sep 25, 2023Observed: 4.29 ft at 3:00AM Sep 25, 2023Observed: 4.38 ft at 3:15AM Sep 25, 2023Observed: 4.3 ft at 3:30AM Sep 25, 2023Observed: 4.12 ft at 3:45AM Sep 25, 2023Observed: 4 ft at 4:00AM Sep 25, 2023Observed: 3.89 ft at 4:15AM Sep 25, 2023Observed: 3.73 ft at 4:30AM Sep 25, 2023Observed: 3.62 ft at 4:45AM Sep 25, 2023Observed: 3.55 ft at 5:00AM Sep 25, 2023Observed: 3.48 ft at 5:15AM Sep 25, 2023Observed: 3.38 ft at 5:30AM Sep 25, 2023Observed: 3.32 ft at 5:45AM Sep 25, 2023Observed: 3.26 ft at 6:00AM Sep 25, 2023Observed: 3.2 ft at 6:15AM Sep 25, 2023Observed: 3.16 ft at 6:30AM Sep 25, 2023Observed: 3.13 ft at 6:45AM Sep 25, 2023Observed: 2.97 ft at 7:00AM Sep 25, 2023Observed: 2.99 ft at 7:15AM Sep 25, 2023Observed: 2.97 ft at 7:30AM Sep 25, 2023Observed: 2.96 ft at 7:45AM Sep 25, 2023Observed: 2.89 ft at 8:00AM Sep 25, 2023Observed: 3.04 ft at 8:15AM Sep 25, 2023Observed: 3.33 ft at 8:30AM Sep 25, 2023Observed: 3.76 ft at 8:45AM Sep 25, 2023Observed: 4.33 ft at 9:00AM Sep 25, 2023Observed: 4.31 ft at 9:15AM Sep 25, 2023Observed: 4.3 ft at 9:30AM Sep 25, 2023Observed: 4.31 ft at 9:45AM Sep 25, 2023Observed: 4.3 ft at 10:00AM Sep 25, 2023Observed: 4.31 ft at 10:15AM Sep 25, 2023Observed: 4.32 ft at 10:30AM Sep 25, 2023Observed: 4.31 ft at 10:45AM Sep 25, 2023Observed: 4.31 ft at 11:00AM Sep 25, 2023Observed: 4.31 ft at 11:15AM Sep 25, 2023Observed: 4.31 ft at 11:30AM Sep 25, 2023Observed: 4.32 ft at 11:45AM Sep 25, 2023Observed: 4.32 ft at 12:00PM Sep 25, 2023Observed: 4.3 ft at 12:15PM Sep 25, 2023Observed: 4.32 ft at 12:30PM Sep 25, 2023Observed: 4.31 ft at 12:45PM Sep 25, 2023Observed: 4.31 ft at 1:00PM Sep 25, 2023Observed: 4.31 ft at 1:15PM Sep 25, 2023Observed: 4.3 ft at 1:30PM Sep 25, 2023Observed: 4.3 ft at 1:45PM Sep 25, 2023Observed: 4.32 ft at 2:00PM Sep 25, 2023Observed: 4.31 ft at 2:15PM Sep 25, 2023Observed: 4.31 ft at 2:30PM Sep 25, 2023Observed: 4.31 ft at 2:45PM Sep 25, 2023Observed: 4.31 ft at 3:00PM Sep 25, 2023Observed: 4.31 ft at 3:15PM Sep 25, 2023Observed: 4.31 ft at 3:30PM Sep 25, 2023Observed: 4.27 ft at 3:45PM Sep 25, 2023Observed: 4.32 ft at 4:00PM Sep 25, 2023Observed: 4.32 ft at 4:15PM Sep 25, 2023Observed: 4.27 ft at 4:30PM Sep 25, 2023Observed: 4.31 ft at 4:45PM Sep 25, 2023Observed: 4.3 ft at 5:00PM Sep 25, 2023Observed: 4.3 ft at 5:15PM Sep 25, 2023Observed: 4.3 ft at 5:30PM Sep 25, 2023Observed: 4.29 ft at 5:45PM Sep 25, 2023Observed: 4.33 ft at 6:00PM Sep 25, 2023Observed: 4.26 ft at 6:15PM Sep 25, 2023Observed: 4.32 ft at 6:30PM Sep 25, 2023Observed: 4.26 ft at 6:45PM Sep 25, 2023Observed: 4.35 ft at 7:00PM Sep 25, 2023Observed: 4.26 ft at 7:15PM Sep 25, 2023Observed: 4.27 ft at 7:30PM Sep 25, 2023Observed: 4.28 ft at 7:45PM Sep 25, 2023Observed: 4.27 ft at 8:00PM Sep 25, 2023Observed: 4.27 ft at 8:15PM Sep 25, 2023Observed: 4.27 ft at 8:30PM Sep 25, 2023Observed: 4.27 ft at 8:45PM Sep 25, 2023Observed: 4.27 ft at 9:00PM Sep 25, 2023Observed: 4.27 ft at 9:15PM Sep 25, 2023Observed: 4.27 ft at 9:30PM Sep 25, 2023Observed: 4.27 ft at 9:45PM Sep 25, 2023Observed: 4.27 ft at 10:00PM Sep 25, 2023Observed: 4.27 ft at 10:15PM Sep 25, 2023Observed: 4.27 ft at 10:30PM Sep 25, 2023Observed: 4.27 ft at 10:45PM Sep 25, 2023Observed: 4.27 ft at 11:00PM Sep 25, 2023Observed: 4.27 ft at 11:15PM Sep 25, 2023Observed: 4.27 ft at 11:30PM Sep 25, 2023Observed: 4.27 ft at 11:45PM Sep 25, 2023Observed: 4.27 ft at 12:00AM Sep 26, 2023Observed: 4.26 ft at 12:15AM Sep 26, 2023Observed: 4.27 ft at 12:30AM Sep 26, 2023Observed: 4.27 ft at 12:45AM Sep 26, 2023Observed: 4.26 ft at 1:00AM Sep 26, 2023Observed: 4.25 ft at 2:15AM Sep 26, 2023Observed: 4.25 ft at 2:30AM Sep 26, 2023Observed: 4.25 ft at 2:45AM Sep 26, 2023Observed: 4.07 ft at 3:00AM Sep 26, 2023Observed: 3.89 ft at 3:15AM Sep 26, 2023Observed: 3.71 ft at 3:30AM Sep 26, 2023Observed: 3.6 ft at 3:45AM Sep 26, 2023Observed: 3.49 ft at 4:00AM Sep 26, 2023Observed: 3.43 ft at 4:15AM Sep 26, 2023Observed: 3.38 ft at 4:30AM Sep 26, 2023Observed: 3.27 ft at 4:45AM Sep 26, 2023Observed: 3.23 ft at 5:00AM Sep 26, 2023Observed: 3.16 ft at 5:15AM Sep 26, 2023Observed: 3.13 ft at 5:30AM Sep 26, 2023Observed: 3.11 ft at 5:45AM Sep 26, 2023Observed: 3.08 ft at 6:00AM Sep 26, 2023Observed: 3.07 ft at 6:15AM Sep 26, 2023Observed: 3.04 ft at 6:30AM Sep 26, 2023Observed: 3.04 ft at 6:45AM Sep 26, 2023Observed: 3.02 ft at 7:00AM Sep 26, 2023Observed: 3.09 ft at 7:15AM Sep 26, 2023Observed: 3.17 ft at 7:30AM Sep 26, 2023Observed: 3.23 ft at 7:45AM Sep 26, 2023Observed: 3.35 ft at 8:00AM Sep 26, 2023Observed: 3.48 ft at 8:15AM Sep 26, 2023Observed: 3.7 ft at 8:30AM Sep 26, 2023Observed: 3.99 ft at 8:45AM Sep 26, 2023Observed: 4.29 ft at 9:00AM Sep 26, 2023Observed: 4.33 ft at 9:15AM Sep 26, 2023Observed: 4.31 ft at 9:30AM Sep 26, 2023Observed: 4.31 ft at 9:45AM Sep 26, 2023Observed: 4.29 ft at 10:00AM Sep 26, 2023Observed: 4.31 ft at 10:15AM Sep 26, 2023Observed: 4.3 ft at 10:30AM Sep 26, 2023Observed: 4.3 ft at 10:45AM Sep 26, 2023Observed: 4.32 ft at 11:00AM Sep 26, 2023Observed: 4.31 ft at 11:15AM Sep 26, 2023Observed: 4.31 ft at 11:30AM Sep 26, 2023Observed: 4.32 ft at 11:45AM Sep 26, 2023Observed: 4.3 ft at 12:00PM Sep 26, 2023Observed: 4.3 ft at 12:15PM Sep 26, 2023Observed: 4.31 ft at 12:30PM Sep 26, 2023Observed: 4.32 ft at 12:45PM Sep 26, 2023Observed: 4.31 ft at 1:00PM Sep 26, 2023Observed: 4.31 ft at 1:15PM Sep 26, 2023Observed: 4.32 ft at 1:30PM Sep 26, 2023Observed: 4.3 ft at 1:45PM Sep 26, 2023Observed: 4.3 ft at 2:00PM Sep 26, 2023Observed: 4.31 ft at 2:15PM Sep 26, 2023Observed: 4.3 ft at 2:30PM Sep 26, 2023Observed: 4.31 ft at 2:45PM Sep 26, 2023Observed: 4.31 ft at 3:00PM Sep 26, 2023Observed: 4.32 ft at 3:15PM Sep 26, 2023Observed: 4.3 ft at 3:30PM Sep 26, 2023Observed: 4.33 ft at 3:45PM Sep 26, 2023Observed: 4.31 ft at 4:00PM Sep 26, 2023Observed: 4.3 ft at 4:15PM Sep 26, 2023Observed: 4.3 ft at 4:30PM Sep 26, 2023Observed: 4.3 ft at 4:45PM Sep 26, 2023Observed: 4.31 ft at 5:00PM Sep 26, 2023Observed: 4.3 ft at 5:15PM Sep 26, 2023Observed: 4.32 ft at 5:30PM Sep 26, 2023Observed: 4.29 ft at 5:45PM Sep 26, 2023Observed: 4.3 ft at 6:00PM Sep 26, 2023Observed: 4.31 ft at 7:15PM Sep 26, 2023Observed: 4.32 ft at 7:30PM Sep 26, 2023Observed: 4.3 ft at 7:45PM Sep 26, 2023Observed: 4.31 ft at 8:00PM Sep 26, 2023Observed: 4.3 ft at 8:15PM Sep 26, 2023Observed: 4.32 ft at 8:30PM Sep 26, 2023Observed: 4.31 ft at 8:45PM Sep 26, 2023Observed: 4.31 ft at 9:00PM Sep 26, 2023Observed: 4.4 ft at 9:15PM Sep 26, 2023Observed: 4.4 ft at 9:30PM Sep 26, 2023Observed: 4.4 ft at 9:45PM Sep 26, 2023Observed: 4.4 ft at 10:00PM Sep 26, 2023Observed: 4.4 ft at 10:15PM Sep 26, 2023Observed: 4.37 ft at 10:30PM Sep 26, 2023Observed: 4.37 ft at 10:45PM Sep 26, 2023Observed: 4.37 ft at 11:00PM Sep 26, 2023Observed: 4.37 ft at 11:15PM Sep 26, 2023Observed: 4.37 ft at 11:30PM Sep 26, 2023Observed: 4.37 ft at 11:45PM Sep 26, 2023Observed: 4.37 ft at 12:00AM Sep 27, 2023Observed: 4.37 ft at 12:15AM Sep 27, 2023Observed: 4.37 ft at 12:30AM Sep 27, 2023Observed: 4.37 ft at 12:45AM Sep 27, 2023Observed: 4.37 ft at 1:00AM Sep 27, 2023Observed: 4.37 ft at 1:15AM Sep 27, 2023Observed: 4.36 ft at 1:30AM Sep 27, 2023Observed: 4.36 ft at 1:45AM Sep 27, 2023Observed: 4.36 ft at 2:00AM Sep 27, 2023Observed: 4.36 ft at 2:15AM Sep 27, 2023Observed: 4.36 ft at 2:30AM Sep 27, 2023Observed: 4.36 ft at 2:45AM Sep 27, 2023Observed: 4.35 ft at 3:00AM Sep 27, 2023Observed: 4.35 ft at 3:15AM Sep 27, 2023Observed: 4.35 ft at 3:30AM Sep 27, 2023Observed: 4.31 ft at 3:45AM Sep 27, 2023Observed: 4.12 ft at 4:00AM Sep 27, 2023Observed: 3.92 ft at 4:15AM Sep 27, 2023Observed: 3.8 ft at 4:30AM Sep 27, 2023Observed: 3.67 ft at 4:45AM Sep 27, 2023Observed: 3.59 ft at 5:00AM Sep 27, 2023Observed: 3.51 ft at 5:15AM Sep 27, 2023Observed: 3.42 ft at 5:30AM Sep 27, 2023Observed: 3.32 ft at 5:45AM Sep 27, 2023Observed: 3.22 ft at 6:00AM Sep 27, 2023Observed: 3.17 ft at 6:15AM Sep 27, 2023Observed: 3.07 ft at 6:30AM Sep 27, 2023Observed: 3.03 ft at 6:45AM Sep 27, 2023Observed: 2.97 ft at 7:00AM Sep 27, 2023Observed: 2.96 ft at 7:15AM Sep 27, 2023Observed: 2.89 ft at 7:30AM Sep 27, 2023Observed: 2.86 ft at 7:45AM Sep 27, 2023Observed: 2.95 ft at 8:00AM Sep 27, 2023Observed: 3.09 ft at 8:15AM Sep 27, 2023Observed: 3.34 ft at 8:30AM Sep 27, 2023Observed: 3.81 ft at 8:45AM Sep 27, 2023Observed: 4.3 ft at 9:00AM Sep 27, 2023Observed: 4.27 ft at 9:15AM Sep 27, 2023Observed: 4.27 ft at 9:30AM Sep 27, 2023Observed: 4.28 ft at 9:45AM Sep 27, 2023Observed: 4.28 ft at 10:00AM Sep 27, 2023Observed: 4.28 ft at 10:15AM Sep 27, 2023Observed: 4.28 ft at 10:30AM Sep 27, 2023Observed: 4.28 ft at 10:45AM Sep 27, 2023Observed: 4.27 ft at 11:00AM Sep 27, 2023Observed: 4.27 ft at 11:15AM Sep 27, 2023Observed: 4.27 ft at 11:30AM Sep 27, 2023Observed: 4.27 ft at 11:45AM Sep 27, 2023Observed: 4.27 ft at 12:00PM Sep 27, 2023Observed: 4.27 ft at 12:15PM Sep 27, 2023Observed: 4.27 ft at 12:30PM Sep 27, 2023Observed: 4.26 ft at 12:45PM Sep 27, 2023Observed: 4.26 ft at 1:00PM Sep 27, 2023Observed: 4.27 ft at 1:15PM Sep 27, 2023Observed: 4.27 ft at 1:30PM Sep 27, 2023Observed: 4.27 ft at 1:45PM Sep 27, 2023Observed: 4.26 ft at 2:00PM Sep 27, 2023Observed: 4.27 ft at 2:15PM Sep 27, 2023Observed: 4.27 ft at 2:30PM Sep 27, 2023Observed: 4.27 ft at 2:45PM Sep 27, 2023Observed: 4.27 ft at 3:00PM Sep 27, 2023Observed: 4.27 ft at 3:15PM Sep 27, 2023Observed: 4.27 ft at 3:30PM Sep 27, 2023Observed: 4.27 ft at 3:45PM Sep 27, 2023Observed: 4.27 ft at 4:00PM Sep 27, 2023Observed: 4.27 ft at 4:15PM Sep 27, 2023Observed: 4.26 ft at 4:30PM Sep 27, 2023Observed: 4.27 ft at 4:45PM Sep 27, 2023Observed: 4.27 ft at 5:00PM Sep 27, 2023Observed: 4.27 ft at 5:15PM Sep 27, 2023Observed: 4.27 ft at 5:30PM Sep 27, 2023Observed: 4.19 ft at 5:45PM Sep 27, 2023Observed: 4.24 ft at 6:00PM Sep 27, 2023Observed: 4.24 ft at 6:15PM Sep 27, 2023Observed: 4.24 ft at 6:30PM Sep 27, 2023Observed: 4.18 ft at 6:45PM Sep 27, 2023Observed: 4.22 ft at 7:00PM Sep 27, 2023Observed: 4.22 ft at 7:15PM Sep 27, 2023Observed: 4.23 ft at 7:30PM Sep 27, 2023Observed: 4.19 ft at 7:45PM Sep 27, 2023Observed: 4.22 ft at 8:00PM Sep 27, 2023Observed: 4.23 ft at 8:15PM Sep 27, 2023Observed: 4.23 ft at 8:30PM Sep 27, 2023Observed: 4.22 ft at 8:45PM Sep 27, 2023Observed: 4.22 ft at 9:00PM Sep 27, 2023Observed: 4.22 ft at 9:15PM Sep 27, 2023Observed: 4.21 ft at 9:30PM Sep 27, 2023Observed: 4.22 ft at 9:45PM Sep 27, 2023Observed: 4.21 ft at 10:00PM Sep 27, 2023Observed: 4.23 ft at 10:15PM Sep 27, 2023Observed: 4.22 ft at 10:30PM Sep 27, 2023Observed: 4.21 ft at 10:45PM Sep 27, 2023Observed: 4.22 ft at 11:00PM Sep 27, 2023Observed: 4.21 ft at 11:15PM Sep 27, 2023Observed: 4.22 ft at 11:30PM Sep 27, 2023Observed: 4.21 ft at 11:45PM Sep 27, 2023Observed: 4.22 ft at 12:00AM Sep 28, 2023Observed: 4.21 ft at 12:15AM Sep 28, 2023Observed: 4.22 ft at 12:30AM Sep 28, 2023Observed: 4.21 ft at 12:45AM Sep 28, 2023Observed: 4.21 ft at 1:00AM Sep 28, 2023Observed: 4.21 ft at 1:15AM Sep 28, 2023Observed: 4.19 ft at 1:30AM Sep 28, 2023Observed: 4.2 ft at 1:45AM Sep 28, 2023Observed: 4.2 ft at 2:00AM Sep 28, 2023Observed: 4.2 ft at 2:15AM Sep 28, 2023Observed: 4.2 ft at 2:30AM Sep 28, 2023Observed: 4.2 ft at 2:45AM Sep 28, 2023Observed: 4.21 ft at 3:00AM Sep 28, 2023Observed: 4.21 ft at 3:15AM Sep 28, 2023Observed: 4.19 ft at 3:30AM Sep 28, 2023Observed: 4.22 ft at 3:45AM Sep 28, 2023Observed: 4.22 ft at 4:00AM Sep 28, 2023Observed: 4.2 ft at 4:15AM Sep 28, 2023Observed: 4.15 ft at 4:30AM Sep 28, 2023Observed: 3.98 ft at 4:45AM Sep 28, 2023Observed: 3.89 ft at 5:00AM Sep 28, 2023Observed: 3.77 ft at 5:15AM Sep 28, 2023Observed: 3.64 ft at 5:30AM Sep 28, 2023Observed: 3.55 ft at 5:45AM Sep 28, 2023Observed: 3.43 ft at 6:00AM Sep 28, 2023Observed: 3.36 ft at 6:15AM Sep 28, 2023Observed: 3.29 ft at 6:30AM Sep 28, 2023Observed: 3.23 ft at 6:45AM Sep 28, 2023Observed: 3.17 ft at 7:00AM Sep 28, 2023Observed: 3.11 ft at 7:15AM Sep 28, 2023Observed: 3.04 ft at 7:30AM Sep 28, 2023Observed: 3.04 ft at 7:45AM Sep 28, 2023Observed: 3.06 ft at 8:00AM Sep 28, 2023Observed: 3.18 ft at 8:15AM Sep 28, 2023Observed: 3.43 ft at 8:30AM Sep 28, 2023Observed: 3.9 ft at 8:45AM Sep 28, 2023Observed: 4.14 ft at 9:00AM Sep 28, 2023Observed: 4.22 ft at 9:15AM Sep 28, 2023Observed: 4.11 ft at 9:30AM Sep 28, 2023Observed: 4.11 ft at 9:45AM Sep 28, 2023Observed: 4.13 ft at 10:00AM Sep 28, 2023Observed: 4.12 ft at 10:15AM Sep 28, 2023Observed: 4.11 ft at 10:30AM Sep 28, 2023Observed: 4.11 ft at 10:45AM Sep 28, 2023Observed: 4.11 ft at 11:00AM Sep 28, 2023Observed: 4.12 ft at 11:15AM Sep 28, 2023Observed: 4.12 ft at 11:30AM Sep 28, 2023Observed: 4.12 ft at 11:45AM Sep 28, 2023Observed: 4.11 ft at 12:00PM Sep 28, 2023Observed: 4.13 ft at 12:15PM Sep 28, 2023Observed: 4.14 ft at 12:30PM Sep 28, 2023Observed: 4.13 ft at 12:45PM Sep 28, 2023Observed: 4.16 ft at 1:00PM Sep 28, 2023Observed: 4.18 ft at 1:15PM Sep 28, 2023Observed: 4.16 ft at 1:30PM Sep 28, 2023Observed: 4.13 ft at 1:45PM Sep 28, 2023Observed: 4.18 ft at 2:00PM Sep 28, 2023Observed: 4.12 ft at 2:15PM Sep 28, 2023Observed: 4.19 ft at 2:30PM Sep 28, 2023Observed: 4.18 ft at 2:45PM Sep 28, 2023Observed: 4.18 ft at 3:00PM Sep 28, 2023Observed: 4.18 ft at 3:15PM Sep 28, 2023Observed: 4.1 ft at 3:30PM Sep 28, 2023Observed: 4.09 ft at 3:45PM Sep 28, 2023Observed: 4.11 ft at 4:00PM Sep 28, 2023Observed: 4.11 ft at 4:15PM Sep 28, 2023Observed: 4.11 ft at 4:30PM Sep 28, 2023Observed: 4.12 ft at 4:45PM Sep 28, 2023Observed: 4.11 ft at 5:00PM Sep 28, 2023Observed: 4.12 ft at 5:15PM Sep 28, 2023Observed: 4.1 ft at 5:30PM Sep 28, 2023Observed: 4.11 ft at 5:45PM Sep 28, 2023Observed: 4.13 ft at 6:00PM Sep 28, 2023Observed: 4.13 ft at 6:15PM Sep 28, 2023Observed: 4.14 ft at 6:30PM Sep 28, 2023Observed: 4.14 ft at 6:45PM Sep 28, 2023Observed: 4.15 ft at 7:00PM Sep 28, 2023Observed: 4.14 ft at 7:15PM Sep 28, 2023Observed: 4.14 ft at 7:30PM Sep 28, 2023Observed: 4.13 ft at 7:45PM Sep 28, 2023Observed: 4.12 ft at 8:00PM Sep 28, 2023Observed: 4.12 ft at 8:15PM Sep 28, 2023Observed: 4.19 ft at 8:30PM Sep 28, 2023Observed: 4.19 ft at 8:45PM Sep 28, 2023Observed: 4.19 ft at 9:00PM Sep 28, 2023Observed: 4.19 ft at 9:15PM Sep 28, 2023Observed: 4.19 ft at 9:30PM Sep 28, 2023Observed: 4.19 ft at 9:45PM Sep 28, 2023Observed: 4.13 ft at 10:00PM Sep 28, 2023Observed: 4.13 ft at 10:15PM Sep 28, 2023Observed: 4.12 ft at 10:30PM Sep 28, 2023Observed: 4.13 ft at 10:45PM Sep 28, 2023Observed: 4.13 ft at 11:00PM Sep 28, 2023Observed: 4.14 ft at 11:15PM Sep 28, 2023Observed: 4.13 ft at 11:30PM Sep 28, 2023Observed: 4.14 ft at 11:45PM Sep 28, 2023Observed: 4.19 ft at 12:00AM Sep 29, 2023Observed: 4.19 ft at 12:15AM Sep 29, 2023Observed: 4.19 ft at 12:30AM Sep 29, 2023Observed: 4.19 ft at 12:45AM Sep 29, 2023Observed: 4.18 ft at 1:00AM Sep 29, 2023Observed: 4.18 ft at 1:15AM Sep 29, 2023Observed: 4.18 ft at 1:30AM Sep 29, 2023Observed: 4.18 ft at 1:45AM Sep 29, 2023Observed: 4.17 ft at 2:00AM Sep 29, 2023Observed: 4.17 ft at 2:15AM Sep 29, 2023Observed: 4.17 ft at 2:30AM Sep 29, 2023Observed: 4.18 ft at 2:45AM Sep 29, 2023Observed: 4.16 ft at 3:00AM Sep 29, 2023Observed: 4.17 ft at 3:15AM Sep 29, 2023Observed: 4.17 ft at 3:30AM Sep 29, 2023Observed: 4.07 ft at 3:45AM Sep 29, 2023Observed: 3.89 ft at 4:00AM Sep 29, 2023Observed: 3.73 ft at 4:15AM Sep 29, 2023Observed: 3.63 ft at 4:30AM Sep 29, 2023Observed: 3.51 ft at 4:45AM Sep 29, 2023Observed: 3.39 ft at 5:00AM Sep 29, 2023Observed: 3.35 ft at 5:15AM Sep 29, 2023Observed: 3.21 ft at 5:30AM Sep 29, 2023Observed: 3.16 ft at 5:45AM Sep 29, 2023Observed: 3.1 ft at 6:00AM Sep 29, 2023Observed: 3.07 ft at 6:15AM Sep 29, 2023Observed: 3.02 ft at 6:30AM Sep 29, 2023Observed: 2.95 ft at 6:45AM Sep 29, 2023Observed: 2.9 ft at 7:00AM Sep 29, 2023Observed: 2.88 ft at 7:15AM Sep 29, 2023Observed: 2.86 ft at 7:30AM Sep 29, 2023Observed: 2.8 ft at 7:45AM Sep 29, 2023Observed: 2.85 ft at 8:00AM Sep 29, 2023Observed: 2.99 ft at 8:15AM Sep 29, 2023Observed: 3.3 ft at 8:30AM Sep 29, 2023Observed: 3.73 ft at 8:45AM Sep 29, 2023Observed: 4.17 ft at 9:00AM Sep 29, 2023Forecast: 3.7 ft 10:00AM Sep 29, 2023Forecast: 3.7 ft 11:00AM Sep 29, 2023Forecast: 3.7 ft 12:00PM Sep 29, 2023Forecast: 3.8 ft 1:00PM Sep 29, 2023Forecast: 3.8 ft 2:00PM Sep 29, 2023Forecast: 3.8 ft 3:00PM Sep 29, 2023Forecast: 3.8 ft 4:00PM Sep 29, 2023Forecast: 3.8 ft 5:00PM Sep 29, 2023Forecast: 3.8 ft 6:00PM Sep 29, 2023Forecast: 3.8 ft 7:00PM Sep 29, 2023Forecast: 3.8 ft 8:00PM Sep 29, 2023Forecast: 3.8 ft 9:00PM Sep 29, 2023Forecast: 3.8 ft 10:00PM Sep 29, 2023Forecast: 3.8 ft 11:00PM Sep 29, 2023Forecast: 3.8 ft 12:00AM Sep 30, 2023Forecast: 3.8 ft 1:00AM Sep 30, 2023Forecast: 3.8 ft 2:00AM Sep 30, 2023Forecast: 3.8 ft 3:00AM Sep 30, 2023Forecast: 3.8 ft 4:00AM Sep 30, 2023Forecast: 3.8 ft 5:00AM Sep 30, 2023Forecast: 3.8 ft 6:00AM Sep 30, 2023Forecast: 3.8 ft 7:00AM Sep 30, 2023Forecast: 3.8 ft 8:00AM Sep 30, 2023Forecast: 3.8 ft 9:00AM Sep 30, 2023Forecast: 3.8 ft 10:00AM Sep 30, 2023Forecast: 3.8 ft 11:00AM Sep 30, 2023Forecast: 3.8 ft 12:00PM Sep 30, 2023Forecast: 3.8 ft 1:00PM Sep 30, 2023Forecast: 3.8 ft 2:00PM Sep 30, 2023Forecast: 3.8 ft 3:00PM Sep 30, 2023Forecast: 3.8 ft 4:00PM Sep 30, 2023Forecast: 3.8 ft 5:00PM Sep 30, 2023Forecast: 3.8 ft 6:00PM Sep 30, 2023Forecast: 3.8 ft 7:00PM Sep 30, 2023Forecast: 3.8 ft 8:00PM Sep 30, 2023Forecast: 3.8 ft 9:00PM Sep 30, 2023Forecast: 3.8 ft 10:00PM Sep 30, 2023Forecast: 3.8 ft 11:00PM Sep 30, 2023Forecast: 3.8 ft 12:00AM Oct 01, 2023Forecast: 3.8 ft 1:00AM Oct 01, 2023Forecast: 3.8 ft 2:00AM Oct 01, 2023Forecast: 3.8 ft 3:00AM Oct 01, 2023Forecast: 3.8 ft 4:00AM Oct 01, 2023Forecast: 3.8 ft 5:00AM Oct 01, 2023Forecast: 3.8 ft 6:00AM Oct 01, 2023Forecast: 3.8 ft 7:00AM Oct 01, 2023Forecast: 3.8 ft 8:00AM Oct 01, 2023Forecast: 3.8 ft 9:00AM Oct 01, 2023Forecast: 3.8 ft 10:00AM Oct 01, 2023Forecast: 3.8 ft 11:00AM Oct 01, 2023Forecast: 3.8 ft 12:00PM Oct 01, 2023Forecast: 3.8 ft 1:00PM Oct 01, 2023Forecast: 3.8 ft 2:00PM Oct 01, 2023Forecast: 3.8 ft 3:00PM Oct 01, 2023Forecast: 3.8 ft 4:00PM Oct 01, 2023Forecast: 3.8 ft 5:00PM Oct 01, 2023Forecast: 3.8 ft 6:00PM Oct 01, 2023Forecast: 3.8 ft 7:00PM Oct 01, 2023Forecast: 3.8 ft 8:00PM Oct 01, 2023Forecast: 3.8 ft 9:00PM Oct 01, 2023Forecast: 3.8 ft 10:00PM Oct 01, 2023Forecast: 3.8 ft 11:00PM Oct 01, 2023Forecast: 3.8 ft 12:00AM Oct 02, 2023Forecast: 3.8 ft 1:00AM Oct 02, 2023Forecast: 3.8 ft 2:00AM Oct 02, 2023Forecast: 3.8 ft 3:00AM Oct 02, 2023Forecast: 3.8 ft 4:00AM Oct 02, 2023Forecast: 3.8 ft 5:00AM Oct 02, 2023Forecast: 3.8 ft 6:00AM Oct 02, 2023Forecast: 3.8 ft 7:00AM Oct 02, 2023Forecast: 3.8 ft 8:00AM Oct 02, 2023Forecast: 3.8 ft 9:00AM Oct 02, 2023Forecast: 3.8 ft 10:00AM Oct 02, 2023Forecast: 3.8 ft 11:00AM Oct 02, 2023Forecast: 3.8 ft 12:00PM Oct 02, 2023Forecast: 3.8 ft 1:00PM Oct 02, 2023Forecast: 3.8 ft 2:00PM Oct 02, 2023Forecast: 3.8 ft 3:00PM Oct 02, 2023Forecast: 3.8 ft 4:00PM Oct 02, 2023Forecast: 3.8 ft 5:00PM Oct 02, 2023Forecast: 3.8 ft 6:00PM Oct 02, 2023Forecast: 3.8 ft 7:00PM Oct 02, 2023Forecast: 3.8 ft 8:00PM Oct 02, 2023Forecast: 3.8 ft 9:00PM Oct 02, 2023Forecast: 3.8 ft 10:00PM Oct 02, 2023Forecast: 3.8 ft 11:00PM Oct 02, 2023Forecast: 3.8 ft 12:00AM Oct 03, 2023Forecast: 3.8 ft 1:00AM Oct 03, 2023Forecast: 3.8 ft 2:00AM Oct 03, 2023Forecast: 3.8 ft 3:00AM Oct 03, 2023Forecast: 3.8 ft 4:00AM Oct 03, 2023Forecast: 3.8 ft 5:00AM Oct 03, 2023Forecast: 3.8 ft 6:00AM Oct 03, 2023Forecast: 3.8 ft 7:00AM Oct 03, 2023Forecast: 3.8 ft 8:00AM Oct 03, 2023Forecast: 3.8 ft 9:00AM Oct 03, 2023Forecast: 3.8 ft 10:00AM Oct 03, 2023Forecast: 3.8 ft 11:00AM Oct 03, 2023Forecast: 3.8 ft 12:00PM Oct 03, 2023Forecast: 3.8 ft 1:00PM Oct 03, 2023Forecast: 3.8 ft 2:00PM Oct 03, 2023Forecast: 3.8 ft 3:00PM Oct 03, 2023Forecast: 3.8 ft 4:00PM Oct 03, 2023Forecast: 3.8 ft 5:00PM Oct 03, 2023Highest Forecast: 3.9 ft 6:00PM Oct 03, 2023Highest Forecast: 3.9 ft 7:00PM Oct 03, 2023Highest Forecast: 3.9 ft 8:00PM Oct 03, 2023Highest Forecast: 3.9 ft 9:00PM Oct 03, 2023Highest Forecast: 3.9 ft 10:00PM Oct 03, 2023Highest Forecast: 3.9 ft 11:00PM Oct 03, 2023Highest Forecast: 3.9 ft 12:00AM Oct 04, 2023Highest Forecast: 3.9 ft 1:00AM Oct 04, 2023Highest Forecast: 3.9 ft 2:00AM Oct 04, 2023Highest Forecast: 3.9 ft 3:00AM Oct 04, 2023Highest Forecast: 3.9 ft 4:00AM Oct 04, 2023Highest Forecast: 3.9 ft 5:00AM Oct 04, 2023MSGC1(plotting HGIRG) Graph Created (9:23AM Sep 29, 2023)ObservedForecast (issued 8:42AM Sep 29)Latest observed value: 4.17 ft at 9:00 AM PDT 29-Sep-2023. Flood Stage is 22 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: NAVD88
Metadata
Reliability of the Forecast: Forecast data shown here are guidance values only. Please refer to your local NWS office.

NOTE: Forecasts for the Mormon Slough at Bellota are issued routinely year-round.

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Flood Categories (in feet)
Major Flood Stage: 31.9
Moderate Flood Stage: 30.9
Flood Stage: 22
Action Stage: 16
Low Stage (in feet): -9999

Historic Crests
(1) 21.80 ft on 01/16/2023 (P)
(2) 18.48 ft on 02/03/1998
(3) 18.40 ft on 04/04/2006
(4) 18.28 ft on 04/06/2006
(5) 17.84 ft on 02/07/1998
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.43 ft on 03/10/2023 (P)
(2) 21.80 ft on 01/16/2023 (P)
(3) 9.21 ft on 10/25/2021
(4) 6.78 ft on 01/28/2021
(5) 5.17 ft on 03/17/2020
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
If you notice any errors in the below information, please contact our Webmaster
31.9 Top of Levee right bank levee. Water will overflow toward Bellota and Highway 26.
23 Danger Stage
22 Flood Stage
16 Monitor Stage - Bike trail within lower Calaveras River channel flooded.
14.2 UOP research within the Calaveras River channel is affected by water levels.
9 Water rises out of the pilot channel but not yet on the levee slopes.
About This Location Collapse

Latitude: 38.054000° N, Longitude: 121.012000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 22 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 97.417 119.417 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  
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