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Hydrograph River at a Glance Download
Sacramento-San Joaquin Delta at Antioch Stage (ft)Flow (kcfs)Observed: 2.28 ft at 11:00AM May 18, 2022Observed: 2.14 ft at 11:15AM May 18, 2022Observed: 1.99 ft at 11:30AM May 18, 2022Observed: 1.84 ft at 11:45AM May 18, 2022Observed: 1.69 ft at 12:00PM May 18, 2022Observed: 1.57 ft at 12:15PM May 18, 2022Observed: 1.45 ft at 12:30PM May 18, 2022Observed: 1.35 ft at 12:45PM May 18, 2022Observed: 1.3 ft at 1:00PM May 18, 2022Observed: 1.28 ft at 1:15PM May 18, 2022Observed: 1.32 ft at 1:30PM May 18, 2022Observed: 1.41 ft at 1:45PM May 18, 2022Observed: 1.59 ft at 2:00PM May 18, 2022Observed: 1.83 ft at 2:15PM May 18, 2022Observed: 2.11 ft at 2:30PM May 18, 2022Observed: 2.43 ft at 2:45PM May 18, 2022Observed: 2.74 ft at 3:00PM May 18, 2022Observed: 3.06 ft at 3:15PM May 18, 2022Observed: 3.36 ft at 3:30PM May 18, 2022Observed: 3.63 ft at 3:45PM May 18, 2022Observed: 3.87 ft at 4:00PM May 18, 2022Observed: 4.06 ft at 4:15PM May 18, 2022Observed: 4.2 ft at 4:30PM May 18, 2022Observed: 4.3 ft at 4:45PM May 18, 2022Observed: 4.4 ft at 5:00PM May 18, 2022Observed: 4.49 ft at 5:15PM May 18, 2022Observed: 4.58 ft at 5:30PM May 18, 2022Observed: 4.66 ft at 5:45PM May 18, 2022Observed: 4.73 ft at 6:00PM May 18, 2022Observed: 4.79 ft at 6:15PM May 18, 2022Observed: 4.85 ft at 6:30PM May 18, 2022Observed: 4.9 ft at 6:45PM May 18, 2022Observed: 4.93 ft at 7:00PM May 18, 2022Observed: 4.95 ft at 7:15PM May 18, 2022Observed: 4.97 ft at 7:30PM May 18, 2022Observed: 4.96 ft at 7:45PM May 18, 2022Observed: 4.92 ft at 8:00PM May 18, 2022Observed: 4.86 ft at 8:15PM May 18, 2022Observed: 4.78 ft at 8:30PM May 18, 2022Observed: 4.67 ft at 8:45PM May 18, 2022Observed: 4.54 ft at 9:00PM May 18, 2022Observed: 4.4 ft at 9:15PM May 18, 2022Observed: 4.24 ft at 9:30PM May 18, 2022Observed: 4.1 ft at 9:45PM May 18, 2022Observed: 3.97 ft at 10:00PM May 18, 2022Observed: 3.85 ft at 10:15PM May 18, 2022Observed: 3.75 ft at 10:30PM May 18, 2022Observed: 3.68 ft at 10:45PM May 18, 2022Observed: 3.64 ft at 11:00PM May 18, 2022Observed: 3.63 ft at 11:15PM May 18, 2022Observed: 3.64 ft at 11:30PM May 18, 2022Observed: 3.68 ft at 11:45PM May 18, 2022Observed: 3.75 ft at 12:00AM May 19, 2022Observed: 3.85 ft at 12:15AM May 19, 2022Observed: 4 ft at 12:30AM May 19, 2022Observed: 4.17 ft at 12:45AM May 19, 2022Observed: 4.38 ft at 1:00AM May 19, 2022Observed: 4.58 ft at 1:15AM May 19, 2022Observed: 4.8 ft at 1:30AM May 19, 2022Observed: 5.04 ft at 1:45AM May 19, 2022Observed: 5.24 ft at 2:00AM May 19, 2022Observed: 5.43 ft at 2:15AM May 19, 2022Observed: 5.59 ft at 2:30AM May 19, 2022Observed: 5.75 ft at 2:45AM May 19, 2022Observed: 5.88 ft at 3:00AM May 19, 2022Observed: 5.99 ft at 3:15AM May 19, 2022Observed: 6.1 ft at 3:30AM May 19, 2022Observed: 6.2 ft at 3:45AM May 19, 2022Observed: 6.3 ft at 4:00AM May 19, 2022Observed: 6.37 ft at 4:15AM May 19, 2022Observed: 6.43 ft at 4:30AM May 19, 2022Observed: 6.49 ft at 4:45AM May 19, 2022Observed: 6.52 ft at 5:00AM May 19, 2022Highest Observation: 6.54 ft at 5:15AM May 19, 2022Observed: 6.53 ft at 5:30AM May 19, 2022Observed: 6.51 ft at 5:45AM May 19, 2022Observed: 6.45 ft at 6:00AM May 19, 2022Observed: 6.34 ft at 6:15AM May 19, 2022Observed: 6.2 ft at 6:30AM May 19, 2022Observed: 6.03 ft at 6:45AM May 19, 2022Observed: 5.81 ft at 7:00AM May 19, 2022Observed: 5.56 ft at 7:15AM May 19, 2022Observed: 5.3 ft at 7:30AM May 19, 2022Observed: 5.03 ft at 7:45AM May 19, 2022Observed: 4.8 ft at 8:00AM May 19, 2022Observed: 4.57 ft at 8:15AM May 19, 2022Observed: 4.38 ft at 8:30AM May 19, 2022Observed: 4.2 ft at 8:45AM May 19, 2022Observed: 4.08 ft at 9:00AM May 19, 2022Observed: 3.9 ft at 9:15AM May 19, 2022Observed: 3.73 ft at 9:30AM May 19, 2022Observed: 3.58 ft at 9:45AM May 19, 2022Observed: 3.42 ft at 10:00AM May 19, 2022Observed: 3.24 ft at 10:15AM May 19, 2022Observed: 3.09 ft at 10:30AM May 19, 2022Observed: 2.93 ft at 10:45AM May 19, 2022Observed: 2.75 ft at 11:00AM May 19, 2022Observed: 2.6 ft at 11:15AM May 19, 2022Observed: 2.42 ft at 11:30AM May 19, 2022Observed: 2.26 ft at 11:45AM May 19, 2022Observed: 2.13 ft at 12:00PM May 19, 2022Observed: 2 ft at 12:15PM May 19, 2022Observed: 1.88 ft at 12:30PM May 19, 2022Observed: 1.71 ft at 12:45PM May 19, 2022Observed: 1.58 ft at 1:00PM May 19, 2022Observed: 1.48 ft at 1:15PM May 19, 2022Observed: 1.39 ft at 1:30PM May 19, 2022Observed: 1.34 ft at 1:45PM May 19, 2022Observed: 1.32 ft at 2:00PM May 19, 2022Observed: 1.36 ft at 2:15PM May 19, 2022Observed: 1.45 ft at 2:30PM May 19, 2022Observed: 1.61 ft at 2:45PM May 19, 2022Observed: 1.84 ft at 3:00PM May 19, 2022Observed: 2.11 ft at 3:15PM May 19, 2022Observed: 2.42 ft at 3:30PM May 19, 2022Observed: 2.72 ft at 3:45PM May 19, 2022Observed: 3.04 ft at 4:00PM May 19, 2022Observed: 3.34 ft at 4:15PM May 19, 2022Observed: 3.6 ft at 4:30PM May 19, 2022Observed: 3.83 ft at 4:45PM May 19, 2022Observed: 4 ft at 5:00PM May 19, 2022Observed: 4.14 ft at 5:15PM May 19, 2022Observed: 4.24 ft at 5:30PM May 19, 2022Observed: 4.35 ft at 5:45PM May 19, 2022Observed: 4.45 ft at 6:00PM May 19, 2022Observed: 4.54 ft at 6:15PM May 19, 2022Observed: 4.62 ft at 6:30PM May 19, 2022Observed: 4.69 ft at 6:45PM May 19, 2022Observed: 4.77 ft at 7:00PM May 19, 2022Observed: 4.85 ft at 7:15PM May 19, 2022Observed: 4.92 ft at 7:30PM May 19, 2022Observed: 4.97 ft at 7:45PM May 19, 2022Observed: 5.03 ft at 8:00PM May 19, 2022Observed: 5.07 ft at 8:15PM May 19, 2022Observed: 5.08 ft at 8:30PM May 19, 2022Observed: 5.08 ft at 8:45PM May 19, 2022Observed: 5.05 ft at 9:00PM May 19, 2022Observed: 4.98 ft at 9:15PM May 19, 2022Observed: 4.91 ft at 9:30PM May 19, 2022Observed: 4.81 ft at 9:45PM May 19, 2022Observed: 4.69 ft at 10:00PM May 19, 2022Observed: 4.56 ft at 10:15PM May 19, 2022Observed: 4.42 ft at 10:30PM May 19, 2022Observed: 4.29 ft at 10:45PM May 19, 2022Observed: 4.18 ft at 11:00PM May 19, 2022Observed: 4.08 ft at 11:15PM May 19, 2022Observed: 4 ft at 11:30PM May 19, 2022Observed: 3.95 ft at 11:45PM May 19, 2022Observed: 3.91 ft at 12:00AM May 20, 2022Observed: 3.91 ft at 12:15AM May 20, 2022Observed: 3.93 ft at 12:30AM May 20, 2022Observed: 3.98 ft at 12:45AM May 20, 2022Observed: 4.05 ft at 1:00AM May 20, 2022Observed: 4.16 ft at 1:15AM May 20, 2022Observed: 4.28 ft at 1:30AM May 20, 2022Observed: 4.42 ft at 1:45AM May 20, 2022Observed: 4.58 ft at 2:00AM May 20, 2022Observed: 4.76 ft at 2:15AM May 20, 2022Observed: 4.94 ft at 2:30AM May 20, 2022Observed: 5.1 ft at 2:45AM May 20, 2022Observed: 5.29 ft at 3:00AM May 20, 2022Observed: 5.45 ft at 3:15AM May 20, 2022Observed: 5.58 ft at 3:30AM May 20, 2022Observed: 5.73 ft at 3:45AM May 20, 2022Observed: 5.85 ft at 4:00AM May 20, 2022Observed: 5.97 ft at 4:15AM May 20, 2022Observed: 6.07 ft at 4:30AM May 20, 2022Observed: 6.14 ft at 4:45AM May 20, 2022Observed: 6.24 ft at 5:00AM May 20, 2022Observed: 6.29 ft at 5:15AM May 20, 2022Observed: 6.36 ft at 5:30AM May 20, 2022Observed: 6.37 ft at 5:45AM May 20, 2022Observed: 6.4 ft at 6:00AM May 20, 2022Observed: 6.4 ft at 6:15AM May 20, 2022Observed: 6.36 ft at 6:30AM May 20, 2022Observed: 6.33 ft at 6:45AM May 20, 2022Observed: 6.24 ft at 7:00AM May 20, 2022Observed: 6.13 ft at 7:15AM May 20, 2022Observed: 5.99 ft at 7:30AM May 20, 2022Observed: 5.78 ft at 7:45AM May 20, 2022Observed: 5.59 ft at 8:00AM May 20, 2022Observed: 5.35 ft at 8:15AM May 20, 2022Observed: 5.13 ft at 8:30AM May 20, 2022Observed: 4.9 ft at 8:45AM May 20, 2022Observed: 4.69 ft at 9:00AM May 20, 2022Observed: 4.47 ft at 9:15AM May 20, 2022Observed: 4.31 ft at 9:30AM May 20, 2022Observed: 4.12 ft at 9:45AM May 20, 2022Observed: 3.94 ft at 10:00AM May 20, 2022Observed: 3.81 ft at 10:15AM May 20, 2022Observed: 3.64 ft at 10:30AM May 20, 2022Observed: 3.42 ft at 10:45AM May 20, 2022Observed: 3.32 ft at 11:00AM May 20, 2022Observed: 3.14 ft at 11:15AM May 20, 2022Observed: 2.98 ft at 11:30AM May 20, 2022Observed: 2.83 ft at 11:45AM May 20, 2022Observed: 2.69 ft at 12:00PM May 20, 2022Observed: 2.52 ft at 12:15PM May 20, 2022Observed: 2.37 ft at 12:30PM May 20, 2022Observed: 2.18 ft at 12:45PM May 20, 2022Observed: 2.04 ft at 1:00PM May 20, 2022Observed: 1.91 ft at 1:15PM May 20, 2022Observed: 1.77 ft at 1:30PM May 20, 2022Observed: 1.62 ft at 1:45PM May 20, 2022Observed: 1.52 ft at 2:00PM May 20, 2022Observed: 1.4 ft at 2:15PM May 20, 2022Observed: 1.33 ft at 2:30PM May 20, 2022Observed: 1.27 ft at 2:45PM May 20, 2022Observed: 1.26 ft at 3:00PM May 20, 2022Observed: 1.32 ft at 3:15PM May 20, 2022Observed: 1.42 ft at 3:30PM May 20, 2022Observed: 1.59 ft at 3:45PM May 20, 2022Observed: 1.82 ft at 4:00PM May 20, 2022Observed: 2.12 ft at 4:15PM May 20, 2022Observed: 2.43 ft at 4:30PM May 20, 2022Observed: 2.75 ft at 4:45PM May 20, 2022Observed: 3.06 ft at 5:00PM May 20, 2022Observed: 3.36 ft at 5:15PM May 20, 2022Observed: 3.62 ft at 5:30PM May 20, 2022Observed: 3.85 ft at 5:45PM May 20, 2022Observed: 4.02 ft at 6:00PM May 20, 2022Observed: 4.18 ft at 6:15PM May 20, 2022Observed: 4.29 ft at 6:30PM May 20, 2022Observed: 4.4 ft at 6:45PM May 20, 2022Observed: 4.5 ft at 7:00PM May 20, 2022Observed: 4.59 ft at 7:15PM May 20, 2022Observed: 4.67 ft at 7:30PM May 20, 2022Observed: 4.75 ft at 7:45PM May 20, 2022Observed: 4.84 ft at 8:00PM May 20, 2022Observed: 4.9 ft at 8:15PM May 20, 2022Observed: 4.98 ft at 8:30PM May 20, 2022Observed: 5.04 ft at 8:45PM May 20, 2022Observed: 5.09 ft at 9:00PM May 20, 2022Observed: 5.12 ft at 9:15PM May 20, 2022Observed: 5.14 ft at 9:30PM May 20, 2022Observed: 5.14 ft at 9:45PM May 20, 2022Observed: 5.11 ft at 10:00PM May 20, 2022Observed: 5.07 ft at 10:15PM May 20, 2022Observed: 5 ft at 10:30PM May 20, 2022Observed: 4.91 ft at 10:45PM May 20, 2022Observed: 4.79 ft at 11:00PM May 20, 2022Observed: 4.66 ft at 11:15PM May 20, 2022Observed: 4.53 ft at 11:30PM May 20, 2022Observed: 4.39 ft at 11:45PM May 20, 2022Observed: 4.27 ft at 12:00AM May 21, 2022Observed: 4.17 ft at 12:15AM May 21, 2022Observed: 4.07 ft at 12:30AM May 21, 2022Observed: 3.98 ft at 12:45AM May 21, 2022Observed: 3.94 ft at 1:00AM May 21, 2022Observed: 3.9 ft at 1:15AM May 21, 2022Observed: 3.89 ft at 1:30AM May 21, 2022Observed: 3.9 ft at 1:45AM May 21, 2022Observed: 3.92 ft at 2:00AM May 21, 2022Observed: 3.99 ft at 2:15AM May 21, 2022Observed: 4.06 ft at 2:30AM May 21, 2022Observed: 4.17 ft at 2:45AM May 21, 2022Observed: 4.31 ft at 3:00AM May 21, 2022Observed: 4.45 ft at 3:15AM May 21, 2022Observed: 4.62 ft at 3:30AM May 21, 2022Observed: 4.8 ft at 3:45AM May 21, 2022Observed: 4.97 ft at 4:00AM May 21, 2022Observed: 5.13 ft at 4:15AM May 21, 2022Observed: 5.29 ft at 4:30AM May 21, 2022Observed: 5.43 ft at 4:45AM May 21, 2022Observed: 5.55 ft at 5:00AM May 21, 2022Observed: 5.66 ft at 5:15AM May 21, 2022Observed: 5.76 ft at 5:30AM May 21, 2022Observed: 5.86 ft at 5:45AM May 21, 2022Observed: 5.94 ft at 6:00AM May 21, 2022Observed: 6.02 ft at 6:15AM May 21, 2022Observed: 6.07 ft at 6:30AM May 21, 2022Observed: 6.12 ft at 6:45AM May 21, 2022Observed: 6.14 ft at 7:00AM May 21, 2022Observed: 6.15 ft at 7:15AM May 21, 2022Observed: 6.11 ft at 7:30AM May 21, 2022Observed: 6.07 ft at 7:45AM May 21, 2022Observed: 6 ft at 8:00AM May 21, 2022Observed: 5.89 ft at 8:15AM May 21, 2022Observed: 5.75 ft at 8:30AM May 21, 2022Observed: 5.57 ft at 8:45AM May 21, 2022Observed: 5.37 ft at 9:00AM May 21, 2022Observed: 5.16 ft at 9:15AM May 21, 2022Observed: 4.93 ft at 9:30AM May 21, 2022Observed: 4.71 ft at 9:45AM May 21, 2022Observed: 4.51 ft at 10:00AM May 21, 2022Observed: 4.32 ft at 10:15AM May 21, 2022Observed: 4.15 ft at 10:30AM May 21, 2022Observed: 3.98 ft at 10:45AM May 21, 2022Observed: 3.82 ft at 11:00AM May 21, 2022Observed: 3.66 ft at 11:15AM May 21, 2022Observed: 3.47 ft at 11:30AM May 21, 2022Observed: 3.31 ft at 11:45AM May 21, 2022Observed: 3.15 ft at 12:00PM May 21, 2022Observed: 2.99 ft at 12:15PM May 21, 2022Observed: 2.85 ft at 12:30PM May 21, 2022Observed: 2.68 ft at 12:45PM May 21, 2022Observed: 2.53 ft at 1:00PM May 21, 2022Observed: 2.39 ft at 1:15PM May 21, 2022Observed: 2.24 ft at 1:30PM May 21, 2022Observed: 2.09 ft at 1:45PM May 21, 2022Observed: 1.97 ft at 2:00PM May 21, 2022Observed: 1.82 ft at 2:15PM May 21, 2022Observed: 1.69 ft at 2:30PM May 21, 2022Observed: 1.59 ft at 2:45PM May 21, 2022Observed: 1.5 ft at 3:00PM May 21, 2022Observed: 1.41 ft at 3:15PM May 21, 2022Observed: 1.36 ft at 3:30PM May 21, 2022Observed: 1.35 ft at 3:45PM May 21, 2022Observed: 1.37 ft at 4:00PM May 21, 2022Observed: 1.46 ft at 4:15PM May 21, 2022Observed: 1.61 ft at 4:30PM May 21, 2022Observed: 1.82 ft at 4:45PM May 21, 2022Observed: 2.08 ft at 5:00PM May 21, 2022Observed: 2.37 ft at 5:15PM May 21, 2022Observed: 2.67 ft at 5:30PM May 21, 2022Observed: 2.98 ft at 5:45PM May 21, 2022Observed: 3.28 ft at 6:00PM May 21, 2022Observed: 3.54 ft at 6:15PM May 21, 2022Observed: 3.78 ft at 6:30PM May 21, 2022Observed: 3.99 ft at 6:45PM May 21, 2022Observed: 4.14 ft at 7:00PM May 21, 2022Observed: 4.27 ft at 7:15PM May 21, 2022Observed: 4.39 ft at 7:30PM May 21, 2022Observed: 4.48 ft at 7:45PM May 21, 2022Observed: 4.57 ft at 8:00PM May 21, 2022Observed: 4.66 ft at 8:15PM May 21, 2022Observed: 4.75 ft at 8:30PM May 21, 2022Observed: 4.85 ft at 8:45PM May 21, 2022Observed: 4.93 ft at 9:00PM May 21, 2022Observed: 5.01 ft at 9:15PM May 21, 2022Observed: 5.08 ft at 9:30PM May 21, 2022Observed: 5.15 ft at 9:45PM May 21, 2022Observed: 5.19 ft at 10:00PM May 21, 2022Observed: 5.23 ft at 10:15PM May 21, 2022Observed: 5.25 ft at 10:30PM May 21, 2022Observed: 5.25 ft at 10:45PM May 21, 2022Observed: 5.22 ft at 11:00PM May 21, 2022Observed: 5.18 ft at 11:15PM May 21, 2022Observed: 5.1 ft at 11:30PM May 21, 2022Observed: 5.01 ft at 11:45PM May 21, 2022Observed: 4.9 ft at 12:00AM May 22, 2022Observed: 4.76 ft at 12:15AM May 22, 2022Observed: 4.62 ft at 12:30AM May 22, 2022Observed: 4.47 ft at 12:45AM May 22, 2022Observed: 4.34 ft at 1:00AM May 22, 2022Observed: 4.21 ft at 1:15AM May 22, 2022Observed: 4.09 ft at 1:30AM May 22, 2022Observed: 3.99 ft at 1:45AM May 22, 2022Observed: 3.92 ft at 2:00AM May 22, 2022Observed: 3.85 ft at 2:15AM May 22, 2022Observed: 3.8 ft at 2:30AM May 22, 2022Observed: 3.76 ft at 2:45AM May 22, 2022Observed: 3.74 ft at 3:00AM May 22, 2022Observed: 3.76 ft at 3:30AM May 22, 2022Observed: 3.8 ft at 3:45AM May 22, 2022Observed: 3.88 ft at 4:00AM May 22, 2022Observed: 3.98 ft at 4:15AM May 22, 2022Observed: 4.1 ft at 4:30AM May 22, 2022Observed: 4.24 ft at 4:45AM May 22, 2022Observed: 4.37 ft at 5:00AM May 22, 2022Observed: 4.52 ft at 5:15AM May 22, 2022Observed: 4.7 ft at 5:30AM May 22, 2022Observed: 4.86 ft at 5:45AM May 22, 2022Observed: 4.99 ft at 6:00AM May 22, 2022Observed: 5.13 ft at 6:15AM May 22, 2022Observed: 5.23 ft at 6:30AM May 22, 2022Observed: 5.33 ft at 6:45AM May 22, 2022Observed: 5.42 ft at 7:00AM May 22, 2022Observed: 5.49 ft at 7:15AM May 22, 2022Observed: 5.56 ft at 7:30AM May 22, 2022Observed: 5.63 ft at 7:45AM May 22, 2022Observed: 5.66 ft at 8:00AM May 22, 2022Observed: 5.69 ft at 8:15AM May 22, 2022Observed: 5.66 ft at 8:30AM May 22, 2022Observed: 5.67 ft at 8:45AM May 22, 2022Observed: 5.59 ft at 9:00AM May 22, 2022Observed: 5.52 ft at 9:15AM May 22, 2022Observed: 5.42 ft at 9:30AM May 22, 2022Observed: 5.29 ft at 9:45AM May 22, 2022Observed: 5.13 ft at 10:00AM May 22, 2022Observed: 4.94 ft at 10:15AM May 22, 2022Observed: 4.73 ft at 10:30AM May 22, 2022Observed: 4.52 ft at 10:45AM May 22, 2022Observed: 4.31 ft at 11:00AM May 22, 2022Observed: 4.11 ft at 11:15AM May 22, 2022Observed: 3.93 ft at 11:30AM May 22, 2022Observed: 3.77 ft at 11:45AM May 22, 2022Observed: 3.6 ft at 12:00PM May 22, 2022Observed: 3.45 ft at 12:15PM May 22, 2022Observed: 3.29 ft at 12:30PM May 22, 2022Observed: 3.14 ft at 12:45PM May 22, 2022Observed: 2.97 ft at 1:00PM May 22, 2022Observed: 2.81 ft at 1:15PM May 22, 2022Observed: 2.66 ft at 1:30PM May 22, 2022Observed: 2.49 ft at 1:45PM May 22, 2022Observed: 2.36 ft at 2:00PM May 22, 2022Observed: 2.22 ft at 2:15PM May 22, 2022Observed: 2.09 ft at 2:30PM May 22, 2022Observed: 1.96 ft at 2:45PM May 22, 2022Observed: 1.83 ft at 3:00PM May 22, 2022Observed: 1.71 ft at 3:15PM May 22, 2022Observed: 1.61 ft at 3:30PM May 22, 2022Observed: 1.5 ft at 3:45PM May 22, 2022Observed: 1.44 ft at 4:00PM May 22, 2022Observed: 1.36 ft at 4:15PM May 22, 2022Observed: 1.32 ft at 4:30PM May 22, 2022Observed: 1.33 ft at 4:45PM May 22, 2022Observed: 1.41 ft at 5:00PM May 22, 2022Observed: 1.56 ft at 5:15PM May 22, 2022Observed: 1.75 ft at 5:30PM May 22, 2022Observed: 2 ft at 5:45PM May 22, 2022Observed: 2.29 ft at 6:00PM May 22, 2022Observed: 2.58 ft at 6:15PM May 22, 2022Observed: 2.89 ft at 6:30PM May 22, 2022Observed: 3.16 ft at 6:45PM May 22, 2022Observed: 3.44 ft at 7:00PM May 22, 2022Observed: 3.66 ft at 7:15PM May 22, 2022Observed: 3.85 ft at 7:30PM May 22, 2022Observed: 4.02 ft at 7:45PM May 22, 2022Observed: 4.17 ft at 8:00PM May 22, 2022Observed: 4.3 ft at 8:15PM May 22, 2022Observed: 4.42 ft at 8:30PM May 22, 2022Observed: 4.62 ft at 9:00PM May 22, 2022Observed: 4.73 ft at 9:15PM May 22, 2022Observed: 4.82 ft at 9:30PM May 22, 2022Observed: 4.92 ft at 9:45PM May 22, 2022Observed: 5 ft at 10:00PM May 22, 2022Observed: 5.08 ft at 10:15PM May 22, 2022Observed: 5.16 ft at 10:30PM May 22, 2022Observed: 5.21 ft at 10:45PM May 22, 2022Observed: 5.27 ft at 11:00PM May 22, 2022Observed: 5.29 ft at 11:15PM May 22, 2022Observed: 5.3 ft at 11:30PM May 22, 2022Observed: 5.29 ft at 11:45PM May 22, 2022Observed: 5.25 ft at 12:00AM May 23, 2022Observed: 5.18 ft at 12:15AM May 23, 2022Observed: 5.09 ft at 12:30AM May 23, 2022Observed: 4.98 ft at 12:45AM May 23, 2022Observed: 4.84 ft at 1:00AM May 23, 2022Observed: 4.68 ft at 1:15AM May 23, 2022Observed: 4.52 ft at 1:30AM May 23, 2022Observed: 4.34 ft at 1:45AM May 23, 2022Observed: 4.16 ft at 2:00AM May 23, 2022Observed: 4.01 ft at 2:15AM May 23, 2022Observed: 3.86 ft at 2:30AM May 23, 2022Observed: 3.75 ft at 2:45AM May 23, 2022Observed: 3.66 ft at 3:00AM May 23, 2022Observed: 3.57 ft at 3:15AM May 23, 2022Observed: 3.48 ft at 3:30AM May 23, 2022Observed: 3.42 ft at 3:45AM May 23, 2022Observed: 3.35 ft at 4:00AM May 23, 2022Observed: 3.28 ft at 4:15AM May 23, 2022Observed: 3.26 ft at 4:30AM May 23, 2022Observed: 3.25 ft at 4:45AM May 23, 2022Observed: 3.25 ft at 5:00AM May 23, 2022Observed: 3.3 ft at 5:15AM May 23, 2022Observed: 3.37 ft at 5:30AM May 23, 2022Observed: 3.47 ft at 5:45AM May 23, 2022Observed: 3.6 ft at 6:00AM May 23, 2022Observed: 3.73 ft at 6:15AM May 23, 2022Observed: 3.92 ft at 6:30AM May 23, 2022Observed: 4.1 ft at 6:45AM May 23, 2022Observed: 4.27 ft at 7:00AM May 23, 2022Observed: 4.44 ft at 7:15AM May 23, 2022Observed: 4.58 ft at 7:30AM May 23, 2022Observed: 4.72 ft at 7:45AM May 23, 2022Observed: 4.83 ft at 8:00AM May 23, 2022Observed: 4.92 ft at 8:15AM May 23, 2022Observed: 5.01 ft at 8:30AM May 23, 2022Observed: 5.08 ft at 8:45AM May 23, 2022Observed: 5.14 ft at 9:00AM May 23, 2022Observed: 5.17 ft at 9:15AM May 23, 2022Observed: 5.22 ft at 9:30AM May 23, 2022Observed: 5.2 ft at 9:45AM May 23, 2022Observed: 5.23 ft at 10:00AM May 23, 2022Observed: 5.2 ft at 10:15AM May 23, 2022Observed: 5.15 ft at 10:30AM May 23, 2022Forecast: 1.7 ft 5:15PM May 23, 2022Forecast: 5.6 ft 12:15AM May 24, 2022Forecast: 3.2 ft 6:00AM May 24, 2022Forecast: 5.4 ft 11:30AM May 24, 2022Forecast: 2 ft 6:00PM May 24, 2022Highest Forecast: 5.8 ft 1:00AM May 25, 2022Forecast: 2.8 ft 7:15AM May 25, 2022Forecast: 5.2 ft 1:00PM May 25, 2022Forecast: 2.2 ft 6:45PM May 25, 2022ATIC1(plotting HGIRG) Graph Created (10:53AM May 23, 2022)ObservedForecast (issued 6:26AM May 23)Latest observed value: 5.15 ft at 10:30 AM PDT 23-May-2022.
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Tabular Data (PDT)
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Datum: NAVD88
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NOTE: Forecasts for the Sacramento-San Joaquin Delta at Antioch are issued routinely year-round.
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Downstream Gauge Downstream Gauge - at Mallard Island
Flood Categories (in feet)
Not Available

Historic Crests

(P): Preliminary values subject to further review.

Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:13
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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.
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Latitude: 38.017778° N, Longitude: 121.803056° W, Horizontal Datum: NAD83/WGS84

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