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Hydrograph River at a Glance Download
San Lorenzo River (CA) at Big Trees Stage (ft)Flow (kcfs)Observed: 3.16 ft at 7:00PM Oct 20, 2021Observed: 3.17 ft at 7:15PM Oct 20, 2021Observed: 3.2 ft at 7:30PM Oct 20, 2021Observed: 3.22 ft at 7:45PM Oct 20, 2021Observed: 3.25 ft at 8:00PM Oct 20, 2021Observed: 3.26 ft at 8:15PM Oct 20, 2021Observed: 3.27 ft at 8:30PM Oct 20, 2021Observed: 3.27 ft at 8:45PM Oct 20, 2021Observed: 3.28 ft at 9:00PM Oct 20, 2021Observed: 3.28 ft at 9:15PM Oct 20, 2021Observed: 3.28 ft at 9:30PM Oct 20, 2021Observed: 3.28 ft at 9:45PM Oct 20, 2021Observed: 3.29 ft at 10:00PM Oct 20, 2021Observed: 3.31 ft at 10:15PM Oct 20, 2021Observed: 3.33 ft at 10:30PM Oct 20, 2021Observed: 3.35 ft at 10:45PM Oct 20, 2021Observed: 3.37 ft at 11:00PM Oct 20, 2021Observed: 3.38 ft at 11:15PM Oct 20, 2021Observed: 3.38 ft at 11:30PM Oct 20, 2021Observed: 3.39 ft at 11:45PM Oct 20, 2021Observed: 3.39 ft at 12:00AM Oct 21, 2021Observed: 3.4 ft at 12:15AM Oct 21, 2021Observed: 3.41 ft at 12:30AM Oct 21, 2021Observed: 3.44 ft at 12:45AM Oct 21, 2021Observed: 3.47 ft at 1:00AM Oct 21, 2021Observed: 3.52 ft at 1:15AM Oct 21, 2021Observed: 3.55 ft at 1:30AM Oct 21, 2021Observed: 3.58 ft at 1:45AM Oct 21, 2021Observed: 3.61 ft at 2:00AM Oct 21, 2021Observed: 3.63 ft at 2:15AM Oct 21, 2021Observed: 3.64 ft at 2:30AM Oct 21, 2021Observed: 3.63 ft at 2:45AM Oct 21, 2021Observed: 3.61 ft at 3:00AM Oct 21, 2021Observed: 3.59 ft at 3:15AM Oct 21, 2021Observed: 3.57 ft at 3:30AM Oct 21, 2021Observed: 3.56 ft at 3:45AM Oct 21, 2021Observed: 3.57 ft at 4:00AM Oct 21, 2021Observed: 3.59 ft at 4:15AM Oct 21, 2021Observed: 3.6 ft at 4:30AM Oct 21, 2021Observed: 3.6 ft at 4:45AM Oct 21, 2021Observed: 3.59 ft at 5:00AM Oct 21, 2021Observed: 3.57 ft at 5:15AM Oct 21, 2021Observed: 3.56 ft at 5:30AM Oct 21, 2021Observed: 3.55 ft at 5:45AM Oct 21, 2021Observed: 3.54 ft at 6:00AM Oct 21, 2021Observed: 3.54 ft at 6:15AM Oct 21, 2021Observed: 3.54 ft at 6:30AM Oct 21, 2021Observed: 3.54 ft at 6:45AM Oct 21, 2021Observed: 3.53 ft at 7:00AM Oct 21, 2021Observed: 3.53 ft at 7:15AM Oct 21, 2021Observed: 3.53 ft at 7:30AM Oct 21, 2021Observed: 3.53 ft at 7:45AM Oct 21, 2021Observed: 3.52 ft at 8:00AM Oct 21, 2021Observed: 3.52 ft at 8:15AM Oct 21, 2021Observed: 3.51 ft at 8:30AM Oct 21, 2021Observed: 3.51 ft at 8:45AM Oct 21, 2021Observed: 3.52 ft at 9:00AM Oct 21, 2021Observed: 3.53 ft at 9:15AM Oct 21, 2021Observed: 3.53 ft at 9:30AM Oct 21, 2021Observed: 3.54 ft at 9:45AM Oct 21, 2021Observed: 3.55 ft at 10:00AM Oct 21, 2021Observed: 3.55 ft at 10:15AM Oct 21, 2021Observed: 3.55 ft at 10:30AM Oct 21, 2021Observed: 3.55 ft at 10:45AM Oct 21, 2021Observed: 3.55 ft at 11:00AM Oct 21, 2021Observed: 3.55 ft at 11:15AM Oct 21, 2021Observed: 3.54 ft at 11:30AM Oct 21, 2021Observed: 3.54 ft at 11:45AM Oct 21, 2021Observed: 3.53 ft at 12:00PM Oct 21, 2021Observed: 3.52 ft at 12:15PM Oct 21, 2021Observed: 3.51 ft at 12:30PM Oct 21, 2021Observed: 3.5 ft at 12:45PM Oct 21, 2021Observed: 3.5 ft at 1:00PM Oct 21, 2021Observed: 3.49 ft at 1:15PM Oct 21, 2021Observed: 3.48 ft at 1:30PM Oct 21, 2021Observed: 3.47 ft at 1:45PM Oct 21, 2021Observed: 3.47 ft at 2:00PM Oct 21, 2021Observed: 3.46 ft at 2:15PM Oct 21, 2021Observed: 3.46 ft at 2:30PM Oct 21, 2021Observed: 3.45 ft at 2:45PM Oct 21, 2021Observed: 3.45 ft at 3:00PM Oct 21, 2021Observed: 3.45 ft at 3:15PM Oct 21, 2021Observed: 3.44 ft at 3:30PM Oct 21, 2021Observed: 3.44 ft at 3:45PM Oct 21, 2021Observed: 3.44 ft at 4:00PM Oct 21, 2021Observed: 3.43 ft at 4:15PM Oct 21, 2021Observed: 3.43 ft at 4:30PM Oct 21, 2021Observed: 3.43 ft at 4:45PM Oct 21, 2021Observed: 3.43 ft at 5:00PM Oct 21, 2021Observed: 3.42 ft at 5:15PM Oct 21, 2021Observed: 3.42 ft at 5:30PM Oct 21, 2021Observed: 3.41 ft at 5:45PM Oct 21, 2021Observed: 3.41 ft at 6:00PM Oct 21, 2021Observed: 3.41 ft at 6:15PM Oct 21, 2021Observed: 3.4 ft at 6:30PM Oct 21, 2021Observed: 3.4 ft at 6:45PM Oct 21, 2021Observed: 3.4 ft at 7:00PM Oct 21, 2021Observed: 3.39 ft at 7:15PM Oct 21, 2021Observed: 3.39 ft at 7:30PM Oct 21, 2021Observed: 3.38 ft at 7:45PM Oct 21, 2021Observed: 3.38 ft at 8:00PM Oct 21, 2021Observed: 3.38 ft at 8:15PM Oct 21, 2021Observed: 3.37 ft at 8:30PM Oct 21, 2021Observed: 3.37 ft at 8:45PM Oct 21, 2021Observed: 3.36 ft at 9:00PM Oct 21, 2021Observed: 3.36 ft at 9:15PM Oct 21, 2021Observed: 3.36 ft at 9:30PM Oct 21, 2021Observed: 3.35 ft at 9:45PM Oct 21, 2021Observed: 3.35 ft at 10:00PM Oct 21, 2021Observed: 3.34 ft at 10:15PM Oct 21, 2021Observed: 3.34 ft at 10:30PM Oct 21, 2021Observed: 3.33 ft at 10:45PM Oct 21, 2021Observed: 3.33 ft at 11:00PM Oct 21, 2021Observed: 3.33 ft at 11:15PM Oct 21, 2021Observed: 3.32 ft at 11:30PM Oct 21, 2021Observed: 3.32 ft at 11:45PM Oct 21, 2021Observed: 3.32 ft at 12:00AM Oct 22, 2021Observed: 3.31 ft at 12:15AM Oct 22, 2021Observed: 3.31 ft at 12:30AM Oct 22, 2021Observed: 3.31 ft at 12:45AM Oct 22, 2021Observed: 3.3 ft at 1:00AM Oct 22, 2021Observed: 3.3 ft at 1:15AM Oct 22, 2021Observed: 3.3 ft at 1:30AM Oct 22, 2021Observed: 3.29 ft at 1:45AM Oct 22, 2021Observed: 3.29 ft at 2:00AM Oct 22, 2021Observed: 3.29 ft at 2:15AM Oct 22, 2021Observed: 3.28 ft at 2:30AM Oct 22, 2021Observed: 3.28 ft at 2:45AM Oct 22, 2021Observed: 3.28 ft at 3:00AM Oct 22, 2021Observed: 3.28 ft at 3:15AM Oct 22, 2021Observed: 3.28 ft at 3:30AM Oct 22, 2021Observed: 3.28 ft at 3:45AM Oct 22, 2021Observed: 3.27 ft at 4:00AM Oct 22, 2021Observed: 3.27 ft at 4:15AM Oct 22, 2021Observed: 3.27 ft at 4:30AM Oct 22, 2021Observed: 3.27 ft at 4:45AM Oct 22, 2021Observed: 3.27 ft at 5:00AM Oct 22, 2021Observed: 3.27 ft at 5:15AM Oct 22, 2021Observed: 3.28 ft at 5:30AM Oct 22, 2021Observed: 3.34 ft at 5:45AM Oct 22, 2021Observed: 3.42 ft at 6:00AM Oct 22, 2021Observed: 3.51 ft at 6:15AM Oct 22, 2021Observed: 3.72 ft at 6:30AM Oct 22, 2021Observed: 3.87 ft at 6:45AM Oct 22, 2021Observed: 3.96 ft at 7:00AM Oct 22, 2021Observed: 3.99 ft at 7:15AM Oct 22, 2021Observed: 3.97 ft at 7:30AM Oct 22, 2021Observed: 3.93 ft at 7:45AM Oct 22, 2021Observed: 3.87 ft at 8:00AM Oct 22, 2021Observed: 3.88 ft at 8:15AM Oct 22, 2021Observed: 3.96 ft at 8:30AM Oct 22, 2021Observed: 3.98 ft at 8:45AM Oct 22, 2021Observed: 3.96 ft at 9:00AM Oct 22, 2021Observed: 3.92 ft at 9:15AM Oct 22, 2021Observed: 3.88 ft at 9:30AM Oct 22, 2021Observed: 3.84 ft at 9:45AM Oct 22, 2021Observed: 3.8 ft at 10:00AM Oct 22, 2021Observed: 3.77 ft at 10:15AM Oct 22, 2021Observed: 3.75 ft at 10:30AM Oct 22, 2021Observed: 3.73 ft at 10:45AM Oct 22, 2021Observed: 3.71 ft at 11:00AM Oct 22, 2021Observed: 3.7 ft at 11:15AM Oct 22, 2021Observed: 3.69 ft at 11:30AM Oct 22, 2021Observed: 3.68 ft at 11:45AM Oct 22, 2021Observed: 3.67 ft at 12:00PM Oct 22, 2021Observed: 3.65 ft at 12:15PM Oct 22, 2021Observed: 3.63 ft at 12:30PM Oct 22, 2021Observed: 3.61 ft at 12:45PM Oct 22, 2021Observed: 3.6 ft at 1:00PM Oct 22, 2021Observed: 3.58 ft at 1:15PM Oct 22, 2021Observed: 3.56 ft at 1:30PM Oct 22, 2021Observed: 3.54 ft at 1:45PM Oct 22, 2021Observed: 3.53 ft at 2:00PM Oct 22, 2021Observed: 3.51 ft at 2:15PM Oct 22, 2021Observed: 3.5 ft at 2:30PM Oct 22, 2021Observed: 3.5 ft at 2:45PM Oct 22, 2021Observed: 3.48 ft at 3:00PM Oct 22, 2021Observed: 3.47 ft at 3:15PM Oct 22, 2021Observed: 3.46 ft at 3:30PM Oct 22, 2021Observed: 3.45 ft at 3:45PM Oct 22, 2021Observed: 3.44 ft at 4:00PM Oct 22, 2021Observed: 3.44 ft at 4:15PM Oct 22, 2021Observed: 3.43 ft at 4:30PM Oct 22, 2021Observed: 3.42 ft at 4:45PM Oct 22, 2021Observed: 3.41 ft at 5:00PM Oct 22, 2021Observed: 3.41 ft at 5:15PM Oct 22, 2021Observed: 3.4 ft at 5:30PM Oct 22, 2021Observed: 3.4 ft at 5:45PM Oct 22, 2021Observed: 3.39 ft at 6:00PM Oct 22, 2021Observed: 3.38 ft at 6:15PM Oct 22, 2021Observed: 3.38 ft at 6:30PM Oct 22, 2021Observed: 3.38 ft at 6:45PM Oct 22, 2021Observed: 3.38 ft at 7:00PM Oct 22, 2021Observed: 3.39 ft at 7:15PM Oct 22, 2021Observed: 3.39 ft at 7:30PM Oct 22, 2021Observed: 3.4 ft at 7:45PM Oct 22, 2021Observed: 3.41 ft at 8:00PM Oct 22, 2021Observed: 3.42 ft at 8:15PM Oct 22, 2021Observed: 3.42 ft at 8:30PM Oct 22, 2021Observed: 3.43 ft at 8:45PM Oct 22, 2021Observed: 3.44 ft at 9:00PM Oct 22, 2021Observed: 3.45 ft at 9:15PM Oct 22, 2021Observed: 3.46 ft at 9:30PM Oct 22, 2021Observed: 3.46 ft at 9:45PM Oct 22, 2021Observed: 3.47 ft at 10:00PM Oct 22, 2021Observed: 3.47 ft at 10:15PM Oct 22, 2021Observed: 3.47 ft at 10:30PM Oct 22, 2021Observed: 3.47 ft at 10:45PM Oct 22, 2021Observed: 3.46 ft at 11:00PM Oct 22, 2021Observed: 3.46 ft at 11:15PM Oct 22, 2021Observed: 3.46 ft at 11:30PM Oct 22, 2021Observed: 3.45 ft at 11:45PM Oct 22, 2021Observed: 3.44 ft at 12:00AM Oct 23, 2021Observed: 3.44 ft at 12:15AM Oct 23, 2021Observed: 3.43 ft at 12:30AM Oct 23, 2021Observed: 3.42 ft at 12:45AM Oct 23, 2021Observed: 3.42 ft at 1:00AM Oct 23, 2021Observed: 3.41 ft at 1:15AM Oct 23, 2021Observed: 3.41 ft at 1:30AM Oct 23, 2021Observed: 3.4 ft at 1:45AM Oct 23, 2021Observed: 3.39 ft at 2:00AM Oct 23, 2021Observed: 3.39 ft at 2:15AM Oct 23, 2021Observed: 3.38 ft at 2:30AM Oct 23, 2021Observed: 3.37 ft at 2:45AM Oct 23, 2021Observed: 3.37 ft at 3:00AM Oct 23, 2021Observed: 3.36 ft at 3:15AM Oct 23, 2021Observed: 3.36 ft at 3:30AM Oct 23, 2021Observed: 3.35 ft at 3:45AM Oct 23, 2021Observed: 3.35 ft at 4:00AM Oct 23, 2021Observed: 3.34 ft at 4:15AM Oct 23, 2021Observed: 3.34 ft at 4:30AM Oct 23, 2021Observed: 3.33 ft at 4:45AM Oct 23, 2021Observed: 3.33 ft at 5:00AM Oct 23, 2021Observed: 3.32 ft at 5:15AM Oct 23, 2021Observed: 3.32 ft at 5:30AM Oct 23, 2021Observed: 3.31 ft at 5:45AM Oct 23, 2021Observed: 3.31 ft at 6:00AM Oct 23, 2021Observed: 3.31 ft at 6:15AM Oct 23, 2021Observed: 3.3 ft at 6:30AM Oct 23, 2021Observed: 3.3 ft at 6:45AM Oct 23, 2021Observed: 3.29 ft at 7:00AM Oct 23, 2021Observed: 3.29 ft at 7:15AM Oct 23, 2021Observed: 3.28 ft at 7:30AM Oct 23, 2021Observed: 3.28 ft at 7:45AM Oct 23, 2021Observed: 3.27 ft at 8:00AM Oct 23, 2021Observed: 3.27 ft at 8:15AM Oct 23, 2021Observed: 3.27 ft at 8:30AM Oct 23, 2021Observed: 3.26 ft at 8:45AM Oct 23, 2021Observed: 3.26 ft at 9:00AM Oct 23, 2021Observed: 3.25 ft at 9:15AM Oct 23, 2021Observed: 3.25 ft at 9:30AM Oct 23, 2021Observed: 3.25 ft at 9:45AM Oct 23, 2021Observed: 3.25 ft at 10:00AM Oct 23, 2021Observed: 3.25 ft at 10:15AM Oct 23, 2021Observed: 3.24 ft at 10:30AM Oct 23, 2021Observed: 3.24 ft at 10:45AM Oct 23, 2021Observed: 3.24 ft at 11:00AM Oct 23, 2021Observed: 3.24 ft at 11:15AM Oct 23, 2021Observed: 3.23 ft at 11:30AM Oct 23, 2021Observed: 3.23 ft at 11:45AM Oct 23, 2021Observed: 3.23 ft at 12:00PM Oct 23, 2021Observed: 3.22 ft at 12:15PM Oct 23, 2021Observed: 3.22 ft at 12:30PM Oct 23, 2021Observed: 3.21 ft at 12:45PM Oct 23, 2021Observed: 3.21 ft at 1:00PM Oct 23, 2021Observed: 3.21 ft at 1:15PM Oct 23, 2021Observed: 3.2 ft at 1:30PM Oct 23, 2021Observed: 3.2 ft at 1:45PM Oct 23, 2021Observed: 3.2 ft at 2:00PM Oct 23, 2021Observed: 3.19 ft at 2:15PM Oct 23, 2021Observed: 3.19 ft at 2:30PM Oct 23, 2021Observed: 3.19 ft at 2:45PM Oct 23, 2021Observed: 3.19 ft at 3:00PM Oct 23, 2021Observed: 3.18 ft at 3:15PM Oct 23, 2021Observed: 3.18 ft at 3:30PM Oct 23, 2021Observed: 3.18 ft at 3:45PM Oct 23, 2021Observed: 3.18 ft at 4:00PM Oct 23, 2021Observed: 3.17 ft at 4:15PM Oct 23, 2021Observed: 3.17 ft at 4:30PM Oct 23, 2021Observed: 3.17 ft at 4:45PM Oct 23, 2021Observed: 3.17 ft at 5:00PM Oct 23, 2021Observed: 3.16 ft at 5:15PM Oct 23, 2021Observed: 3.16 ft at 5:30PM Oct 23, 2021Observed: 3.16 ft at 5:45PM Oct 23, 2021Observed: 3.15 ft at 6:00PM Oct 23, 2021Observed: 3.15 ft at 6:15PM Oct 23, 2021Observed: 3.15 ft at 6:30PM Oct 23, 2021Observed: 3.15 ft at 6:45PM Oct 23, 2021Observed: 3.15 ft at 7:00PM Oct 23, 2021Observed: 3.14 ft at 7:15PM Oct 23, 2021Observed: 3.14 ft at 7:30PM Oct 23, 2021Observed: 3.14 ft at 7:45PM Oct 23, 2021Observed: 3.14 ft at 8:00PM Oct 23, 2021Observed: 3.14 ft at 8:15PM Oct 23, 2021Observed: 3.14 ft at 8:30PM Oct 23, 2021Observed: 3.13 ft at 8:45PM Oct 23, 2021Observed: 3.13 ft at 9:00PM Oct 23, 2021Observed: 3.13 ft at 9:15PM Oct 23, 2021Observed: 3.13 ft at 9:30PM Oct 23, 2021Observed: 3.13 ft at 9:45PM Oct 23, 2021Observed: 3.13 ft at 10:00PM Oct 23, 2021Observed: 3.13 ft at 10:15PM Oct 23, 2021Observed: 3.13 ft at 10:30PM Oct 23, 2021Observed: 3.13 ft at 10:45PM Oct 23, 2021Observed: 3.13 ft at 11:00PM Oct 23, 2021Observed: 3.14 ft at 11:15PM Oct 23, 2021Observed: 3.14 ft at 11:30PM Oct 23, 2021Observed: 3.16 ft at 11:45PM Oct 23, 2021Observed: 3.17 ft at 12:00AM Oct 24, 2021Observed: 3.19 ft at 12:15AM Oct 24, 2021Observed: 3.21 ft at 12:30AM Oct 24, 2021Observed: 3.26 ft at 12:45AM Oct 24, 2021Observed: 3.31 ft at 1:00AM Oct 24, 2021Observed: 3.33 ft at 1:15AM Oct 24, 2021Observed: 3.38 ft at 1:30AM Oct 24, 2021Observed: 3.44 ft at 1:45AM Oct 24, 2021Observed: 3.51 ft at 2:00AM Oct 24, 2021Observed: 3.58 ft at 2:15AM Oct 24, 2021Observed: 3.66 ft at 2:30AM Oct 24, 2021Observed: 3.73 ft at 2:45AM Oct 24, 2021Observed: 3.81 ft at 3:00AM Oct 24, 2021Observed: 3.88 ft at 3:15AM Oct 24, 2021Observed: 3.97 ft at 3:30AM Oct 24, 2021Observed: 4.03 ft at 3:45AM Oct 24, 2021Observed: 4.07 ft at 4:00AM Oct 24, 2021Observed: 4.13 ft at 4:15AM Oct 24, 2021Observed: 4.2 ft at 4:30AM Oct 24, 2021Observed: 4.26 ft at 4:45AM Oct 24, 2021Observed: 4.31 ft at 5:00AM Oct 24, 2021Observed: 4.36 ft at 5:15AM Oct 24, 2021Observed: 4.41 ft at 5:30AM Oct 24, 2021Observed: 4.44 ft at 5:45AM Oct 24, 2021Observed: 4.47 ft at 6:00AM Oct 24, 2021Observed: 4.53 ft at 6:15AM Oct 24, 2021Observed: 4.6 ft at 6:30AM Oct 24, 2021Observed: 4.68 ft at 6:45AM Oct 24, 2021Observed: 4.74 ft at 7:00AM Oct 24, 2021Observed: 4.8 ft at 7:15AM Oct 24, 2021Observed: 4.85 ft at 7:30AM Oct 24, 2021Observed: 4.9 ft at 7:45AM Oct 24, 2021Observed: 4.97 ft at 8:00AM Oct 24, 2021Observed: 4.99 ft at 8:15AM Oct 24, 2021Observed: 4.98 ft at 8:30AM Oct 24, 2021Observed: 4.97 ft at 8:45AM Oct 24, 2021Observed: 4.96 ft at 9:00AM Oct 24, 2021Observed: 4.99 ft at 9:15AM Oct 24, 2021Observed: 4.97 ft at 9:30AM Oct 24, 2021Observed: 4.99 ft at 9:45AM Oct 24, 2021Observed: 5 ft at 10:00AM Oct 24, 2021Observed: 4.99 ft at 10:15AM Oct 24, 2021Observed: 4.99 ft at 10:30AM Oct 24, 2021Observed: 5 ft at 10:45AM Oct 24, 2021Observed: 5.02 ft at 11:00AM Oct 24, 2021Observed: 5.1 ft at 11:15AM Oct 24, 2021Observed: 5.2 ft at 11:30AM Oct 24, 2021Observed: 5.29 ft at 11:45AM Oct 24, 2021Observed: 5.35 ft at 12:00PM Oct 24, 2021Observed: 5.38 ft at 12:15PM Oct 24, 2021Observed: 5.4 ft at 12:30PM Oct 24, 2021Observed: 5.46 ft at 12:45PM Oct 24, 2021Observed: 5.49 ft at 1:00PM Oct 24, 2021Observed: 5.5 ft at 1:15PM Oct 24, 2021Observed: 5.5 ft at 1:30PM Oct 24, 2021Observed: 5.51 ft at 1:45PM Oct 24, 2021Observed: 5.53 ft at 2:00PM Oct 24, 2021Observed: 5.58 ft at 2:15PM Oct 24, 2021Observed: 5.65 ft at 2:30PM Oct 24, 2021Observed: 5.75 ft at 2:45PM Oct 24, 2021Observed: 5.81 ft at 3:00PM Oct 24, 2021Observed: 5.85 ft at 3:15PM Oct 24, 2021Observed: 5.87 ft at 3:30PM Oct 24, 2021Observed: 5.88 ft at 3:45PM Oct 24, 2021Observed: 5.89 ft at 4:00PM Oct 24, 2021Observed: 5.91 ft at 4:15PM Oct 24, 2021Observed: 5.89 ft at 4:30PM Oct 24, 2021Observed: 5.88 ft at 4:45PM Oct 24, 2021Observed: 5.86 ft at 5:00PM Oct 24, 2021Observed: 5.89 ft at 5:15PM Oct 24, 2021Observed: 5.95 ft at 5:30PM Oct 24, 2021Observed: 6.02 ft at 5:45PM Oct 24, 2021Observed: 6.09 ft at 6:00PM Oct 24, 2021Observed: 6.19 ft at 6:15PM Oct 24, 2021Observed: 6.23 ft at 6:30PM Oct 24, 2021Observed: 6.27 ft at 6:45PM Oct 24, 2021Observed: 6.4 ft at 7:00PM Oct 24, 2021Observed: 6.53 ft at 7:15PM Oct 24, 2021Observed: 6.61 ft at 7:30PM Oct 24, 2021Observed: 6.69 ft at 7:45PM Oct 24, 2021Observed: 6.81 ft at 8:00PM Oct 24, 2021Observed: 6.98 ft at 8:15PM Oct 24, 2021Observed: 7.13 ft at 8:30PM Oct 24, 2021Observed: 7.3 ft at 8:45PM Oct 24, 2021Observed: 7.51 ft at 9:00PM Oct 24, 2021Observed: 7.68 ft at 9:15PM Oct 24, 2021Observed: 7.83 ft at 9:30PM Oct 24, 2021Observed: 7.96 ft at 9:45PM Oct 24, 2021Observed: 8.02 ft at 10:00PM Oct 24, 2021Observed: 8.13 ft at 10:15PM Oct 24, 2021Observed: 8.24 ft at 10:30PM Oct 24, 2021Observed: 8.32 ft at 10:45PM Oct 24, 2021Observed: 8.37 ft at 11:00PM Oct 24, 2021Observed: 8.41 ft at 11:15PM Oct 24, 2021Observed: 8.43 ft at 11:30PM Oct 24, 2021Observed: 8.45 ft at 11:45PM Oct 24, 2021Observed: 8.46 ft at 12:00AM Oct 25, 2021Observed: 8.45 ft at 12:15AM Oct 25, 2021Observed: 8.45 ft at 12:30AM Oct 25, 2021Highest Observation: 8.47 ft at 12:45AM Oct 25, 2021Observed: 8.46 ft at 1:00AM Oct 25, 2021Observed: 8.44 ft at 1:15AM Oct 25, 2021Observed: 8.41 ft at 1:30AM Oct 25, 2021Observed: 8.42 ft at 1:45AM Oct 25, 2021Observed: 8.4 ft at 2:00AM Oct 25, 2021Observed: 8.38 ft at 2:15AM Oct 25, 2021Observed: 8.35 ft at 2:30AM Oct 25, 2021Observed: 8.33 ft at 2:45AM Oct 25, 2021Observed: 8.32 ft at 3:00AM Oct 25, 2021Observed: 8.29 ft at 3:15AM Oct 25, 2021Observed: 8.21 ft at 3:30AM Oct 25, 2021Observed: 8.18 ft at 3:45AM Oct 25, 2021Observed: 8.16 ft at 4:00AM Oct 25, 2021Observed: 8.13 ft at 4:15AM Oct 25, 2021Observed: 8.12 ft at 4:30AM Oct 25, 2021Observed: 8.13 ft at 4:45AM Oct 25, 2021Observed: 8.12 ft at 5:00AM Oct 25, 2021Observed: 8.11 ft at 5:15AM Oct 25, 2021Observed: 8.12 ft at 5:30AM Oct 25, 2021Observed: 8.12 ft at 5:45AM Oct 25, 2021Observed: 8.11 ft at 6:00AM Oct 25, 2021Observed: 8.07 ft at 6:15AM Oct 25, 2021Observed: 8.04 ft at 6:30AM Oct 25, 2021Observed: 7.98 ft at 6:45AM Oct 25, 2021Observed: 7.92 ft at 7:00AM Oct 25, 2021Observed: 7.87 ft at 7:15AM Oct 25, 2021Observed: 7.83 ft at 7:30AM Oct 25, 2021Observed: 7.77 ft at 7:45AM Oct 25, 2021Observed: 7.73 ft at 8:00AM Oct 25, 2021Observed: 7.7 ft at 8:15AM Oct 25, 2021Observed: 7.63 ft at 8:30AM Oct 25, 2021Observed: 7.57 ft at 8:45AM Oct 25, 2021Observed: 7.52 ft at 9:00AM Oct 25, 2021Observed: 7.44 ft at 9:15AM Oct 25, 2021Observed: 7.38 ft at 9:30AM Oct 25, 2021Observed: 7.31 ft at 9:45AM Oct 25, 2021Observed: 7.24 ft at 10:00AM Oct 25, 2021Observed: 7.15 ft at 10:15AM Oct 25, 2021Observed: 7.07 ft at 10:30AM Oct 25, 2021Observed: 6.99 ft at 10:45AM Oct 25, 2021Observed: 6.93 ft at 11:00AM Oct 25, 2021Observed: 6.84 ft at 11:15AM Oct 25, 2021Observed: 6.79 ft at 11:30AM Oct 25, 2021Observed: 6.75 ft at 11:45AM Oct 25, 2021Observed: 6.69 ft at 12:00PM Oct 25, 2021Observed: 6.63 ft at 12:15PM Oct 25, 2021Observed: 6.58 ft at 12:30PM Oct 25, 2021Observed: 6.53 ft at 12:45PM Oct 25, 2021Observed: 6.48 ft at 1:00PM Oct 25, 2021Observed: 6.42 ft at 1:15PM Oct 25, 2021Observed: 6.35 ft at 1:30PM Oct 25, 2021Observed: 6.29 ft at 1:45PM Oct 25, 2021Observed: 6.24 ft at 2:00PM Oct 25, 2021Observed: 6.16 ft at 2:15PM Oct 25, 2021Observed: 6.12 ft at 2:30PM Oct 25, 2021Observed: 6.08 ft at 2:45PM Oct 25, 2021Observed: 6 ft at 3:00PM Oct 25, 2021Observed: 5.96 ft at 3:15PM Oct 25, 2021Observed: 5.91 ft at 3:30PM Oct 25, 2021Observed: 5.86 ft at 3:45PM Oct 25, 2021Observed: 5.8 ft at 4:00PM Oct 25, 2021Observed: 5.76 ft at 4:15PM Oct 25, 2021Observed: 5.7 ft at 4:30PM Oct 25, 2021Observed: 5.66 ft at 4:45PM Oct 25, 2021Observed: 5.61 ft at 5:00PM Oct 25, 2021Observed: 5.57 ft at 5:15PM Oct 25, 2021Observed: 5.53 ft at 5:30PM Oct 25, 2021Highest Forecast: 5 ft 7:00PM Oct 25, 2021Forecast: 4.8 ft 8:00PM Oct 25, 2021Forecast: 4.6 ft 9:00PM Oct 25, 2021Forecast: 4.3 ft 10:00PM Oct 25, 2021Forecast: 4.3 ft 11:00PM Oct 25, 2021Forecast: 4.2 ft 12:00AM Oct 26, 2021Forecast: 4.2 ft 1:00AM Oct 26, 2021Forecast: 4.2 ft 2:00AM Oct 26, 2021Forecast: 4.1 ft 3:00AM Oct 26, 2021Forecast: 4.1 ft 4:00AM Oct 26, 2021Forecast: 4.1 ft 5:00AM Oct 26, 2021Forecast: 4.1 ft 6:00AM Oct 26, 2021Forecast: 4 ft 7:00AM Oct 26, 2021Forecast: 4 ft 8:00AM Oct 26, 2021Forecast: 4 ft 9:00AM Oct 26, 2021Forecast: 4 ft 10:00AM Oct 26, 2021Forecast: 4 ft 11:00AM Oct 26, 2021Forecast: 3.9 ft 12:00PM Oct 26, 2021Forecast: 3.9 ft 1:00PM Oct 26, 2021Forecast: 3.9 ft 2:00PM Oct 26, 2021Forecast: 3.9 ft 3:00PM Oct 26, 2021Forecast: 3.9 ft 4:00PM Oct 26, 2021Forecast: 3.9 ft 5:00PM Oct 26, 2021Forecast: 3.8 ft 6:00PM Oct 26, 2021Forecast: 3.8 ft 7:00PM Oct 26, 2021Forecast: 3.8 ft 8:00PM Oct 26, 2021Forecast: 3.8 ft 9:00PM Oct 26, 2021Forecast: 3.8 ft 10:00PM Oct 26, 2021Forecast: 3.8 ft 11:00PM Oct 26, 2021Forecast: 3.8 ft 12:00AM Oct 27, 2021Forecast: 3.7 ft 1:00AM Oct 27, 2021Forecast: 3.7 ft 2:00AM Oct 27, 2021Forecast: 3.7 ft 3:00AM Oct 27, 2021Forecast: 3.7 ft 4:00AM Oct 27, 2021Forecast: 3.7 ft 5:00AM Oct 27, 2021Forecast: 3.7 ft 6:00AM Oct 27, 2021Forecast: 3.7 ft 7:00AM Oct 27, 2021Forecast: 3.6 ft 8:00AM Oct 27, 2021Forecast: 3.6 ft 9:00AM Oct 27, 2021Forecast: 3.6 ft 10:00AM Oct 27, 2021Forecast: 3.6 ft 11:00AM Oct 27, 2021Forecast: 3.6 ft 12:00PM Oct 27, 2021Forecast: 3.6 ft 1:00PM Oct 27, 2021Forecast: 3.6 ft 2:00PM Oct 27, 2021Forecast: 3.6 ft 3:00PM Oct 27, 2021Forecast: 3.5 ft 4:00PM Oct 27, 2021Forecast: 3.5 ft 5:00PM Oct 27, 2021Forecast: 3.5 ft 6:00PM Oct 27, 2021Forecast: 3.5 ft 7:00PM Oct 27, 2021Forecast: 3.5 ft 8:00PM Oct 27, 2021Forecast: 3.5 ft 9:00PM Oct 27, 2021Forecast: 3.5 ft 10:00PM Oct 27, 2021Forecast: 3.5 ft 11:00PM Oct 27, 2021Forecast: 3.5 ft 12:00AM Oct 28, 2021Forecast: 3.5 ft 1:00AM Oct 28, 2021Forecast: 3.4 ft 2:00AM Oct 28, 2021Forecast: 3.4 ft 3:00AM Oct 28, 2021Forecast: 3.4 ft 4:00AM Oct 28, 2021Forecast: 3.4 ft 5:00AM Oct 28, 2021Forecast: 3.4 ft 6:00AM Oct 28, 2021Forecast: 3.4 ft 7:00AM Oct 28, 2021Forecast: 3.4 ft 8:00AM Oct 28, 2021Forecast: 3.4 ft 9:00AM Oct 28, 2021Forecast: 3.4 ft 10:00AM Oct 28, 2021Forecast: 3.4 ft 11:00AM Oct 28, 2021Forecast: 3.4 ft 12:00PM Oct 28, 2021Forecast: 3.4 ft 1:00PM Oct 28, 2021Forecast: 3.3 ft 2:00PM Oct 28, 2021Forecast: 3.3 ft 3:00PM Oct 28, 2021Forecast: 3.3 ft 4:00PM Oct 28, 2021Forecast: 3.3 ft 5:00PM Oct 28, 2021Forecast: 3.3 ft 6:00PM Oct 28, 2021Forecast: 3.3 ft 7:00PM Oct 28, 2021Forecast: 3.3 ft 8:00PM Oct 28, 2021Forecast: 3.3 ft 9:00PM Oct 28, 2021Forecast: 3.3 ft 10:00PM Oct 28, 2021Forecast: 3.3 ft 11:00PM Oct 28, 2021Forecast: 3.3 ft 12:00AM Oct 29, 2021Forecast: 3.3 ft 1:00AM Oct 29, 2021Forecast: 3.3 ft 2:00AM Oct 29, 2021Forecast: 3.3 ft 3:00AM Oct 29, 2021Forecast: 3.3 ft 4:00AM Oct 29, 2021Forecast: 3.3 ft 5:00AM Oct 29, 2021Forecast: 3.3 ft 6:00AM Oct 29, 2021Forecast: 3.3 ft 7:00AM Oct 29, 2021Forecast: 3.2 ft 8:00AM Oct 29, 2021Forecast: 3.2 ft 9:00AM Oct 29, 2021Forecast: 3.2 ft 10:00AM Oct 29, 2021Forecast: 3.2 ft 11:00AM Oct 29, 2021Forecast: 3.2 ft 12:00PM Oct 29, 2021Forecast: 3.2 ft 1:00PM Oct 29, 2021Forecast: 3.2 ft 2:00PM Oct 29, 2021Forecast: 3.2 ft 3:00PM Oct 29, 2021Forecast: 3.2 ft 4:00PM Oct 29, 2021Forecast: 3.2 ft 5:00PM Oct 29, 2021Forecast: 3.2 ft 6:00PM Oct 29, 2021Forecast: 3.2 ft 7:00PM Oct 29, 2021Forecast: 3.2 ft 8:00PM Oct 29, 2021Forecast: 3.2 ft 9:00PM Oct 29, 2021Forecast: 3.2 ft 10:00PM Oct 29, 2021Forecast: 3.2 ft 11:00PM Oct 29, 2021Forecast: 3.2 ft 12:00AM Oct 30, 2021Forecast: 3.2 ft 1:00AM Oct 30, 2021Forecast: 3.2 ft 2:00AM Oct 30, 2021Forecast: 3.2 ft 3:00AM Oct 30, 2021Forecast: 3.2 ft 4:00AM Oct 30, 2021Forecast: 3.2 ft 5:00AM Oct 30, 2021USGS--Water Resources of the United StatesBTEC1(plotting HGIRG) Graph Created (6:45PM Oct 25, 2021)ObservedForecast (issued 2:44PM Oct 25)Latest observed value: 5.53 ft at 5:30 PM PDT 25-Oct-2021. Flood Stage is 16.5 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
Reliability of the Forecast: Based on unobstructed flow

NOTE: Forecasts for the San Lorenzo River (CA) at Big Trees are issued routinely year-round.

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Flood Categories (in feet)
Major Flood Stage: 21.76
Moderate Flood Stage: 19.5
Flood Stage: 16.5
Action Stage: 14
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

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
21.76 At approximately 21.76 feet discharge in the San Lorenzo River is approximately 15,000 cfs. Major flooding in the Felton Grove neighborhood occurs at this stage, with roadways several feet deep and waters inundating the approaches to the Felton Covered Bridge. Felton Covered Bridge Park begins to experience widespread flooding at shallow depths. At 15,000 cfs, the City of Santa Cruz downstream will experience more serious flooding. The flood wave may take 2-3 hours to reach Santa Cruz.
19.5 Moderate Flooding. The St. Bernard Street area in Paradise Park is under several feet of water, with below grade floodplain infrastructure several feet deeper. St. Augustine Avenue neighborhood in Paradise Park begins to flood. Flooding imminent or already occurring in the Felton Grove neighborhood. Ground stories, first floors, and garages flooded. Felton Covered Bridge Park begins to flood. NWS will issue an updated Flash Flood Warning, if not yet already issued.
16.5 Minor Flooding. Flooding is either imminent or already occurring in Paradise Park, with initial flooding in the St. Bernard Street area. NWS will issue a Flash Flood Warning, if not yet already issued.
14 Monitor Stage. Stage can rise rapidly on the San Lorenzo River, up to several feet per hour. Approximately 2.5 feet below flood levels in Paradise Park and approximately 5.5 feet below flood stage in Felton Grove. NWS may issue a Flash Flood Watch, in not yet already issued.
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Latitude: 37.044444° N, Longitude: 122.072500° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 16.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
San Francisco Bay Area Weather Forecast Office
21 Grace Hopper Ave, Stop 5
Monterey, CA 93943-5505
(831) 656-1725
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