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Hydrograph River at a Glance Download
San Lorenzo River (CA) at Big Trees Stage (ft)Flow (kcfs)Observed: 4.54 ft at 9:30PM May 03, 2024Observed: 4.53 ft at 9:45PM May 03, 2024Observed: 4.53 ft at 10:00PM May 03, 2024Observed: 4.53 ft at 10:15PM May 03, 2024Observed: 4.53 ft at 10:30PM May 03, 2024Observed: 4.53 ft at 10:45PM May 03, 2024Observed: 4.53 ft at 11:00PM May 03, 2024Observed: 4.53 ft at 11:15PM May 03, 2024Observed: 4.53 ft at 11:30PM May 03, 2024Observed: 4.53 ft at 11:45PM May 03, 2024Observed: 4.53 ft at 12:00AM May 04, 2024Observed: 4.53 ft at 12:15AM May 04, 2024Observed: 4.53 ft at 12:30AM May 04, 2024Observed: 4.53 ft at 12:45AM May 04, 2024Observed: 4.53 ft at 1:00AM May 04, 2024Observed: 4.53 ft at 1:15AM May 04, 2024Observed: 4.53 ft at 1:30AM May 04, 2024Observed: 4.53 ft at 1:45AM May 04, 2024Observed: 4.53 ft at 2:00AM May 04, 2024Observed: 4.53 ft at 2:15AM May 04, 2024Observed: 4.52 ft at 2:30AM May 04, 2024Observed: 4.53 ft at 2:45AM May 04, 2024Observed: 4.52 ft at 3:00AM May 04, 2024Observed: 4.52 ft at 3:15AM May 04, 2024Observed: 4.52 ft at 3:30AM May 04, 2024Observed: 4.52 ft at 3:45AM May 04, 2024Observed: 4.52 ft at 4:00AM May 04, 2024Observed: 4.52 ft at 4:15AM May 04, 2024Observed: 4.53 ft at 4:30AM May 04, 2024Observed: 4.53 ft at 4:45AM May 04, 2024Observed: 4.53 ft at 5:00AM May 04, 2024Observed: 4.53 ft at 5:15AM May 04, 2024Observed: 4.53 ft at 5:30AM May 04, 2024Observed: 4.52 ft at 5:45AM May 04, 2024Observed: 4.53 ft at 6:00AM May 04, 2024Observed: 4.52 ft at 6:15AM May 04, 2024Observed: 4.52 ft at 6:30AM May 04, 2024Observed: 4.53 ft at 6:45AM May 04, 2024Observed: 4.52 ft at 7:00AM May 04, 2024Observed: 4.52 ft at 7:15AM May 04, 2024Observed: 4.53 ft at 7:30AM May 04, 2024Observed: 4.53 ft at 7:45AM May 04, 2024Observed: 4.53 ft at 8:00AM May 04, 2024Observed: 4.53 ft at 8:15AM May 04, 2024Observed: 4.53 ft at 8:30AM May 04, 2024Observed: 4.53 ft at 8:45AM May 04, 2024Observed: 4.54 ft at 9:00AM May 04, 2024Observed: 4.54 ft at 9:15AM May 04, 2024Observed: 4.56 ft at 9:30AM May 04, 2024Observed: 4.6 ft at 9:45AM May 04, 2024Observed: 4.65 ft at 10:00AM May 04, 2024Observed: 4.7 ft at 10:15AM May 04, 2024Observed: 4.75 ft at 10:30AM May 04, 2024Observed: 4.81 ft at 10:45AM May 04, 2024Observed: 4.87 ft at 11:00AM May 04, 2024Observed: 4.94 ft at 11:15AM May 04, 2024Observed: 5.01 ft at 11:30AM May 04, 2024Observed: 5.07 ft at 11:45AM May 04, 2024Observed: 5.09 ft at 12:00PM May 04, 2024Observed: 5.11 ft at 12:15PM May 04, 2024Observed: 5.13 ft at 12:30PM May 04, 2024Observed: 5.15 ft at 12:45PM May 04, 2024Observed: 5.17 ft at 1:00PM May 04, 2024Observed: 5.18 ft at 1:15PM May 04, 2024Observed: 5.2 ft at 1:30PM May 04, 2024Observed: 5.2 ft at 1:45PM May 04, 2024Observed: 5.2 ft at 2:00PM May 04, 2024Observed: 5.19 ft at 2:15PM May 04, 2024Observed: 5.18 ft at 2:30PM May 04, 2024Observed: 5.18 ft at 2:45PM May 04, 2024Observed: 5.19 ft at 3:00PM May 04, 2024Observed: 5.21 ft at 3:15PM May 04, 2024Observed: 5.24 ft at 3:30PM May 04, 2024Observed: 5.26 ft at 3:45PM May 04, 2024Observed: 5.27 ft at 4:00PM May 04, 2024Observed: 5.29 ft at 4:15PM May 04, 2024Observed: 5.32 ft at 4:30PM May 04, 2024Observed: 5.34 ft at 4:45PM May 04, 2024Observed: 5.37 ft at 5:00PM May 04, 2024Observed: 5.38 ft at 5:15PM May 04, 2024Highest Observation: 5.39 ft at 5:30PM May 04, 2024Observed: 5.38 ft at 5:45PM May 04, 2024Observed: 5.37 ft at 6:00PM May 04, 2024Observed: 5.36 ft at 6:15PM May 04, 2024Observed: 5.35 ft at 6:30PM May 04, 2024Observed: 5.34 ft at 6:45PM May 04, 2024Observed: 5.33 ft at 7:00PM May 04, 2024Observed: 5.32 ft at 7:15PM May 04, 2024Observed: 5.32 ft at 7:30PM May 04, 2024Observed: 5.3 ft at 7:45PM May 04, 2024Observed: 5.28 ft at 8:00PM May 04, 2024Observed: 5.27 ft at 8:15PM May 04, 2024Observed: 5.26 ft at 8:30PM May 04, 2024Observed: 5.24 ft at 8:45PM May 04, 2024Observed: 5.23 ft at 9:00PM May 04, 2024Observed: 5.21 ft at 9:15PM May 04, 2024Observed: 5.21 ft at 9:30PM May 04, 2024Observed: 5.18 ft at 9:45PM May 04, 2024Observed: 5.17 ft at 10:00PM May 04, 2024Observed: 5.15 ft at 10:15PM May 04, 2024Observed: 5.14 ft at 10:30PM May 04, 2024Observed: 5.13 ft at 10:45PM May 04, 2024Observed: 5.12 ft at 11:00PM May 04, 2024Observed: 5.1 ft at 11:15PM May 04, 2024Observed: 5.09 ft at 11:30PM May 04, 2024Observed: 5.07 ft at 11:45PM May 04, 2024Observed: 5.07 ft at 12:00AM May 05, 2024Observed: 5.05 ft at 12:15AM May 05, 2024Observed: 5.04 ft at 12:30AM May 05, 2024Observed: 5.03 ft at 12:45AM May 05, 2024Observed: 5.02 ft at 1:00AM May 05, 2024Observed: 5.01 ft at 1:15AM May 05, 2024Observed: 5 ft at 1:30AM May 05, 2024Observed: 4.98 ft at 1:45AM May 05, 2024Observed: 4.98 ft at 2:00AM May 05, 2024Observed: 4.96 ft at 2:15AM May 05, 2024Observed: 4.96 ft at 2:30AM May 05, 2024Observed: 4.95 ft at 2:45AM May 05, 2024Observed: 4.93 ft at 3:00AM May 05, 2024Observed: 4.92 ft at 3:15AM May 05, 2024Observed: 4.92 ft at 3:30AM May 05, 2024Observed: 4.91 ft at 3:45AM May 05, 2024Observed: 4.9 ft at 4:00AM May 05, 2024Observed: 4.9 ft at 4:15AM May 05, 2024Observed: 4.88 ft at 4:30AM May 05, 2024Observed: 4.88 ft at 4:45AM May 05, 2024Observed: 4.87 ft at 5:00AM May 05, 2024Observed: 4.86 ft at 5:15AM May 05, 2024Observed: 4.86 ft at 5:30AM May 05, 2024Observed: 4.85 ft at 5:45AM May 05, 2024Observed: 4.85 ft at 6:00AM May 05, 2024Observed: 4.84 ft at 6:15AM May 05, 2024Observed: 4.84 ft at 6:30AM May 05, 2024Observed: 4.83 ft at 6:45AM May 05, 2024Observed: 4.83 ft at 7:00AM May 05, 2024Observed: 4.82 ft at 7:15AM May 05, 2024Observed: 4.82 ft at 7:30AM May 05, 2024Observed: 4.81 ft at 7:45AM May 05, 2024Observed: 4.81 ft at 8:00AM May 05, 2024Observed: 4.8 ft at 8:15AM May 05, 2024Observed: 4.8 ft at 8:30AM May 05, 2024Observed: 4.8 ft at 8:45AM May 05, 2024Observed: 4.79 ft at 9:00AM May 05, 2024Observed: 4.79 ft at 9:15AM May 05, 2024Observed: 4.79 ft at 9:30AM May 05, 2024Observed: 4.78 ft at 9:45AM May 05, 2024Observed: 4.77 ft at 10:00AM May 05, 2024Observed: 4.77 ft at 10:15AM May 05, 2024Observed: 4.77 ft at 10:30AM May 05, 2024Observed: 4.77 ft at 10:45AM May 05, 2024Observed: 4.76 ft at 11:00AM May 05, 2024Observed: 4.76 ft at 11:15AM May 05, 2024Observed: 4.76 ft at 11:30AM May 05, 2024Observed: 4.75 ft at 11:45AM May 05, 2024Observed: 4.75 ft at 12:00PM May 05, 2024Observed: 4.75 ft at 12:15PM May 05, 2024Observed: 4.75 ft at 12:30PM May 05, 2024Observed: 4.74 ft at 12:45PM May 05, 2024Observed: 4.74 ft at 1:00PM May 05, 2024Observed: 4.73 ft at 1:15PM May 05, 2024Observed: 4.74 ft at 1:30PM May 05, 2024Observed: 4.73 ft at 1:45PM May 05, 2024Observed: 4.73 ft at 2:00PM May 05, 2024Observed: 4.72 ft at 2:15PM May 05, 2024Observed: 4.73 ft at 2:30PM May 05, 2024Observed: 4.72 ft at 2:45PM May 05, 2024Observed: 4.72 ft at 3:00PM May 05, 2024Observed: 4.71 ft at 3:15PM May 05, 2024Observed: 4.71 ft at 3:30PM May 05, 2024Observed: 4.71 ft at 3:45PM May 05, 2024Observed: 4.71 ft at 4:00PM May 05, 2024Observed: 4.71 ft at 4:15PM May 05, 2024Observed: 4.71 ft at 4:30PM May 05, 2024Observed: 4.7 ft at 4:45PM May 05, 2024Observed: 4.7 ft at 5:00PM May 05, 2024Observed: 4.7 ft at 5:15PM May 05, 2024Observed: 4.69 ft at 5:30PM May 05, 2024Observed: 4.69 ft at 5:45PM May 05, 2024Observed: 4.69 ft at 6:00PM May 05, 2024Observed: 4.68 ft at 6:15PM May 05, 2024Observed: 4.68 ft at 6:30PM May 05, 2024Observed: 4.68 ft at 6:45PM May 05, 2024Observed: 4.68 ft at 7:00PM May 05, 2024Observed: 4.67 ft at 7:15PM May 05, 2024Observed: 4.67 ft at 7:30PM May 05, 2024Observed: 4.67 ft at 7:45PM May 05, 2024Observed: 4.67 ft at 8:00PM May 05, 2024Observed: 4.67 ft at 8:15PM May 05, 2024Observed: 4.66 ft at 8:30PM May 05, 2024Observed: 4.67 ft at 8:45PM May 05, 2024Observed: 4.66 ft at 9:00PM May 05, 2024Observed: 4.66 ft at 9:15PM May 05, 2024Observed: 4.66 ft at 9:30PM May 05, 2024Observed: 4.66 ft at 9:45PM May 05, 2024Observed: 4.66 ft at 10:00PM May 05, 2024Observed: 4.66 ft at 10:15PM May 05, 2024Observed: 4.66 ft at 10:30PM May 05, 2024Observed: 4.65 ft at 10:45PM May 05, 2024Observed: 4.66 ft at 11:00PM May 05, 2024Observed: 4.65 ft at 11:15PM May 05, 2024Observed: 4.65 ft at 11:30PM May 05, 2024Observed: 4.65 ft at 11:45PM May 05, 2024Observed: 4.65 ft at 12:00AM May 06, 2024Observed: 4.65 ft at 12:15AM May 06, 2024Observed: 4.65 ft at 12:30AM May 06, 2024Observed: 4.65 ft at 12:45AM May 06, 2024Observed: 4.65 ft at 1:00AM May 06, 2024Observed: 4.64 ft at 1:15AM May 06, 2024Observed: 4.64 ft at 1:30AM May 06, 2024Observed: 4.64 ft at 1:45AM May 06, 2024Observed: 4.64 ft at 2:00AM May 06, 2024Observed: 4.64 ft at 2:15AM May 06, 2024Observed: 4.64 ft at 2:30AM May 06, 2024Observed: 4.63 ft at 2:45AM May 06, 2024Observed: 4.63 ft at 3:00AM May 06, 2024Observed: 4.63 ft at 3:15AM May 06, 2024Observed: 4.63 ft at 3:30AM May 06, 2024Observed: 4.63 ft at 3:45AM May 06, 2024Observed: 4.63 ft at 4:00AM May 06, 2024Observed: 4.63 ft at 4:15AM May 06, 2024Observed: 4.63 ft at 4:30AM May 06, 2024Observed: 4.63 ft at 4:45AM May 06, 2024Observed: 4.63 ft at 5:00AM May 06, 2024Observed: 4.63 ft at 5:15AM May 06, 2024Observed: 4.63 ft at 5:30AM May 06, 2024Observed: 4.63 ft at 5:45AM May 06, 2024Observed: 4.63 ft at 6:00AM May 06, 2024Observed: 4.63 ft at 6:15AM May 06, 2024Observed: 4.62 ft at 6:30AM May 06, 2024Observed: 4.63 ft at 6:45AM May 06, 2024Observed: 4.63 ft at 7:00AM May 06, 2024Observed: 4.62 ft at 7:15AM May 06, 2024Observed: 4.62 ft at 7:30AM May 06, 2024Observed: 4.62 ft at 7:45AM May 06, 2024Observed: 4.62 ft at 8:00AM May 06, 2024Observed: 4.62 ft at 8:15AM May 06, 2024Observed: 4.62 ft at 8:30AM May 06, 2024Observed: 4.62 ft at 8:45AM May 06, 2024Observed: 4.62 ft at 9:00AM May 06, 2024Observed: 4.62 ft at 9:15AM May 06, 2024Observed: 4.62 ft at 9:30AM May 06, 2024Observed: 4.62 ft at 9:45AM May 06, 2024Observed: 4.62 ft at 10:00AM May 06, 2024Observed: 4.62 ft at 10:15AM May 06, 2024Observed: 4.62 ft at 10:30AM May 06, 2024Observed: 4.62 ft at 10:45AM May 06, 2024Observed: 4.6 ft at 11:00AM May 06, 2024Observed: 4.59 ft at 11:15AM May 06, 2024Observed: 4.61 ft at 11:30AM May 06, 2024Observed: 4.6 ft at 11:45AM May 06, 2024Observed: 4.62 ft at 12:00PM May 06, 2024Observed: 4.58 ft at 12:15PM May 06, 2024Observed: 4.62 ft at 12:30PM May 06, 2024Observed: 4.62 ft at 12:45PM May 06, 2024Observed: 4.62 ft at 1:00PM May 06, 2024Observed: 4.61 ft at 1:15PM May 06, 2024Observed: 4.62 ft at 1:30PM May 06, 2024Observed: 4.61 ft at 1:45PM May 06, 2024Observed: 4.61 ft at 2:00PM May 06, 2024Observed: 4.62 ft at 2:15PM May 06, 2024Observed: 4.61 ft at 2:30PM May 06, 2024Observed: 4.61 ft at 2:45PM May 06, 2024Observed: 4.61 ft at 3:00PM May 06, 2024Observed: 4.61 ft at 3:15PM May 06, 2024Observed: 4.62 ft at 3:30PM May 06, 2024Observed: 4.61 ft at 3:45PM May 06, 2024Observed: 4.61 ft at 4:00PM May 06, 2024Observed: 4.61 ft at 4:15PM May 06, 2024Observed: 4.61 ft at 4:30PM May 06, 2024Observed: 4.6 ft at 4:45PM May 06, 2024Observed: 4.61 ft at 5:00PM May 06, 2024Observed: 4.61 ft at 5:15PM May 06, 2024Observed: 4.61 ft at 5:30PM May 06, 2024Observed: 4.6 ft at 5:45PM May 06, 2024Observed: 4.61 ft at 6:00PM May 06, 2024Observed: 4.61 ft at 6:15PM May 06, 2024Observed: 4.61 ft at 6:30PM May 06, 2024Observed: 4.6 ft at 6:45PM May 06, 2024Observed: 4.6 ft at 7:00PM May 06, 2024Observed: 4.6 ft at 7:15PM May 06, 2024Observed: 4.6 ft at 7:30PM May 06, 2024Observed: 4.59 ft at 7:45PM May 06, 2024Observed: 4.59 ft at 8:00PM May 06, 2024Observed: 4.6 ft at 8:15PM May 06, 2024Observed: 4.6 ft at 8:30PM May 06, 2024Observed: 4.6 ft at 8:45PM May 06, 2024Observed: 4.59 ft at 9:00PM May 06, 2024Observed: 4.59 ft at 9:15PM May 06, 2024Observed: 4.59 ft at 9:30PM May 06, 2024Observed: 4.59 ft at 9:45PM May 06, 2024Observed: 4.59 ft at 10:00PM May 06, 2024Observed: 4.59 ft at 10:15PM May 06, 2024Observed: 4.59 ft at 10:30PM May 06, 2024Observed: 4.59 ft at 10:45PM May 06, 2024Observed: 4.59 ft at 11:00PM May 06, 2024Observed: 4.58 ft at 11:15PM May 06, 2024Observed: 4.58 ft at 11:30PM May 06, 2024Observed: 4.58 ft at 11:45PM May 06, 2024Observed: 4.58 ft at 12:00AM May 07, 2024Observed: 4.58 ft at 12:15AM May 07, 2024Observed: 4.58 ft at 12:30AM May 07, 2024Observed: 4.58 ft at 12:45AM May 07, 2024Observed: 4.58 ft at 1:00AM May 07, 2024Observed: 4.58 ft at 1:15AM May 07, 2024Observed: 4.58 ft at 1:30AM May 07, 2024Observed: 4.57 ft at 1:45AM May 07, 2024Observed: 4.57 ft at 2:00AM May 07, 2024Observed: 4.58 ft at 2:15AM May 07, 2024Observed: 4.57 ft at 2:30AM May 07, 2024Observed: 4.57 ft at 2:45AM May 07, 2024Observed: 4.57 ft at 3:00AM May 07, 2024Observed: 4.57 ft at 3:15AM May 07, 2024Observed: 4.57 ft at 3:30AM May 07, 2024Observed: 4.57 ft at 3:45AM May 07, 2024Observed: 4.57 ft at 4:00AM May 07, 2024Observed: 4.57 ft at 4:15AM May 07, 2024Observed: 4.57 ft at 4:30AM May 07, 2024Observed: 4.57 ft at 4:45AM May 07, 2024Observed: 4.57 ft at 5:00AM May 07, 2024Observed: 4.57 ft at 5:15AM May 07, 2024Observed: 4.57 ft at 5:30AM May 07, 2024Observed: 4.57 ft at 5:45AM May 07, 2024Observed: 4.57 ft at 6:00AM May 07, 2024Observed: 4.57 ft at 6:15AM May 07, 2024Observed: 4.57 ft at 6:30AM May 07, 2024Observed: 4.57 ft at 6:45AM May 07, 2024Observed: 4.57 ft at 7:00AM May 07, 2024Observed: 4.57 ft at 7:15AM May 07, 2024Observed: 4.57 ft at 7:30AM May 07, 2024Observed: 4.57 ft at 7:45AM May 07, 2024Observed: 4.57 ft at 8:00AM May 07, 2024Observed: 4.57 ft at 8:15AM May 07, 2024Observed: 4.57 ft at 8:30AM May 07, 2024Observed: 4.57 ft at 8:45AM May 07, 2024Observed: 4.57 ft at 9:00AM May 07, 2024Observed: 4.57 ft at 9:15AM May 07, 2024Observed: 4.57 ft at 9:30AM May 07, 2024Observed: 4.57 ft at 9:45AM May 07, 2024Observed: 4.57 ft at 10:00AM May 07, 2024Observed: 4.57 ft at 10:15AM May 07, 2024Observed: 4.57 ft at 10:30AM May 07, 2024Observed: 4.57 ft at 10:45AM May 07, 2024Observed: 4.56 ft at 11:00AM May 07, 2024Observed: 4.57 ft at 11:15AM May 07, 2024Observed: 4.57 ft at 11:30AM May 07, 2024Observed: 4.56 ft at 11:45AM May 07, 2024Observed: 4.57 ft at 12:00PM May 07, 2024Observed: 4.57 ft at 12:15PM May 07, 2024Observed: 4.57 ft at 12:30PM May 07, 2024Observed: 4.57 ft at 12:45PM May 07, 2024Observed: 4.57 ft at 1:00PM May 07, 2024Observed: 4.57 ft at 1:15PM May 07, 2024Observed: 4.57 ft at 1:30PM May 07, 2024Observed: 4.54 ft at 1:45PM May 07, 2024Observed: 4.57 ft at 2:00PM May 07, 2024Observed: 4.57 ft at 2:15PM May 07, 2024Observed: 4.57 ft at 2:30PM May 07, 2024Observed: 4.57 ft at 2:45PM May 07, 2024Observed: 4.57 ft at 3:00PM May 07, 2024Observed: 4.57 ft at 3:15PM May 07, 2024Observed: 4.57 ft at 3:30PM May 07, 2024Observed: 4.57 ft at 3:45PM May 07, 2024Observed: 4.57 ft at 4:00PM May 07, 2024Observed: 4.57 ft at 4:15PM May 07, 2024Observed: 4.57 ft at 4:30PM May 07, 2024Observed: 4.57 ft at 4:45PM May 07, 2024Observed: 4.57 ft at 5:00PM May 07, 2024Observed: 4.56 ft at 5:15PM May 07, 2024Observed: 4.56 ft at 5:30PM May 07, 2024Observed: 4.56 ft at 5:45PM May 07, 2024Observed: 4.56 ft at 6:00PM May 07, 2024Observed: 4.56 ft at 6:15PM May 07, 2024Observed: 4.56 ft at 6:30PM May 07, 2024Observed: 4.56 ft at 6:45PM May 07, 2024Observed: 4.56 ft at 7:00PM May 07, 2024Observed: 4.55 ft at 7:15PM May 07, 2024Observed: 4.55 ft at 7:30PM May 07, 2024Observed: 4.55 ft at 7:45PM May 07, 2024Observed: 4.55 ft at 8:00PM May 07, 2024Observed: 4.55 ft at 8:15PM May 07, 2024Observed: 4.55 ft at 8:30PM May 07, 2024Observed: 4.54 ft at 8:45PM May 07, 2024Observed: 4.55 ft at 9:00PM May 07, 2024Observed: 4.54 ft at 9:15PM May 07, 2024Observed: 4.55 ft at 9:30PM May 07, 2024Observed: 4.55 ft at 9:45PM May 07, 2024Observed: 4.54 ft at 10:00PM May 07, 2024Observed: 4.54 ft at 10:15PM May 07, 2024Observed: 4.54 ft at 10:30PM May 07, 2024Observed: 4.54 ft at 10:45PM May 07, 2024Observed: 4.54 ft at 11:00PM May 07, 2024Observed: 4.54 ft at 11:15PM May 07, 2024Observed: 4.54 ft at 11:30PM May 07, 2024Observed: 4.54 ft at 11:45PM May 07, 2024Observed: 4.54 ft at 12:00AM May 08, 2024Observed: 4.54 ft at 12:15AM May 08, 2024Observed: 4.54 ft at 12:30AM May 08, 2024Observed: 4.54 ft at 12:45AM May 08, 2024Observed: 4.54 ft at 1:00AM May 08, 2024Observed: 4.54 ft at 1:15AM May 08, 2024Observed: 4.54 ft at 1:30AM May 08, 2024Observed: 4.54 ft at 1:45AM May 08, 2024Observed: 4.54 ft at 2:00AM May 08, 2024Observed: 4.54 ft at 2:15AM May 08, 2024Observed: 4.54 ft at 2:30AM May 08, 2024Observed: 4.53 ft at 2:45AM May 08, 2024Observed: 4.53 ft at 3:00AM May 08, 2024Observed: 4.53 ft at 3:15AM May 08, 2024Observed: 4.53 ft at 3:30AM May 08, 2024Observed: 4.53 ft at 3:45AM May 08, 2024Observed: 4.53 ft at 4:00AM May 08, 2024Observed: 4.53 ft at 4:15AM May 08, 2024Observed: 4.53 ft at 4:30AM May 08, 2024Observed: 4.53 ft at 4:45AM May 08, 2024Observed: 4.53 ft at 5:00AM May 08, 2024Observed: 4.53 ft at 5:15AM May 08, 2024Observed: 4.53 ft at 5:30AM May 08, 2024Observed: 4.53 ft at 6:00AM May 08, 2024Observed: 4.53 ft at 6:15AM May 08, 2024Observed: 4.53 ft at 6:30AM May 08, 2024Observed: 4.53 ft at 6:45AM May 08, 2024Observed: 4.53 ft at 7:00AM May 08, 2024Observed: 4.53 ft at 7:15AM May 08, 2024Observed: 4.53 ft at 7:30AM May 08, 2024Observed: 4.53 ft at 7:45AM May 08, 2024Observed: 4.53 ft at 8:00AM May 08, 2024Observed: 4.53 ft at 8:15AM May 08, 2024Observed: 4.53 ft at 8:30AM May 08, 2024Observed: 4.53 ft at 8:45AM May 08, 2024Observed: 4.53 ft at 9:00AM May 08, 2024Observed: 4.53 ft at 9:15AM May 08, 2024Observed: 4.53 ft at 9:30AM May 08, 2024Observed: 4.53 ft at 9:45AM May 08, 2024Observed: 4.53 ft at 10:00AM May 08, 2024Observed: 4.53 ft at 10:15AM May 08, 2024Observed: 4.53 ft at 10:30AM May 08, 2024Observed: 4.53 ft at 10:45AM May 08, 2024Observed: 4.53 ft at 11:00AM May 08, 2024Observed: 4.53 ft at 11:15AM May 08, 2024Observed: 4.53 ft at 11:30AM May 08, 2024Observed: 4.53 ft at 11:45AM May 08, 2024Observed: 4.53 ft at 12:00PM May 08, 2024Observed: 4.53 ft at 12:15PM May 08, 2024Observed: 4.53 ft at 12:30PM May 08, 2024Observed: 4.53 ft at 12:45PM May 08, 2024Observed: 4.53 ft at 1:00PM May 08, 2024Observed: 4.53 ft at 1:15PM May 08, 2024Observed: 4.53 ft at 1:30PM May 08, 2024Observed: 4.53 ft at 1:45PM May 08, 2024Observed: 4.53 ft at 2:00PM May 08, 2024Observed: 4.53 ft at 2:15PM May 08, 2024Observed: 4.53 ft at 2:30PM May 08, 2024Observed: 4.53 ft at 2:45PM May 08, 2024Observed: 4.53 ft at 3:00PM May 08, 2024Observed: 4.53 ft at 3:15PM May 08, 2024Observed: 4.53 ft at 3:30PM May 08, 2024Observed: 4.53 ft at 3:45PM May 08, 2024Observed: 4.53 ft at 4:00PM May 08, 2024Observed: 4.53 ft at 4:15PM May 08, 2024Observed: 4.53 ft at 4:30PM May 08, 2024Observed: 4.53 ft at 4:45PM May 08, 2024Observed: 4.53 ft at 5:00PM May 08, 2024Observed: 4.53 ft at 5:15PM May 08, 2024Observed: 4.53 ft at 5:30PM May 08, 2024Observed: 4.53 ft at 5:45PM May 08, 2024Observed: 4.53 ft at 6:00PM May 08, 2024Observed: 4.52 ft at 6:15PM May 08, 2024Observed: 4.52 ft at 6:30PM May 08, 2024Observed: 4.52 ft at 6:45PM May 08, 2024Observed: 4.52 ft at 7:00PM May 08, 2024Observed: 4.52 ft at 7:15PM May 08, 2024Observed: 4.52 ft at 7:30PM May 08, 2024Observed: 4.52 ft at 7:45PM May 08, 2024Observed: 4.52 ft at 8:00PM May 08, 2024Observed: 4.52 ft at 8:15PM May 08, 2024Observed: 4.52 ft at 8:30PM May 08, 2024Observed: 4.52 ft at 8:45PM May 08, 2024Observed: 4.52 ft at 9:00PM May 08, 2024Highest Forecast: 4.5 ft 10:00PM May 08, 2024Highest Forecast: 4.5 ft 11:00PM May 08, 2024Highest Forecast: 4.5 ft 12:00AM May 09, 2024Highest Forecast: 4.5 ft 1:00AM May 09, 2024Highest Forecast: 4.5 ft 2:00AM May 09, 2024Highest Forecast: 4.5 ft 3:00AM May 09, 2024Highest Forecast: 4.5 ft 4:00AM May 09, 2024Highest Forecast: 4.5 ft 5:00AM May 09, 2024Highest Forecast: 4.5 ft 6:00AM May 09, 2024Highest Forecast: 4.5 ft 7:00AM May 09, 2024Highest Forecast: 4.5 ft 8:00AM May 09, 2024Highest Forecast: 4.5 ft 9:00AM May 09, 2024Highest Forecast: 4.5 ft 10:00AM May 09, 2024Highest Forecast: 4.5 ft 11:00AM May 09, 2024Highest Forecast: 4.5 ft 12:00PM May 09, 2024Highest Forecast: 4.5 ft 1:00PM May 09, 2024Highest Forecast: 4.5 ft 2:00PM May 09, 2024Highest Forecast: 4.5 ft 3:00PM May 09, 2024Highest Forecast: 4.5 ft 4:00PM May 09, 2024Highest Forecast: 4.5 ft 5:00PM May 09, 2024Highest Forecast: 4.5 ft 6:00PM May 09, 2024Highest Forecast: 4.5 ft 7:00PM May 09, 2024Highest Forecast: 4.5 ft 8:00PM May 09, 2024Highest Forecast: 4.5 ft 9:00PM May 09, 2024Highest Forecast: 4.5 ft 10:00PM May 09, 2024Highest Forecast: 4.5 ft 11:00PM May 09, 2024Highest Forecast: 4.5 ft 12:00AM May 10, 2024Highest Forecast: 4.5 ft 1:00AM May 10, 2024Highest Forecast: 4.5 ft 2:00AM May 10, 2024Highest Forecast: 4.5 ft 3:00AM May 10, 2024Highest Forecast: 4.5 ft 4:00AM May 10, 2024Highest Forecast: 4.5 ft 5:00AM May 10, 2024Highest Forecast: 4.5 ft 6:00AM May 10, 2024Highest Forecast: 4.5 ft 7:00AM May 10, 2024Highest Forecast: 4.5 ft 8:00AM May 10, 2024Highest Forecast: 4.5 ft 9:00AM May 10, 2024Highest Forecast: 4.5 ft 10:00AM May 10, 2024Highest Forecast: 4.5 ft 11:00AM May 10, 2024Highest Forecast: 4.5 ft 12:00PM May 10, 2024Highest Forecast: 4.5 ft 1:00PM May 10, 2024Highest Forecast: 4.5 ft 2:00PM May 10, 2024Highest Forecast: 4.5 ft 3:00PM May 10, 2024Highest Forecast: 4.5 ft 4:00PM May 10, 2024Highest Forecast: 4.5 ft 5:00PM May 10, 2024Highest Forecast: 4.5 ft 6:00PM May 10, 2024Forecast: 4.4 ft 7:00PM May 10, 2024Forecast: 4.4 ft 8:00PM May 10, 2024Forecast: 4.4 ft 9:00PM May 10, 2024Forecast: 4.4 ft 10:00PM May 10, 2024Forecast: 4.4 ft 11:00PM May 10, 2024Forecast: 4.4 ft 12:00AM May 11, 2024Forecast: 4.4 ft 1:00AM May 11, 2024Forecast: 4.4 ft 2:00AM May 11, 2024Forecast: 4.4 ft 3:00AM May 11, 2024Forecast: 4.4 ft 4:00AM May 11, 2024Forecast: 4.4 ft 5:00AM May 11, 2024Forecast: 4.4 ft 6:00AM May 11, 2024Forecast: 4.4 ft 7:00AM May 11, 2024Forecast: 4.4 ft 8:00AM May 11, 2024Forecast: 4.4 ft 9:00AM May 11, 2024Forecast: 4.4 ft 10:00AM May 11, 2024Forecast: 4.4 ft 11:00AM May 11, 2024Forecast: 4.4 ft 12:00PM May 11, 2024Forecast: 4.4 ft 1:00PM May 11, 2024Forecast: 4.4 ft 2:00PM May 11, 2024Forecast: 4.4 ft 3:00PM May 11, 2024Forecast: 4.4 ft 4:00PM May 11, 2024Forecast: 4.4 ft 5:00PM May 11, 2024Forecast: 4.4 ft 6:00PM May 11, 2024Forecast: 4.4 ft 7:00PM May 11, 2024Forecast: 4.4 ft 8:00PM May 11, 2024Forecast: 4.4 ft 9:00PM May 11, 2024Forecast: 4.4 ft 10:00PM May 11, 2024Forecast: 4.4 ft 11:00PM May 11, 2024Forecast: 4.4 ft 12:00AM May 12, 2024Forecast: 4.4 ft 1:00AM May 12, 2024Forecast: 4.4 ft 2:00AM May 12, 2024Forecast: 4.4 ft 3:00AM May 12, 2024Forecast: 4.4 ft 4:00AM May 12, 2024Forecast: 4.4 ft 5:00AM May 12, 2024Forecast: 4.4 ft 6:00AM May 12, 2024Forecast: 4.4 ft 7:00AM May 12, 2024Forecast: 4.4 ft 8:00AM May 12, 2024Forecast: 4.4 ft 9:00AM May 12, 2024Forecast: 4.4 ft 10:00AM May 12, 2024Forecast: 4.4 ft 11:00AM May 12, 2024Forecast: 4.4 ft 12:00PM May 12, 2024Forecast: 4.4 ft 1:00PM May 12, 2024Forecast: 4.4 ft 2:00PM May 12, 2024Forecast: 4.4 ft 3:00PM May 12, 2024Forecast: 4.4 ft 4:00PM May 12, 2024Forecast: 4.4 ft 5:00PM May 12, 2024Forecast: 4.4 ft 6:00PM May 12, 2024Forecast: 4.4 ft 7:00PM May 12, 2024Forecast: 4.4 ft 8:00PM May 12, 2024Forecast: 4.4 ft 9:00PM May 12, 2024Forecast: 4.4 ft 10:00PM May 12, 2024Forecast: 4.4 ft 11:00PM May 12, 2024Forecast: 4.4 ft 12:00AM May 13, 2024Forecast: 4.4 ft 1:00AM May 13, 2024Forecast: 4.4 ft 2:00AM May 13, 2024Forecast: 4.3 ft 3:00AM May 13, 2024Forecast: 4.3 ft 4:00AM May 13, 2024Forecast: 4.3 ft 5:00AM May 13, 2024USGS--Water Resources of the United StatesBTEC1(plotting HGIRG) Graph Created (9:15PM May 8, 2024)ObservedForecast (issued 8:09AM May 8)Latest observed value: 4.52 ft at 9:00 PM PDT 8-May-2024. Flood Stage is 16.5 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: NGVD29
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
(1) 28.85 ft on 01/05/1982
(2) 24.54 ft on 01/09/2023
(3) 24.10 ft on 02/07/2017
(4) 24.08 ft on 02/03/1998
(5) 22.55 ft on 12/23/1955
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.90 ft on 03/14/2023
(2) 19.90 ft on 03/10/2023
(3) 21.83 ft on 01/14/2023
(4) 24.54 ft on 01/09/2023
(5) 22.15 ft on 12/31/2022
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
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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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
21.76 Major Flooding. 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.
16.5 Minor Flooding. Flooding is either imminent or already occurring in Paradise Park, with initial flooding in the St. Bernard Street area.
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.
About This Location Collapse

Latitude: 37.044393° N, Longitude: 122.072464° 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 29 227 ft 243.5 ft 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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San Francisco Bay Area Weather Forecast Office
21 Grace Hopper Ave, Stop 5
Monterey, CA 93943-5505
(831) 656-1725
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