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Hydrograph River at a Glance Download
San Lorenzo River (CA) at Big Trees Stage (ft)Flow (kcfs)Highest Observation: 4.22 ft at 1:30AM May 20, 2024Highest Observation: 4.22 ft at 1:45AM May 20, 2024Highest Observation: 4.22 ft at 2:00AM May 20, 2024Highest Observation: 4.22 ft at 2:15AM May 20, 2024Highest Observation: 4.22 ft at 2:30AM May 20, 2024Highest Observation: 4.22 ft at 2:45AM May 20, 2024Highest Observation: 4.22 ft at 3:00AM May 20, 2024Highest Observation: 4.22 ft at 3:15AM May 20, 2024Highest Observation: 4.22 ft at 3:30AM May 20, 2024Highest Observation: 4.22 ft at 3:45AM May 20, 2024Highest Observation: 4.22 ft at 4:00AM May 20, 2024Observed: 4.21 ft at 4:15AM May 20, 2024Highest Observation: 4.22 ft at 4:30AM May 20, 2024Highest Observation: 4.22 ft at 4:45AM May 20, 2024Highest Observation: 4.22 ft at 5:00AM May 20, 2024Highest Observation: 4.22 ft at 5:15AM May 20, 2024Observed: 4.21 ft at 5:30AM May 20, 2024Highest Observation: 4.22 ft at 5:45AM May 20, 2024Observed: 4.21 ft at 6:00AM May 20, 2024Highest Observation: 4.22 ft at 6:15AM May 20, 2024Highest Observation: 4.22 ft at 6:30AM May 20, 2024Observed: 4.21 ft at 6:45AM May 20, 2024Observed: 4.21 ft at 7:00AM May 20, 2024Highest Observation: 4.22 ft at 7:15AM May 20, 2024Observed: 4.21 ft at 7:30AM May 20, 2024Highest Observation: 4.22 ft at 7:45AM May 20, 2024Observed: 4.21 ft at 8:00AM May 20, 2024Highest Observation: 4.22 ft at 8:15AM May 20, 2024Highest Observation: 4.22 ft at 8:30AM May 20, 2024Observed: 4.21 ft at 8:45AM May 20, 2024Highest Observation: 4.22 ft at 9:00AM May 20, 2024Highest Observation: 4.22 ft at 9:15AM May 20, 2024Highest Observation: 4.22 ft at 9:30AM May 20, 2024Highest Observation: 4.22 ft at 9:45AM May 20, 2024Observed: 4.21 ft at 10:00AM May 20, 2024Highest Observation: 4.22 ft at 10:15AM May 20, 2024Observed: 4.2 ft at 10:30AM May 20, 2024Observed: 4.21 ft at 10:45AM May 20, 2024Highest Observation: 4.22 ft at 11:00AM May 20, 2024Highest Observation: 4.22 ft at 11:15AM May 20, 2024Observed: 4.2 ft at 11:30AM May 20, 2024Observed: 4.21 ft at 11:45AM May 20, 2024Observed: 4.2 ft at 12:00PM May 20, 2024Observed: 4.21 ft at 12:15PM May 20, 2024Highest Observation: 4.22 ft at 12:30PM May 20, 2024Highest Observation: 4.22 ft at 12:45PM May 20, 2024Highest Observation: 4.22 ft at 1:00PM May 20, 2024Observed: 4.21 ft at 1:15PM May 20, 2024Highest Observation: 4.22 ft at 1:30PM May 20, 2024Observed: 4.21 ft at 1:45PM May 20, 2024Observed: 4.2 ft at 2:00PM May 20, 2024Highest Observation: 4.22 ft at 2:15PM May 20, 2024Highest Observation: 4.22 ft at 2:30PM May 20, 2024Highest Observation: 4.22 ft at 2:45PM May 20, 2024Observed: 4.2 ft at 3:00PM May 20, 2024Observed: 4.21 ft at 3:15PM May 20, 2024Highest Observation: 4.22 ft at 3:30PM May 20, 2024Highest Observation: 4.22 ft at 3:45PM May 20, 2024Observed: 4.21 ft at 4:00PM May 20, 2024Observed: 4.21 ft at 4:15PM May 20, 2024Observed: 4.21 ft at 4:30PM May 20, 2024Observed: 4.21 ft at 4:45PM May 20, 2024Observed: 4.21 ft at 5:00PM May 20, 2024Observed: 4.21 ft at 5:15PM May 20, 2024Observed: 4.21 ft at 5:30PM May 20, 2024Observed: 4.21 ft at 5:45PM May 20, 2024Observed: 4.21 ft at 6:00PM May 20, 2024Observed: 4.21 ft at 6:15PM May 20, 2024Observed: 4.21 ft at 6:30PM May 20, 2024Observed: 4.21 ft at 6:45PM May 20, 2024Observed: 4.21 ft at 7:00PM May 20, 2024Observed: 4.21 ft at 7:15PM May 20, 2024Observed: 4.21 ft at 7:30PM May 20, 2024Observed: 4.21 ft at 7:45PM May 20, 2024Observed: 4.21 ft at 8:00PM May 20, 2024Observed: 4.21 ft at 8:15PM May 20, 2024Observed: 4.21 ft at 8:30PM May 20, 2024Observed: 4.21 ft at 8:45PM May 20, 2024Observed: 4.21 ft at 9:00PM May 20, 2024Observed: 4.21 ft at 9:15PM May 20, 2024Observed: 4.21 ft at 9:30PM May 20, 2024Observed: 4.21 ft at 9:45PM May 20, 2024Observed: 4.21 ft at 10:00PM May 20, 2024Observed: 4.21 ft at 10:15PM May 20, 2024Observed: 4.21 ft at 10:30PM May 20, 2024Observed: 4.21 ft at 10:45PM May 20, 2024Observed: 4.2 ft at 11:00PM May 20, 2024Observed: 4.21 ft at 11:15PM May 20, 2024Observed: 4.2 ft at 11:30PM May 20, 2024Observed: 4.2 ft at 11:45PM May 20, 2024Observed: 4.2 ft at 12:00AM May 21, 2024Observed: 4.2 ft at 12:15AM May 21, 2024Observed: 4.2 ft at 12:30AM May 21, 2024Observed: 4.2 ft at 12:45AM May 21, 2024Observed: 4.2 ft at 1:00AM May 21, 2024Observed: 4.2 ft at 1:15AM May 21, 2024Observed: 4.2 ft at 1:30AM May 21, 2024Observed: 4.2 ft at 1:45AM May 21, 2024Observed: 4.2 ft at 2:00AM May 21, 2024Observed: 4.2 ft at 2:15AM May 21, 2024Observed: 4.2 ft at 2:30AM May 21, 2024Observed: 4.2 ft at 2:45AM May 21, 2024Observed: 4.2 ft at 3:00AM May 21, 2024Observed: 4.2 ft at 3:15AM May 21, 2024Observed: 4.2 ft at 3:30AM May 21, 2024Observed: 4.2 ft at 3:45AM May 21, 2024Observed: 4.2 ft at 4:00AM May 21, 2024Observed: 4.2 ft at 4:15AM May 21, 2024Observed: 4.2 ft at 4:30AM May 21, 2024Observed: 4.2 ft at 4:45AM May 21, 2024Observed: 4.2 ft at 5:00AM May 21, 2024Observed: 4.21 ft at 9:45AM May 21, 2024Observed: 4.21 ft at 10:00AM May 21, 2024Observed: 4.21 ft at 10:15AM May 21, 2024Observed: 4.21 ft at 10:30AM May 21, 2024Observed: 4.21 ft at 10:45AM May 21, 2024Observed: 4.19 ft at 11:00AM May 21, 2024Observed: 4.21 ft at 11:15AM May 21, 2024Observed: 4.2 ft at 11:30AM May 21, 2024Observed: 4.19 ft at 11:45AM May 21, 2024Observed: 4.21 ft at 12:00PM May 21, 2024Observed: 4.21 ft at 12:15PM May 21, 2024Observed: 4.2 ft at 12:30PM May 21, 2024Observed: 4.19 ft at 12:45PM May 21, 2024Observed: 4.21 ft at 1:00PM May 21, 2024Highest Observation: 4.22 ft at 1:15PM May 21, 2024Observed: 4.21 ft at 1:30PM May 21, 2024Observed: 4.21 ft at 1:45PM May 21, 2024Observed: 4.21 ft at 2:00PM May 21, 2024Observed: 4.2 ft at 2:15PM May 21, 2024Observed: 4.21 ft at 2:30PM May 21, 2024Observed: 4.21 ft at 2:45PM May 21, 2024Observed: 4.21 ft at 3:00PM May 21, 2024Observed: 4.2 ft at 3:15PM May 21, 2024Observed: 4.21 ft at 3:30PM May 21, 2024Observed: 4.21 ft at 3:45PM May 21, 2024Observed: 4.21 ft at 4:00PM May 21, 2024Observed: 4.21 ft at 4:15PM May 21, 2024Observed: 4.21 ft at 4:30PM May 21, 2024Observed: 4.21 ft at 4:45PM May 21, 2024Observed: 4.2 ft at 5:00PM May 21, 2024Observed: 4.2 ft at 5:15PM May 21, 2024Observed: 4.2 ft at 5:30PM May 21, 2024Observed: 4.2 ft at 5:45PM May 21, 2024Observed: 4.19 ft at 6:00PM May 21, 2024Observed: 4.2 ft at 6:15PM May 21, 2024Observed: 4.19 ft at 6:30PM May 21, 2024Observed: 4.19 ft at 6:45PM May 21, 2024Observed: 4.2 ft at 7:00PM May 21, 2024Observed: 4.19 ft at 7:15PM May 21, 2024Observed: 4.19 ft at 7:30PM May 21, 2024Observed: 4.19 ft at 7:45PM May 21, 2024Observed: 4.19 ft at 8:00PM May 21, 2024Observed: 4.18 ft at 8:15PM May 21, 2024Observed: 4.19 ft at 8:30PM May 21, 2024Observed: 4.19 ft at 8:45PM May 21, 2024Observed: 4.19 ft at 9:00PM May 21, 2024Observed: 4.19 ft at 9:15PM May 21, 2024Observed: 4.19 ft at 9:30PM May 21, 2024Observed: 4.18 ft at 9:45PM May 21, 2024Observed: 4.18 ft at 10:00PM May 21, 2024Observed: 4.18 ft at 10:15PM May 21, 2024Observed: 4.19 ft at 10:30PM May 21, 2024Observed: 4.19 ft at 10:45PM May 21, 2024Observed: 4.18 ft at 11:00PM May 21, 2024Observed: 4.18 ft at 11:15PM May 21, 2024Observed: 4.18 ft at 11:30PM May 21, 2024Observed: 4.18 ft at 11:45PM May 21, 2024Observed: 4.18 ft at 12:00AM May 22, 2024Observed: 4.18 ft at 12:15AM May 22, 2024Observed: 4.18 ft at 12:30AM May 22, 2024Observed: 4.18 ft at 12:45AM May 22, 2024Observed: 4.18 ft at 1:00AM May 22, 2024Observed: 4.18 ft at 1:15AM May 22, 2024Observed: 4.18 ft at 1:30AM May 22, 2024Observed: 4.18 ft at 1:45AM May 22, 2024Observed: 4.18 ft at 2:00AM May 22, 2024Observed: 4.18 ft at 2:15AM May 22, 2024Observed: 4.18 ft at 2:30AM May 22, 2024Observed: 4.18 ft at 2:45AM May 22, 2024Observed: 4.17 ft at 3:00AM May 22, 2024Observed: 4.17 ft at 3:15AM May 22, 2024Observed: 4.17 ft at 3:30AM May 22, 2024Observed: 4.17 ft at 3:45AM May 22, 2024Observed: 4.17 ft at 4:00AM May 22, 2024Observed: 4.17 ft at 4:15AM May 22, 2024Observed: 4.17 ft at 4:30AM May 22, 2024Observed: 4.17 ft at 4:45AM May 22, 2024Observed: 4.17 ft at 5:00AM May 22, 2024Observed: 4.17 ft at 5:15AM May 22, 2024Observed: 4.17 ft at 5:30AM May 22, 2024Observed: 4.17 ft at 5:45AM May 22, 2024Observed: 4.17 ft at 6:00AM May 22, 2024Observed: 4.17 ft at 6:15AM May 22, 2024Observed: 4.17 ft at 6:30AM May 22, 2024Observed: 4.17 ft at 6:45AM May 22, 2024Observed: 4.17 ft at 7:00AM May 22, 2024Observed: 4.17 ft at 7:15AM May 22, 2024Observed: 4.17 ft at 7:30AM May 22, 2024Observed: 4.17 ft at 7:45AM May 22, 2024Observed: 4.17 ft at 8:00AM May 22, 2024Observed: 4.17 ft at 8:15AM May 22, 2024Observed: 4.17 ft at 8:30AM May 22, 2024Observed: 4.17 ft at 8:45AM May 22, 2024Observed: 4.17 ft at 9:00AM May 22, 2024Observed: 4.17 ft at 9:15AM May 22, 2024Observed: 4.17 ft at 9:30AM May 22, 2024Observed: 4.17 ft at 9:45AM May 22, 2024Observed: 4.17 ft at 10:00AM May 22, 2024Observed: 4.17 ft at 10:15AM May 22, 2024Observed: 4.17 ft at 10:30AM May 22, 2024Observed: 4.17 ft at 10:45AM May 22, 2024Observed: 4.17 ft at 11:00AM May 22, 2024Observed: 4.16 ft at 11:15AM May 22, 2024Observed: 4.16 ft at 11:30AM May 22, 2024Observed: 4.17 ft at 11:45AM May 22, 2024Observed: 4.16 ft at 12:00PM May 22, 2024Observed: 4.15 ft at 12:15PM May 22, 2024Observed: 4.17 ft at 12:30PM May 22, 2024Observed: 4.17 ft at 12:45PM May 22, 2024Observed: 4.17 ft at 1:00PM May 22, 2024Observed: 4.17 ft at 1:15PM May 22, 2024Observed: 4.17 ft at 1:30PM May 22, 2024Observed: 4.17 ft at 1:45PM May 22, 2024Observed: 4.17 ft at 2:00PM May 22, 2024Observed: 4.17 ft at 2:15PM May 22, 2024Observed: 4.17 ft at 2:30PM May 22, 2024Observed: 4.17 ft at 2:45PM May 22, 2024Observed: 4.17 ft at 3:00PM May 22, 2024Observed: 4.17 ft at 3:15PM May 22, 2024Observed: 4.17 ft at 3:30PM May 22, 2024Observed: 4.17 ft at 3:45PM May 22, 2024Observed: 4.17 ft at 4:00PM May 22, 2024Observed: 4.17 ft at 4:15PM May 22, 2024Observed: 4.17 ft at 4:30PM May 22, 2024Observed: 4.17 ft at 5:00PM May 22, 2024Observed: 4.17 ft at 5:15PM May 22, 2024Observed: 4.16 ft at 5:30PM May 22, 2024Observed: 4.16 ft at 5:45PM May 22, 2024Observed: 4.16 ft at 6:00PM May 22, 2024Observed: 4.17 ft at 6:15PM May 22, 2024Observed: 4.16 ft at 6:30PM May 22, 2024Observed: 4.16 ft at 6:45PM May 22, 2024Observed: 4.16 ft at 7:00PM May 22, 2024Observed: 4.16 ft at 7:15PM May 22, 2024Observed: 4.16 ft at 7:30PM May 22, 2024Observed: 4.16 ft at 7:45PM May 22, 2024Observed: 4.16 ft at 8:00PM May 22, 2024Observed: 4.16 ft at 8:15PM May 22, 2024Observed: 4.16 ft at 8:30PM May 22, 2024Observed: 4.16 ft at 8:45PM May 22, 2024Observed: 4.16 ft at 9:00PM May 22, 2024Observed: 4.16 ft at 9:15PM May 22, 2024Observed: 4.16 ft at 9:30PM May 22, 2024Observed: 4.16 ft at 9:45PM May 22, 2024Observed: 4.16 ft at 10:00PM May 22, 2024Observed: 4.16 ft at 10:15PM May 22, 2024Observed: 4.16 ft at 10:30PM May 22, 2024Observed: 4.16 ft at 10:45PM May 22, 2024Observed: 4.16 ft at 11:00PM May 22, 2024Observed: 4.16 ft at 11:15PM May 22, 2024Observed: 4.16 ft at 11:30PM May 22, 2024Observed: 4.16 ft at 11:45PM May 22, 2024Observed: 4.16 ft at 12:00AM May 23, 2024Observed: 4.16 ft at 12:15AM May 23, 2024Observed: 4.16 ft at 12:30AM May 23, 2024Observed: 4.16 ft at 12:45AM May 23, 2024Observed: 4.16 ft at 1:00AM May 23, 2024Observed: 4.15 ft at 1:15AM May 23, 2024Observed: 4.15 ft at 1:30AM May 23, 2024Observed: 4.15 ft at 1:45AM May 23, 2024Observed: 4.15 ft at 2:00AM May 23, 2024Observed: 4.15 ft at 2:15AM May 23, 2024Observed: 4.15 ft at 2:30AM May 23, 2024Observed: 4.14 ft at 2:45AM May 23, 2024Observed: 4.14 ft at 3:00AM May 23, 2024Observed: 4.14 ft at 3:15AM May 23, 2024Observed: 4.14 ft at 3:30AM May 23, 2024Observed: 4.13 ft at 3:45AM May 23, 2024Observed: 4.13 ft at 4:00AM May 23, 2024Observed: 4.13 ft at 4:15AM May 23, 2024Observed: 4.13 ft at 4:30AM May 23, 2024Observed: 4.13 ft at 4:45AM May 23, 2024Observed: 4.13 ft at 5:00AM May 23, 2024Observed: 4.14 ft at 5:15AM May 23, 2024Observed: 4.14 ft at 5:30AM May 23, 2024Observed: 4.14 ft at 5:45AM May 23, 2024Observed: 4.14 ft at 6:00AM May 23, 2024Observed: 4.15 ft at 6:15AM May 23, 2024Observed: 4.15 ft at 6:30AM May 23, 2024Observed: 4.15 ft at 6:45AM May 23, 2024Observed: 4.15 ft at 7:00AM May 23, 2024Observed: 4.15 ft at 7:15AM May 23, 2024Observed: 4.15 ft at 7:30AM May 23, 2024Observed: 4.15 ft at 7:45AM May 23, 2024Observed: 4.15 ft at 8:00AM May 23, 2024Observed: 4.15 ft at 8:15AM May 23, 2024Observed: 4.15 ft at 8:30AM May 23, 2024Observed: 4.15 ft at 8:45AM May 23, 2024Observed: 4.15 ft at 9:00AM May 23, 2024Observed: 4.15 ft at 9:15AM May 23, 2024Observed: 4.15 ft at 9:30AM May 23, 2024Observed: 4.15 ft at 9:45AM May 23, 2024Observed: 4.15 ft at 10:00AM May 23, 2024Observed: 4.15 ft at 10:15AM May 23, 2024Observed: 4.15 ft at 10:30AM May 23, 2024Observed: 4.15 ft at 10:45AM May 23, 2024Observed: 4.15 ft at 11:00AM May 23, 2024Observed: 4.15 ft at 11:15AM May 23, 2024Observed: 4.15 ft at 11:30AM May 23, 2024Observed: 4.16 ft at 11:45AM May 23, 2024Observed: 4.16 ft at 12:00PM May 23, 2024Observed: 4.16 ft at 12:15PM May 23, 2024Observed: 4.16 ft at 12:30PM May 23, 2024Observed: 4.15 ft at 12:45PM May 23, 2024Observed: 4.17 ft at 1:00PM May 23, 2024Observed: 4.15 ft at 1:15PM May 23, 2024Observed: 4.15 ft at 1:30PM May 23, 2024Observed: 4.15 ft at 1:45PM May 23, 2024Observed: 4.16 ft at 2:00PM May 23, 2024Observed: 4.16 ft at 2:15PM May 23, 2024Observed: 4.15 ft at 2:30PM May 23, 2024Observed: 4.15 ft at 2:45PM May 23, 2024Observed: 4.16 ft at 3:00PM May 23, 2024Observed: 4.13 ft at 3:15PM May 23, 2024Observed: 4.13 ft at 3:30PM May 23, 2024Observed: 4.15 ft at 3:45PM May 23, 2024Observed: 4.15 ft at 4:00PM May 23, 2024Observed: 4.13 ft at 4:15PM May 23, 2024Observed: 4.15 ft at 4:30PM May 23, 2024Observed: 4.15 ft at 4:45PM May 23, 2024Observed: 4.15 ft at 5:00PM May 23, 2024Observed: 4.15 ft at 5:15PM May 23, 2024Observed: 4.15 ft at 5:30PM May 23, 2024Observed: 4.15 ft at 5:45PM May 23, 2024Observed: 4.15 ft at 6:00PM May 23, 2024Observed: 4.15 ft at 6:15PM May 23, 2024Observed: 4.15 ft at 6:30PM May 23, 2024Observed: 4.15 ft at 6:45PM May 23, 2024Observed: 4.14 ft at 7:00PM May 23, 2024Observed: 4.14 ft at 7:15PM May 23, 2024Observed: 4.14 ft at 7:30PM May 23, 2024Observed: 4.14 ft at 7:45PM May 23, 2024Observed: 4.14 ft at 8:00PM May 23, 2024Observed: 4.14 ft at 8:15PM May 23, 2024Observed: 4.14 ft at 8:30PM May 23, 2024Observed: 4.14 ft at 8:45PM May 23, 2024Observed: 4.14 ft at 9:00PM May 23, 2024Observed: 4.14 ft at 9:15PM May 23, 2024Observed: 4.14 ft at 9:30PM May 23, 2024Observed: 4.14 ft at 9:45PM May 23, 2024Observed: 4.14 ft at 10:00PM May 23, 2024Observed: 4.14 ft at 10:15PM May 23, 2024Observed: 4.14 ft at 10:30PM May 23, 2024Observed: 4.14 ft at 10:45PM May 23, 2024Observed: 4.14 ft at 11:00PM May 23, 2024Observed: 4.14 ft at 11:15PM May 23, 2024Observed: 4.14 ft at 11:30PM May 23, 2024Observed: 4.14 ft at 11:45PM May 23, 2024Observed: 4.14 ft at 12:00AM May 24, 2024Observed: 4.14 ft at 12:15AM May 24, 2024Observed: 4.14 ft at 12:30AM May 24, 2024Observed: 4.14 ft at 12:45AM May 24, 2024Observed: 4.14 ft at 1:00AM May 24, 2024Observed: 4.14 ft at 1:15AM May 24, 2024Observed: 4.14 ft at 1:30AM May 24, 2024Observed: 4.13 ft at 1:45AM May 24, 2024Observed: 4.13 ft at 2:00AM May 24, 2024Observed: 4.13 ft at 2:15AM May 24, 2024Observed: 4.13 ft at 2:30AM May 24, 2024Observed: 4.13 ft at 2:45AM May 24, 2024Observed: 4.13 ft at 3:00AM May 24, 2024Observed: 4.13 ft at 3:15AM May 24, 2024Observed: 4.13 ft at 3:30AM May 24, 2024Observed: 4.13 ft at 3:45AM May 24, 2024Observed: 4.13 ft at 4:00AM May 24, 2024Observed: 4.13 ft at 4:15AM May 24, 2024Observed: 4.13 ft at 4:30AM May 24, 2024Observed: 4.13 ft at 4:45AM May 24, 2024Observed: 4.13 ft at 5:00AM May 24, 2024Observed: 4.13 ft at 5:15AM May 24, 2024Observed: 4.13 ft at 5:30AM May 24, 2024Observed: 4.13 ft at 5:45AM May 24, 2024Observed: 4.13 ft at 6:00AM May 24, 2024Observed: 4.13 ft at 6:15AM May 24, 2024Observed: 4.13 ft at 6:30AM May 24, 2024Observed: 4.13 ft at 6:45AM May 24, 2024Observed: 4.13 ft at 7:00AM May 24, 2024Observed: 4.13 ft at 7:15AM May 24, 2024Observed: 4.13 ft at 7:30AM May 24, 2024Observed: 4.13 ft at 7:45AM May 24, 2024Observed: 4.13 ft at 8:00AM May 24, 2024Observed: 4.13 ft at 8:15AM May 24, 2024Observed: 4.13 ft at 8:30AM May 24, 2024Observed: 4.13 ft at 8:45AM May 24, 2024Observed: 4.13 ft at 9:00AM May 24, 2024Observed: 4.13 ft at 9:15AM May 24, 2024Observed: 4.13 ft at 9:30AM May 24, 2024Observed: 4.13 ft at 9:45AM May 24, 2024Observed: 4.13 ft at 10:00AM May 24, 2024Observed: 4.13 ft at 10:15AM May 24, 2024Observed: 4.13 ft at 10:30AM May 24, 2024Observed: 4.13 ft at 10:45AM May 24, 2024Observed: 4.13 ft at 11:00AM May 24, 2024Observed: 4.13 ft at 11:15AM May 24, 2024Observed: 4.13 ft at 11:30AM May 24, 2024Observed: 4.13 ft at 11:45AM May 24, 2024Observed: 4.13 ft at 12:00PM May 24, 2024Observed: 4.13 ft at 12:15PM May 24, 2024Observed: 4.14 ft at 12:30PM May 24, 2024Observed: 4.14 ft at 12:45PM May 24, 2024Observed: 4.13 ft at 1:00PM May 24, 2024Observed: 4.13 ft at 1:15PM May 24, 2024Observed: 4.13 ft at 1:30PM May 24, 2024Observed: 4.13 ft at 1:45PM May 24, 2024Observed: 4.13 ft at 2:00PM May 24, 2024Observed: 4.13 ft at 2:15PM May 24, 2024Observed: 4.13 ft at 2:30PM May 24, 2024Observed: 4.13 ft at 2:45PM May 24, 2024Observed: 4.13 ft at 3:00PM May 24, 2024Observed: 4.13 ft at 3:15PM May 24, 2024Observed: 4.13 ft at 3:30PM May 24, 2024Observed: 4.13 ft at 3:45PM May 24, 2024Observed: 4.13 ft at 4:00PM May 24, 2024Observed: 4.13 ft at 4:15PM May 24, 2024Observed: 4.13 ft at 4:30PM May 24, 2024Observed: 4.13 ft at 4:45PM May 24, 2024Observed: 4.13 ft at 5:00PM May 24, 2024Observed: 4.13 ft at 5:15PM May 24, 2024Observed: 4.13 ft at 5:30PM May 24, 2024Observed: 4.13 ft at 5:45PM May 24, 2024Observed: 4.13 ft at 6:00PM May 24, 2024Observed: 4.13 ft at 6:15PM May 24, 2024Observed: 4.13 ft at 6:30PM May 24, 2024Observed: 4.12 ft at 6:45PM May 24, 2024Observed: 4.13 ft at 7:00PM May 24, 2024Observed: 4.13 ft at 7:15PM May 24, 2024Observed: 4.13 ft at 7:30PM May 24, 2024Observed: 4.13 ft at 7:45PM May 24, 2024Observed: 4.13 ft at 8:00PM May 24, 2024Observed: 4.13 ft at 8:15PM May 24, 2024Observed: 4.13 ft at 8:30PM May 24, 2024Observed: 4.13 ft at 8:45PM May 24, 2024Observed: 4.12 ft at 9:00PM May 24, 2024Observed: 4.12 ft at 9:15PM May 24, 2024Observed: 4.12 ft at 9:30PM May 24, 2024Observed: 4.12 ft at 9:45PM May 24, 2024Observed: 4.12 ft at 10:00PM May 24, 2024Observed: 4.12 ft at 10:15PM May 24, 2024Observed: 4.13 ft at 10:30PM May 24, 2024Observed: 4.12 ft at 10:45PM May 24, 2024Observed: 4.12 ft at 11:00PM May 24, 2024Observed: 4.12 ft at 11:15PM May 24, 2024Observed: 4.12 ft at 11:30PM May 24, 2024Observed: 4.12 ft at 11:45PM May 24, 2024Observed: 4.13 ft at 12:00AM May 25, 2024Observed: 4.13 ft at 12:15AM May 25, 2024Observed: 4.13 ft at 12:30AM May 25, 2024Observed: 4.13 ft at 12:45AM May 25, 2024Observed: 4.13 ft at 1:00AM May 25, 2024Highest Forecast: 4.1 ft 2:00AM May 25, 2024Highest Forecast: 4.1 ft 3:00AM May 25, 2024Highest Forecast: 4.1 ft 4:00AM May 25, 2024Highest Forecast: 4.1 ft 5:00AM May 25, 2024Highest Forecast: 4.1 ft 6:00AM May 25, 2024Highest Forecast: 4.1 ft 7:00AM May 25, 2024Highest Forecast: 4.1 ft 8:00AM May 25, 2024Highest Forecast: 4.1 ft 9:00AM May 25, 2024Highest Forecast: 4.1 ft 10:00AM May 25, 2024Highest Forecast: 4.1 ft 11:00AM May 25, 2024Highest Forecast: 4.1 ft 12:00PM May 25, 2024Highest Forecast: 4.1 ft 1:00PM May 25, 2024Highest Forecast: 4.1 ft 2:00PM May 25, 2024Highest Forecast: 4.1 ft 3:00PM May 25, 2024Highest Forecast: 4.1 ft 4:00PM May 25, 2024Highest Forecast: 4.1 ft 5:00PM May 25, 2024Highest Forecast: 4.1 ft 6:00PM May 25, 2024Highest Forecast: 4.1 ft 7:00PM May 25, 2024Highest Forecast: 4.1 ft 8:00PM May 25, 2024Highest Forecast: 4.1 ft 9:00PM May 25, 2024Highest Forecast: 4.1 ft 10:00PM May 25, 2024Highest Forecast: 4.1 ft 11:00PM May 25, 2024Highest Forecast: 4.1 ft 12:00AM May 26, 2024Highest Forecast: 4.1 ft 1:00AM May 26, 2024Highest Forecast: 4.1 ft 2:00AM May 26, 2024Highest Forecast: 4.1 ft 3:00AM May 26, 2024Highest Forecast: 4.1 ft 4:00AM May 26, 2024Highest Forecast: 4.1 ft 5:00AM May 26, 2024Highest Forecast: 4.1 ft 6:00AM May 26, 2024Highest Forecast: 4.1 ft 7:00AM May 26, 2024Highest Forecast: 4.1 ft 8:00AM May 26, 2024Highest Forecast: 4.1 ft 9:00AM May 26, 2024Highest Forecast: 4.1 ft 10:00AM May 26, 2024Highest Forecast: 4.1 ft 11:00AM May 26, 2024Highest Forecast: 4.1 ft 12:00PM May 26, 2024Highest Forecast: 4.1 ft 1:00PM May 26, 2024Highest Forecast: 4.1 ft 2:00PM May 26, 2024Highest Forecast: 4.1 ft 3:00PM May 26, 2024Highest Forecast: 4.1 ft 4:00PM May 26, 2024Highest Forecast: 4.1 ft 5:00PM May 26, 2024Highest Forecast: 4.1 ft 6:00PM May 26, 2024Highest Forecast: 4.1 ft 7:00PM May 26, 2024Highest Forecast: 4.1 ft 8:00PM May 26, 2024Highest Forecast: 4.1 ft 9:00PM May 26, 2024Highest Forecast: 4.1 ft 10:00PM May 26, 2024Highest Forecast: 4.1 ft 11:00PM May 26, 2024Highest Forecast: 4.1 ft 12:00AM May 27, 2024Highest Forecast: 4.1 ft 1:00AM May 27, 2024Highest Forecast: 4.1 ft 2:00AM May 27, 2024Highest Forecast: 4.1 ft 3:00AM May 27, 2024Highest Forecast: 4.1 ft 4:00AM May 27, 2024Highest Forecast: 4.1 ft 5:00AM May 27, 2024Highest Forecast: 4.1 ft 6:00AM May 27, 2024Highest Forecast: 4.1 ft 7:00AM May 27, 2024Highest Forecast: 4.1 ft 8:00AM May 27, 2024Highest Forecast: 4.1 ft 9:00AM May 27, 2024Highest Forecast: 4.1 ft 10:00AM May 27, 2024Highest Forecast: 4.1 ft 11:00AM May 27, 2024Highest Forecast: 4.1 ft 12:00PM May 27, 2024Highest Forecast: 4.1 ft 1:00PM May 27, 2024Highest Forecast: 4.1 ft 2:00PM May 27, 2024Highest Forecast: 4.1 ft 3:00PM May 27, 2024Highest Forecast: 4.1 ft 4:00PM May 27, 2024Highest Forecast: 4.1 ft 5:00PM May 27, 2024Highest Forecast: 4.1 ft 6:00PM May 27, 2024Highest Forecast: 4.1 ft 7:00PM May 27, 2024Highest Forecast: 4.1 ft 8:00PM May 27, 2024Highest Forecast: 4.1 ft 9:00PM May 27, 2024Highest Forecast: 4.1 ft 10:00PM May 27, 2024Highest Forecast: 4.1 ft 11:00PM May 27, 2024Highest Forecast: 4.1 ft 12:00AM May 28, 2024Highest Forecast: 4.1 ft 1:00AM May 28, 2024Highest Forecast: 4.1 ft 2:00AM May 28, 2024Highest Forecast: 4.1 ft 3:00AM May 28, 2024Highest Forecast: 4.1 ft 4:00AM May 28, 2024Highest Forecast: 4.1 ft 5:00AM May 28, 2024Highest Forecast: 4.1 ft 6:00AM May 28, 2024Highest Forecast: 4.1 ft 7:00AM May 28, 2024Highest Forecast: 4.1 ft 8:00AM May 28, 2024Highest Forecast: 4.1 ft 9:00AM May 28, 2024Highest Forecast: 4.1 ft 10:00AM May 28, 2024Highest Forecast: 4.1 ft 11:00AM May 28, 2024Highest Forecast: 4.1 ft 12:00PM May 28, 2024Highest Forecast: 4.1 ft 1:00PM May 28, 2024Highest Forecast: 4.1 ft 2:00PM May 28, 2024Highest Forecast: 4.1 ft 3:00PM May 28, 2024Highest Forecast: 4.1 ft 4:00PM May 28, 2024Highest Forecast: 4.1 ft 5:00PM May 28, 2024Highest Forecast: 4.1 ft 6:00PM May 28, 2024Highest Forecast: 4.1 ft 7:00PM May 28, 2024Highest Forecast: 4.1 ft 8:00PM May 28, 2024Highest Forecast: 4.1 ft 9:00PM May 28, 2024Highest Forecast: 4.1 ft 10:00PM May 28, 2024Highest Forecast: 4.1 ft 11:00PM May 28, 2024Highest Forecast: 4.1 ft 12:00AM May 29, 2024Highest Forecast: 4.1 ft 1:00AM May 29, 2024Highest Forecast: 4.1 ft 2:00AM May 29, 2024Highest Forecast: 4.1 ft 3:00AM May 29, 2024Highest Forecast: 4.1 ft 4:00AM May 29, 2024Highest Forecast: 4.1 ft 5:00AM May 29, 2024USGS--Water Resources of the United StatesBTEC1(plotting HGIRG) Graph Created (1:15AM May 25, 2024)ObservedForecast (issued 7:37AM May 24)Latest observed value: 4.13 ft at 1:00 AM PDT 25-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
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 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
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Page last modified: 30-Oct-2020 4:07 PM
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