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Hydrograph River at a Glance Download
San Lorenzo River (CA) at Big Trees Stage (ft)Flow (kcfs)Highest Observation: 3.19 ft at 11:15PM Apr 05, 2021Highest Observation: 3.19 ft at 11:30PM Apr 05, 2021Highest Observation: 3.19 ft at 11:45PM Apr 05, 2021Observed: 3.18 ft at 12:00AM Apr 06, 2021Highest Observation: 3.19 ft at 12:15AM Apr 06, 2021Observed: 3.18 ft at 12:30AM Apr 06, 2021Observed: 3.18 ft at 12:45AM Apr 06, 2021Observed: 3.18 ft at 1:00AM Apr 06, 2021Observed: 3.18 ft at 1:15AM Apr 06, 2021Observed: 3.18 ft at 1:30AM Apr 06, 2021Observed: 3.18 ft at 1:45AM Apr 06, 2021Observed: 3.18 ft at 2:00AM Apr 06, 2021Observed: 3.18 ft at 2:15AM Apr 06, 2021Observed: 3.18 ft at 2:30AM Apr 06, 2021Observed: 3.18 ft at 2:45AM Apr 06, 2021Observed: 3.18 ft at 3:00AM Apr 06, 2021Observed: 3.18 ft at 3:15AM Apr 06, 2021Observed: 3.18 ft at 3:30AM Apr 06, 2021Observed: 3.18 ft at 3:45AM Apr 06, 2021Observed: 3.18 ft at 4:00AM Apr 06, 2021Observed: 3.18 ft at 4:15AM Apr 06, 2021Observed: 3.18 ft at 4:30AM Apr 06, 2021Observed: 3.18 ft at 4:45AM Apr 06, 2021Observed: 3.17 ft at 5:00AM Apr 06, 2021Observed: 3.18 ft at 5:15AM Apr 06, 2021Observed: 3.18 ft at 5:30AM Apr 06, 2021Observed: 3.18 ft at 5:45AM Apr 06, 2021Observed: 3.18 ft at 6:00AM Apr 06, 2021Observed: 3.18 ft at 6:15AM Apr 06, 2021Observed: 3.18 ft at 6:30AM Apr 06, 2021Observed: 3.18 ft at 6:45AM Apr 06, 2021Observed: 3.18 ft at 7:00AM Apr 06, 2021Observed: 3.18 ft at 7:15AM Apr 06, 2021Observed: 3.18 ft at 7:30AM Apr 06, 2021Observed: 3.18 ft at 7:45AM Apr 06, 2021Observed: 3.18 ft at 8:00AM Apr 06, 2021Observed: 3.18 ft at 8:15AM Apr 06, 2021Observed: 3.18 ft at 8:30AM Apr 06, 2021Observed: 3.18 ft at 8:45AM Apr 06, 2021Observed: 3.18 ft at 9:00AM Apr 06, 2021Observed: 3.18 ft at 9:15AM Apr 06, 2021Observed: 3.18 ft at 9:30AM Apr 06, 2021Observed: 3.18 ft at 9:45AM Apr 06, 2021Observed: 3.18 ft at 10:00AM Apr 06, 2021Observed: 3.17 ft at 10:15AM Apr 06, 2021Observed: 3.18 ft at 10:30AM Apr 06, 2021Observed: 3.18 ft at 10:45AM Apr 06, 2021Observed: 3.18 ft at 11:00AM Apr 06, 2021Observed: 3.18 ft at 11:15AM Apr 06, 2021Observed: 3.18 ft at 11:30AM Apr 06, 2021Observed: 3.18 ft at 11:45AM Apr 06, 2021Observed: 3.18 ft at 12:00PM Apr 06, 2021Observed: 3.18 ft at 12:15PM Apr 06, 2021Observed: 3.18 ft at 12:30PM Apr 06, 2021Observed: 3.18 ft at 12:45PM Apr 06, 2021Observed: 3.18 ft at 1:00PM Apr 06, 2021Observed: 3.17 ft at 1:15PM Apr 06, 2021Observed: 3.17 ft at 1:30PM Apr 06, 2021Observed: 3.18 ft at 1:45PM Apr 06, 2021Observed: 3.18 ft at 2:00PM Apr 06, 2021Observed: 3.18 ft at 2:15PM Apr 06, 2021Observed: 3.18 ft at 2:30PM Apr 06, 2021Observed: 3.18 ft at 2:45PM Apr 06, 2021Observed: 3.17 ft at 3:00PM Apr 06, 2021Observed: 3.17 ft at 3:15PM Apr 06, 2021Observed: 3.15 ft at 3:30PM Apr 06, 2021Observed: 3.15 ft at 3:45PM Apr 06, 2021Observed: 3.15 ft at 4:00PM Apr 06, 2021Observed: 3.15 ft at 4:15PM Apr 06, 2021Observed: 3.15 ft at 4:30PM Apr 06, 2021Observed: 3.15 ft at 4:45PM Apr 06, 2021Observed: 3.15 ft at 5:00PM Apr 06, 2021Observed: 3.15 ft at 5:15PM Apr 06, 2021Observed: 3.15 ft at 5:30PM Apr 06, 2021Observed: 3.15 ft at 5:45PM Apr 06, 2021Observed: 3.15 ft at 6:00PM Apr 06, 2021Observed: 3.15 ft at 6:15PM Apr 06, 2021Observed: 3.15 ft at 6:30PM Apr 06, 2021Observed: 3.15 ft at 6:45PM Apr 06, 2021Observed: 3.15 ft at 7:00PM Apr 06, 2021Observed: 3.15 ft at 7:15PM Apr 06, 2021Observed: 3.15 ft at 7:30PM Apr 06, 2021Observed: 3.15 ft at 7:45PM Apr 06, 2021Observed: 3.14 ft at 8:00PM Apr 06, 2021Observed: 3.14 ft at 8:15PM Apr 06, 2021Observed: 3.14 ft at 8:30PM Apr 06, 2021Observed: 3.14 ft at 8:45PM Apr 06, 2021Observed: 3.15 ft at 9:00PM Apr 06, 2021Observed: 3.15 ft at 9:15PM Apr 06, 2021Observed: 3.15 ft at 9:30PM Apr 06, 2021Observed: 3.15 ft at 9:45PM Apr 06, 2021Observed: 3.15 ft at 10:00PM Apr 06, 2021Observed: 3.15 ft at 10:15PM Apr 06, 2021Observed: 3.15 ft at 10:30PM Apr 06, 2021Observed: 3.15 ft at 10:45PM Apr 06, 2021Observed: 3.15 ft at 11:00PM Apr 06, 2021Observed: 3.15 ft at 11:15PM Apr 06, 2021Observed: 3.15 ft at 11:30PM Apr 06, 2021Observed: 3.15 ft at 11:45PM Apr 06, 2021Observed: 3.15 ft at 12:00AM Apr 07, 2021Observed: 3.15 ft at 12:15AM Apr 07, 2021Observed: 3.15 ft at 12:30AM Apr 07, 2021Observed: 3.15 ft at 12:45AM Apr 07, 2021Observed: 3.15 ft at 1:00AM Apr 07, 2021Observed: 3.15 ft at 1:15AM Apr 07, 2021Observed: 3.15 ft at 1:30AM Apr 07, 2021Observed: 3.15 ft at 1:45AM Apr 07, 2021Observed: 3.15 ft at 2:00AM Apr 07, 2021Observed: 3.15 ft at 2:15AM Apr 07, 2021Observed: 3.15 ft at 2:30AM Apr 07, 2021Observed: 3.14 ft at 2:45AM Apr 07, 2021Observed: 3.14 ft at 3:00AM Apr 07, 2021Observed: 3.14 ft at 3:15AM Apr 07, 2021Observed: 3.15 ft at 3:30AM Apr 07, 2021Observed: 3.14 ft at 3:45AM Apr 07, 2021Observed: 3.15 ft at 4:00AM Apr 07, 2021Observed: 3.15 ft at 4:15AM Apr 07, 2021Observed: 3.15 ft at 4:30AM Apr 07, 2021Observed: 3.15 ft at 4:45AM Apr 07, 2021Observed: 3.15 ft at 5:00AM Apr 07, 2021Observed: 3.15 ft at 5:15AM Apr 07, 2021Observed: 3.15 ft at 5:30AM Apr 07, 2021Observed: 3.15 ft at 5:45AM Apr 07, 2021Observed: 3.15 ft at 6:00AM Apr 07, 2021Observed: 3.15 ft at 6:15AM Apr 07, 2021Observed: 3.15 ft at 6:30AM Apr 07, 2021Observed: 3.14 ft at 6:45AM Apr 07, 2021Observed: 3.15 ft at 7:00AM Apr 07, 2021Observed: 3.15 ft at 7:15AM Apr 07, 2021Observed: 3.15 ft at 7:30AM Apr 07, 2021Observed: 3.15 ft at 7:45AM Apr 07, 2021Observed: 3.15 ft at 8:00AM Apr 07, 2021Observed: 3.15 ft at 8:15AM Apr 07, 2021Observed: 3.15 ft at 8:30AM Apr 07, 2021Observed: 3.15 ft at 8:45AM Apr 07, 2021Observed: 3.15 ft at 9:00AM Apr 07, 2021Observed: 3.15 ft at 9:15AM Apr 07, 2021Observed: 3.14 ft at 9:30AM Apr 07, 2021Observed: 3.14 ft at 9:45AM Apr 07, 2021Observed: 3.14 ft at 10:00AM Apr 07, 2021Observed: 3.14 ft at 10:15AM Apr 07, 2021Observed: 3.14 ft at 10:30AM Apr 07, 2021Observed: 3.15 ft at 10:45AM Apr 07, 2021Observed: 3.14 ft at 11:00AM Apr 07, 2021Observed: 3.15 ft at 11:15AM Apr 07, 2021Observed: 3.15 ft at 11:30AM Apr 07, 2021Observed: 3.15 ft at 11:45AM Apr 07, 2021Observed: 3.15 ft at 12:00PM Apr 07, 2021Observed: 3.14 ft at 12:15PM Apr 07, 2021Observed: 3.14 ft at 12:30PM Apr 07, 2021Observed: 3.14 ft at 12:45PM Apr 07, 2021Observed: 3.15 ft at 1:00PM Apr 07, 2021Observed: 3.14 ft at 1:15PM Apr 07, 2021Observed: 3.14 ft at 1:30PM Apr 07, 2021Observed: 3.14 ft at 1:45PM Apr 07, 2021Observed: 3.14 ft at 2:00PM Apr 07, 2021Observed: 3.14 ft at 2:15PM Apr 07, 2021Observed: 3.14 ft at 2:30PM Apr 07, 2021Observed: 3.14 ft at 2:45PM Apr 07, 2021Observed: 3.14 ft at 3:00PM Apr 07, 2021Observed: 3.14 ft at 3:15PM Apr 07, 2021Observed: 3.14 ft at 3:30PM Apr 07, 2021Observed: 3.14 ft at 3:45PM Apr 07, 2021Observed: 3.14 ft at 4:00PM Apr 07, 2021Observed: 3.14 ft at 4:15PM Apr 07, 2021Observed: 3.14 ft at 4:30PM Apr 07, 2021Observed: 3.14 ft at 4:45PM Apr 07, 2021Observed: 3.14 ft at 5:00PM Apr 07, 2021Observed: 3.14 ft at 5:15PM Apr 07, 2021Observed: 3.14 ft at 5:30PM Apr 07, 2021Observed: 3.14 ft at 5:45PM Apr 07, 2021Observed: 3.14 ft at 6:00PM Apr 07, 2021Observed: 3.14 ft at 6:15PM Apr 07, 2021Observed: 3.14 ft at 6:30PM Apr 07, 2021Observed: 3.14 ft at 6:45PM Apr 07, 2021Observed: 3.14 ft at 7:00PM Apr 07, 2021Observed: 3.13 ft at 7:15PM Apr 07, 2021Observed: 3.13 ft at 7:30PM Apr 07, 2021Observed: 3.13 ft at 7:45PM Apr 07, 2021Observed: 3.14 ft at 8:00PM Apr 07, 2021Observed: 3.14 ft at 8:15PM Apr 07, 2021Observed: 3.13 ft at 8:30PM Apr 07, 2021Observed: 3.14 ft at 8:45PM Apr 07, 2021Observed: 3.14 ft at 9:00PM Apr 07, 2021Observed: 3.14 ft at 9:15PM Apr 07, 2021Observed: 3.14 ft at 9:30PM Apr 07, 2021Observed: 3.14 ft at 9:45PM Apr 07, 2021Observed: 3.14 ft at 10:00PM Apr 07, 2021Observed: 3.13 ft at 10:15PM Apr 07, 2021Observed: 3.14 ft at 10:30PM Apr 07, 2021Observed: 3.14 ft at 10:45PM Apr 07, 2021Observed: 3.13 ft at 11:00PM Apr 07, 2021Observed: 3.13 ft at 11:15PM Apr 07, 2021Observed: 3.13 ft at 11:30PM Apr 07, 2021Observed: 3.14 ft at 11:45PM Apr 07, 2021Observed: 3.13 ft at 12:00AM Apr 08, 2021Observed: 3.14 ft at 12:15AM Apr 08, 2021Observed: 3.13 ft at 12:30AM Apr 08, 2021Observed: 3.13 ft at 12:45AM Apr 08, 2021Observed: 3.14 ft at 1:00AM Apr 08, 2021Observed: 3.14 ft at 1:15AM Apr 08, 2021Observed: 3.14 ft at 1:30AM Apr 08, 2021Observed: 3.14 ft at 1:45AM Apr 08, 2021Observed: 3.14 ft at 2:00AM Apr 08, 2021Observed: 3.14 ft at 2:15AM Apr 08, 2021Observed: 3.14 ft at 2:30AM Apr 08, 2021Observed: 3.14 ft at 2:45AM Apr 08, 2021Observed: 3.14 ft at 3:00AM Apr 08, 2021Observed: 3.14 ft at 3:15AM Apr 08, 2021Observed: 3.14 ft at 3:30AM Apr 08, 2021Observed: 3.14 ft at 3:45AM Apr 08, 2021Observed: 3.14 ft at 4:00AM Apr 08, 2021Observed: 3.14 ft at 4:15AM Apr 08, 2021Observed: 3.14 ft at 4:30AM Apr 08, 2021Observed: 3.14 ft at 4:45AM Apr 08, 2021Observed: 3.14 ft at 5:00AM Apr 08, 2021Observed: 3.14 ft at 5:15AM Apr 08, 2021Observed: 3.14 ft at 5:30AM Apr 08, 2021Observed: 3.14 ft at 5:45AM Apr 08, 2021Observed: 3.14 ft at 6:00AM Apr 08, 2021Observed: 3.14 ft at 6:15AM Apr 08, 2021Observed: 3.14 ft at 6:30AM Apr 08, 2021Observed: 3.14 ft at 6:45AM Apr 08, 2021Observed: 3.14 ft at 7:00AM Apr 08, 2021Observed: 3.14 ft at 7:15AM Apr 08, 2021Observed: 3.14 ft at 7:30AM Apr 08, 2021Observed: 3.14 ft at 7:45AM Apr 08, 2021Observed: 3.14 ft at 8:00AM Apr 08, 2021Observed: 3.13 ft at 8:15AM Apr 08, 2021Observed: 3.14 ft at 8:30AM Apr 08, 2021Observed: 3.14 ft at 8:45AM Apr 08, 2021Observed: 3.14 ft at 9:00AM Apr 08, 2021Observed: 3.14 ft at 9:15AM Apr 08, 2021Observed: 3.14 ft at 9:30AM Apr 08, 2021Observed: 3.14 ft at 9:45AM Apr 08, 2021Observed: 3.13 ft at 10:00AM Apr 08, 2021Observed: 3.13 ft at 10:15AM Apr 08, 2021Observed: 3.13 ft at 10:30AM Apr 08, 2021Observed: 3.14 ft at 10:45AM Apr 08, 2021Observed: 3.14 ft at 11:00AM Apr 08, 2021Observed: 3.13 ft at 11:15AM Apr 08, 2021Observed: 3.14 ft at 11:30AM Apr 08, 2021Observed: 3.14 ft at 11:45AM Apr 08, 2021Observed: 3.14 ft at 12:00PM Apr 08, 2021Observed: 3.12 ft at 12:15PM Apr 08, 2021Observed: 3.13 ft at 12:30PM Apr 08, 2021Observed: 3.14 ft at 12:45PM Apr 08, 2021Observed: 3.14 ft at 1:00PM Apr 08, 2021Observed: 3.14 ft at 1:15PM Apr 08, 2021Observed: 3.13 ft at 1:30PM Apr 08, 2021Observed: 3.14 ft at 1:45PM Apr 08, 2021Observed: 3.13 ft at 2:00PM Apr 08, 2021Observed: 3.14 ft at 2:15PM Apr 08, 2021Observed: 3.13 ft at 2:30PM Apr 08, 2021Observed: 3.13 ft at 2:45PM Apr 08, 2021Observed: 3.13 ft at 3:00PM Apr 08, 2021Observed: 3.13 ft at 3:15PM Apr 08, 2021Observed: 3.13 ft at 3:30PM Apr 08, 2021Observed: 3.13 ft at 3:45PM Apr 08, 2021Observed: 3.13 ft at 4:00PM Apr 08, 2021Observed: 3.13 ft at 4:15PM Apr 08, 2021Observed: 3.13 ft at 4:30PM Apr 08, 2021Observed: 3.13 ft at 4:45PM Apr 08, 2021Observed: 3.13 ft at 5:00PM Apr 08, 2021Observed: 3.13 ft at 5:15PM Apr 08, 2021Observed: 3.13 ft at 5:30PM Apr 08, 2021Observed: 3.13 ft at 5:45PM Apr 08, 2021Observed: 3.13 ft at 6:00PM Apr 08, 2021Observed: 3.13 ft at 6:15PM Apr 08, 2021Observed: 3.13 ft at 6:30PM Apr 08, 2021Observed: 3.13 ft at 6:45PM Apr 08, 2021Observed: 3.13 ft at 7:00PM Apr 08, 2021Observed: 3.12 ft at 7:15PM Apr 08, 2021Observed: 3.13 ft at 7:30PM Apr 08, 2021Observed: 3.13 ft at 7:45PM Apr 08, 2021Observed: 3.13 ft at 8:00PM Apr 08, 2021Observed: 3.13 ft at 8:15PM Apr 08, 2021Observed: 3.13 ft at 8:30PM Apr 08, 2021Observed: 3.13 ft at 8:45PM Apr 08, 2021Observed: 3.13 ft at 9:00PM Apr 08, 2021Observed: 3.13 ft at 9:15PM Apr 08, 2021Observed: 3.13 ft at 9:30PM Apr 08, 2021Observed: 3.13 ft at 9:45PM Apr 08, 2021Observed: 3.13 ft at 10:00PM Apr 08, 2021Observed: 3.13 ft at 10:15PM Apr 08, 2021Observed: 3.13 ft at 10:30PM Apr 08, 2021Observed: 3.13 ft at 10:45PM Apr 08, 2021Observed: 3.13 ft at 11:00PM Apr 08, 2021Observed: 3.13 ft at 11:15PM Apr 08, 2021Observed: 3.13 ft at 11:30PM Apr 08, 2021Observed: 3.13 ft at 11:45PM Apr 08, 2021Observed: 3.13 ft at 12:00AM Apr 09, 2021Observed: 3.13 ft at 12:15AM Apr 09, 2021Observed: 3.13 ft at 12:30AM Apr 09, 2021Observed: 3.13 ft at 12:45AM Apr 09, 2021Observed: 3.13 ft at 1:00AM Apr 09, 2021Observed: 3.13 ft at 1:15AM Apr 09, 2021Observed: 3.13 ft at 1:30AM Apr 09, 2021Observed: 3.13 ft at 1:45AM Apr 09, 2021Observed: 3.13 ft at 2:00AM Apr 09, 2021Observed: 3.13 ft at 2:15AM Apr 09, 2021Observed: 3.13 ft at 2:30AM Apr 09, 2021Observed: 3.13 ft at 2:45AM Apr 09, 2021Observed: 3.13 ft at 3:00AM Apr 09, 2021Observed: 3.13 ft at 3:15AM Apr 09, 2021Observed: 3.13 ft at 3:30AM Apr 09, 2021Observed: 3.13 ft at 3:45AM Apr 09, 2021Observed: 3.13 ft at 4:00AM Apr 09, 2021Observed: 3.13 ft at 4:15AM Apr 09, 2021Observed: 3.13 ft at 4:30AM Apr 09, 2021Observed: 3.13 ft at 4:45AM Apr 09, 2021Observed: 3.13 ft at 5:00AM Apr 09, 2021Observed: 3.13 ft at 5:15AM Apr 09, 2021Observed: 3.13 ft at 5:30AM Apr 09, 2021Observed: 3.13 ft at 5:45AM Apr 09, 2021Observed: 3.13 ft at 6:00AM Apr 09, 2021Observed: 3.13 ft at 6:15AM Apr 09, 2021Observed: 3.13 ft at 6:30AM Apr 09, 2021Observed: 3.13 ft at 6:45AM Apr 09, 2021Observed: 3.13 ft at 7:00AM Apr 09, 2021Observed: 3.13 ft at 7:15AM Apr 09, 2021Observed: 3.13 ft at 7:30AM Apr 09, 2021Observed: 3.13 ft at 7:45AM Apr 09, 2021Observed: 3.13 ft at 8:00AM Apr 09, 2021Observed: 3.13 ft at 8:15AM Apr 09, 2021Observed: 3.13 ft at 8:30AM Apr 09, 2021Observed: 3.13 ft at 8:45AM Apr 09, 2021Observed: 3.13 ft at 9:00AM Apr 09, 2021Observed: 3.12 ft at 9:15AM Apr 09, 2021Observed: 3.13 ft at 9:30AM Apr 09, 2021Observed: 3.13 ft at 9:45AM Apr 09, 2021Observed: 3.13 ft at 10:00AM Apr 09, 2021Observed: 3.13 ft at 10:15AM Apr 09, 2021Observed: 3.13 ft at 10:30AM Apr 09, 2021Observed: 3.13 ft at 10:45AM Apr 09, 2021Observed: 3.13 ft at 11:00AM Apr 09, 2021Observed: 3.13 ft at 11:15AM Apr 09, 2021Observed: 3.13 ft at 11:30AM Apr 09, 2021Observed: 3.13 ft at 11:45AM Apr 09, 2021Observed: 3.13 ft at 12:00PM Apr 09, 2021Observed: 3.13 ft at 12:15PM Apr 09, 2021Observed: 3.13 ft at 12:30PM Apr 09, 2021Observed: 3.13 ft at 12:45PM Apr 09, 2021Observed: 3.13 ft at 1:00PM Apr 09, 2021Observed: 3.13 ft at 1:15PM Apr 09, 2021Observed: 3.13 ft at 1:30PM Apr 09, 2021Observed: 3.13 ft at 1:45PM Apr 09, 2021Observed: 3.13 ft at 2:00PM Apr 09, 2021Observed: 3.13 ft at 2:15PM Apr 09, 2021Observed: 3.13 ft at 2:30PM Apr 09, 2021Observed: 3.13 ft at 2:45PM Apr 09, 2021Observed: 3.13 ft at 3:00PM Apr 09, 2021Observed: 3.13 ft at 3:15PM Apr 09, 2021Observed: 3.12 ft at 3:30PM Apr 09, 2021Observed: 3.13 ft at 3:45PM Apr 09, 2021Observed: 3.12 ft at 4:00PM Apr 09, 2021Observed: 3.12 ft at 4:15PM Apr 09, 2021Observed: 3.13 ft at 4:30PM Apr 09, 2021Observed: 3.13 ft at 4:45PM Apr 09, 2021Observed: 3.13 ft at 5:00PM Apr 09, 2021Observed: 3.13 ft at 5:15PM Apr 09, 2021Observed: 3.13 ft at 5:30PM Apr 09, 2021Observed: 3.12 ft at 5:45PM Apr 09, 2021Observed: 3.12 ft at 6:00PM Apr 09, 2021Observed: 3.12 ft at 6:15PM Apr 09, 2021Observed: 3.12 ft at 6:30PM Apr 09, 2021Observed: 3.12 ft at 6:45PM Apr 09, 2021Observed: 3.12 ft at 7:00PM Apr 09, 2021Observed: 3.12 ft at 7:15PM Apr 09, 2021Observed: 3.12 ft at 7:30PM Apr 09, 2021Observed: 3.12 ft at 7:45PM Apr 09, 2021Observed: 3.12 ft at 8:00PM Apr 09, 2021Observed: 3.12 ft at 8:15PM Apr 09, 2021Observed: 3.12 ft at 8:30PM Apr 09, 2021Observed: 3.12 ft at 8:45PM Apr 09, 2021Observed: 3.12 ft at 9:00PM Apr 09, 2021Observed: 3.13 ft at 9:15PM Apr 09, 2021Observed: 3.12 ft at 9:30PM Apr 09, 2021Observed: 3.13 ft at 9:45PM Apr 09, 2021Observed: 3.13 ft at 10:00PM Apr 09, 2021Observed: 3.12 ft at 10:15PM Apr 09, 2021Observed: 3.12 ft at 10:30PM Apr 09, 2021Observed: 3.12 ft at 10:45PM Apr 09, 2021Observed: 3.12 ft at 11:00PM Apr 09, 2021Observed: 3.12 ft at 11:15PM Apr 09, 2021Observed: 3.12 ft at 11:30PM Apr 09, 2021Observed: 3.12 ft at 11:45PM Apr 09, 2021Observed: 3.12 ft at 12:00AM Apr 10, 2021Observed: 3.12 ft at 12:15AM Apr 10, 2021Observed: 3.13 ft at 12:30AM Apr 10, 2021Observed: 3.13 ft at 12:45AM Apr 10, 2021Observed: 3.13 ft at 1:00AM Apr 10, 2021Observed: 3.13 ft at 1:15AM Apr 10, 2021Observed: 3.13 ft at 1:30AM Apr 10, 2021Observed: 3.13 ft at 1:45AM Apr 10, 2021Observed: 3.13 ft at 2:00AM Apr 10, 2021Observed: 3.13 ft at 2:15AM Apr 10, 2021Observed: 3.13 ft at 2:30AM Apr 10, 2021Observed: 3.13 ft at 2:45AM Apr 10, 2021Observed: 3.13 ft at 3:00AM Apr 10, 2021Observed: 3.13 ft at 3:15AM Apr 10, 2021Observed: 3.13 ft at 3:30AM Apr 10, 2021Observed: 3.13 ft at 3:45AM Apr 10, 2021Observed: 3.13 ft at 4:00AM Apr 10, 2021Observed: 3.13 ft at 4:15AM Apr 10, 2021Observed: 3.12 ft at 4:30AM Apr 10, 2021Observed: 3.13 ft at 4:45AM Apr 10, 2021Observed: 3.13 ft at 5:00AM Apr 10, 2021Observed: 3.13 ft at 5:15AM Apr 10, 2021Observed: 3.13 ft at 5:30AM Apr 10, 2021Observed: 3.13 ft at 5:45AM Apr 10, 2021Observed: 3.13 ft at 6:00AM Apr 10, 2021Observed: 3.12 ft at 6:15AM Apr 10, 2021Observed: 3.12 ft at 6:30AM Apr 10, 2021Observed: 3.12 ft at 6:45AM Apr 10, 2021Observed: 3.13 ft at 7:00AM Apr 10, 2021Observed: 3.13 ft at 7:15AM Apr 10, 2021Observed: 3.12 ft at 7:30AM Apr 10, 2021Observed: 3.13 ft at 7:45AM Apr 10, 2021Observed: 3.13 ft at 8:00AM Apr 10, 2021Observed: 3.13 ft at 8:15AM Apr 10, 2021Observed: 3.13 ft at 8:30AM Apr 10, 2021Observed: 3.13 ft at 8:45AM Apr 10, 2021Observed: 3.13 ft at 9:00AM Apr 10, 2021Observed: 3.12 ft at 9:15AM Apr 10, 2021Observed: 3.12 ft at 9:30AM Apr 10, 2021Observed: 3.12 ft at 9:45AM Apr 10, 2021Observed: 3.12 ft at 10:00AM Apr 10, 2021Observed: 3.12 ft at 10:15AM Apr 10, 2021Observed: 3.12 ft at 10:30AM Apr 10, 2021Observed: 3.13 ft at 10:45AM Apr 10, 2021Observed: 3.13 ft at 11:00AM Apr 10, 2021Observed: 3.13 ft at 11:15AM Apr 10, 2021Observed: 3.13 ft at 11:30AM Apr 10, 2021Observed: 3.13 ft at 11:45AM Apr 10, 2021Observed: 3.13 ft at 12:00PM Apr 10, 2021Observed: 3.13 ft at 12:15PM Apr 10, 2021Observed: 3.12 ft at 12:30PM Apr 10, 2021Observed: 3.12 ft at 12:45PM Apr 10, 2021Observed: 3.12 ft at 1:00PM Apr 10, 2021Observed: 3.12 ft at 1:15PM Apr 10, 2021Observed: 3.12 ft at 1:30PM Apr 10, 2021Observed: 3.12 ft at 1:45PM Apr 10, 2021Observed: 3.12 ft at 2:00PM Apr 10, 2021Observed: 3.12 ft at 2:15PM Apr 10, 2021Observed: 3.12 ft at 2:30PM Apr 10, 2021Observed: 3.12 ft at 2:45PM Apr 10, 2021Observed: 3.12 ft at 3:00PM Apr 10, 2021Observed: 3.12 ft at 3:15PM Apr 10, 2021Observed: 3.12 ft at 3:30PM Apr 10, 2021Observed: 3.12 ft at 3:45PM Apr 10, 2021Observed: 3.12 ft at 4:00PM Apr 10, 2021Observed: 3.12 ft at 4:15PM Apr 10, 2021Observed: 3.12 ft at 4:30PM Apr 10, 2021Observed: 3.12 ft at 4:45PM Apr 10, 2021Observed: 3.12 ft at 5:00PM Apr 10, 2021Observed: 3.12 ft at 5:15PM Apr 10, 2021Observed: 3.12 ft at 5:30PM Apr 10, 2021Observed: 3.12 ft at 5:45PM Apr 10, 2021Observed: 3.12 ft at 6:00PM Apr 10, 2021Observed: 3.12 ft at 6:15PM Apr 10, 2021Observed: 3.11 ft at 6:30PM Apr 10, 2021Observed: 3.12 ft at 6:45PM Apr 10, 2021Observed: 3.11 ft at 7:00PM Apr 10, 2021Observed: 3.12 ft at 7:15PM Apr 10, 2021Observed: 3.12 ft at 7:30PM Apr 10, 2021Observed: 3.11 ft at 7:45PM Apr 10, 2021Observed: 3.11 ft at 8:00PM Apr 10, 2021Observed: 3.11 ft at 8:15PM Apr 10, 2021Observed: 3.12 ft at 8:30PM Apr 10, 2021Observed: 3.12 ft at 8:45PM Apr 10, 2021Observed: 3.12 ft at 9:00PM Apr 10, 2021Observed: 3.12 ft at 9:15PM Apr 10, 2021Observed: 3.12 ft at 9:30PM Apr 10, 2021Observed: 3.12 ft at 9:45PM Apr 10, 2021Observed: 3.12 ft at 10:00PM Apr 10, 2021Observed: 3.12 ft at 10:15PM Apr 10, 2021Observed: 3.11 ft at 10:30PM Apr 10, 2021Highest Forecast: 3.1 ft 12:00AM Apr 11, 2021Highest Forecast: 3.1 ft 1:00AM Apr 11, 2021Highest Forecast: 3.1 ft 2:00AM Apr 11, 2021Highest Forecast: 3.1 ft 3:00AM Apr 11, 2021Highest Forecast: 3.1 ft 4:00AM Apr 11, 2021Highest Forecast: 3.1 ft 5:00AM Apr 11, 2021Highest Forecast: 3.1 ft 6:00AM Apr 11, 2021Highest Forecast: 3.1 ft 7:00AM Apr 11, 2021Highest Forecast: 3.1 ft 8:00AM Apr 11, 2021Highest Forecast: 3.1 ft 9:00AM Apr 11, 2021Highest Forecast: 3.1 ft 10:00AM Apr 11, 2021Highest Forecast: 3.1 ft 11:00AM Apr 11, 2021Highest Forecast: 3.1 ft 12:00PM Apr 11, 2021Highest Forecast: 3.1 ft 1:00PM Apr 11, 2021Highest Forecast: 3.1 ft 2:00PM Apr 11, 2021Highest Forecast: 3.1 ft 3:00PM Apr 11, 2021Highest Forecast: 3.1 ft 4:00PM Apr 11, 2021Highest Forecast: 3.1 ft 5:00PM Apr 11, 2021Highest Forecast: 3.1 ft 6:00PM Apr 11, 2021Highest Forecast: 3.1 ft 7:00PM Apr 11, 2021Highest Forecast: 3.1 ft 8:00PM Apr 11, 2021Highest Forecast: 3.1 ft 9:00PM Apr 11, 2021Highest Forecast: 3.1 ft 10:00PM Apr 11, 2021Highest Forecast: 3.1 ft 11:00PM Apr 11, 2021Highest Forecast: 3.1 ft 12:00AM Apr 12, 2021Highest Forecast: 3.1 ft 1:00AM Apr 12, 2021Highest Forecast: 3.1 ft 2:00AM Apr 12, 2021Highest Forecast: 3.1 ft 3:00AM Apr 12, 2021Highest Forecast: 3.1 ft 4:00AM Apr 12, 2021Highest Forecast: 3.1 ft 5:00AM Apr 12, 2021Highest Forecast: 3.1 ft 6:00AM Apr 12, 2021Highest Forecast: 3.1 ft 7:00AM Apr 12, 2021Highest Forecast: 3.1 ft 8:00AM Apr 12, 2021Highest Forecast: 3.1 ft 9:00AM Apr 12, 2021Highest Forecast: 3.1 ft 10:00AM Apr 12, 2021Highest Forecast: 3.1 ft 11:00AM Apr 12, 2021Highest Forecast: 3.1 ft 12:00PM Apr 12, 2021Highest Forecast: 3.1 ft 1:00PM Apr 12, 2021Highest Forecast: 3.1 ft 2:00PM Apr 12, 2021Highest Forecast: 3.1 ft 3:00PM Apr 12, 2021Highest Forecast: 3.1 ft 4:00PM Apr 12, 2021Highest Forecast: 3.1 ft 5:00PM Apr 12, 2021Highest Forecast: 3.1 ft 6:00PM Apr 12, 2021Highest Forecast: 3.1 ft 7:00PM Apr 12, 2021Highest Forecast: 3.1 ft 8:00PM Apr 12, 2021Highest Forecast: 3.1 ft 9:00PM Apr 12, 2021Highest Forecast: 3.1 ft 10:00PM Apr 12, 2021Highest Forecast: 3.1 ft 11:00PM Apr 12, 2021Highest Forecast: 3.1 ft 12:00AM Apr 13, 2021Highest Forecast: 3.1 ft 1:00AM Apr 13, 2021Highest Forecast: 3.1 ft 2:00AM Apr 13, 2021Highest Forecast: 3.1 ft 3:00AM Apr 13, 2021Highest Forecast: 3.1 ft 4:00AM Apr 13, 2021Highest Forecast: 3.1 ft 5:00AM Apr 13, 2021Highest Forecast: 3.1 ft 6:00AM Apr 13, 2021Highest Forecast: 3.1 ft 7:00AM Apr 13, 2021Highest Forecast: 3.1 ft 8:00AM Apr 13, 2021Highest Forecast: 3.1 ft 9:00AM Apr 13, 2021Highest Forecast: 3.1 ft 10:00AM Apr 13, 2021Highest Forecast: 3.1 ft 11:00AM Apr 13, 2021Highest Forecast: 3.1 ft 12:00PM Apr 13, 2021Highest Forecast: 3.1 ft 1:00PM Apr 13, 2021Highest Forecast: 3.1 ft 2:00PM Apr 13, 2021Highest Forecast: 3.1 ft 3:00PM Apr 13, 2021Highest Forecast: 3.1 ft 4:00PM Apr 13, 2021Highest Forecast: 3.1 ft 5:00PM Apr 13, 2021Highest Forecast: 3.1 ft 6:00PM Apr 13, 2021Highest Forecast: 3.1 ft 7:00PM Apr 13, 2021Highest Forecast: 3.1 ft 8:00PM Apr 13, 2021Highest Forecast: 3.1 ft 9:00PM Apr 13, 2021Highest Forecast: 3.1 ft 10:00PM Apr 13, 2021Highest Forecast: 3.1 ft 11:00PM Apr 13, 2021Highest Forecast: 3.1 ft 12:00AM Apr 14, 2021Highest Forecast: 3.1 ft 1:00AM Apr 14, 2021Highest Forecast: 3.1 ft 2:00AM Apr 14, 2021Highest Forecast: 3.1 ft 3:00AM Apr 14, 2021Highest Forecast: 3.1 ft 4:00AM Apr 14, 2021Highest Forecast: 3.1 ft 5:00AM Apr 14, 2021Highest Forecast: 3.1 ft 6:00AM Apr 14, 2021Highest Forecast: 3.1 ft 7:00AM Apr 14, 2021Highest Forecast: 3.1 ft 8:00AM Apr 14, 2021Highest Forecast: 3.1 ft 9:00AM Apr 14, 2021Highest Forecast: 3.1 ft 10:00AM Apr 14, 2021Highest Forecast: 3.1 ft 11:00AM Apr 14, 2021Highest Forecast: 3.1 ft 12:00PM Apr 14, 2021Highest Forecast: 3.1 ft 1:00PM Apr 14, 2021Highest Forecast: 3.1 ft 2:00PM Apr 14, 2021Highest Forecast: 3.1 ft 3:00PM Apr 14, 2021Highest Forecast: 3.1 ft 4:00PM Apr 14, 2021Highest Forecast: 3.1 ft 5:00PM Apr 14, 2021Highest Forecast: 3.1 ft 6:00PM Apr 14, 2021Highest Forecast: 3.1 ft 7:00PM Apr 14, 2021Highest Forecast: 3.1 ft 8:00PM Apr 14, 2021Highest Forecast: 3.1 ft 9:00PM Apr 14, 2021Highest Forecast: 3.1 ft 10:00PM Apr 14, 2021Highest Forecast: 3.1 ft 11:00PM Apr 14, 2021Highest Forecast: 3.1 ft 12:00AM Apr 15, 2021Highest Forecast: 3.1 ft 1:00AM Apr 15, 2021Highest Forecast: 3.1 ft 2:00AM Apr 15, 2021Highest Forecast: 3.1 ft 3:00AM Apr 15, 2021Highest Forecast: 3.1 ft 4:00AM Apr 15, 2021Highest Forecast: 3.1 ft 5:00AM Apr 15, 2021USGS--Water Resources of the United StatesBTEC1(plotting HGIRG) Graph Created (11:00PM Apr 10, 2021)ObservedForecast (issued 8:50AM Apr 10)Latest observed value: 3.11 ft at 10:30 PM PDT 10-Apr-2021. Flood Stage is 16.5 ft
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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
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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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