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Hydrograph River at a Glance Download
San Lorenzo River (CA) at Big Trees Stage (ft)Flow (kcfs)Observed: 2.83 ft at 12:30AM Sep 16, 2021Observed: 2.83 ft at 12:45AM Sep 16, 2021Observed: 2.83 ft at 1:00AM Sep 16, 2021Observed: 2.83 ft at 1:15AM Sep 16, 2021Observed: 2.83 ft at 1:30AM Sep 16, 2021Observed: 2.83 ft at 1:45AM Sep 16, 2021Observed: 2.83 ft at 2:00AM Sep 16, 2021Observed: 2.83 ft at 2:15AM Sep 16, 2021Observed: 2.83 ft at 2:30AM Sep 16, 2021Observed: 2.83 ft at 2:45AM Sep 16, 2021Observed: 2.83 ft at 3:00AM Sep 16, 2021Observed: 2.83 ft at 3:15AM Sep 16, 2021Observed: 2.83 ft at 3:30AM Sep 16, 2021Observed: 2.83 ft at 3:45AM Sep 16, 2021Observed: 2.83 ft at 4:00AM Sep 16, 2021Observed: 2.83 ft at 4:15AM Sep 16, 2021Observed: 2.83 ft at 4:30AM Sep 16, 2021Observed: 2.83 ft at 4:45AM Sep 16, 2021Observed: 2.84 ft at 5:00AM Sep 16, 2021Observed: 2.83 ft at 5:15AM Sep 16, 2021Observed: 2.84 ft at 5:30AM Sep 16, 2021Observed: 2.84 ft at 5:45AM Sep 16, 2021Observed: 2.84 ft at 6:00AM Sep 16, 2021Observed: 2.84 ft at 6:15AM Sep 16, 2021Observed: 2.84 ft at 6:30AM Sep 16, 2021Observed: 2.84 ft at 6:45AM Sep 16, 2021Observed: 2.84 ft at 7:00AM Sep 16, 2021Observed: 2.83 ft at 7:15AM Sep 16, 2021Observed: 2.84 ft at 7:30AM Sep 16, 2021Observed: 2.84 ft at 7:45AM Sep 16, 2021Observed: 2.84 ft at 8:00AM Sep 16, 2021Observed: 2.84 ft at 8:15AM Sep 16, 2021Observed: 2.84 ft at 8:30AM Sep 16, 2021Observed: 2.84 ft at 8:45AM Sep 16, 2021Observed: 2.84 ft at 9:00AM Sep 16, 2021Observed: 2.84 ft at 9:15AM Sep 16, 2021Observed: 2.85 ft at 9:30AM Sep 16, 2021Observed: 2.84 ft at 9:45AM Sep 16, 2021Observed: 2.85 ft at 10:00AM Sep 16, 2021Observed: 2.85 ft at 10:15AM Sep 16, 2021Observed: 2.85 ft at 10:30AM Sep 16, 2021Observed: 2.85 ft at 10:45AM Sep 16, 2021Observed: 2.85 ft at 11:00AM Sep 16, 2021Observed: 2.85 ft at 11:15AM Sep 16, 2021Observed: 2.85 ft at 11:30AM Sep 16, 2021Observed: 2.85 ft at 11:45AM Sep 16, 2021Observed: 2.85 ft at 12:00PM Sep 16, 2021Observed: 2.85 ft at 12:15PM Sep 16, 2021Observed: 2.85 ft at 12:30PM Sep 16, 2021Observed: 2.85 ft at 12:45PM Sep 16, 2021Observed: 2.84 ft at 1:00PM Sep 16, 2021Observed: 2.82 ft at 1:15PM Sep 16, 2021Observed: 2.85 ft at 1:30PM Sep 16, 2021Observed: 2.85 ft at 1:45PM Sep 16, 2021Observed: 2.84 ft at 2:00PM Sep 16, 2021Observed: 2.84 ft at 2:15PM Sep 16, 2021Observed: 2.85 ft at 2:30PM Sep 16, 2021Observed: 2.85 ft at 2:45PM Sep 16, 2021Observed: 2.85 ft at 3:00PM Sep 16, 2021Observed: 2.85 ft at 3:15PM Sep 16, 2021Observed: 2.85 ft at 3:30PM Sep 16, 2021Observed: 2.85 ft at 3:45PM Sep 16, 2021Observed: 2.85 ft at 4:00PM Sep 16, 2021Observed: 2.85 ft at 4:15PM Sep 16, 2021Observed: 2.85 ft at 4:30PM Sep 16, 2021Observed: 2.84 ft at 4:45PM Sep 16, 2021Observed: 2.84 ft at 5:00PM Sep 16, 2021Observed: 2.84 ft at 5:15PM Sep 16, 2021Observed: 2.84 ft at 5:30PM Sep 16, 2021Observed: 2.84 ft at 5:45PM Sep 16, 2021Observed: 2.84 ft at 6:00PM Sep 16, 2021Observed: 2.84 ft at 6:15PM Sep 16, 2021Observed: 2.84 ft at 6:30PM Sep 16, 2021Observed: 2.84 ft at 6:45PM Sep 16, 2021Observed: 2.84 ft at 7:00PM Sep 16, 2021Observed: 2.84 ft at 7:15PM Sep 16, 2021Observed: 2.85 ft at 7:30PM Sep 16, 2021Observed: 2.84 ft at 7:45PM Sep 16, 2021Observed: 2.84 ft at 8:00PM Sep 16, 2021Observed: 2.84 ft at 8:15PM Sep 16, 2021Observed: 2.84 ft at 8:30PM Sep 16, 2021Observed: 2.84 ft at 8:45PM Sep 16, 2021Observed: 2.84 ft at 9:00PM Sep 16, 2021Observed: 2.84 ft at 9:15PM Sep 16, 2021Observed: 2.84 ft at 9:30PM Sep 16, 2021Observed: 2.84 ft at 9:45PM Sep 16, 2021Observed: 2.84 ft at 10:00PM Sep 16, 2021Observed: 2.84 ft at 10:15PM Sep 16, 2021Observed: 2.84 ft at 10:30PM Sep 16, 2021Observed: 2.84 ft at 10:45PM Sep 16, 2021Observed: 2.84 ft at 11:00PM Sep 16, 2021Observed: 2.84 ft at 11:15PM Sep 16, 2021Observed: 2.84 ft at 11:30PM Sep 16, 2021Observed: 2.84 ft at 11:45PM Sep 16, 2021Observed: 2.84 ft at 12:00AM Sep 17, 2021Observed: 2.84 ft at 12:15AM Sep 17, 2021Observed: 2.84 ft at 12:30AM Sep 17, 2021Observed: 2.84 ft at 12:45AM Sep 17, 2021Observed: 2.84 ft at 1:00AM Sep 17, 2021Observed: 2.85 ft at 1:15AM Sep 17, 2021Observed: 2.85 ft at 1:30AM Sep 17, 2021Observed: 2.85 ft at 1:45AM Sep 17, 2021Observed: 2.85 ft at 2:00AM Sep 17, 2021Observed: 2.85 ft at 2:15AM Sep 17, 2021Observed: 2.85 ft at 2:30AM Sep 17, 2021Observed: 2.85 ft at 2:45AM Sep 17, 2021Observed: 2.85 ft at 3:00AM Sep 17, 2021Observed: 2.85 ft at 3:15AM Sep 17, 2021Observed: 2.85 ft at 3:30AM Sep 17, 2021Observed: 2.85 ft at 3:45AM Sep 17, 2021Observed: 2.85 ft at 4:00AM Sep 17, 2021Observed: 2.85 ft at 4:15AM Sep 17, 2021Observed: 2.85 ft at 4:30AM Sep 17, 2021Observed: 2.85 ft at 4:45AM Sep 17, 2021Observed: 2.85 ft at 5:00AM Sep 17, 2021Observed: 2.85 ft at 5:15AM Sep 17, 2021Observed: 2.85 ft at 5:30AM Sep 17, 2021Observed: 2.85 ft at 5:45AM Sep 17, 2021Observed: 2.85 ft at 6:00AM Sep 17, 2021Observed: 2.85 ft at 6:15AM Sep 17, 2021Observed: 2.85 ft at 6:30AM Sep 17, 2021Observed: 2.85 ft at 6:45AM Sep 17, 2021Observed: 2.85 ft at 7:00AM Sep 17, 2021Observed: 2.85 ft at 7:15AM Sep 17, 2021Observed: 2.85 ft at 7:30AM Sep 17, 2021Observed: 2.85 ft at 7:45AM Sep 17, 2021Observed: 2.85 ft at 8:00AM Sep 17, 2021Highest Observation: 2.86 ft at 8:15AM Sep 17, 2021Highest Observation: 2.86 ft at 8:30AM Sep 17, 2021Highest Observation: 2.86 ft at 8:45AM Sep 17, 2021Highest Observation: 2.86 ft at 9:00AM Sep 17, 2021Highest Observation: 2.86 ft at 9:15AM Sep 17, 2021Highest Observation: 2.86 ft at 9:30AM Sep 17, 2021Highest Observation: 2.86 ft at 9:45AM Sep 17, 2021Highest Observation: 2.86 ft at 10:00AM Sep 17, 2021Highest Observation: 2.86 ft at 10:15AM Sep 17, 2021Highest Observation: 2.86 ft at 10:30AM Sep 17, 2021Highest Observation: 2.86 ft at 10:45AM Sep 17, 2021Highest Observation: 2.86 ft at 11:00AM Sep 17, 2021Highest Observation: 2.86 ft at 11:15AM Sep 17, 2021Highest Observation: 2.86 ft at 11:30AM Sep 17, 2021Highest Observation: 2.86 ft at 11:45AM Sep 17, 2021Highest Observation: 2.86 ft at 12:00PM Sep 17, 2021Observed: 2.85 ft at 12:15PM Sep 17, 2021Highest Observation: 2.86 ft at 12:30PM Sep 17, 2021Highest Observation: 2.86 ft at 12:45PM Sep 17, 2021Highest Observation: 2.86 ft at 1:00PM Sep 17, 2021Highest Observation: 2.86 ft at 1:15PM Sep 17, 2021Highest Observation: 2.86 ft at 1:30PM Sep 17, 2021Highest Observation: 2.86 ft at 1:45PM Sep 17, 2021Highest Observation: 2.86 ft at 2:00PM Sep 17, 2021Highest Observation: 2.86 ft at 2:15PM Sep 17, 2021Highest Observation: 2.86 ft at 2:30PM Sep 17, 2021Highest Observation: 2.86 ft at 2:45PM Sep 17, 2021Highest Observation: 2.86 ft at 3:00PM Sep 17, 2021Highest Observation: 2.86 ft at 3:15PM Sep 17, 2021Observed: 2.85 ft at 3:30PM Sep 17, 2021Highest Observation: 2.86 ft at 3:45PM Sep 17, 2021Observed: 2.85 ft at 4:00PM Sep 17, 2021Observed: 2.85 ft at 4:15PM Sep 17, 2021Observed: 2.85 ft at 4:30PM Sep 17, 2021Observed: 2.85 ft at 4:45PM Sep 17, 2021Observed: 2.85 ft at 5:00PM Sep 17, 2021Observed: 2.85 ft at 5:15PM Sep 17, 2021Observed: 2.85 ft at 5:30PM Sep 17, 2021Observed: 2.85 ft at 5:45PM Sep 17, 2021Observed: 2.85 ft at 6:00PM Sep 17, 2021Observed: 2.85 ft at 6:15PM Sep 17, 2021Observed: 2.85 ft at 6:30PM Sep 17, 2021Observed: 2.85 ft at 6:45PM Sep 17, 2021Observed: 2.85 ft at 7:00PM Sep 17, 2021Observed: 2.85 ft at 7:15PM Sep 17, 2021Observed: 2.85 ft at 7:30PM Sep 17, 2021Observed: 2.85 ft at 7:45PM Sep 17, 2021Observed: 2.85 ft at 8:00PM Sep 17, 2021Observed: 2.85 ft at 8:15PM Sep 17, 2021Observed: 2.85 ft at 8:30PM Sep 17, 2021Observed: 2.85 ft at 8:45PM Sep 17, 2021Observed: 2.85 ft at 9:00PM Sep 17, 2021Observed: 2.85 ft at 9:15PM Sep 17, 2021Observed: 2.85 ft at 9:30PM Sep 17, 2021Observed: 2.84 ft at 9:45PM Sep 17, 2021Observed: 2.84 ft at 10:00PM Sep 17, 2021Observed: 2.84 ft at 10:15PM Sep 17, 2021Observed: 2.85 ft at 10:30PM Sep 17, 2021Observed: 2.85 ft at 10:45PM Sep 17, 2021Observed: 2.85 ft at 11:00PM Sep 17, 2021Observed: 2.85 ft at 11:15PM Sep 17, 2021Observed: 2.85 ft at 11:30PM Sep 17, 2021Observed: 2.85 ft at 11:45PM Sep 17, 2021Observed: 2.85 ft at 12:00AM Sep 18, 2021Observed: 2.85 ft at 12:15AM Sep 18, 2021Observed: 2.85 ft at 12:30AM Sep 18, 2021Observed: 2.85 ft at 12:45AM Sep 18, 2021Observed: 2.85 ft at 1:00AM Sep 18, 2021Observed: 2.85 ft at 1:15AM Sep 18, 2021Observed: 2.85 ft at 1:30AM Sep 18, 2021Observed: 2.85 ft at 1:45AM Sep 18, 2021Observed: 2.85 ft at 2:00AM Sep 18, 2021Observed: 2.85 ft at 2:15AM Sep 18, 2021Observed: 2.85 ft at 2:30AM Sep 18, 2021Observed: 2.85 ft at 2:45AM Sep 18, 2021Observed: 2.85 ft at 3:00AM Sep 18, 2021Observed: 2.85 ft at 3:15AM Sep 18, 2021Highest Observation: 2.86 ft at 3:30AM Sep 18, 2021Observed: 2.85 ft at 3:45AM Sep 18, 2021Highest Observation: 2.86 ft at 4:00AM Sep 18, 2021Highest Observation: 2.86 ft at 4:15AM Sep 18, 2021Highest Observation: 2.86 ft at 4:30AM Sep 18, 2021Highest Observation: 2.86 ft at 4:45AM Sep 18, 2021Highest Observation: 2.86 ft at 5:00AM Sep 18, 2021Highest Observation: 2.86 ft at 5:15AM Sep 18, 2021Highest Observation: 2.86 ft at 5:30AM Sep 18, 2021Highest Observation: 2.86 ft at 5:45AM Sep 18, 2021Highest Observation: 2.86 ft at 6:00AM Sep 18, 2021Highest Observation: 2.86 ft at 6:15AM Sep 18, 2021Highest Observation: 2.86 ft at 6:30AM Sep 18, 2021Highest Observation: 2.86 ft at 6:45AM Sep 18, 2021Highest Observation: 2.86 ft at 7:00AM Sep 18, 2021Highest Observation: 2.86 ft at 7:15AM Sep 18, 2021Highest Observation: 2.86 ft at 7:30AM Sep 18, 2021Highest Observation: 2.86 ft at 7:45AM Sep 18, 2021Highest Observation: 2.86 ft at 8:00AM Sep 18, 2021Highest Observation: 2.86 ft at 8:15AM Sep 18, 2021Highest Observation: 2.86 ft at 8:30AM Sep 18, 2021Highest Observation: 2.86 ft at 8:45AM Sep 18, 2021Highest Observation: 2.86 ft at 9:00AM Sep 18, 2021Highest Observation: 2.86 ft at 9:15AM Sep 18, 2021Highest Observation: 2.86 ft at 9:30AM Sep 18, 2021Highest Observation: 2.86 ft at 9:45AM Sep 18, 2021Highest Observation: 2.86 ft at 10:00AM Sep 18, 2021Highest Observation: 2.86 ft at 10:15AM Sep 18, 2021Highest Observation: 2.86 ft at 10:30AM Sep 18, 2021Highest Observation: 2.86 ft at 10:45AM Sep 18, 2021Highest Observation: 2.86 ft at 11:00AM Sep 18, 2021Highest Observation: 2.86 ft at 11:15AM Sep 18, 2021Highest Observation: 2.86 ft at 11:30AM Sep 18, 2021Highest Observation: 2.86 ft at 11:45AM Sep 18, 2021Highest Observation: 2.86 ft at 12:00PM Sep 18, 2021Highest Observation: 2.86 ft at 12:15PM Sep 18, 2021Highest Observation: 2.86 ft at 12:30PM Sep 18, 2021Highest Observation: 2.86 ft at 12:45PM Sep 18, 2021Highest Observation: 2.86 ft at 1:00PM Sep 18, 2021Highest Observation: 2.86 ft at 1:15PM Sep 18, 2021Highest Observation: 2.86 ft at 1:30PM Sep 18, 2021Highest Observation: 2.86 ft at 1:45PM Sep 18, 2021Highest Observation: 2.86 ft at 2:00PM Sep 18, 2021Highest Observation: 2.86 ft at 2:15PM Sep 18, 2021Highest Observation: 2.86 ft at 2:30PM Sep 18, 2021Highest Observation: 2.86 ft at 2:45PM Sep 18, 2021Highest Observation: 2.86 ft at 3:00PM Sep 18, 2021Highest Observation: 2.86 ft at 3:15PM Sep 18, 2021Highest Observation: 2.86 ft at 3:30PM Sep 18, 2021Highest Observation: 2.86 ft at 3:45PM Sep 18, 2021Highest Observation: 2.86 ft at 4:00PM Sep 18, 2021Observed: 2.85 ft at 4:15PM Sep 18, 2021Observed: 2.85 ft at 4:30PM Sep 18, 2021Observed: 2.85 ft at 4:45PM Sep 18, 2021Observed: 2.85 ft at 5:00PM Sep 18, 2021Highest Observation: 2.86 ft at 5:15PM Sep 18, 2021Observed: 2.85 ft at 5:30PM Sep 18, 2021Observed: 2.85 ft at 5:45PM Sep 18, 2021Observed: 2.85 ft at 6:00PM Sep 18, 2021Observed: 2.85 ft at 6:15PM Sep 18, 2021Observed: 2.85 ft at 6:30PM Sep 18, 2021Observed: 2.85 ft at 6:45PM Sep 18, 2021Observed: 2.85 ft at 7:00PM Sep 18, 2021Observed: 2.85 ft at 7:15PM Sep 18, 2021Observed: 2.85 ft at 7:30PM Sep 18, 2021Observed: 2.84 ft at 7:45PM Sep 18, 2021Observed: 2.84 ft at 8:00PM Sep 18, 2021Observed: 2.85 ft at 8:15PM Sep 18, 2021Observed: 2.85 ft at 8:30PM Sep 18, 2021Observed: 2.85 ft at 8:45PM Sep 18, 2021Observed: 2.85 ft at 9:00PM Sep 18, 2021Observed: 2.85 ft at 9:15PM Sep 18, 2021Observed: 2.85 ft at 9:30PM Sep 18, 2021Observed: 2.85 ft at 9:45PM Sep 18, 2021Observed: 2.84 ft at 10:00PM Sep 18, 2021Observed: 2.85 ft at 10:15PM Sep 18, 2021Observed: 2.84 ft at 10:30PM Sep 18, 2021Observed: 2.85 ft at 10:45PM Sep 18, 2021Observed: 2.85 ft at 11:00PM Sep 18, 2021Observed: 2.85 ft at 11:15PM Sep 18, 2021Observed: 2.85 ft at 11:30PM Sep 18, 2021Observed: 2.85 ft at 11:45PM Sep 18, 2021Observed: 2.85 ft at 12:00AM Sep 19, 2021Observed: 2.85 ft at 12:15AM Sep 19, 2021Observed: 2.85 ft at 12:30AM Sep 19, 2021Observed: 2.85 ft at 12:45AM Sep 19, 2021Observed: 2.85 ft at 1:00AM Sep 19, 2021Observed: 2.85 ft at 1:15AM Sep 19, 2021Observed: 2.85 ft at 1:30AM Sep 19, 2021Observed: 2.85 ft at 1:45AM Sep 19, 2021Observed: 2.85 ft at 2:00AM Sep 19, 2021Observed: 2.85 ft at 2:15AM Sep 19, 2021Observed: 2.85 ft at 2:30AM Sep 19, 2021Observed: 2.85 ft at 2:45AM Sep 19, 2021Observed: 2.85 ft at 3:00AM Sep 19, 2021Observed: 2.85 ft at 3:15AM Sep 19, 2021Observed: 2.85 ft at 3:30AM Sep 19, 2021Observed: 2.85 ft at 3:45AM Sep 19, 2021Observed: 2.85 ft at 4:00AM Sep 19, 2021Observed: 2.85 ft at 4:15AM Sep 19, 2021Observed: 2.85 ft at 4:30AM Sep 19, 2021Observed: 2.85 ft at 4:45AM Sep 19, 2021Observed: 2.85 ft at 5:00AM Sep 19, 2021Observed: 2.85 ft at 5:15AM Sep 19, 2021Highest Observation: 2.86 ft at 5:30AM Sep 19, 2021Highest Observation: 2.86 ft at 5:45AM Sep 19, 2021Highest Observation: 2.86 ft at 6:00AM Sep 19, 2021Highest Observation: 2.86 ft at 6:15AM Sep 19, 2021Highest Observation: 2.86 ft at 6:30AM Sep 19, 2021Highest Observation: 2.86 ft at 6:45AM Sep 19, 2021Highest Observation: 2.86 ft at 7:00AM Sep 19, 2021Highest Observation: 2.86 ft at 7:15AM Sep 19, 2021Highest Observation: 2.86 ft at 7:30AM Sep 19, 2021Highest Observation: 2.86 ft at 7:45AM Sep 19, 2021Highest Observation: 2.86 ft at 8:00AM Sep 19, 2021Highest Observation: 2.86 ft at 8:15AM Sep 19, 2021Highest Observation: 2.86 ft at 8:30AM Sep 19, 2021Highest Observation: 2.86 ft at 8:45AM Sep 19, 2021Highest Observation: 2.86 ft at 9:00AM Sep 19, 2021Highest Observation: 2.86 ft at 9:15AM Sep 19, 2021Highest Observation: 2.86 ft at 9:30AM Sep 19, 2021Highest Observation: 2.86 ft at 9:45AM Sep 19, 2021Highest Observation: 2.86 ft at 10:00AM Sep 19, 2021Highest Observation: 2.86 ft at 10:15AM Sep 19, 2021Highest Observation: 2.86 ft at 10:30AM Sep 19, 2021Highest Observation: 2.86 ft at 10:45AM Sep 19, 2021Highest Observation: 2.86 ft at 11:00AM Sep 19, 2021Highest Observation: 2.86 ft at 11:15AM Sep 19, 2021Highest Observation: 2.86 ft at 11:30AM Sep 19, 2021Highest Observation: 2.86 ft at 11:45AM Sep 19, 2021Highest Observation: 2.86 ft at 12:00PM Sep 19, 2021Highest Observation: 2.86 ft at 12:15PM Sep 19, 2021Highest Observation: 2.86 ft at 12:30PM Sep 19, 2021Highest Observation: 2.86 ft at 12:45PM Sep 19, 2021Highest Observation: 2.86 ft at 1:00PM Sep 19, 2021Highest Observation: 2.86 ft at 1:15PM Sep 19, 2021Highest Observation: 2.86 ft at 1:30PM Sep 19, 2021Highest Observation: 2.86 ft at 1:45PM Sep 19, 2021Highest Observation: 2.86 ft at 2:00PM Sep 19, 2021Highest Observation: 2.86 ft at 2:15PM Sep 19, 2021Observed: 2.85 ft at 2:30PM Sep 19, 2021Observed: 2.85 ft at 2:45PM Sep 19, 2021Observed: 2.85 ft at 3:00PM Sep 19, 2021Observed: 2.85 ft at 3:15PM Sep 19, 2021Observed: 2.85 ft at 3:30PM Sep 19, 2021Observed: 2.85 ft at 3:45PM Sep 19, 2021Observed: 2.85 ft at 4:00PM Sep 19, 2021Observed: 2.85 ft at 4:15PM Sep 19, 2021Observed: 2.85 ft at 4:30PM Sep 19, 2021Observed: 2.85 ft at 4:45PM Sep 19, 2021Observed: 2.84 ft at 5:00PM Sep 19, 2021Observed: 2.84 ft at 5:15PM Sep 19, 2021Observed: 2.84 ft at 5:30PM Sep 19, 2021Observed: 2.84 ft at 5:45PM Sep 19, 2021Observed: 2.84 ft at 6:00PM Sep 19, 2021Observed: 2.84 ft at 6:15PM Sep 19, 2021Observed: 2.84 ft at 6:30PM Sep 19, 2021Observed: 2.84 ft at 6:45PM Sep 19, 2021Observed: 2.84 ft at 7:00PM Sep 19, 2021Observed: 2.83 ft at 7:15PM Sep 19, 2021Observed: 2.83 ft at 7:30PM Sep 19, 2021Observed: 2.83 ft at 7:45PM Sep 19, 2021Observed: 2.83 ft at 8:00PM Sep 19, 2021Observed: 2.83 ft at 8:15PM Sep 19, 2021Observed: 2.83 ft at 8:30PM Sep 19, 2021Observed: 2.83 ft at 8:45PM Sep 19, 2021Observed: 2.83 ft at 9:00PM Sep 19, 2021Observed: 2.83 ft at 9:15PM Sep 19, 2021Observed: 2.83 ft at 9:30PM Sep 19, 2021Observed: 2.83 ft at 9:45PM Sep 19, 2021Observed: 2.83 ft at 10:00PM Sep 19, 2021Observed: 2.83 ft at 10:15PM Sep 19, 2021Observed: 2.83 ft at 10:30PM Sep 19, 2021Observed: 2.83 ft at 10:45PM Sep 19, 2021Observed: 2.83 ft at 11:00PM Sep 19, 2021Observed: 2.83 ft at 11:15PM Sep 19, 2021Observed: 2.83 ft at 11:30PM Sep 19, 2021Observed: 2.83 ft at 11:45PM Sep 19, 2021Observed: 2.83 ft at 12:00AM Sep 20, 2021Observed: 2.83 ft at 12:15AM Sep 20, 2021Observed: 2.83 ft at 12:30AM Sep 20, 2021Observed: 2.83 ft at 12:45AM Sep 20, 2021Observed: 2.83 ft at 1:00AM Sep 20, 2021Observed: 2.83 ft at 1:15AM Sep 20, 2021Observed: 2.83 ft at 1:30AM Sep 20, 2021Observed: 2.83 ft at 1:45AM Sep 20, 2021Observed: 2.83 ft at 2:00AM Sep 20, 2021Observed: 2.83 ft at 2:15AM Sep 20, 2021Observed: 2.83 ft at 2:30AM Sep 20, 2021Observed: 2.83 ft at 2:45AM Sep 20, 2021Observed: 2.83 ft at 3:00AM Sep 20, 2021Observed: 2.83 ft at 3:15AM Sep 20, 2021Observed: 2.84 ft at 3:30AM Sep 20, 2021Observed: 2.84 ft at 3:45AM Sep 20, 2021Observed: 2.84 ft at 4:00AM Sep 20, 2021Observed: 2.84 ft at 4:15AM Sep 20, 2021Observed: 2.84 ft at 4:30AM Sep 20, 2021Observed: 2.84 ft at 4:45AM Sep 20, 2021Observed: 2.84 ft at 5:00AM Sep 20, 2021Observed: 2.84 ft at 5:15AM Sep 20, 2021Observed: 2.84 ft at 5:30AM Sep 20, 2021Observed: 2.84 ft at 5:45AM Sep 20, 2021Observed: 2.84 ft at 6:00AM Sep 20, 2021Observed: 2.84 ft at 6:15AM Sep 20, 2021Observed: 2.84 ft at 6:30AM Sep 20, 2021Observed: 2.84 ft at 6:45AM Sep 20, 2021Observed: 2.84 ft at 7:00AM Sep 20, 2021Observed: 2.84 ft at 7:15AM Sep 20, 2021Observed: 2.84 ft at 7:30AM Sep 20, 2021Observed: 2.84 ft at 7:45AM Sep 20, 2021Observed: 2.85 ft at 8:00AM Sep 20, 2021Observed: 2.85 ft at 8:15AM Sep 20, 2021Observed: 2.85 ft at 8:30AM Sep 20, 2021Observed: 2.85 ft at 8:45AM Sep 20, 2021Observed: 2.85 ft at 9:00AM Sep 20, 2021Observed: 2.85 ft at 9:15AM Sep 20, 2021Observed: 2.85 ft at 9:30AM Sep 20, 2021Observed: 2.85 ft at 9:45AM Sep 20, 2021Observed: 2.85 ft at 10:00AM Sep 20, 2021Observed: 2.85 ft at 10:15AM Sep 20, 2021Observed: 2.85 ft at 10:30AM Sep 20, 2021Observed: 2.85 ft at 10:45AM Sep 20, 2021Highest Observation: 2.86 ft at 11:00AM Sep 20, 2021Observed: 2.85 ft at 11:15AM Sep 20, 2021Observed: 2.85 ft at 11:30AM Sep 20, 2021Highest Observation: 2.86 ft at 11:45AM Sep 20, 2021Observed: 2.85 ft at 12:00PM Sep 20, 2021Observed: 2.85 ft at 12:15PM Sep 20, 2021Observed: 2.85 ft at 12:30PM Sep 20, 2021Observed: 2.85 ft at 12:45PM Sep 20, 2021Observed: 2.85 ft at 1:00PM Sep 20, 2021Observed: 2.85 ft at 1:15PM Sep 20, 2021Observed: 2.85 ft at 1:30PM Sep 20, 2021Observed: 2.85 ft at 1:45PM Sep 20, 2021Observed: 2.85 ft at 2:00PM Sep 20, 2021Observed: 2.85 ft at 2:15PM Sep 20, 2021Observed: 2.84 ft at 2:30PM Sep 20, 2021Observed: 2.83 ft at 2:45PM Sep 20, 2021Observed: 2.82 ft at 3:00PM Sep 20, 2021Observed: 2.85 ft at 3:15PM Sep 20, 2021Observed: 2.85 ft at 3:30PM Sep 20, 2021Observed: 2.84 ft at 3:45PM Sep 20, 2021Observed: 2.84 ft at 4:00PM Sep 20, 2021Observed: 2.85 ft at 4:15PM Sep 20, 2021Observed: 2.84 ft at 4:30PM Sep 20, 2021Observed: 2.84 ft at 4:45PM Sep 20, 2021Observed: 2.84 ft at 5:00PM Sep 20, 2021Observed: 2.84 ft at 5:15PM Sep 20, 2021Observed: 2.84 ft at 5:30PM Sep 20, 2021Observed: 2.84 ft at 5:45PM Sep 20, 2021Observed: 2.84 ft at 6:00PM Sep 20, 2021Observed: 2.84 ft at 6:15PM Sep 20, 2021Observed: 2.84 ft at 6:30PM Sep 20, 2021Observed: 2.84 ft at 6:45PM Sep 20, 2021Observed: 2.83 ft at 7:00PM Sep 20, 2021Observed: 2.83 ft at 7:15PM Sep 20, 2021Observed: 2.83 ft at 7:30PM Sep 20, 2021Observed: 2.83 ft at 7:45PM Sep 20, 2021Observed: 2.83 ft at 8:00PM Sep 20, 2021Observed: 2.83 ft at 8:15PM Sep 20, 2021Observed: 2.83 ft at 8:30PM Sep 20, 2021Observed: 2.83 ft at 8:45PM Sep 20, 2021Observed: 2.83 ft at 9:00PM Sep 20, 2021Observed: 2.83 ft at 9:15PM Sep 20, 2021Observed: 2.83 ft at 9:30PM Sep 20, 2021Observed: 2.83 ft at 9:45PM Sep 20, 2021Observed: 2.83 ft at 10:00PM Sep 20, 2021Observed: 2.83 ft at 10:15PM Sep 20, 2021Observed: 2.83 ft at 10:30PM Sep 20, 2021Observed: 2.83 ft at 10:45PM Sep 20, 2021Observed: 2.83 ft at 11:00PM Sep 20, 2021Observed: 2.83 ft at 11:15PM Sep 20, 2021Observed: 2.83 ft at 11:30PM Sep 20, 2021Highest Forecast: 2.8 ft 1:00AM Sep 21, 2021Highest Forecast: 2.8 ft 2:00AM Sep 21, 2021Highest Forecast: 2.8 ft 3:00AM Sep 21, 2021Highest Forecast: 2.8 ft 4:00AM Sep 21, 2021Highest Forecast: 2.8 ft 5:00AM Sep 21, 2021Highest Forecast: 2.8 ft 6:00AM Sep 21, 2021Highest Forecast: 2.8 ft 7:00AM Sep 21, 2021Highest Forecast: 2.8 ft 8:00AM Sep 21, 2021Highest Forecast: 2.8 ft 9:00AM Sep 21, 2021Highest Forecast: 2.8 ft 10:00AM Sep 21, 2021Highest Forecast: 2.8 ft 11:00AM Sep 21, 2021Highest Forecast: 2.8 ft 12:00PM Sep 21, 2021Highest Forecast: 2.8 ft 1:00PM Sep 21, 2021Highest Forecast: 2.8 ft 2:00PM Sep 21, 2021Highest Forecast: 2.8 ft 3:00PM Sep 21, 2021Highest Forecast: 2.8 ft 4:00PM Sep 21, 2021Highest Forecast: 2.8 ft 5:00PM Sep 21, 2021Highest Forecast: 2.8 ft 6:00PM Sep 21, 2021Highest Forecast: 2.8 ft 7:00PM Sep 21, 2021Highest Forecast: 2.8 ft 8:00PM Sep 21, 2021Highest Forecast: 2.8 ft 9:00PM Sep 21, 2021Highest Forecast: 2.8 ft 10:00PM Sep 21, 2021Highest Forecast: 2.8 ft 11:00PM Sep 21, 2021Highest Forecast: 2.8 ft 12:00AM Sep 22, 2021Highest Forecast: 2.8 ft 1:00AM Sep 22, 2021Highest Forecast: 2.8 ft 2:00AM Sep 22, 2021Highest Forecast: 2.8 ft 3:00AM Sep 22, 2021Highest Forecast: 2.8 ft 4:00AM Sep 22, 2021Highest Forecast: 2.8 ft 5:00AM Sep 22, 2021Highest Forecast: 2.8 ft 6:00AM Sep 22, 2021Highest Forecast: 2.8 ft 7:00AM Sep 22, 2021Highest Forecast: 2.8 ft 8:00AM Sep 22, 2021Highest Forecast: 2.8 ft 9:00AM Sep 22, 2021Highest Forecast: 2.8 ft 10:00AM Sep 22, 2021Highest Forecast: 2.8 ft 11:00AM Sep 22, 2021Highest Forecast: 2.8 ft 12:00PM Sep 22, 2021Highest Forecast: 2.8 ft 1:00PM Sep 22, 2021Highest Forecast: 2.8 ft 2:00PM Sep 22, 2021Highest Forecast: 2.8 ft 3:00PM Sep 22, 2021Highest Forecast: 2.8 ft 4:00PM Sep 22, 2021Highest Forecast: 2.8 ft 5:00PM Sep 22, 2021Highest Forecast: 2.8 ft 6:00PM Sep 22, 2021Highest Forecast: 2.8 ft 7:00PM Sep 22, 2021Highest Forecast: 2.8 ft 8:00PM Sep 22, 2021Highest Forecast: 2.8 ft 9:00PM Sep 22, 2021Highest Forecast: 2.8 ft 10:00PM Sep 22, 2021Highest Forecast: 2.8 ft 11:00PM Sep 22, 2021Highest Forecast: 2.8 ft 12:00AM Sep 23, 2021Highest Forecast: 2.8 ft 1:00AM Sep 23, 2021Highest Forecast: 2.8 ft 2:00AM Sep 23, 2021Highest Forecast: 2.8 ft 3:00AM Sep 23, 2021Highest Forecast: 2.8 ft 4:00AM Sep 23, 2021Highest Forecast: 2.8 ft 5:00AM Sep 23, 2021Highest Forecast: 2.8 ft 6:00AM Sep 23, 2021Highest Forecast: 2.8 ft 7:00AM Sep 23, 2021Highest Forecast: 2.8 ft 8:00AM Sep 23, 2021Highest Forecast: 2.8 ft 9:00AM Sep 23, 2021Highest Forecast: 2.8 ft 10:00AM Sep 23, 2021Highest Forecast: 2.8 ft 11:00AM Sep 23, 2021Highest Forecast: 2.8 ft 12:00PM Sep 23, 2021Highest Forecast: 2.8 ft 1:00PM Sep 23, 2021Highest Forecast: 2.8 ft 2:00PM Sep 23, 2021Highest Forecast: 2.8 ft 3:00PM Sep 23, 2021Highest Forecast: 2.8 ft 4:00PM Sep 23, 2021Highest Forecast: 2.8 ft 5:00PM Sep 23, 2021Highest Forecast: 2.8 ft 6:00PM Sep 23, 2021Highest Forecast: 2.8 ft 7:00PM Sep 23, 2021Highest Forecast: 2.8 ft 8:00PM Sep 23, 2021Highest Forecast: 2.8 ft 9:00PM Sep 23, 2021Highest Forecast: 2.8 ft 10:00PM Sep 23, 2021Highest Forecast: 2.8 ft 11:00PM Sep 23, 2021Highest Forecast: 2.8 ft 12:00AM Sep 24, 2021Highest Forecast: 2.8 ft 1:00AM Sep 24, 2021Highest Forecast: 2.8 ft 2:00AM Sep 24, 2021Highest Forecast: 2.8 ft 3:00AM Sep 24, 2021Highest Forecast: 2.8 ft 4:00AM Sep 24, 2021Highest Forecast: 2.8 ft 5:00AM Sep 24, 2021Highest Forecast: 2.8 ft 6:00AM Sep 24, 2021Highest Forecast: 2.8 ft 7:00AM Sep 24, 2021Highest Forecast: 2.8 ft 8:00AM Sep 24, 2021Highest Forecast: 2.8 ft 9:00AM Sep 24, 2021Highest Forecast: 2.8 ft 10:00AM Sep 24, 2021Highest Forecast: 2.8 ft 11:00AM Sep 24, 2021Highest Forecast: 2.8 ft 12:00PM Sep 24, 2021Highest Forecast: 2.8 ft 1:00PM Sep 24, 2021Highest Forecast: 2.8 ft 2:00PM Sep 24, 2021Highest Forecast: 2.8 ft 3:00PM Sep 24, 2021Highest Forecast: 2.8 ft 4:00PM Sep 24, 2021Highest Forecast: 2.8 ft 5:00PM Sep 24, 2021Highest Forecast: 2.8 ft 6:00PM Sep 24, 2021Highest Forecast: 2.8 ft 7:00PM Sep 24, 2021Highest Forecast: 2.8 ft 8:00PM Sep 24, 2021Highest Forecast: 2.8 ft 9:00PM Sep 24, 2021Highest Forecast: 2.8 ft 10:00PM Sep 24, 2021Highest Forecast: 2.8 ft 11:00PM Sep 24, 2021Highest Forecast: 2.8 ft 12:00AM Sep 25, 2021Highest Forecast: 2.8 ft 1:00AM Sep 25, 2021Highest Forecast: 2.8 ft 2:00AM Sep 25, 2021Highest Forecast: 2.8 ft 3:00AM Sep 25, 2021Highest Forecast: 2.8 ft 4:00AM Sep 25, 2021Highest Forecast: 2.8 ft 5:00AM Sep 25, 2021USGS--Water Resources of the United StatesBTEC1(plotting HGIRG) Graph Created (12:15AM Sep 21, 2021)ObservedForecast (issued 7:32AM Sep 20)Latest observed value: 2.83 ft at 11:30 PM PDT 20-Sep-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
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Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
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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
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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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