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Hydrograph River at a Glance Download
San Lorenzo Creek (Alameda) above Hayward Stage (ft)Flow (kcfs)Highest Observation: 2.14 ft at 2:00AM May 08, 2021Highest Observation: 2.14 ft at 2:15AM May 08, 2021Highest Observation: 2.14 ft at 2:30AM May 08, 2021Observed: 2.13 ft at 2:45AM May 08, 2021Highest Observation: 2.14 ft at 3:00AM May 08, 2021Observed: 2.13 ft at 3:15AM May 08, 2021Observed: 2.13 ft at 3:30AM May 08, 2021Observed: 2.13 ft at 3:45AM May 08, 2021Observed: 2.13 ft at 4:00AM May 08, 2021Observed: 2.13 ft at 4:15AM May 08, 2021Highest Observation: 2.14 ft at 4:30AM May 08, 2021Observed: 2.13 ft at 4:45AM May 08, 2021Observed: 2.13 ft at 5:00AM May 08, 2021Highest Observation: 2.14 ft at 5:15AM May 08, 2021Highest Observation: 2.14 ft at 5:30AM May 08, 2021Observed: 2.13 ft at 5:45AM May 08, 2021Highest Observation: 2.14 ft at 6:00AM May 08, 2021Highest Observation: 2.14 ft at 6:15AM May 08, 2021Observed: 2.13 ft at 6:30AM May 08, 2021Highest Observation: 2.14 ft at 6:45AM May 08, 2021Highest Observation: 2.14 ft at 7:00AM May 08, 2021Highest Observation: 2.14 ft at 7:15AM May 08, 2021Highest Observation: 2.14 ft at 7:30AM May 08, 2021Highest Observation: 2.14 ft at 7:45AM May 08, 2021Highest Observation: 2.14 ft at 8:00AM May 08, 2021Highest Observation: 2.14 ft at 8:15AM May 08, 2021Observed: 2.13 ft at 8:30AM May 08, 2021Highest Observation: 2.14 ft at 8:45AM May 08, 2021Observed: 2.13 ft at 9:00AM May 08, 2021Observed: 2.13 ft at 9:15AM May 08, 2021Highest Observation: 2.14 ft at 9:30AM May 08, 2021Highest Observation: 2.14 ft at 9:45AM May 08, 2021Highest Observation: 2.14 ft at 10:00AM May 08, 2021Observed: 2.13 ft at 10:15AM May 08, 2021Highest Observation: 2.14 ft at 10:30AM May 08, 2021Observed: 2.13 ft at 10:45AM May 08, 2021Highest Observation: 2.14 ft at 11:00AM May 08, 2021Highest Observation: 2.14 ft at 11:15AM May 08, 2021Highest Observation: 2.14 ft at 11:30AM May 08, 2021Highest Observation: 2.14 ft at 11:45AM May 08, 2021Highest Observation: 2.14 ft at 12:00PM May 08, 2021Highest Observation: 2.14 ft at 12:15PM May 08, 2021Highest Observation: 2.14 ft at 12:30PM May 08, 2021Highest Observation: 2.14 ft at 12:45PM May 08, 2021Highest Observation: 2.14 ft at 1:00PM May 08, 2021Highest Observation: 2.14 ft at 1:15PM May 08, 2021Highest Observation: 2.14 ft at 1:30PM May 08, 2021Highest Observation: 2.14 ft at 1:45PM May 08, 2021Highest Observation: 2.14 ft at 2:00PM May 08, 2021Highest Observation: 2.14 ft at 2:15PM May 08, 2021Observed: 2.13 ft at 2:30PM May 08, 2021Highest Observation: 2.14 ft at 2:45PM May 08, 2021Observed: 2.13 ft at 3:00PM May 08, 2021Observed: 2.13 ft at 3:15PM May 08, 2021Observed: 2.13 ft at 3:30PM May 08, 2021Observed: 2.13 ft at 3:45PM May 08, 2021Observed: 2.13 ft at 4:00PM May 08, 2021Observed: 2.13 ft at 4:15PM May 08, 2021Observed: 2.13 ft at 4:30PM May 08, 2021Observed: 2.13 ft at 4:45PM May 08, 2021Observed: 2.13 ft at 5:00PM May 08, 2021Observed: 2.13 ft at 5:15PM May 08, 2021Observed: 2.13 ft at 5:30PM May 08, 2021Observed: 2.13 ft at 5:45PM May 08, 2021Observed: 2.13 ft at 6:00PM May 08, 2021Observed: 2.13 ft at 6:15PM May 08, 2021Observed: 2.13 ft at 6:30PM May 08, 2021Observed: 2.13 ft at 6:45PM May 08, 2021Observed: 2.13 ft at 7:00PM May 08, 2021Observed: 2.13 ft at 7:15PM May 08, 2021Observed: 2.13 ft at 7:30PM May 08, 2021Observed: 2.13 ft at 7:45PM May 08, 2021Observed: 2.13 ft at 8:00PM May 08, 2021Observed: 2.13 ft at 8:15PM May 08, 2021Observed: 2.13 ft at 8:30PM May 08, 2021Observed: 2.13 ft at 8:45PM May 08, 2021Observed: 2.13 ft at 9:00PM May 08, 2021Observed: 2.13 ft at 9:15PM May 08, 2021Observed: 2.13 ft at 9:30PM May 08, 2021Observed: 2.13 ft at 9:45PM May 08, 2021Observed: 2.13 ft at 10:00PM May 08, 2021Observed: 2.13 ft at 10:15PM May 08, 2021Observed: 2.13 ft at 10:30PM May 08, 2021Highest Observation: 2.14 ft at 10:45PM May 08, 2021Observed: 2.13 ft at 11:00PM May 08, 2021Observed: 2.13 ft at 11:15PM May 08, 2021Observed: 2.13 ft at 11:30PM May 08, 2021Observed: 2.13 ft at 11:45PM May 08, 2021Observed: 2.13 ft at 12:00AM May 09, 2021Observed: 2.13 ft at 12:15AM May 09, 2021Observed: 2.13 ft at 12:30AM May 09, 2021Observed: 2.13 ft at 12:45AM May 09, 2021Observed: 2.13 ft at 1:00AM May 09, 2021Observed: 2.13 ft at 1:15AM May 09, 2021Observed: 2.13 ft at 1:30AM May 09, 2021Observed: 2.13 ft at 1:45AM May 09, 2021Observed: 2.13 ft at 2:00AM May 09, 2021Observed: 2.13 ft at 2:15AM May 09, 2021Observed: 2.13 ft at 2:30AM May 09, 2021Observed: 2.13 ft at 2:45AM May 09, 2021Observed: 2.13 ft at 3:00AM May 09, 2021Observed: 2.13 ft at 3:15AM May 09, 2021Observed: 2.13 ft at 3:30AM May 09, 2021Observed: 2.13 ft at 3:45AM May 09, 2021Observed: 2.13 ft at 4:00AM May 09, 2021Observed: 2.13 ft at 4:15AM May 09, 2021Observed: 2.13 ft at 4:30AM May 09, 2021Observed: 2.13 ft at 4:45AM May 09, 2021Observed: 2.13 ft at 5:00AM May 09, 2021Observed: 2.13 ft at 5:15AM May 09, 2021Observed: 2.13 ft at 5:30AM May 09, 2021Observed: 2.13 ft at 5:45AM May 09, 2021Observed: 2.13 ft at 6:00AM May 09, 2021Observed: 2.13 ft at 6:15AM May 09, 2021Observed: 2.13 ft at 6:30AM May 09, 2021Observed: 2.13 ft at 6:45AM May 09, 2021Observed: 2.13 ft at 7:00AM May 09, 2021Observed: 2.13 ft at 7:15AM May 09, 2021Observed: 2.13 ft at 7:30AM May 09, 2021Observed: 2.13 ft at 7:45AM May 09, 2021Observed: 2.13 ft at 8:00AM May 09, 2021Observed: 2.13 ft at 8:15AM May 09, 2021Observed: 2.13 ft at 8:30AM May 09, 2021Observed: 2.13 ft at 8:45AM May 09, 2021Observed: 2.13 ft at 9:00AM May 09, 2021Observed: 2.13 ft at 9:15AM May 09, 2021Observed: 2.13 ft at 9:30AM May 09, 2021Observed: 2.13 ft at 9:45AM May 09, 2021Observed: 2.13 ft at 10:00AM May 09, 2021Observed: 2.13 ft at 10:15AM May 09, 2021Observed: 2.13 ft at 10:30AM May 09, 2021Observed: 2.13 ft at 10:45AM May 09, 2021Observed: 2.13 ft at 11:00AM May 09, 2021Observed: 2.13 ft at 11:15AM May 09, 2021Observed: 2.13 ft at 11:30AM May 09, 2021Observed: 2.13 ft at 11:45AM May 09, 2021Observed: 2.13 ft at 12:00PM May 09, 2021Observed: 2.13 ft at 12:15PM May 09, 2021Observed: 2.13 ft at 12:30PM May 09, 2021Observed: 2.13 ft at 12:45PM May 09, 2021Observed: 2.13 ft at 1:00PM May 09, 2021Observed: 2.13 ft at 1:15PM May 09, 2021Observed: 2.13 ft at 1:30PM May 09, 2021Observed: 2.13 ft at 1:45PM May 09, 2021Observed: 2.13 ft at 2:00PM May 09, 2021Observed: 2.13 ft at 2:15PM May 09, 2021Observed: 2.13 ft at 2:30PM May 09, 2021Observed: 2.13 ft at 2:45PM May 09, 2021Observed: 2.13 ft at 3:00PM May 09, 2021Observed: 2.13 ft at 3:15PM May 09, 2021Observed: 2.13 ft at 3:30PM May 09, 2021Observed: 2.13 ft at 3:45PM May 09, 2021Observed: 2.13 ft at 4:00PM May 09, 2021Observed: 2.13 ft at 4:15PM May 09, 2021Observed: 2.13 ft at 4:30PM May 09, 2021Observed: 2.13 ft at 4:45PM May 09, 2021Observed: 2.13 ft at 5:00PM May 09, 2021Observed: 2.13 ft at 5:15PM May 09, 2021Observed: 2.13 ft at 5:30PM May 09, 2021Observed: 2.13 ft at 5:45PM May 09, 2021Observed: 2.13 ft at 6:00PM May 09, 2021Observed: 2.13 ft at 6:15PM May 09, 2021Observed: 2.13 ft at 6:30PM May 09, 2021Observed: 2.13 ft at 6:45PM May 09, 2021Observed: 2.13 ft at 7:00PM May 09, 2021Observed: 2.13 ft at 7:15PM May 09, 2021Observed: 2.13 ft at 7:30PM May 09, 2021Observed: 2.13 ft at 7:45PM May 09, 2021Observed: 2.13 ft at 8:00PM May 09, 2021Observed: 2.13 ft at 8:15PM May 09, 2021Observed: 2.13 ft at 8:30PM May 09, 2021Observed: 2.13 ft at 8:45PM May 09, 2021Observed: 2.13 ft at 9:00PM May 09, 2021Observed: 2.13 ft at 9:15PM May 09, 2021Observed: 2.13 ft at 9:30PM May 09, 2021Observed: 2.13 ft at 9:45PM May 09, 2021Observed: 2.13 ft at 10:00PM May 09, 2021Observed: 2.13 ft at 10:15PM May 09, 2021Observed: 2.13 ft at 10:30PM May 09, 2021Observed: 2.13 ft at 10:45PM May 09, 2021Observed: 2.13 ft at 11:00PM May 09, 2021Observed: 2.13 ft at 11:15PM May 09, 2021Observed: 2.13 ft at 11:30PM May 09, 2021Observed: 2.13 ft at 11:45PM May 09, 2021Observed: 2.13 ft at 12:00AM May 10, 2021Observed: 2.13 ft at 12:15AM May 10, 2021Observed: 2.13 ft at 12:30AM May 10, 2021Observed: 2.13 ft at 12:45AM May 10, 2021Observed: 2.13 ft at 1:00AM May 10, 2021Observed: 2.13 ft at 1:15AM May 10, 2021Observed: 2.13 ft at 1:30AM May 10, 2021Observed: 2.13 ft at 1:45AM May 10, 2021Observed: 2.13 ft at 2:00AM May 10, 2021Observed: 2.13 ft at 2:15AM May 10, 2021Observed: 2.13 ft at 2:30AM May 10, 2021Observed: 2.13 ft at 2:45AM May 10, 2021Observed: 2.13 ft at 3:00AM May 10, 2021Observed: 2.13 ft at 3:15AM May 10, 2021Observed: 2.13 ft at 3:30AM May 10, 2021Observed: 2.13 ft at 3:45AM May 10, 2021Observed: 2.13 ft at 4:00AM May 10, 2021Observed: 2.13 ft at 4:15AM May 10, 2021Observed: 2.13 ft at 4:30AM May 10, 2021Observed: 2.13 ft at 4:45AM May 10, 2021Observed: 2.13 ft at 5:00AM May 10, 2021Observed: 2.13 ft at 5:15AM May 10, 2021Observed: 2.13 ft at 5:30AM May 10, 2021Observed: 2.13 ft at 5:45AM May 10, 2021Observed: 2.13 ft at 6:00AM May 10, 2021Observed: 2.13 ft at 6:15AM May 10, 2021Observed: 2.13 ft at 6:30AM May 10, 2021Observed: 2.13 ft at 6:45AM May 10, 2021Observed: 2.13 ft at 7:00AM May 10, 2021Observed: 2.13 ft at 7:15AM May 10, 2021Observed: 2.13 ft at 7:30AM May 10, 2021Observed: 2.13 ft at 7:45AM May 10, 2021Observed: 2.13 ft at 8:00AM May 10, 2021Observed: 2.13 ft at 8:15AM May 10, 2021Observed: 2.13 ft at 8:30AM May 10, 2021Observed: 2.13 ft at 8:45AM May 10, 2021Observed: 2.13 ft at 9:00AM May 10, 2021Observed: 2.13 ft at 9:15AM May 10, 2021Observed: 2.13 ft at 9:30AM May 10, 2021Observed: 2.13 ft at 9:45AM May 10, 2021Observed: 2.13 ft at 10:00AM May 10, 2021Observed: 2.13 ft at 10:15AM May 10, 2021Observed: 2.13 ft at 10:30AM May 10, 2021Observed: 2.13 ft at 10:45AM May 10, 2021Observed: 2.13 ft at 11:00AM May 10, 2021Observed: 2.13 ft at 11:15AM May 10, 2021Observed: 2.13 ft at 11:30AM May 10, 2021Observed: 2.13 ft at 11:45AM May 10, 2021Observed: 2.13 ft at 12:00PM May 10, 2021Observed: 2.13 ft at 12:15PM May 10, 2021Observed: 2.13 ft at 12:30PM May 10, 2021Observed: 2.13 ft at 12:45PM May 10, 2021Observed: 2.13 ft at 1:00PM May 10, 2021Observed: 2.13 ft at 1:15PM May 10, 2021Observed: 2.13 ft at 1:30PM May 10, 2021Observed: 2.13 ft at 1:45PM May 10, 2021Observed: 2.13 ft at 2:00PM May 10, 2021Observed: 2.13 ft at 2:15PM May 10, 2021Observed: 2.13 ft at 2:30PM May 10, 2021Observed: 2.13 ft at 2:45PM May 10, 2021Observed: 2.13 ft at 3:00PM May 10, 2021Observed: 2.13 ft at 3:15PM May 10, 2021Observed: 2.13 ft at 3:30PM May 10, 2021Observed: 2.13 ft at 3:45PM May 10, 2021Observed: 2.13 ft at 4:00PM May 10, 2021Observed: 2.13 ft at 4:15PM May 10, 2021Observed: 2.13 ft at 4:30PM May 10, 2021Observed: 2.13 ft at 4:45PM May 10, 2021Observed: 2.13 ft at 5:00PM May 10, 2021Observed: 2.13 ft at 5:15PM May 10, 2021Observed: 2.13 ft at 5:30PM May 10, 2021Observed: 2.13 ft at 5:45PM May 10, 2021Observed: 2.13 ft at 6:00PM May 10, 2021Observed: 2.13 ft at 6:15PM May 10, 2021Observed: 2.13 ft at 6:30PM May 10, 2021Observed: 2.13 ft at 6:45PM May 10, 2021Observed: 2.13 ft at 7:00PM May 10, 2021Observed: 2.13 ft at 7:15PM May 10, 2021Observed: 2.13 ft at 7:30PM May 10, 2021Observed: 2.13 ft at 7:45PM May 10, 2021Observed: 2.13 ft at 8:00PM May 10, 2021Observed: 2.13 ft at 8:15PM May 10, 2021Observed: 2.13 ft at 8:30PM May 10, 2021Observed: 2.13 ft at 8:45PM May 10, 2021Observed: 2.13 ft at 9:00PM May 10, 2021Observed: 2.13 ft at 9:15PM May 10, 2021Highest Observation: 2.14 ft at 9:30PM May 10, 2021Highest Observation: 2.14 ft at 9:45PM May 10, 2021Observed: 2.13 ft at 10:00PM May 10, 2021Highest Observation: 2.14 ft at 10:15PM May 10, 2021Highest Observation: 2.14 ft at 10:30PM May 10, 2021Highest Observation: 2.14 ft at 10:45PM May 10, 2021Highest Observation: 2.14 ft at 11:00PM May 10, 2021Highest Observation: 2.14 ft at 11:15PM May 10, 2021Highest Observation: 2.14 ft at 11:30PM May 10, 2021Highest Observation: 2.14 ft at 11:45PM May 10, 2021Highest Observation: 2.14 ft at 12:00AM May 11, 2021Highest Observation: 2.14 ft at 12:15AM May 11, 2021Highest Observation: 2.14 ft at 12:30AM May 11, 2021Highest Observation: 2.14 ft at 12:45AM May 11, 2021Highest Observation: 2.14 ft at 1:00AM May 11, 2021Observed: 2.13 ft at 1:15AM May 11, 2021Observed: 2.13 ft at 1:30AM May 11, 2021Observed: 2.13 ft at 1:45AM May 11, 2021Highest Observation: 2.14 ft at 2:00AM May 11, 2021Highest Observation: 2.14 ft at 2:15AM May 11, 2021Observed: 2.13 ft at 2:30AM May 11, 2021Observed: 2.13 ft at 2:45AM May 11, 2021Observed: 2.13 ft at 3:00AM May 11, 2021Observed: 2.13 ft at 3:15AM May 11, 2021Observed: 2.13 ft at 3:30AM May 11, 2021Observed: 2.13 ft at 3:45AM May 11, 2021Highest Observation: 2.14 ft at 4:00AM May 11, 2021Observed: 2.13 ft at 4:15AM May 11, 2021Observed: 2.13 ft at 4:30AM May 11, 2021Observed: 2.13 ft at 4:45AM May 11, 2021Observed: 2.13 ft at 5:00AM May 11, 2021Observed: 2.13 ft at 5:15AM May 11, 2021Highest Observation: 2.14 ft at 5:30AM May 11, 2021Observed: 2.13 ft at 5:45AM May 11, 2021Observed: 2.13 ft at 6:00AM May 11, 2021Observed: 2.13 ft at 6:15AM May 11, 2021Observed: 2.13 ft at 6:30AM May 11, 2021Observed: 2.13 ft at 6:45AM May 11, 2021Observed: 2.13 ft at 7:00AM May 11, 2021Observed: 2.13 ft at 7:15AM May 11, 2021Observed: 2.13 ft at 7:30AM May 11, 2021Observed: 2.13 ft at 7:45AM May 11, 2021Observed: 2.13 ft at 8:00AM May 11, 2021Observed: 2.13 ft at 8:15AM May 11, 2021Observed: 2.13 ft at 8:30AM May 11, 2021Observed: 2.13 ft at 8:45AM May 11, 2021Observed: 2.13 ft at 9:00AM May 11, 2021Observed: 2.13 ft at 9:15AM May 11, 2021Observed: 2.13 ft at 9:30AM May 11, 2021Observed: 2.13 ft at 9:45AM May 11, 2021Observed: 2.13 ft at 10:00AM May 11, 2021Observed: 2.13 ft at 10:15AM May 11, 2021Observed: 2.13 ft at 10:30AM May 11, 2021Observed: 2.13 ft at 10:45AM May 11, 2021Highest Observation: 2.14 ft at 11:00AM May 11, 2021Highest Observation: 2.14 ft at 11:15AM May 11, 2021Highest Observation: 2.14 ft at 11:30AM May 11, 2021Highest Observation: 2.14 ft at 11:45AM May 11, 2021Highest Observation: 2.14 ft at 12:00PM May 11, 2021Observed: 2.13 ft at 12:15PM May 11, 2021Highest Observation: 2.14 ft at 12:30PM May 11, 2021Observed: 2.13 ft at 12:45PM May 11, 2021Observed: 2.13 ft at 1:00PM May 11, 2021Highest Observation: 2.14 ft at 1:15PM May 11, 2021Highest Observation: 2.14 ft at 1:30PM May 11, 2021Observed: 2.13 ft at 1:45PM May 11, 2021Observed: 2.13 ft at 2:00PM May 11, 2021Observed: 2.13 ft at 2:15PM May 11, 2021Observed: 2.13 ft at 2:30PM May 11, 2021Observed: 2.13 ft at 2:45PM May 11, 2021Observed: 2.13 ft at 3:00PM May 11, 2021Observed: 2.13 ft at 3:15PM May 11, 2021Observed: 2.13 ft at 3:30PM May 11, 2021Observed: 2.13 ft at 3:45PM May 11, 2021Observed: 2.13 ft at 4:00PM May 11, 2021Observed: 2.13 ft at 4:15PM May 11, 2021Observed: 2.13 ft at 4:30PM May 11, 2021Observed: 2.13 ft at 4:45PM May 11, 2021Observed: 2.13 ft at 5:00PM May 11, 2021Observed: 2.13 ft at 5:15PM May 11, 2021Observed: 2.13 ft at 5:30PM May 11, 2021Observed: 2.13 ft at 5:45PM May 11, 2021Observed: 2.13 ft at 6:00PM May 11, 2021Observed: 2.13 ft at 6:15PM May 11, 2021Observed: 2.13 ft at 6:30PM May 11, 2021Observed: 2.13 ft at 6:45PM May 11, 2021Observed: 2.13 ft at 7:00PM May 11, 2021Observed: 2.13 ft at 7:15PM May 11, 2021Observed: 2.13 ft at 7:30PM May 11, 2021Observed: 2.13 ft at 7:45PM May 11, 2021Observed: 2.13 ft at 8:00PM May 11, 2021Observed: 2.13 ft at 8:15PM May 11, 2021Observed: 2.13 ft at 8:30PM May 11, 2021Observed: 2.13 ft at 8:45PM May 11, 2021Observed: 2.13 ft at 9:00PM May 11, 2021Observed: 2.13 ft at 9:15PM May 11, 2021Observed: 2.13 ft at 9:30PM May 11, 2021Observed: 2.13 ft at 9:45PM May 11, 2021Observed: 2.13 ft at 10:00PM May 11, 2021Observed: 2.13 ft at 10:15PM May 11, 2021Observed: 2.13 ft at 10:30PM May 11, 2021Observed: 2.13 ft at 10:45PM May 11, 2021Observed: 2.13 ft at 11:00PM May 11, 2021Observed: 2.13 ft at 11:15PM May 11, 2021Observed: 2.13 ft at 11:30PM May 11, 2021Observed: 2.13 ft at 11:45PM May 11, 2021Observed: 2.13 ft at 12:00AM May 12, 2021Observed: 2.13 ft at 12:15AM May 12, 2021Observed: 2.13 ft at 12:30AM May 12, 2021Observed: 2.13 ft at 12:45AM May 12, 2021Observed: 2.13 ft at 1:00AM May 12, 2021Observed: 2.13 ft at 1:15AM May 12, 2021Observed: 2.13 ft at 1:30AM May 12, 2021Observed: 2.13 ft at 1:45AM May 12, 2021Observed: 2.13 ft at 2:00AM May 12, 2021Observed: 2.13 ft at 2:15AM May 12, 2021Observed: 2.13 ft at 2:30AM May 12, 2021Observed: 2.13 ft at 2:45AM May 12, 2021Observed: 2.13 ft at 3:00AM May 12, 2021Observed: 2.13 ft at 3:15AM May 12, 2021Observed: 2.13 ft at 3:30AM May 12, 2021Observed: 2.13 ft at 3:45AM May 12, 2021Observed: 2.13 ft at 4:00AM May 12, 2021Observed: 2.13 ft at 4:15AM May 12, 2021Observed: 2.13 ft at 4:30AM May 12, 2021Observed: 2.12 ft at 4:45AM May 12, 2021Observed: 2.12 ft at 5:00AM May 12, 2021Observed: 2.12 ft at 5:15AM May 12, 2021Observed: 2.12 ft at 5:30AM May 12, 2021Observed: 2.12 ft at 5:45AM May 12, 2021Observed: 2.12 ft at 6:00AM May 12, 2021Observed: 2.12 ft at 6:15AM May 12, 2021Observed: 2.12 ft at 6:30AM May 12, 2021Observed: 2.12 ft at 6:45AM May 12, 2021Observed: 2.12 ft at 7:00AM May 12, 2021Observed: 2.12 ft at 7:15AM May 12, 2021Observed: 2.12 ft at 7:30AM May 12, 2021Observed: 2.12 ft at 7:45AM May 12, 2021Observed: 2.12 ft at 8:00AM May 12, 2021Observed: 2.12 ft at 8:15AM May 12, 2021Observed: 2.12 ft at 8:30AM May 12, 2021Observed: 2.12 ft at 8:45AM May 12, 2021Observed: 2.12 ft at 9:00AM May 12, 2021Observed: 2.12 ft at 9:15AM May 12, 2021Observed: 2.12 ft at 9:30AM May 12, 2021Observed: 2.12 ft at 9:45AM May 12, 2021Observed: 2.12 ft at 10:00AM May 12, 2021Observed: 2.12 ft at 10:15AM May 12, 2021Observed: 2.12 ft at 10:30AM May 12, 2021Observed: 2.12 ft at 10:45AM May 12, 2021Observed: 2.12 ft at 11:00AM May 12, 2021Observed: 2.12 ft at 11:15AM May 12, 2021Observed: 2.12 ft at 11:30AM May 12, 2021Observed: 2.12 ft at 11:45AM May 12, 2021Observed: 2.12 ft at 12:00PM May 12, 2021Observed: 2.12 ft at 12:15PM May 12, 2021Observed: 2.12 ft at 12:30PM May 12, 2021Observed: 2.12 ft at 12:45PM May 12, 2021Observed: 2.12 ft at 1:00PM May 12, 2021Observed: 2.12 ft at 1:15PM May 12, 2021Observed: 2.12 ft at 1:30PM May 12, 2021Observed: 2.12 ft at 1:45PM May 12, 2021Observed: 2.12 ft at 2:00PM May 12, 2021Observed: 2.12 ft at 2:15PM May 12, 2021Observed: 2.11 ft at 2:30PM May 12, 2021Observed: 2.12 ft at 2:45PM May 12, 2021Observed: 2.12 ft at 3:00PM May 12, 2021Observed: 2.12 ft at 3:15PM May 12, 2021Observed: 2.12 ft at 3:30PM May 12, 2021Observed: 2.12 ft at 3:45PM May 12, 2021Observed: 2.12 ft at 4:00PM May 12, 2021Observed: 2.12 ft at 4:15PM May 12, 2021Observed: 2.12 ft at 4:30PM May 12, 2021Observed: 2.12 ft at 4:45PM May 12, 2021Observed: 2.12 ft at 5:00PM May 12, 2021Observed: 2.12 ft at 5:15PM May 12, 2021Observed: 2.12 ft at 5:30PM May 12, 2021Observed: 2.12 ft at 5:45PM May 12, 2021Observed: 2.12 ft at 6:00PM May 12, 2021Observed: 2.12 ft at 6:15PM May 12, 2021Observed: 2.12 ft at 6:30PM May 12, 2021Observed: 2.12 ft at 6:45PM May 12, 2021Observed: 2.12 ft at 7:00PM May 12, 2021Observed: 2.12 ft at 7:15PM May 12, 2021Observed: 2.12 ft at 7:30PM May 12, 2021Observed: 2.12 ft at 7:45PM May 12, 2021Observed: 2.13 ft at 8:00PM May 12, 2021Observed: 2.13 ft at 8:15PM May 12, 2021Observed: 2.13 ft at 8:30PM May 12, 2021Observed: 2.13 ft at 8:45PM May 12, 2021Observed: 2.13 ft at 9:00PM May 12, 2021Observed: 2.13 ft at 9:15PM May 12, 2021Observed: 2.13 ft at 9:30PM May 12, 2021Observed: 2.13 ft at 9:45PM May 12, 2021Observed: 2.13 ft at 10:00PM May 12, 2021Observed: 2.13 ft at 10:15PM May 12, 2021Observed: 2.13 ft at 10:30PM May 12, 2021Observed: 2.13 ft at 10:45PM May 12, 2021Observed: 2.13 ft at 11:00PM May 12, 2021Observed: 2.13 ft at 11:15PM May 12, 2021Observed: 2.13 ft at 11:30PM May 12, 2021Observed: 2.13 ft at 11:45PM May 12, 2021Observed: 2.13 ft at 12:00AM May 13, 2021Observed: 2.13 ft at 12:15AM May 13, 2021Observed: 2.13 ft at 12:30AM May 13, 2021Observed: 2.13 ft at 12:45AM May 13, 2021Highest Forecast: 2.1 ft 2:00AM May 13, 2021Highest Forecast: 2.1 ft 3:00AM May 13, 2021Highest Forecast: 2.1 ft 4:00AM May 13, 2021Highest Forecast: 2.1 ft 5:00AM May 13, 2021Highest Forecast: 2.1 ft 6:00AM May 13, 2021Highest Forecast: 2.1 ft 7:00AM May 13, 2021Highest Forecast: 2.1 ft 8:00AM May 13, 2021Highest Forecast: 2.1 ft 9:00AM May 13, 2021Highest Forecast: 2.1 ft 10:00AM May 13, 2021Highest Forecast: 2.1 ft 11:00AM May 13, 2021Highest Forecast: 2.1 ft 12:00PM May 13, 2021Highest Forecast: 2.1 ft 1:00PM May 13, 2021Highest Forecast: 2.1 ft 2:00PM May 13, 2021Highest Forecast: 2.1 ft 3:00PM May 13, 2021Highest Forecast: 2.1 ft 4:00PM May 13, 2021Highest Forecast: 2.1 ft 5:00PM May 13, 2021Highest Forecast: 2.1 ft 6:00PM May 13, 2021Highest Forecast: 2.1 ft 7:00PM May 13, 2021Highest Forecast: 2.1 ft 8:00PM May 13, 2021Highest Forecast: 2.1 ft 9:00PM May 13, 2021Highest Forecast: 2.1 ft 10:00PM May 13, 2021Highest Forecast: 2.1 ft 11:00PM May 13, 2021Highest Forecast: 2.1 ft 12:00AM May 14, 2021Highest Forecast: 2.1 ft 1:00AM May 14, 2021Highest Forecast: 2.1 ft 2:00AM May 14, 2021Highest Forecast: 2.1 ft 3:00AM May 14, 2021Highest Forecast: 2.1 ft 4:00AM May 14, 2021Highest Forecast: 2.1 ft 5:00AM May 14, 2021Highest Forecast: 2.1 ft 6:00AM May 14, 2021Highest Forecast: 2.1 ft 7:00AM May 14, 2021Highest Forecast: 2.1 ft 8:00AM May 14, 2021Highest Forecast: 2.1 ft 9:00AM May 14, 2021Highest Forecast: 2.1 ft 10:00AM May 14, 2021Highest Forecast: 2.1 ft 11:00AM May 14, 2021Highest Forecast: 2.1 ft 12:00PM May 14, 2021Highest Forecast: 2.1 ft 1:00PM May 14, 2021Highest Forecast: 2.1 ft 2:00PM May 14, 2021Highest Forecast: 2.1 ft 3:00PM May 14, 2021Highest Forecast: 2.1 ft 4:00PM May 14, 2021Highest Forecast: 2.1 ft 5:00PM May 14, 2021Highest Forecast: 2.1 ft 6:00PM May 14, 2021Highest Forecast: 2.1 ft 7:00PM May 14, 2021Highest Forecast: 2.1 ft 8:00PM May 14, 2021Highest Forecast: 2.1 ft 9:00PM May 14, 2021Highest Forecast: 2.1 ft 10:00PM May 14, 2021Highest Forecast: 2.1 ft 11:00PM May 14, 2021Highest Forecast: 2.1 ft 12:00AM May 15, 2021Highest Forecast: 2.1 ft 1:00AM May 15, 2021Highest Forecast: 2.1 ft 2:00AM May 15, 2021Highest Forecast: 2.1 ft 3:00AM May 15, 2021Highest Forecast: 2.1 ft 4:00AM May 15, 2021Highest Forecast: 2.1 ft 5:00AM May 15, 2021Highest Forecast: 2.1 ft 6:00AM May 15, 2021Highest Forecast: 2.1 ft 7:00AM May 15, 2021Highest Forecast: 2.1 ft 8:00AM May 15, 2021Highest Forecast: 2.1 ft 9:00AM May 15, 2021Highest Forecast: 2.1 ft 10:00AM May 15, 2021Highest Forecast: 2.1 ft 11:00AM May 15, 2021Highest Forecast: 2.1 ft 12:00PM May 15, 2021Highest Forecast: 2.1 ft 1:00PM May 15, 2021Highest Forecast: 2.1 ft 2:00PM May 15, 2021Highest Forecast: 2.1 ft 3:00PM May 15, 2021Highest Forecast: 2.1 ft 4:00PM May 15, 2021Highest Forecast: 2.1 ft 5:00PM May 15, 2021Highest Forecast: 2.1 ft 6:00PM May 15, 2021Highest Forecast: 2.1 ft 7:00PM May 15, 2021Highest Forecast: 2.1 ft 8:00PM May 15, 2021Highest Forecast: 2.1 ft 9:00PM May 15, 2021Highest Forecast: 2.1 ft 10:00PM May 15, 2021Highest Forecast: 2.1 ft 11:00PM May 15, 2021Highest Forecast: 2.1 ft 12:00AM May 16, 2021Highest Forecast: 2.1 ft 1:00AM May 16, 2021Highest Forecast: 2.1 ft 2:00AM May 16, 2021Highest Forecast: 2.1 ft 3:00AM May 16, 2021Highest Forecast: 2.1 ft 4:00AM May 16, 2021Highest Forecast: 2.1 ft 5:00AM May 16, 2021Highest Forecast: 2.1 ft 6:00AM May 16, 2021Highest Forecast: 2.1 ft 7:00AM May 16, 2021Highest Forecast: 2.1 ft 8:00AM May 16, 2021Highest Forecast: 2.1 ft 9:00AM May 16, 2021Highest Forecast: 2.1 ft 10:00AM May 16, 2021Highest Forecast: 2.1 ft 11:00AM May 16, 2021Highest Forecast: 2.1 ft 12:00PM May 16, 2021Highest Forecast: 2.1 ft 1:00PM May 16, 2021Highest Forecast: 2.1 ft 2:00PM May 16, 2021Highest Forecast: 2.1 ft 3:00PM May 16, 2021Highest Forecast: 2.1 ft 4:00PM May 16, 2021Highest Forecast: 2.1 ft 5:00PM May 16, 2021Highest Forecast: 2.1 ft 6:00PM May 16, 2021Highest Forecast: 2.1 ft 7:00PM May 16, 2021Highest Forecast: 2.1 ft 8:00PM May 16, 2021Highest Forecast: 2.1 ft 9:00PM May 16, 2021Highest Forecast: 2.1 ft 10:00PM May 16, 2021Highest Forecast: 2.1 ft 11:00PM May 16, 2021Highest Forecast: 2.1 ft 12:00AM May 17, 2021Highest Forecast: 2.1 ft 1:00AM May 17, 2021Highest Forecast: 2.1 ft 2:00AM May 17, 2021Highest Forecast: 2.1 ft 3:00AM May 17, 2021Highest Forecast: 2.1 ft 4:00AM May 17, 2021Highest Forecast: 2.1 ft 5:00AM May 17, 2021USGS--Water Resources of the United StatesLRZC1(plotting HGIRG) Graph Created (1:45AM May 13, 2021)ObservedForecast (issued 8:14AM May 12)Latest observed value: 2.13 ft at 12:45 AM PDT 13-May-2021. Flood Stage is 24.6 ft
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
Reliability of the Forecast: Based on current and forecast river, weather and reservoir conditions

NOTE: Forecasts for the San Lorenzo Creek (Alameda) above Hayward are issued routinely year-round.

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Flood Categories (in feet)
Major Flood Stage: 33
Moderate Flood Stage: 29.64
Flood Stage: 24.6
Action Stage: 20.85
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
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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.
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33 Major Flooding. Homes and local roadways inundated with several feet of water.
29.64 Moderate Flooding. Homes and roadways adjacent to the creek in this location begin to flood.
24.64 Minor Flooding. At 24.64 feet, flooding may have begun downstream at the San Lorenzo Creek near San Lorenzo stream gage. NWS will issue Flash Flood Warning if not already issued.
20.85 Monitor stage. At 20.85 feet the San Lorenzo Creek near San Lorenzo gage downstream is close to flooding. NWS will issue a Flash Flood Watch if not already issued.
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Latitude: 37.685556° N, Longitude: 122.063333° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 24.6 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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Page last modified: 2-Nov-2020 7:27 PM
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