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Hydrograph River at a Glance Download
Colgan Creek near Sebastopol Stage (ft)Flow (cfs)Observed: 67.77 ft at 9:00PM May 07, 2021Observed: 67.77 ft at 9:15PM May 07, 2021Observed: 67.77 ft at 9:30PM May 07, 2021Observed: 67.77 ft at 9:45PM May 07, 2021Observed: 67.77 ft at 10:00PM May 07, 2021Observed: 67.77 ft at 10:15PM May 07, 2021Observed: 67.77 ft at 10:30PM May 07, 2021Observed: 67.77 ft at 10:45PM May 07, 2021Observed: 67.77 ft at 11:00PM May 07, 2021Observed: 67.77 ft at 11:15PM May 07, 2021Observed: 67.77 ft at 11:30PM May 07, 2021Observed: 67.77 ft at 11:45PM May 07, 2021Observed: 67.77 ft at 12:00AM May 08, 2021Observed: 67.77 ft at 12:15AM May 08, 2021Observed: 67.77 ft at 12:30AM May 08, 2021Observed: 67.77 ft at 12:45AM May 08, 2021Observed: 67.77 ft at 1:00AM May 08, 2021Observed: 67.77 ft at 1:15AM May 08, 2021Observed: 67.77 ft at 1:30AM May 08, 2021Observed: 67.77 ft at 1:45AM May 08, 2021Observed: 67.77 ft at 2:00AM May 08, 2021Observed: 67.77 ft at 2:15AM May 08, 2021Observed: 67.77 ft at 2:30AM May 08, 2021Observed: 67.77 ft at 2:45AM May 08, 2021Observed: 67.77 ft at 3:00AM May 08, 2021Observed: 67.77 ft at 3:15AM May 08, 2021Observed: 67.77 ft at 3:30AM May 08, 2021Observed: 67.77 ft at 3:45AM May 08, 2021Observed: 67.77 ft at 4:00AM May 08, 2021Observed: 67.77 ft at 4:15AM May 08, 2021Observed: 67.77 ft at 4:30AM May 08, 2021Observed: 67.77 ft at 4:45AM May 08, 2021Observed: 67.77 ft at 5:00AM May 08, 2021Observed: 67.77 ft at 5:15AM May 08, 2021Observed: 67.76 ft at 5:30AM May 08, 2021Observed: 67.77 ft at 5:45AM May 08, 2021Observed: 67.77 ft at 6:00AM May 08, 2021Observed: 67.77 ft at 6:15AM May 08, 2021Observed: 67.77 ft at 6:30AM May 08, 2021Observed: 67.77 ft at 6:45AM May 08, 2021Observed: 67.77 ft at 7:00AM May 08, 2021Observed: 67.76 ft at 7:15AM May 08, 2021Observed: 67.76 ft at 7:30AM May 08, 2021Observed: 67.77 ft at 7:45AM May 08, 2021Observed: 67.77 ft at 8:00AM May 08, 2021Observed: 67.77 ft at 8:15AM May 08, 2021Observed: 67.77 ft at 8:30AM May 08, 2021Observed: 67.77 ft at 8:45AM May 08, 2021Observed: 67.77 ft at 9:00AM May 08, 2021Observed: 67.77 ft at 9:15AM May 08, 2021Observed: 67.77 ft at 9:30AM May 08, 2021Observed: 67.77 ft at 9:45AM May 08, 2021Observed: 67.77 ft at 10:00AM May 08, 2021Observed: 67.77 ft at 10:15AM May 08, 2021Observed: 67.77 ft at 10:30AM May 08, 2021Observed: 67.77 ft at 10:45AM May 08, 2021Observed: 67.77 ft at 11:00AM May 08, 2021Observed: 67.77 ft at 11:15AM May 08, 2021Observed: 67.77 ft at 11:30AM May 08, 2021Observed: 67.77 ft at 11:45AM May 08, 2021Highest Observation: 67.78 ft at 12:00PM May 08, 2021Highest Observation: 67.78 ft at 12:15PM May 08, 2021Highest Observation: 67.78 ft at 12:30PM May 08, 2021Highest Observation: 67.78 ft at 12:45PM May 08, 2021Observed: 67.77 ft at 1:00PM May 08, 2021Observed: 67.77 ft at 1:15PM May 08, 2021Highest Observation: 67.78 ft at 1:30PM May 08, 2021Highest Observation: 67.78 ft at 1:45PM May 08, 2021Highest Observation: 67.78 ft at 2:00PM May 08, 2021Highest Observation: 67.78 ft at 2:15PM May 08, 2021Observed: 67.77 ft at 2:30PM May 08, 2021Highest Observation: 67.78 ft at 2:45PM May 08, 2021Observed: 67.77 ft at 3:00PM May 08, 2021Highest Observation: 67.78 ft at 3:15PM May 08, 2021Highest Observation: 67.78 ft at 3:30PM May 08, 2021Highest Observation: 67.78 ft at 3:45PM May 08, 2021Highest Observation: 67.78 ft at 4:00PM May 08, 2021Highest Observation: 67.78 ft at 4:15PM May 08, 2021Highest Observation: 67.78 ft at 4:30PM May 08, 2021Highest Observation: 67.78 ft at 4:45PM May 08, 2021Observed: 67.77 ft at 5:00PM May 08, 2021Highest Observation: 67.78 ft at 5:15PM May 08, 2021Highest Observation: 67.78 ft at 5:30PM May 08, 2021Highest Observation: 67.78 ft at 5:45PM May 08, 2021Highest Observation: 67.78 ft at 6:00PM May 08, 2021Highest Observation: 67.78 ft at 6:15PM May 08, 2021Highest Observation: 67.78 ft at 6:30PM May 08, 2021Highest Observation: 67.78 ft at 6:45PM May 08, 2021Highest Observation: 67.78 ft at 7:00PM May 08, 2021Highest Observation: 67.78 ft at 7:15PM May 08, 2021Highest Observation: 67.78 ft at 7:30PM May 08, 2021Highest Observation: 67.78 ft at 7:45PM May 08, 2021Highest Observation: 67.78 ft at 8:00PM May 08, 2021Highest Observation: 67.78 ft at 8:15PM May 08, 2021Highest Observation: 67.78 ft at 8:30PM May 08, 2021Observed: 67.77 ft at 8:45PM May 08, 2021Observed: 67.77 ft at 9:00PM May 08, 2021Observed: 67.77 ft at 9:15PM May 08, 2021Observed: 67.77 ft at 9:30PM May 08, 2021Observed: 67.77 ft at 9:45PM May 08, 2021Observed: 67.77 ft at 10:00PM May 08, 2021Observed: 67.77 ft at 10:15PM May 08, 2021Observed: 67.77 ft at 10:30PM May 08, 2021Observed: 67.77 ft at 10:45PM May 08, 2021Observed: 67.77 ft at 11:00PM May 08, 2021Observed: 67.77 ft at 11:15PM May 08, 2021Observed: 67.77 ft at 11:30PM May 08, 2021Observed: 67.77 ft at 11:45PM May 08, 2021Observed: 67.77 ft at 12:00AM May 09, 2021Observed: 67.77 ft at 12:15AM May 09, 2021Observed: 67.77 ft at 12:30AM May 09, 2021Observed: 67.77 ft at 12:45AM May 09, 2021Observed: 67.77 ft at 1:00AM May 09, 2021Observed: 67.77 ft at 1:15AM May 09, 2021Observed: 67.77 ft at 1:30AM May 09, 2021Observed: 67.77 ft at 1:45AM May 09, 2021Observed: 67.77 ft at 2:00AM May 09, 2021Observed: 67.77 ft at 2:15AM May 09, 2021Observed: 67.77 ft at 2:30AM May 09, 2021Observed: 67.77 ft at 2:45AM May 09, 2021Observed: 67.77 ft at 3:00AM May 09, 2021Observed: 67.77 ft at 3:15AM May 09, 2021Observed: 67.77 ft at 3:30AM May 09, 2021Observed: 67.77 ft at 3:45AM May 09, 2021Observed: 67.77 ft at 4:00AM May 09, 2021Observed: 67.77 ft at 4:15AM May 09, 2021Observed: 67.77 ft at 4:30AM May 09, 2021Observed: 67.77 ft at 4:45AM May 09, 2021Observed: 67.77 ft at 5:00AM May 09, 2021Observed: 67.77 ft at 5:15AM May 09, 2021Observed: 67.76 ft at 5:30AM May 09, 2021Observed: 67.77 ft at 5:45AM May 09, 2021Observed: 67.77 ft at 6:00AM May 09, 2021Observed: 67.77 ft at 6:15AM May 09, 2021Observed: 67.76 ft at 6:30AM May 09, 2021Observed: 67.77 ft at 6:45AM May 09, 2021Observed: 67.77 ft at 7:00AM May 09, 2021Observed: 67.77 ft at 7:15AM May 09, 2021Observed: 67.77 ft at 7:30AM May 09, 2021Observed: 67.77 ft at 7:45AM May 09, 2021Observed: 67.77 ft at 8:00AM May 09, 2021Observed: 67.77 ft at 8:15AM May 09, 2021Observed: 67.77 ft at 8:30AM May 09, 2021Observed: 67.77 ft at 8:45AM May 09, 2021Observed: 67.77 ft at 9:00AM May 09, 2021Observed: 67.77 ft at 9:15AM May 09, 2021Observed: 67.77 ft at 9:30AM May 09, 2021Observed: 67.77 ft at 9:45AM May 09, 2021Observed: 67.77 ft at 10:00AM May 09, 2021Observed: 67.77 ft at 10:15AM May 09, 2021Observed: 67.77 ft at 10:30AM May 09, 2021Observed: 67.77 ft at 10:45AM May 09, 2021Observed: 67.77 ft at 11:00AM May 09, 2021Observed: 67.77 ft at 11:15AM May 09, 2021Observed: 67.77 ft at 11:30AM May 09, 2021Observed: 67.77 ft at 11:45AM May 09, 2021Observed: 67.77 ft at 12:00PM May 09, 2021Observed: 67.77 ft at 12:15PM May 09, 2021Observed: 67.77 ft at 12:30PM May 09, 2021Observed: 67.77 ft at 12:45PM May 09, 2021Observed: 67.77 ft at 1:00PM May 09, 2021Observed: 67.77 ft at 1:15PM May 09, 2021Observed: 67.77 ft at 1:30PM May 09, 2021Observed: 67.77 ft at 1:45PM May 09, 2021Observed: 67.77 ft at 2:00PM May 09, 2021Observed: 67.77 ft at 2:15PM May 09, 2021Observed: 67.77 ft at 2:30PM May 09, 2021Observed: 67.77 ft at 2:45PM May 09, 2021Observed: 67.77 ft at 3:00PM May 09, 2021Observed: 67.77 ft at 3:15PM May 09, 2021Observed: 67.77 ft at 3:30PM May 09, 2021Observed: 67.77 ft at 3:45PM May 09, 2021Observed: 67.77 ft at 4:00PM May 09, 2021Observed: 67.77 ft at 4:15PM May 09, 2021Observed: 67.77 ft at 4:30PM May 09, 2021Observed: 67.77 ft at 4:45PM May 09, 2021Highest Observation: 67.78 ft at 5:00PM May 09, 2021Observed: 67.77 ft at 5:15PM May 09, 2021Observed: 67.77 ft at 5:30PM May 09, 2021Observed: 67.77 ft at 5:45PM May 09, 2021Observed: 67.77 ft at 6:00PM May 09, 2021Observed: 67.77 ft at 6:15PM May 09, 2021Observed: 67.77 ft at 6:30PM May 09, 2021Observed: 67.77 ft at 6:45PM May 09, 2021Observed: 67.77 ft at 7:00PM May 09, 2021Highest Observation: 67.78 ft at 7:15PM May 09, 2021Observed: 67.77 ft at 7:30PM May 09, 2021Observed: 67.77 ft at 7:45PM May 09, 2021Observed: 67.77 ft at 8:00PM May 09, 2021Observed: 67.77 ft at 8:15PM May 09, 2021Observed: 67.77 ft at 8:30PM May 09, 2021Observed: 67.77 ft at 8:45PM May 09, 2021Observed: 67.77 ft at 9:00PM May 09, 2021Observed: 67.77 ft at 9:15PM May 09, 2021Observed: 67.77 ft at 9:30PM May 09, 2021Observed: 67.77 ft at 9:45PM May 09, 2021Observed: 67.77 ft at 10:00PM May 09, 2021Observed: 67.77 ft at 10:15PM May 09, 2021Observed: 67.77 ft at 10:30PM May 09, 2021Observed: 67.77 ft at 10:45PM May 09, 2021Observed: 67.77 ft at 11:00PM May 09, 2021Observed: 67.77 ft at 11:15PM May 09, 2021Observed: 67.77 ft at 11:30PM May 09, 2021Observed: 67.77 ft at 11:45PM May 09, 2021Observed: 67.77 ft at 12:00AM May 10, 2021Observed: 67.77 ft at 12:15AM May 10, 2021Observed: 67.77 ft at 12:30AM May 10, 2021Observed: 67.77 ft at 12:45AM May 10, 2021Observed: 67.77 ft at 1:00AM May 10, 2021Observed: 67.77 ft at 1:15AM May 10, 2021Observed: 67.77 ft at 1:30AM May 10, 2021Observed: 67.77 ft at 1:45AM May 10, 2021Observed: 67.77 ft at 2:00AM May 10, 2021Observed: 67.77 ft at 2:15AM May 10, 2021Observed: 67.77 ft at 2:30AM May 10, 2021Observed: 67.77 ft at 2:45AM May 10, 2021Observed: 67.77 ft at 3:00AM May 10, 2021Observed: 67.77 ft at 3:15AM May 10, 2021Observed: 67.77 ft at 3:30AM May 10, 2021Observed: 67.77 ft at 3:45AM May 10, 2021Observed: 67.77 ft at 4:00AM May 10, 2021Observed: 67.77 ft at 4:15AM May 10, 2021Observed: 67.77 ft at 4:30AM May 10, 2021Observed: 67.77 ft at 4:45AM May 10, 2021Observed: 67.77 ft at 5:00AM May 10, 2021Observed: 67.77 ft at 5:15AM May 10, 2021Observed: 67.77 ft at 5:30AM May 10, 2021Observed: 67.77 ft at 5:45AM May 10, 2021Observed: 67.77 ft at 6:00AM May 10, 2021Observed: 67.77 ft at 6:15AM May 10, 2021Observed: 67.77 ft at 6:30AM May 10, 2021Observed: 67.76 ft at 6:45AM May 10, 2021Observed: 67.77 ft at 7:00AM May 10, 2021Observed: 67.77 ft at 7:15AM May 10, 2021Observed: 67.77 ft at 7:30AM May 10, 2021Observed: 67.77 ft at 7:45AM May 10, 2021Observed: 67.77 ft at 8:00AM May 10, 2021Observed: 67.77 ft at 8:15AM May 10, 2021Observed: 67.77 ft at 8:30AM May 10, 2021Observed: 67.77 ft at 8:45AM May 10, 2021Observed: 67.77 ft at 9:00AM May 10, 2021Observed: 67.77 ft at 9:15AM May 10, 2021Observed: 67.77 ft at 9:30AM May 10, 2021Observed: 67.77 ft at 9:45AM May 10, 2021Observed: 67.77 ft at 10:00AM May 10, 2021Observed: 67.77 ft at 10:15AM May 10, 2021Observed: 67.77 ft at 10:30AM May 10, 2021Observed: 67.77 ft at 10:45AM May 10, 2021Observed: 67.77 ft at 11:00AM May 10, 2021Observed: 67.77 ft at 11:15AM May 10, 2021Observed: 67.77 ft at 11:30AM May 10, 2021Observed: 67.77 ft at 11:45AM May 10, 2021Observed: 67.77 ft at 12:00PM May 10, 2021Observed: 67.77 ft at 12:15PM May 10, 2021Observed: 67.77 ft at 12:30PM May 10, 2021Observed: 67.77 ft at 12:45PM May 10, 2021Observed: 67.77 ft at 1:00PM May 10, 2021Observed: 67.77 ft at 1:15PM May 10, 2021Observed: 67.77 ft at 1:30PM May 10, 2021Observed: 67.77 ft at 1:45PM May 10, 2021Observed: 67.77 ft at 2:00PM May 10, 2021Observed: 67.77 ft at 2:15PM May 10, 2021Observed: 67.77 ft at 2:30PM May 10, 2021Observed: 67.77 ft at 2:45PM May 10, 2021Highest Observation: 67.78 ft at 3:00PM May 10, 2021Observed: 67.77 ft at 3:15PM May 10, 2021Observed: 67.77 ft at 3:30PM May 10, 2021Observed: 67.77 ft at 3:45PM May 10, 2021Observed: 67.77 ft at 4:00PM May 10, 2021Observed: 67.77 ft at 4:15PM May 10, 2021Observed: 67.77 ft at 4:30PM May 10, 2021Observed: 67.77 ft at 4:45PM May 10, 2021Observed: 67.77 ft at 5:00PM May 10, 2021Highest Observation: 67.78 ft at 5:15PM May 10, 2021Highest Observation: 67.78 ft at 5:30PM May 10, 2021Observed: 67.77 ft at 5:45PM May 10, 2021Observed: 67.77 ft at 6:00PM May 10, 2021Highest Observation: 67.78 ft at 6:15PM May 10, 2021Observed: 67.77 ft at 6:30PM May 10, 2021Observed: 67.77 ft at 6:45PM May 10, 2021Highest Observation: 67.78 ft at 7:00PM May 10, 2021Observed: 67.77 ft at 7:15PM May 10, 2021Observed: 67.77 ft at 7:30PM May 10, 2021Observed: 67.77 ft at 7:45PM May 10, 2021Observed: 67.77 ft at 8:00PM May 10, 2021Highest Observation: 67.78 ft at 8:15PM May 10, 2021Observed: 67.77 ft at 8:30PM May 10, 2021Observed: 67.77 ft at 8:45PM May 10, 2021Observed: 67.77 ft at 9:00PM May 10, 2021Observed: 67.77 ft at 9:15PM May 10, 2021Observed: 67.77 ft at 9:30PM May 10, 2021Observed: 67.77 ft at 9:45PM May 10, 2021Observed: 67.77 ft at 10:00PM May 10, 2021Observed: 67.77 ft at 10:15PM May 10, 2021Observed: 67.77 ft at 10:30PM May 10, 2021Observed: 67.77 ft at 10:45PM May 10, 2021Observed: 67.77 ft at 11:00PM May 10, 2021Observed: 67.77 ft at 11:15PM May 10, 2021Observed: 67.77 ft at 11:30PM May 10, 2021Observed: 67.77 ft at 11:45PM May 10, 2021Observed: 67.77 ft at 12:00AM May 11, 2021Observed: 67.77 ft at 12:15AM May 11, 2021Observed: 67.77 ft at 12:30AM May 11, 2021Observed: 67.77 ft at 12:45AM May 11, 2021Observed: 67.77 ft at 1:00AM May 11, 2021Observed: 67.77 ft at 1:15AM May 11, 2021Observed: 67.77 ft at 1:30AM May 11, 2021Observed: 67.77 ft at 1:45AM May 11, 2021Observed: 67.77 ft at 2:00AM May 11, 2021Observed: 67.77 ft at 2:15AM May 11, 2021Observed: 67.77 ft at 2:30AM May 11, 2021Observed: 67.77 ft at 2:45AM May 11, 2021Observed: 67.77 ft at 3:00AM May 11, 2021Observed: 67.77 ft at 3:15AM May 11, 2021Observed: 67.77 ft at 3:30AM May 11, 2021Observed: 67.77 ft at 3:45AM May 11, 2021Observed: 67.77 ft at 4:00AM May 11, 2021Observed: 67.77 ft at 4:15AM May 11, 2021Observed: 67.76 ft at 4:30AM May 11, 2021Observed: 67.77 ft at 4:45AM May 11, 2021Observed: 67.77 ft at 5:00AM May 11, 2021Observed: 67.76 ft at 5:15AM May 11, 2021Observed: 67.76 ft at 5:30AM May 11, 2021Observed: 67.77 ft at 5:45AM May 11, 2021Observed: 67.77 ft at 6:00AM May 11, 2021Observed: 67.77 ft at 6:15AM May 11, 2021Observed: 67.76 ft at 6:30AM May 11, 2021Observed: 67.76 ft at 6:45AM May 11, 2021Observed: 67.76 ft at 7:00AM May 11, 2021Observed: 67.77 ft at 7:15AM May 11, 2021Observed: 67.77 ft at 7:30AM May 11, 2021Observed: 67.77 ft at 7:45AM May 11, 2021Observed: 67.77 ft at 8:00AM May 11, 2021Observed: 67.77 ft at 8:15AM May 11, 2021Observed: 67.77 ft at 8:30AM May 11, 2021Observed: 67.77 ft at 8:45AM May 11, 2021Observed: 67.77 ft at 9:00AM May 11, 2021Observed: 67.77 ft at 9:15AM May 11, 2021Observed: 67.77 ft at 9:30AM May 11, 2021Observed: 67.77 ft at 9:45AM May 11, 2021Observed: 67.77 ft at 10:00AM May 11, 2021Observed: 67.77 ft at 10:15AM May 11, 2021Observed: 67.77 ft at 10:30AM May 11, 2021Observed: 67.77 ft at 10:45AM May 11, 2021Observed: 67.77 ft at 11:00AM May 11, 2021Observed: 67.77 ft at 11:15AM May 11, 2021Observed: 67.77 ft at 11:30AM May 11, 2021Observed: 67.77 ft at 11:45AM May 11, 2021Observed: 67.77 ft at 12:00PM May 11, 2021Observed: 67.77 ft at 12:15PM May 11, 2021Observed: 67.77 ft at 12:30PM May 11, 2021Observed: 67.77 ft at 12:45PM May 11, 2021Observed: 67.77 ft at 1:00PM May 11, 2021Observed: 67.77 ft at 1:15PM May 11, 2021Observed: 67.77 ft at 1:30PM May 11, 2021Observed: 67.77 ft at 1:45PM May 11, 2021Observed: 67.77 ft at 2:00PM May 11, 2021Observed: 67.77 ft at 2:15PM May 11, 2021Observed: 67.77 ft at 2:30PM May 11, 2021Observed: 67.77 ft at 2:45PM May 11, 2021Observed: 67.77 ft at 3:00PM May 11, 2021Observed: 67.77 ft at 3:15PM May 11, 2021Observed: 67.77 ft at 3:30PM May 11, 2021Observed: 67.77 ft at 3:45PM May 11, 2021Observed: 67.77 ft at 4:00PM May 11, 2021Observed: 67.77 ft at 4:15PM May 11, 2021Observed: 67.77 ft at 4:30PM May 11, 2021Observed: 67.77 ft at 4:45PM May 11, 2021Observed: 67.77 ft at 5:00PM May 11, 2021Observed: 67.77 ft at 5:15PM May 11, 2021Observed: 67.77 ft at 5:30PM May 11, 2021Observed: 67.77 ft at 5:45PM May 11, 2021Observed: 67.77 ft at 6:00PM May 11, 2021Observed: 67.77 ft at 6:15PM May 11, 2021Observed: 67.77 ft at 6:30PM May 11, 2021Observed: 67.77 ft at 6:45PM May 11, 2021Observed: 67.77 ft at 7:00PM May 11, 2021Observed: 67.77 ft at 7:15PM May 11, 2021Observed: 67.77 ft at 7:30PM May 11, 2021Observed: 67.77 ft at 7:45PM May 11, 2021Observed: 67.77 ft at 8:00PM May 11, 2021Observed: 67.77 ft at 8:15PM May 11, 2021Observed: 67.77 ft at 8:30PM May 11, 2021Observed: 67.77 ft at 8:45PM May 11, 2021Observed: 67.77 ft at 9:00PM May 11, 2021Observed: 67.77 ft at 9:15PM May 11, 2021Observed: 67.77 ft at 9:30PM May 11, 2021Observed: 67.77 ft at 9:45PM May 11, 2021Observed: 67.77 ft at 10:00PM May 11, 2021Observed: 67.77 ft at 10:15PM May 11, 2021Observed: 67.77 ft at 10:30PM May 11, 2021Observed: 67.77 ft at 10:45PM May 11, 2021Observed: 67.77 ft at 11:00PM May 11, 2021Observed: 67.77 ft at 11:15PM May 11, 2021Observed: 67.77 ft at 11:30PM May 11, 2021Observed: 67.77 ft at 11:45PM May 11, 2021Observed: 67.77 ft at 12:00AM May 12, 2021Observed: 67.77 ft at 12:15AM May 12, 2021Observed: 67.77 ft at 12:30AM May 12, 2021Observed: 67.77 ft at 12:45AM May 12, 2021Observed: 67.77 ft at 1:00AM May 12, 2021Observed: 67.77 ft at 1:15AM May 12, 2021Observed: 67.77 ft at 1:30AM May 12, 2021Observed: 67.77 ft at 1:45AM May 12, 2021Observed: 67.77 ft at 2:00AM May 12, 2021Observed: 67.77 ft at 2:15AM May 12, 2021Observed: 67.77 ft at 2:30AM May 12, 2021Observed: 67.77 ft at 2:45AM May 12, 2021Observed: 67.77 ft at 3:00AM May 12, 2021Observed: 67.77 ft at 3:15AM May 12, 2021Observed: 67.77 ft at 3:30AM May 12, 2021Observed: 67.77 ft at 3:45AM May 12, 2021Observed: 67.77 ft at 4:00AM May 12, 2021Observed: 67.77 ft at 4:15AM May 12, 2021Observed: 67.77 ft at 4:30AM May 12, 2021Observed: 67.77 ft at 4:45AM May 12, 2021Observed: 67.77 ft at 5:00AM May 12, 2021Observed: 67.77 ft at 5:15AM May 12, 2021Observed: 67.77 ft at 5:30AM May 12, 2021Observed: 67.77 ft at 5:45AM May 12, 2021Observed: 67.77 ft at 6:00AM May 12, 2021Observed: 67.77 ft at 6:15AM May 12, 2021Observed: 67.77 ft at 6:30AM May 12, 2021Observed: 67.77 ft at 6:45AM May 12, 2021Observed: 67.77 ft at 7:00AM May 12, 2021Observed: 67.77 ft at 7:15AM May 12, 2021Observed: 67.77 ft at 7:30AM May 12, 2021Observed: 67.77 ft at 7:45AM May 12, 2021Observed: 67.77 ft at 8:00AM May 12, 2021Observed: 67.77 ft at 8:15AM May 12, 2021Observed: 67.77 ft at 8:30AM May 12, 2021Observed: 67.77 ft at 8:45AM May 12, 2021Observed: 67.77 ft at 9:00AM May 12, 2021Observed: 67.77 ft at 9:15AM May 12, 2021Observed: 67.77 ft at 9:30AM May 12, 2021Observed: 67.77 ft at 9:45AM May 12, 2021Observed: 67.77 ft at 10:00AM May 12, 2021Observed: 67.77 ft at 10:15AM May 12, 2021Observed: 67.77 ft at 10:30AM May 12, 2021Observed: 67.77 ft at 10:45AM May 12, 2021Observed: 67.77 ft at 11:00AM May 12, 2021Observed: 67.77 ft at 11:15AM May 12, 2021Observed: 67.77 ft at 11:30AM May 12, 2021Observed: 67.77 ft at 11:45AM May 12, 2021Observed: 67.77 ft at 12:00PM May 12, 2021Observed: 67.77 ft at 12:15PM May 12, 2021Observed: 67.77 ft at 12:30PM May 12, 2021Observed: 67.77 ft at 12:45PM May 12, 2021Observed: 67.77 ft at 1:00PM May 12, 2021Observed: 67.77 ft at 1:15PM May 12, 2021Observed: 67.77 ft at 1:30PM May 12, 2021Observed: 67.77 ft at 1:45PM May 12, 2021Highest Observation: 67.78 ft at 2:00PM May 12, 2021Highest Observation: 67.78 ft at 2:15PM May 12, 2021Observed: 67.77 ft at 2:30PM May 12, 2021Observed: 67.77 ft at 2:45PM May 12, 2021Observed: 67.77 ft at 3:00PM May 12, 2021Highest Observation: 67.78 ft at 3:15PM May 12, 2021Highest Observation: 67.78 ft at 3:30PM May 12, 2021Highest Observation: 67.78 ft at 3:45PM May 12, 2021Highest Observation: 67.78 ft at 4:00PM May 12, 2021Highest Observation: 67.78 ft at 4:15PM May 12, 2021Highest Observation: 67.78 ft at 4:30PM May 12, 2021Highest Observation: 67.78 ft at 4:45PM May 12, 2021Highest Observation: 67.78 ft at 5:00PM May 12, 2021Highest Observation: 67.78 ft at 5:15PM May 12, 2021Highest Observation: 67.78 ft at 5:30PM May 12, 2021Highest Observation: 67.78 ft at 5:45PM May 12, 2021Highest Observation: 67.78 ft at 6:00PM May 12, 2021Observed: 67.77 ft at 6:15PM May 12, 2021Observed: 67.77 ft at 6:30PM May 12, 2021Observed: 67.77 ft at 6:45PM May 12, 2021Observed: 67.77 ft at 7:00PM May 12, 2021Observed: 67.77 ft at 7:15PM May 12, 2021Observed: 67.77 ft at 7:30PM May 12, 2021Observed: 67.77 ft at 7:45PM May 12, 2021Observed: 67.77 ft at 8:00PM May 12, 2021Observed: 67.77 ft at 8:15PM May 12, 2021USGS--Water Resources of the United StatesCGNC1(plotting HGIRG) Graph Created (8:45PM May 12, 2021)ObservedLatest observed value: 67.77 ft at 8:15 PM PDT 12-May-2021. Flood Stage is 75 ft
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Tabular Data (UTC)
Tabular Data (PDT)
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Datum: Not Available
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NOTE: Graphical forecasts are not available for the Colgan Creek near Sebastopol. During times of high water, forecast crest information can be found in the text products.
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Flood Categories (in feet)
Major Flood Stage: 79
Moderate Flood Stage: 76.5
Flood Stage: 75
Action Stage: 73.5
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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79 Major Flooding. Major floodplain inundation and water levels at approximately 1 foot above elevation of bridge deck on Llano Road.
76.5 Moderate Flooding. Additional floodplain and roadway inundation on Llano Road. NWS will issue a Flash Flood Warning, if not yet already issued.
75 Minor Flooding. Floodplain upstream of the Llano Road bridge on right bank (north) side begins to flood into adjacent farmland. NWS will issue an Urban/Small Stream Advisory, if not yet already issued.
73.5 Monitor Stage. Roadside ditch upstream of Llano Road bridge on the left bank (south) side begins to flood. NWS may issue a Flash Flood Watch, if not yet already issued.
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Latitude: 38.373611° N, Longitude: 122.767222° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 75 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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