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Hydrograph River at a Glance Download
Napa River near St. Helena Stage (ft)Flow (kcfs)Observed: 0.58 ft at 11:45PM Jan 11, 2021Observed: 0.58 ft at 12:00AM Jan 12, 2021Observed: 0.58 ft at 12:15AM Jan 12, 2021Observed: 0.58 ft at 12:30AM Jan 12, 2021Observed: 0.58 ft at 12:45AM Jan 12, 2021Observed: 0.58 ft at 1:00AM Jan 12, 2021Observed: 0.58 ft at 1:15AM Jan 12, 2021Observed: 0.57 ft at 1:30AM Jan 12, 2021Observed: 0.58 ft at 1:45AM Jan 12, 2021Observed: 0.58 ft at 2:00AM Jan 12, 2021Observed: 0.58 ft at 2:15AM Jan 12, 2021Observed: 0.58 ft at 2:30AM Jan 12, 2021Observed: 0.57 ft at 2:45AM Jan 12, 2021Observed: 0.57 ft at 3:00AM Jan 12, 2021Observed: 0.56 ft at 3:15AM Jan 12, 2021Observed: 0.57 ft at 3:30AM Jan 12, 2021Observed: 0.57 ft at 3:45AM Jan 12, 2021Observed: 0.57 ft at 4:00AM Jan 12, 2021Observed: 0.57 ft at 4:15AM Jan 12, 2021Observed: 0.57 ft at 4:30AM Jan 12, 2021Observed: 0.57 ft at 4:45AM Jan 12, 2021Observed: 0.58 ft at 5:00AM Jan 12, 2021Observed: 0.57 ft at 5:15AM Jan 12, 2021Observed: 0.57 ft at 5:30AM Jan 12, 2021Observed: 0.58 ft at 5:45AM Jan 12, 2021Observed: 0.57 ft at 6:00AM Jan 12, 2021Observed: 0.57 ft at 6:15AM Jan 12, 2021Observed: 0.57 ft at 6:30AM Jan 12, 2021Observed: 0.57 ft at 6:45AM Jan 12, 2021Observed: 0.58 ft at 7:00AM Jan 12, 2021Observed: 0.58 ft at 7:15AM Jan 12, 2021Observed: 0.57 ft at 7:30AM Jan 12, 2021Observed: 0.58 ft at 7:45AM Jan 12, 2021Observed: 0.58 ft at 8:00AM Jan 12, 2021Observed: 0.57 ft at 8:15AM Jan 12, 2021Observed: 0.58 ft at 8:30AM Jan 12, 2021Observed: 0.58 ft at 8:45AM Jan 12, 2021Observed: 0.57 ft at 9:00AM Jan 12, 2021Observed: 0.58 ft at 9:15AM Jan 12, 2021Observed: 0.58 ft at 9:30AM Jan 12, 2021Observed: 0.58 ft at 9:45AM Jan 12, 2021Observed: 0.58 ft at 10:00AM Jan 12, 2021Observed: 0.58 ft at 10:15AM Jan 12, 2021Observed: 0.58 ft at 10:30AM Jan 12, 2021Observed: 0.58 ft at 10:45AM Jan 12, 2021Observed: 0.58 ft at 11:00AM Jan 12, 2021Observed: 0.59 ft at 11:15AM Jan 12, 2021Observed: 0.58 ft at 11:30AM Jan 12, 2021Observed: 0.58 ft at 11:45AM Jan 12, 2021Observed: 0.59 ft at 12:00PM Jan 12, 2021Observed: 0.58 ft at 12:15PM Jan 12, 2021Observed: 0.58 ft at 12:30PM Jan 12, 2021Observed: 0.59 ft at 12:45PM Jan 12, 2021Observed: 0.58 ft at 1:00PM Jan 12, 2021Observed: 0.58 ft at 1:15PM Jan 12, 2021Observed: 0.58 ft at 1:30PM Jan 12, 2021Observed: 0.58 ft at 1:45PM Jan 12, 2021Observed: 0.58 ft at 2:00PM Jan 12, 2021Observed: 0.58 ft at 2:15PM Jan 12, 2021Observed: 0.59 ft at 2:30PM Jan 12, 2021Observed: 0.58 ft at 2:45PM Jan 12, 2021Observed: 0.58 ft at 3:00PM Jan 12, 2021Observed: 0.58 ft at 3:15PM Jan 12, 2021Observed: 0.58 ft at 3:30PM Jan 12, 2021Observed: 0.58 ft at 3:45PM Jan 12, 2021Observed: 0.58 ft at 4:00PM Jan 12, 2021Observed: 0.58 ft at 4:15PM Jan 12, 2021Observed: 0.58 ft at 4:30PM Jan 12, 2021Observed: 0.58 ft at 4:45PM Jan 12, 2021Observed: 0.58 ft at 5:00PM Jan 12, 2021Observed: 0.58 ft at 5:15PM Jan 12, 2021Observed: 0.58 ft at 5:30PM Jan 12, 2021Observed: 0.58 ft at 5:45PM Jan 12, 2021Observed: 0.57 ft at 6:00PM Jan 12, 2021Observed: 0.58 ft at 6:15PM Jan 12, 2021Observed: 0.58 ft at 6:30PM Jan 12, 2021Observed: 0.57 ft at 6:45PM Jan 12, 2021Observed: 0.58 ft at 7:00PM Jan 12, 2021Observed: 0.58 ft at 7:15PM Jan 12, 2021Observed: 0.57 ft at 7:30PM Jan 12, 2021Observed: 0.58 ft at 7:45PM Jan 12, 2021Observed: 0.58 ft at 8:00PM Jan 12, 2021Observed: 0.58 ft at 8:15PM Jan 12, 2021Observed: 0.58 ft at 8:30PM Jan 12, 2021Observed: 0.58 ft at 8:45PM Jan 12, 2021Observed: 0.58 ft at 9:00PM Jan 12, 2021Observed: 0.58 ft at 9:15PM Jan 12, 2021Observed: 0.57 ft at 9:30PM Jan 12, 2021Observed: 0.58 ft at 9:45PM Jan 12, 2021Observed: 0.57 ft at 10:00PM Jan 12, 2021Observed: 0.57 ft at 10:15PM Jan 12, 2021Observed: 0.58 ft at 10:30PM Jan 12, 2021Observed: 0.57 ft at 10:45PM Jan 12, 2021Observed: 0.57 ft at 11:00PM Jan 12, 2021Observed: 0.57 ft at 11:15PM Jan 12, 2021Observed: 0.57 ft at 11:30PM Jan 12, 2021Observed: 0.58 ft at 11:45PM Jan 12, 2021Observed: 0.57 ft at 12:00AM Jan 13, 2021Observed: 0.57 ft at 12:15AM Jan 13, 2021Observed: 0.57 ft at 12:30AM Jan 13, 2021Observed: 0.57 ft at 12:45AM Jan 13, 2021Observed: 0.57 ft at 1:00AM Jan 13, 2021Observed: 0.57 ft at 1:15AM Jan 13, 2021Observed: 0.57 ft at 1:30AM Jan 13, 2021Observed: 0.57 ft at 1:45AM Jan 13, 2021Observed: 0.57 ft at 2:00AM Jan 13, 2021Observed: 0.57 ft at 2:15AM Jan 13, 2021Observed: 0.58 ft at 2:30AM Jan 13, 2021Observed: 0.57 ft at 2:45AM Jan 13, 2021Observed: 0.57 ft at 3:00AM Jan 13, 2021Observed: 0.58 ft at 3:15AM Jan 13, 2021Observed: 0.58 ft at 3:30AM Jan 13, 2021Observed: 0.57 ft at 3:45AM Jan 13, 2021Observed: 0.58 ft at 4:00AM Jan 13, 2021Observed: 0.58 ft at 4:15AM Jan 13, 2021Observed: 0.57 ft at 4:30AM Jan 13, 2021Observed: 0.58 ft at 4:45AM Jan 13, 2021Observed: 0.57 ft at 5:00AM Jan 13, 2021Observed: 0.58 ft at 5:15AM Jan 13, 2021Observed: 0.58 ft at 5:30AM Jan 13, 2021Observed: 0.58 ft at 5:45AM Jan 13, 2021Observed: 0.58 ft at 6:00AM Jan 13, 2021Observed: 0.58 ft at 6:15AM Jan 13, 2021Observed: 0.58 ft at 6:30AM Jan 13, 2021Observed: 0.58 ft at 6:45AM Jan 13, 2021Observed: 0.58 ft at 7:00AM Jan 13, 2021Observed: 0.58 ft at 7:15AM Jan 13, 2021Observed: 0.58 ft at 7:30AM Jan 13, 2021Observed: 0.58 ft at 7:45AM Jan 13, 2021Observed: 0.59 ft at 8:00AM Jan 13, 2021Observed: 0.58 ft at 8:15AM Jan 13, 2021Observed: 0.58 ft at 8:30AM Jan 13, 2021Observed: 0.58 ft at 8:45AM Jan 13, 2021Observed: 0.58 ft at 9:00AM Jan 13, 2021Observed: 0.58 ft at 9:15AM Jan 13, 2021Observed: 0.58 ft at 9:30AM Jan 13, 2021Observed: 0.58 ft at 9:45AM Jan 13, 2021Observed: 0.58 ft at 10:00AM Jan 13, 2021Observed: 0.58 ft at 10:15AM Jan 13, 2021Observed: 0.58 ft at 10:30AM Jan 13, 2021Observed: 0.58 ft at 10:45AM Jan 13, 2021Observed: 0.59 ft at 11:00AM Jan 13, 2021Observed: 0.59 ft at 11:15AM Jan 13, 2021Observed: 0.58 ft at 11:30AM Jan 13, 2021Observed: 0.59 ft at 11:45AM Jan 13, 2021Observed: 0.59 ft at 12:00PM Jan 13, 2021Observed: 0.59 ft at 12:15PM Jan 13, 2021Observed: 0.59 ft at 12:30PM Jan 13, 2021Observed: 0.59 ft at 12:45PM Jan 13, 2021Observed: 0.58 ft at 1:00PM Jan 13, 2021Observed: 0.58 ft at 1:15PM Jan 13, 2021Observed: 0.59 ft at 1:30PM Jan 13, 2021Observed: 0.58 ft at 1:45PM Jan 13, 2021Observed: 0.58 ft at 2:00PM Jan 13, 2021Observed: 0.59 ft at 2:15PM Jan 13, 2021Observed: 0.59 ft at 2:30PM Jan 13, 2021Observed: 0.58 ft at 2:45PM Jan 13, 2021Observed: 0.59 ft at 3:00PM Jan 13, 2021Observed: 0.59 ft at 3:15PM Jan 13, 2021Observed: 0.58 ft at 3:30PM Jan 13, 2021Observed: 0.59 ft at 3:45PM Jan 13, 2021Observed: 0.58 ft at 4:00PM Jan 13, 2021Observed: 0.58 ft at 4:15PM Jan 13, 2021Observed: 0.59 ft at 4:30PM Jan 13, 2021Observed: 0.58 ft at 4:45PM Jan 13, 2021Observed: 0.59 ft at 5:00PM Jan 13, 2021Observed: 0.58 ft at 5:15PM Jan 13, 2021Observed: 0.58 ft at 5:30PM Jan 13, 2021Observed: 0.59 ft at 5:45PM Jan 13, 2021Observed: 0.58 ft at 6:00PM Jan 13, 2021Observed: 0.58 ft at 6:15PM Jan 13, 2021Observed: 0.58 ft at 6:30PM Jan 13, 2021Observed: 0.58 ft at 6:45PM Jan 13, 2021Observed: 0.59 ft at 7:00PM Jan 13, 2021Observed: 0.58 ft at 7:15PM Jan 13, 2021Observed: 0.58 ft at 7:30PM Jan 13, 2021Observed: 0.58 ft at 7:45PM Jan 13, 2021Observed: 0.58 ft at 8:00PM Jan 13, 2021Observed: 0.58 ft at 8:15PM Jan 13, 2021Observed: 0.58 ft at 8:30PM Jan 13, 2021Observed: 0.58 ft at 8:45PM Jan 13, 2021Observed: 0.58 ft at 9:00PM Jan 13, 2021Observed: 0.58 ft at 9:15PM Jan 13, 2021Observed: 0.58 ft at 9:30PM Jan 13, 2021Observed: 0.58 ft at 9:45PM Jan 13, 2021Observed: 0.58 ft at 10:00PM Jan 13, 2021Observed: 0.58 ft at 10:15PM Jan 13, 2021Observed: 0.58 ft at 10:30PM Jan 13, 2021Observed: 0.58 ft at 10:45PM Jan 13, 2021Observed: 0.58 ft at 11:00PM Jan 13, 2021Observed: 0.58 ft at 11:15PM Jan 13, 2021Observed: 0.58 ft at 11:30PM Jan 13, 2021Observed: 0.58 ft at 11:45PM Jan 13, 2021Observed: 0.58 ft at 12:00AM Jan 14, 2021Observed: 0.58 ft at 12:15AM Jan 14, 2021Observed: 0.58 ft at 12:30AM Jan 14, 2021Observed: 0.58 ft at 12:45AM Jan 14, 2021Observed: 0.58 ft at 1:00AM Jan 14, 2021Observed: 0.57 ft at 1:15AM Jan 14, 2021Observed: 0.58 ft at 1:30AM Jan 14, 2021Observed: 0.57 ft at 1:45AM Jan 14, 2021Observed: 0.58 ft at 2:00AM Jan 14, 2021Observed: 0.57 ft at 2:15AM Jan 14, 2021Observed: 0.57 ft at 2:30AM Jan 14, 2021Observed: 0.58 ft at 2:45AM Jan 14, 2021Observed: 0.57 ft at 3:00AM Jan 14, 2021Observed: 0.57 ft at 3:15AM Jan 14, 2021Observed: 0.58 ft at 3:30AM Jan 14, 2021Observed: 0.57 ft at 3:45AM Jan 14, 2021Observed: 0.57 ft at 4:00AM Jan 14, 2021Observed: 0.58 ft at 4:15AM Jan 14, 2021Observed: 0.57 ft at 4:30AM Jan 14, 2021Observed: 0.58 ft at 4:45AM Jan 14, 2021Observed: 0.57 ft at 5:00AM Jan 14, 2021Observed: 0.57 ft at 5:15AM Jan 14, 2021Observed: 0.58 ft at 5:30AM Jan 14, 2021Observed: 0.57 ft at 5:45AM Jan 14, 2021Observed: 0.57 ft at 6:00AM Jan 14, 2021Observed: 0.58 ft at 6:15AM Jan 14, 2021Observed: 0.57 ft at 6:30AM Jan 14, 2021Observed: 0.58 ft at 6:45AM Jan 14, 2021Observed: 0.57 ft at 7:00AM Jan 14, 2021Observed: 0.57 ft at 7:15AM Jan 14, 2021Observed: 0.58 ft at 7:30AM Jan 14, 2021Observed: 0.57 ft at 7:45AM Jan 14, 2021Observed: 0.57 ft at 8:00AM Jan 14, 2021Observed: 0.57 ft at 8:15AM Jan 14, 2021Observed: 0.57 ft at 8:30AM Jan 14, 2021Observed: 0.57 ft at 8:45AM Jan 14, 2021Observed: 0.57 ft at 9:00AM Jan 14, 2021Observed: 0.57 ft at 9:15AM Jan 14, 2021Observed: 0.58 ft at 9:30AM Jan 14, 2021Observed: 0.57 ft at 9:45AM Jan 14, 2021Observed: 0.57 ft at 10:00AM Jan 14, 2021Observed: 0.58 ft at 10:15AM Jan 14, 2021Observed: 0.57 ft at 10:30AM Jan 14, 2021Observed: 0.57 ft at 10:45AM Jan 14, 2021Observed: 0.58 ft at 11:00AM Jan 14, 2021Observed: 0.58 ft at 11:15AM Jan 14, 2021Observed: 0.57 ft at 11:30AM Jan 14, 2021Observed: 0.58 ft at 11:45AM Jan 14, 2021Observed: 0.58 ft at 12:00PM Jan 14, 2021Observed: 0.58 ft at 12:15PM Jan 14, 2021Observed: 0.58 ft at 12:30PM Jan 14, 2021Observed: 0.58 ft at 12:45PM Jan 14, 2021Observed: 0.58 ft at 1:00PM Jan 14, 2021Observed: 0.58 ft at 1:15PM Jan 14, 2021Observed: 0.59 ft at 1:30PM Jan 14, 2021Observed: 0.58 ft at 1:45PM Jan 14, 2021Observed: 0.58 ft at 2:00PM Jan 14, 2021Observed: 0.59 ft at 2:15PM Jan 14, 2021Observed: 0.58 ft at 2:30PM Jan 14, 2021Observed: 0.58 ft at 2:45PM Jan 14, 2021Observed: 0.59 ft at 3:00PM Jan 14, 2021Observed: 0.59 ft at 3:15PM Jan 14, 2021Observed: 0.58 ft at 3:30PM Jan 14, 2021Observed: 0.59 ft at 3:45PM Jan 14, 2021Observed: 0.59 ft at 4:00PM Jan 14, 2021Observed: 0.59 ft at 4:15PM Jan 14, 2021Observed: 0.59 ft at 4:30PM Jan 14, 2021Observed: 0.59 ft at 4:45PM Jan 14, 2021Observed: 0.59 ft at 5:00PM Jan 14, 2021Observed: 0.59 ft at 5:15PM Jan 14, 2021Observed: 0.59 ft at 5:30PM Jan 14, 2021Observed: 0.59 ft at 5:45PM Jan 14, 2021Observed: 0.59 ft at 6:00PM Jan 14, 2021Observed: 0.59 ft at 6:15PM Jan 14, 2021Observed: 0.59 ft at 6:30PM Jan 14, 2021Observed: 0.59 ft at 6:45PM Jan 14, 2021Observed: 0.59 ft at 7:00PM Jan 14, 2021Observed: 0.59 ft at 7:15PM Jan 14, 2021Observed: 0.59 ft at 7:30PM Jan 14, 2021Observed: 0.59 ft at 7:45PM Jan 14, 2021Observed: 0.59 ft at 8:00PM Jan 14, 2021Observed: 0.59 ft at 8:15PM Jan 14, 2021Observed: 0.59 ft at 8:30PM Jan 14, 2021Observed: 0.59 ft at 8:45PM Jan 14, 2021Observed: 0.59 ft at 9:00PM Jan 14, 2021Observed: 0.59 ft at 9:15PM Jan 14, 2021Observed: 0.59 ft at 9:30PM Jan 14, 2021Highest Observation: 0.6 ft at 9:45PM Jan 14, 2021Observed: 0.59 ft at 10:00PM Jan 14, 2021Observed: 0.59 ft at 10:15PM Jan 14, 2021Observed: 0.59 ft at 10:30PM Jan 14, 2021Observed: 0.59 ft at 10:45PM Jan 14, 2021Observed: 0.59 ft at 11:00PM Jan 14, 2021Observed: 0.59 ft at 11:15PM Jan 14, 2021Observed: 0.59 ft at 11:30PM Jan 14, 2021Observed: 0.58 ft at 11:45PM Jan 14, 2021Observed: 0.59 ft at 12:00AM Jan 15, 2021Observed: 0.59 ft at 12:15AM Jan 15, 2021Observed: 0.59 ft at 12:30AM Jan 15, 2021Observed: 0.59 ft at 12:45AM Jan 15, 2021Observed: 0.59 ft at 1:00AM Jan 15, 2021Observed: 0.59 ft at 1:15AM Jan 15, 2021Observed: 0.59 ft at 1:30AM Jan 15, 2021Observed: 0.58 ft at 1:45AM Jan 15, 2021Observed: 0.59 ft at 2:00AM Jan 15, 2021Observed: 0.58 ft at 2:15AM Jan 15, 2021Observed: 0.59 ft at 2:30AM Jan 15, 2021Observed: 0.58 ft at 2:45AM Jan 15, 2021Observed: 0.58 ft at 3:00AM Jan 15, 2021Observed: 0.58 ft at 3:15AM Jan 15, 2021Observed: 0.58 ft at 3:30AM Jan 15, 2021Observed: 0.58 ft at 3:45AM Jan 15, 2021Observed: 0.58 ft at 4:00AM Jan 15, 2021Observed: 0.58 ft at 4:15AM Jan 15, 2021Observed: 0.59 ft at 4:30AM Jan 15, 2021Observed: 0.58 ft at 4:45AM Jan 15, 2021Observed: 0.58 ft at 5:00AM Jan 15, 2021Observed: 0.59 ft at 5:15AM Jan 15, 2021Observed: 0.58 ft at 5:30AM Jan 15, 2021Observed: 0.59 ft at 5:45AM Jan 15, 2021Observed: 0.58 ft at 6:00AM Jan 15, 2021Observed: 0.58 ft at 6:15AM Jan 15, 2021Observed: 0.59 ft at 6:30AM Jan 15, 2021Observed: 0.58 ft at 6:45AM Jan 15, 2021Observed: 0.58 ft at 7:00AM Jan 15, 2021Observed: 0.58 ft at 7:15AM Jan 15, 2021Observed: 0.58 ft at 7:30AM Jan 15, 2021Observed: 0.59 ft at 7:45AM Jan 15, 2021Observed: 0.58 ft at 8:00AM Jan 15, 2021Observed: 0.58 ft at 8:15AM Jan 15, 2021Observed: 0.58 ft at 8:30AM Jan 15, 2021Observed: 0.58 ft at 8:45AM Jan 15, 2021Observed: 0.58 ft at 9:00AM Jan 15, 2021Observed: 0.58 ft at 9:15AM Jan 15, 2021Observed: 0.58 ft at 9:30AM Jan 15, 2021Observed: 0.58 ft at 9:45AM Jan 15, 2021Observed: 0.58 ft at 10:00AM Jan 15, 2021Observed: 0.58 ft at 10:15AM Jan 15, 2021Observed: 0.58 ft at 10:30AM Jan 15, 2021Observed: 0.58 ft at 10:45AM Jan 15, 2021Observed: 0.58 ft at 11:00AM Jan 15, 2021Observed: 0.58 ft at 11:15AM Jan 15, 2021Observed: 0.58 ft at 11:30AM Jan 15, 2021Observed: 0.58 ft at 11:45AM Jan 15, 2021Observed: 0.59 ft at 12:00PM Jan 15, 2021Observed: 0.58 ft at 12:15PM Jan 15, 2021Observed: 0.58 ft at 12:30PM Jan 15, 2021Observed: 0.58 ft at 12:45PM Jan 15, 2021Observed: 0.59 ft at 1:00PM Jan 15, 2021Observed: 0.58 ft at 1:15PM Jan 15, 2021Observed: 0.58 ft at 1:30PM Jan 15, 2021Observed: 0.58 ft at 1:45PM Jan 15, 2021Observed: 0.58 ft at 2:00PM Jan 15, 2021Observed: 0.58 ft at 2:15PM Jan 15, 2021Observed: 0.58 ft at 2:30PM Jan 15, 2021Observed: 0.58 ft at 2:45PM Jan 15, 2021Observed: 0.58 ft at 3:00PM Jan 15, 2021Observed: 0.58 ft at 3:15PM Jan 15, 2021Observed: 0.57 ft at 3:30PM Jan 15, 2021Observed: 0.58 ft at 3:45PM Jan 15, 2021Observed: 0.58 ft at 4:00PM Jan 15, 2021Observed: 0.57 ft at 4:15PM Jan 15, 2021Observed: 0.58 ft at 4:30PM Jan 15, 2021Observed: 0.58 ft at 4:45PM Jan 15, 2021Observed: 0.57 ft at 5:00PM Jan 15, 2021Observed: 0.58 ft at 5:15PM Jan 15, 2021Observed: 0.58 ft at 5:30PM Jan 15, 2021Observed: 0.57 ft at 5:45PM Jan 15, 2021Observed: 0.58 ft at 6:00PM Jan 15, 2021Observed: 0.57 ft at 6:15PM Jan 15, 2021Observed: 0.57 ft at 6:30PM Jan 15, 2021Observed: 0.58 ft at 6:45PM Jan 15, 2021Observed: 0.58 ft at 7:00PM Jan 15, 2021Observed: 0.57 ft at 7:15PM Jan 15, 2021Observed: 0.58 ft at 7:30PM Jan 15, 2021Observed: 0.57 ft at 7:45PM Jan 15, 2021Observed: 0.57 ft at 8:00PM Jan 15, 2021Observed: 0.57 ft at 8:15PM Jan 15, 2021Observed: 0.57 ft at 8:30PM Jan 15, 2021Observed: 0.57 ft at 8:45PM Jan 15, 2021Observed: 0.57 ft at 9:00PM Jan 15, 2021Observed: 0.57 ft at 9:15PM Jan 15, 2021Observed: 0.57 ft at 9:30PM Jan 15, 2021Observed: 0.58 ft at 9:45PM Jan 15, 2021Observed: 0.57 ft at 10:00PM Jan 15, 2021Observed: 0.57 ft at 10:15PM Jan 15, 2021Observed: 0.58 ft at 10:30PM Jan 15, 2021Observed: 0.57 ft at 10:45PM Jan 15, 2021Observed: 0.57 ft at 11:00PM Jan 15, 2021Observed: 0.58 ft at 11:15PM Jan 15, 2021Observed: 0.57 ft at 11:30PM Jan 15, 2021Observed: 0.58 ft at 11:45PM Jan 15, 2021Observed: 0.57 ft at 12:00AM Jan 16, 2021Observed: 0.56 ft at 12:15AM Jan 16, 2021Observed: 0.57 ft at 12:30AM Jan 16, 2021Observed: 0.57 ft at 12:45AM Jan 16, 2021Observed: 0.56 ft at 1:00AM Jan 16, 2021Observed: 0.57 ft at 1:15AM Jan 16, 2021Observed: 0.57 ft at 1:30AM Jan 16, 2021Observed: 0.57 ft at 1:45AM Jan 16, 2021Observed: 0.58 ft at 2:00AM Jan 16, 2021Observed: 0.57 ft at 2:15AM Jan 16, 2021Observed: 0.57 ft at 2:30AM Jan 16, 2021Observed: 0.58 ft at 2:45AM Jan 16, 2021Observed: 0.58 ft at 3:00AM Jan 16, 2021Observed: 0.58 ft at 3:15AM Jan 16, 2021Observed: 0.58 ft at 3:30AM Jan 16, 2021Observed: 0.58 ft at 3:45AM Jan 16, 2021Observed: 0.59 ft at 4:00AM Jan 16, 2021Observed: 0.58 ft at 4:15AM Jan 16, 2021Observed: 0.58 ft at 4:30AM Jan 16, 2021Observed: 0.58 ft at 4:45AM Jan 16, 2021Observed: 0.58 ft at 5:00AM Jan 16, 2021Observed: 0.57 ft at 5:15AM Jan 16, 2021Observed: 0.58 ft at 5:30AM Jan 16, 2021Observed: 0.57 ft at 5:45AM Jan 16, 2021Observed: 0.57 ft at 6:00AM Jan 16, 2021Observed: 0.57 ft at 6:15AM Jan 16, 2021Observed: 0.57 ft at 6:30AM Jan 16, 2021Observed: 0.58 ft at 6:45AM Jan 16, 2021Observed: 0.58 ft at 7:00AM Jan 16, 2021Observed: 0.57 ft at 7:15AM Jan 16, 2021Observed: 0.58 ft at 7:30AM Jan 16, 2021Observed: 0.58 ft at 7:45AM Jan 16, 2021Observed: 0.58 ft at 8:00AM Jan 16, 2021Observed: 0.58 ft at 8:15AM Jan 16, 2021Observed: 0.58 ft at 8:30AM Jan 16, 2021Observed: 0.59 ft at 8:45AM Jan 16, 2021Observed: 0.58 ft at 9:00AM Jan 16, 2021Observed: 0.58 ft at 9:15AM Jan 16, 2021Observed: 0.59 ft at 9:30AM Jan 16, 2021Observed: 0.58 ft at 9:45AM Jan 16, 2021Observed: 0.58 ft at 10:00AM Jan 16, 2021Observed: 0.59 ft at 10:15AM Jan 16, 2021Observed: 0.59 ft at 10:30AM Jan 16, 2021Observed: 0.58 ft at 10:45AM Jan 16, 2021Observed: 0.59 ft at 11:00AM Jan 16, 2021Observed: 0.59 ft at 11:15AM Jan 16, 2021Observed: 0.59 ft at 11:30AM Jan 16, 2021Observed: 0.58 ft at 11:45AM Jan 16, 2021Observed: 0.59 ft at 12:00PM Jan 16, 2021Observed: 0.59 ft at 12:15PM Jan 16, 2021Observed: 0.59 ft at 12:30PM Jan 16, 2021Observed: 0.58 ft at 12:45PM Jan 16, 2021Observed: 0.59 ft at 1:00PM Jan 16, 2021Observed: 0.59 ft at 1:15PM Jan 16, 2021Observed: 0.58 ft at 1:30PM Jan 16, 2021Observed: 0.59 ft at 1:45PM Jan 16, 2021Observed: 0.59 ft at 2:00PM Jan 16, 2021Observed: 0.58 ft at 2:15PM Jan 16, 2021Observed: 0.59 ft at 2:30PM Jan 16, 2021Observed: 0.58 ft at 2:45PM Jan 16, 2021Observed: 0.58 ft at 3:00PM Jan 16, 2021Observed: 0.58 ft at 3:15PM Jan 16, 2021Observed: 0.58 ft at 3:30PM Jan 16, 2021Observed: 0.58 ft at 3:45PM Jan 16, 2021Observed: 0.58 ft at 4:00PM Jan 16, 2021Observed: 0.58 ft at 4:15PM Jan 16, 2021Observed: 0.58 ft at 4:30PM Jan 16, 2021Observed: 0.58 ft at 4:45PM Jan 16, 2021Observed: 0.58 ft at 5:00PM Jan 16, 2021Observed: 0.58 ft at 5:15PM Jan 16, 2021Observed: 0.57 ft at 5:30PM Jan 16, 2021Observed: 0.58 ft at 5:45PM Jan 16, 2021Observed: 0.57 ft at 6:00PM Jan 16, 2021Observed: 0.57 ft at 6:15PM Jan 16, 2021Observed: 0.57 ft at 6:30PM Jan 16, 2021Observed: 0.57 ft at 6:45PM Jan 16, 2021Observed: 0.58 ft at 7:00PM Jan 16, 2021Observed: 0.57 ft at 7:15PM Jan 16, 2021Observed: 0.57 ft at 7:30PM Jan 16, 2021Observed: 0.57 ft at 7:45PM Jan 16, 2021Observed: 0.57 ft at 8:00PM Jan 16, 2021Observed: 0.57 ft at 8:15PM Jan 16, 2021Observed: 0.57 ft at 8:30PM Jan 16, 2021Observed: 0.57 ft at 8:45PM Jan 16, 2021Observed: 0.57 ft at 9:00PM Jan 16, 2021Observed: 0.57 ft at 9:15PM Jan 16, 2021Observed: 0.57 ft at 9:30PM Jan 16, 2021Observed: 0.57 ft at 9:45PM Jan 16, 2021Observed: 0.57 ft at 10:00PM Jan 16, 2021Observed: 0.57 ft at 10:15PM Jan 16, 2021Observed: 0.57 ft at 10:30PM Jan 16, 2021Observed: 0.57 ft at 10:45PM Jan 16, 2021Observed: 0.57 ft at 11:00PM Jan 16, 2021Observed: 0.57 ft at 11:15PM Jan 16, 2021Highest Forecast: 0.6 ft 12:00AM Jan 17, 2021Highest Forecast: 0.6 ft 1:00AM Jan 17, 2021Highest Forecast: 0.6 ft 2:00AM Jan 17, 2021Highest Forecast: 0.6 ft 3:00AM Jan 17, 2021Highest Forecast: 0.6 ft 4:00AM Jan 17, 2021Highest Forecast: 0.6 ft 5:00AM Jan 17, 2021Highest Forecast: 0.6 ft 6:00AM Jan 17, 2021Highest Forecast: 0.6 ft 7:00AM Jan 17, 2021Highest Forecast: 0.6 ft 8:00AM Jan 17, 2021Highest Forecast: 0.6 ft 9:00AM Jan 17, 2021Highest Forecast: 0.6 ft 10:00AM Jan 17, 2021Highest Forecast: 0.6 ft 11:00AM Jan 17, 2021Highest Forecast: 0.6 ft 12:00PM Jan 17, 2021Highest Forecast: 0.6 ft 1:00PM Jan 17, 2021Highest Forecast: 0.6 ft 2:00PM Jan 17, 2021Highest Forecast: 0.6 ft 3:00PM Jan 17, 2021Highest Forecast: 0.6 ft 4:00PM Jan 17, 2021Highest Forecast: 0.6 ft 5:00PM Jan 17, 2021Highest Forecast: 0.6 ft 6:00PM Jan 17, 2021Highest Forecast: 0.6 ft 7:00PM Jan 17, 2021Highest Forecast: 0.6 ft 8:00PM Jan 17, 2021Highest Forecast: 0.6 ft 9:00PM Jan 17, 2021Highest Forecast: 0.6 ft 10:00PM Jan 17, 2021Highest Forecast: 0.6 ft 11:00PM Jan 17, 2021Highest Forecast: 0.6 ft 12:00AM Jan 18, 2021Highest Forecast: 0.6 ft 1:00AM Jan 18, 2021Highest Forecast: 0.6 ft 2:00AM Jan 18, 2021Highest Forecast: 0.6 ft 3:00AM Jan 18, 2021Highest Forecast: 0.6 ft 4:00AM Jan 18, 2021Highest Forecast: 0.6 ft 5:00AM Jan 18, 2021Highest Forecast: 0.6 ft 6:00AM Jan 18, 2021Highest Forecast: 0.6 ft 7:00AM Jan 18, 2021Highest Forecast: 0.6 ft 8:00AM Jan 18, 2021Highest Forecast: 0.6 ft 9:00AM Jan 18, 2021Highest Forecast: 0.6 ft 10:00AM Jan 18, 2021Highest Forecast: 0.6 ft 11:00AM Jan 18, 2021Highest Forecast: 0.6 ft 12:00PM Jan 18, 2021Highest Forecast: 0.6 ft 1:00PM Jan 18, 2021Highest Forecast: 0.6 ft 2:00PM Jan 18, 2021Highest Forecast: 0.6 ft 3:00PM Jan 18, 2021Highest Forecast: 0.6 ft 4:00PM Jan 18, 2021Highest Forecast: 0.6 ft 5:00PM Jan 18, 2021Highest Forecast: 0.6 ft 6:00PM Jan 18, 2021Highest Forecast: 0.6 ft 7:00PM Jan 18, 2021Highest Forecast: 0.6 ft 8:00PM Jan 18, 2021Highest Forecast: 0.6 ft 9:00PM Jan 18, 2021Highest Forecast: 0.6 ft 10:00PM Jan 18, 2021Highest Forecast: 0.6 ft 11:00PM Jan 18, 2021Highest Forecast: 0.6 ft 12:00AM Jan 19, 2021Highest Forecast: 0.6 ft 1:00AM Jan 19, 2021Highest Forecast: 0.6 ft 2:00AM Jan 19, 2021Highest Forecast: 0.6 ft 3:00AM Jan 19, 2021Highest Forecast: 0.6 ft 4:00AM Jan 19, 2021Highest Forecast: 0.6 ft 5:00AM Jan 19, 2021Highest Forecast: 0.6 ft 6:00AM Jan 19, 2021Highest Forecast: 0.6 ft 7:00AM Jan 19, 2021Highest Forecast: 0.6 ft 8:00AM Jan 19, 2021Highest Forecast: 0.6 ft 9:00AM Jan 19, 2021Highest Forecast: 0.6 ft 10:00AM Jan 19, 2021Highest Forecast: 0.6 ft 11:00AM Jan 19, 2021Highest Forecast: 0.6 ft 12:00PM Jan 19, 2021Highest Forecast: 0.6 ft 1:00PM Jan 19, 2021Highest Forecast: 0.6 ft 2:00PM Jan 19, 2021Highest Forecast: 0.6 ft 3:00PM Jan 19, 2021Highest Forecast: 0.6 ft 4:00PM Jan 19, 2021Highest Forecast: 0.6 ft 5:00PM Jan 19, 2021Highest Forecast: 0.6 ft 6:00PM Jan 19, 2021Highest Forecast: 0.6 ft 7:00PM Jan 19, 2021Highest Forecast: 0.6 ft 8:00PM Jan 19, 2021Highest Forecast: 0.6 ft 9:00PM Jan 19, 2021Highest Forecast: 0.6 ft 10:00PM Jan 19, 2021Highest Forecast: 0.6 ft 11:00PM Jan 19, 2021Highest Forecast: 0.6 ft 12:00AM Jan 20, 2021Highest Forecast: 0.6 ft 1:00AM Jan 20, 2021Highest Forecast: 0.6 ft 2:00AM Jan 20, 2021Highest Forecast: 0.6 ft 3:00AM Jan 20, 2021Highest Forecast: 0.6 ft 4:00AM Jan 20, 2021Highest Forecast: 0.6 ft 5:00AM Jan 20, 2021Highest Forecast: 0.6 ft 6:00AM Jan 20, 2021Highest Forecast: 0.6 ft 7:00AM Jan 20, 2021Highest Forecast: 0.6 ft 8:00AM Jan 20, 2021Highest Forecast: 0.6 ft 9:00AM Jan 20, 2021Highest Forecast: 0.6 ft 10:00AM Jan 20, 2021Highest Forecast: 0.6 ft 11:00AM Jan 20, 2021Highest Forecast: 0.6 ft 12:00PM Jan 20, 2021Highest Forecast: 0.6 ft 1:00PM Jan 20, 2021Highest Forecast: 0.6 ft 2:00PM Jan 20, 2021Highest Forecast: 0.6 ft 3:00PM Jan 20, 2021Highest Forecast: 0.6 ft 4:00PM Jan 20, 2021Highest Forecast: 0.6 ft 5:00PM Jan 20, 2021Highest Forecast: 0.6 ft 6:00PM Jan 20, 2021Highest Forecast: 0.6 ft 7:00PM Jan 20, 2021Highest Forecast: 0.6 ft 8:00PM Jan 20, 2021Highest Forecast: 0.6 ft 9:00PM Jan 20, 2021Highest Forecast: 0.6 ft 10:00PM Jan 20, 2021Highest Forecast: 0.6 ft 11:00PM Jan 20, 2021Highest Forecast: 0.6 ft 12:00AM Jan 21, 2021Highest Forecast: 0.6 ft 1:00AM Jan 21, 2021Highest Forecast: 0.6 ft 2:00AM Jan 21, 2021Highest Forecast: 0.6 ft 3:00AM Jan 21, 2021Highest Forecast: 0.6 ft 4:00AM Jan 21, 2021USGS--Water Resources of the United StatesSHEC1(plotting HGIRG) Graph Created (11:30PM Jan 16, 2021)ObservedForecast (issued 8:16AM Jan 16)Latest observed value: 0.57 ft at 11:15 PM PST 16-Jan-2021. Flood Stage is 18 ft
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Tabular Data (UTC)
Tabular Data (PST)
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NOTE: Forecasts for the Napa River near St. Helena are issued routinely year-round.
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Downstream Gauge Downstream Gauge - near Napa
Flood Categories (in feet)
Major Flood Stage: 22
Moderate Flood Stage: 20
Flood Stage: 18
Action Stage: 16
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.
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24 Disastrous Flooding. Widespread flooding across upper Napa Valley with travel essentially impossible. The peak water level during the flood of 12/31/2005 measured 23.6 feet.
22 Major Flood Stage. Major flooding throughout the upper Napa Valley with most roads inundated, making travel extremely difficult and unsafe.
20 Moderate Flood Stage. Moderate flooding of the lower portions of Silverado Trail along the reach. Inundation of low lying residential areas along the east river bank in the vicinity of Pope Street Bridge. Secondary and many primary roads inundated; most major cross roads inundated and unsafe to pass.
18 Minor Flood Stage. Minor flooding of low lying agricultural areas along river begins. Low lying rural residential areas immediately adjacent to the river and some secondary roads affected.
16 Monitor Stage. WFO Monterey may issue a Flood Watch-based products to cover Napa Valley regional flood potential at this stage.
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Latitude: 38.511389° N, Longitude: 122.454722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 18 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 29 193.21 ft 209.71 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:

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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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Page last modified: 2-Nov-2020 7:27 PM
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