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Hydrograph River at a Glance Download
Napa River near St. Helena Stage (ft)Flow (cfs)Observed: -0.26 ft at 3:30PM Oct 11, 2021Observed: -0.26 ft at 3:45PM Oct 11, 2021Observed: -0.27 ft at 4:00PM Oct 11, 2021Observed: -0.26 ft at 4:15PM Oct 11, 2021Observed: -0.27 ft at 4:30PM Oct 11, 2021Observed: -0.26 ft at 4:45PM Oct 11, 2021Observed: -0.27 ft at 5:00PM Oct 11, 2021Observed: -0.26 ft at 5:15PM Oct 11, 2021Observed: -0.27 ft at 5:30PM Oct 11, 2021Observed: -0.26 ft at 5:45PM Oct 11, 2021Observed: -0.26 ft at 6:00PM Oct 11, 2021Observed: -0.26 ft at 6:15PM Oct 11, 2021Observed: -0.27 ft at 6:30PM Oct 11, 2021Observed: -0.26 ft at 6:45PM Oct 11, 2021Observed: -0.26 ft at 7:00PM Oct 11, 2021Observed: -0.26 ft at 7:15PM Oct 11, 2021Observed: -0.27 ft at 7:30PM Oct 11, 2021Observed: -0.26 ft at 7:45PM Oct 11, 2021Observed: -0.26 ft at 8:00PM Oct 11, 2021Observed: -0.26 ft at 8:15PM Oct 11, 2021Observed: -0.27 ft at 8:30PM Oct 11, 2021Observed: -0.26 ft at 8:45PM Oct 11, 2021Observed: -0.26 ft at 9:00PM Oct 11, 2021Observed: -0.26 ft at 9:15PM Oct 11, 2021Observed: -0.27 ft at 9:30PM Oct 11, 2021Observed: -0.26 ft at 9:45PM Oct 11, 2021Observed: -0.26 ft at 10:00PM Oct 11, 2021Observed: -0.26 ft at 10:15PM Oct 11, 2021Observed: -0.26 ft at 10:30PM Oct 11, 2021Observed: -0.26 ft at 10:45PM Oct 11, 2021Observed: -0.26 ft at 11:00PM Oct 11, 2021Observed: -0.26 ft at 11:15PM Oct 11, 2021Observed: -0.26 ft at 11:30PM Oct 11, 2021Observed: -0.26 ft at 11:45PM Oct 11, 2021Observed: -0.26 ft at 12:00AM Oct 12, 2021Observed: -0.26 ft at 12:15AM Oct 12, 2021Observed: -0.26 ft at 12:30AM Oct 12, 2021Observed: -0.27 ft at 12:45AM Oct 12, 2021Observed: -0.26 ft at 1:00AM Oct 12, 2021Observed: -0.26 ft at 1:15AM Oct 12, 2021Observed: -0.26 ft at 1:30AM Oct 12, 2021Observed: -0.27 ft at 1:45AM Oct 12, 2021Observed: -0.26 ft at 2:00AM Oct 12, 2021Observed: -0.26 ft at 2:15AM Oct 12, 2021Observed: -0.26 ft at 2:30AM Oct 12, 2021Observed: -0.27 ft at 2:45AM Oct 12, 2021Observed: -0.26 ft at 3:00AM Oct 12, 2021Observed: -0.26 ft at 3:15AM Oct 12, 2021Observed: -0.26 ft at 3:30AM Oct 12, 2021Observed: -0.27 ft at 3:45AM Oct 12, 2021Observed: -0.26 ft at 4:00AM Oct 12, 2021Observed: -0.26 ft at 4:15AM Oct 12, 2021Observed: -0.26 ft at 4:30AM Oct 12, 2021Observed: -0.26 ft at 4:45AM Oct 12, 2021Observed: -0.26 ft at 5:00AM Oct 12, 2021Observed: -0.26 ft at 5:15AM Oct 12, 2021Observed: -0.26 ft at 5:30AM Oct 12, 2021Observed: -0.26 ft at 5:45AM Oct 12, 2021Observed: -0.26 ft at 6:00AM Oct 12, 2021Observed: -0.26 ft at 6:15AM Oct 12, 2021Observed: -0.26 ft at 6:30AM Oct 12, 2021Observed: -0.26 ft at 6:45AM Oct 12, 2021Observed: -0.26 ft at 7:00AM Oct 12, 2021Observed: -0.26 ft at 7:15AM Oct 12, 2021Observed: -0.26 ft at 7:30AM Oct 12, 2021Observed: -0.26 ft at 7:45AM Oct 12, 2021Observed: -0.26 ft at 8:00AM Oct 12, 2021Observed: -0.26 ft at 8:15AM Oct 12, 2021Observed: -0.26 ft at 8:30AM Oct 12, 2021Observed: -0.26 ft at 8:45AM Oct 12, 2021Observed: -0.26 ft at 9:00AM Oct 12, 2021Observed: -0.26 ft at 9:15AM Oct 12, 2021Observed: -0.26 ft at 9:30AM Oct 12, 2021Observed: -0.26 ft at 9:45AM Oct 12, 2021Observed: -0.26 ft at 10:00AM Oct 12, 2021Observed: -0.27 ft at 10:15AM Oct 12, 2021Observed: -0.27 ft at 10:30AM Oct 12, 2021Observed: -0.26 ft at 10:45AM Oct 12, 2021Observed: -0.26 ft at 11:00AM Oct 12, 2021Observed: -0.26 ft at 11:15AM Oct 12, 2021Observed: -0.26 ft at 11:30AM Oct 12, 2021Observed: -0.27 ft at 11:45AM Oct 12, 2021Observed: -0.27 ft at 12:00PM Oct 12, 2021Observed: -0.26 ft at 12:15PM Oct 12, 2021Observed: -0.26 ft at 12:30PM Oct 12, 2021Observed: -0.26 ft at 12:45PM Oct 12, 2021Observed: -0.26 ft at 1:00PM Oct 12, 2021Observed: -0.27 ft at 1:15PM Oct 12, 2021Observed: -0.26 ft at 1:30PM Oct 12, 2021Observed: -0.26 ft at 1:45PM Oct 12, 2021Observed: -0.26 ft at 2:00PM Oct 12, 2021Observed: -0.26 ft at 2:15PM Oct 12, 2021Observed: -0.26 ft at 2:30PM Oct 12, 2021Observed: -0.26 ft at 2:45PM Oct 12, 2021Observed: -0.26 ft at 3:00PM Oct 12, 2021Observed: -0.26 ft at 3:15PM Oct 12, 2021Observed: -0.26 ft at 3:30PM Oct 12, 2021Observed: -0.26 ft at 3:45PM Oct 12, 2021Observed: -0.27 ft at 4:00PM Oct 12, 2021Observed: -0.26 ft at 4:15PM Oct 12, 2021Observed: -0.26 ft at 4:30PM Oct 12, 2021Observed: -0.26 ft at 4:45PM Oct 12, 2021Observed: -0.26 ft at 5:00PM Oct 12, 2021Observed: -0.26 ft at 5:15PM Oct 12, 2021Observed: -0.26 ft at 5:30PM Oct 12, 2021Observed: -0.26 ft at 5:45PM Oct 12, 2021Observed: -0.26 ft at 6:00PM Oct 12, 2021Observed: -0.26 ft at 6:15PM Oct 12, 2021Observed: -0.26 ft at 6:30PM Oct 12, 2021Observed: -0.27 ft at 6:45PM Oct 12, 2021Observed: -0.26 ft at 7:00PM Oct 12, 2021Observed: -0.26 ft at 7:15PM Oct 12, 2021Observed: -0.26 ft at 7:30PM Oct 12, 2021Observed: -0.26 ft at 7:45PM Oct 12, 2021Observed: -0.26 ft at 8:00PM Oct 12, 2021Observed: -0.26 ft at 8:15PM Oct 12, 2021Observed: -0.26 ft at 8:30PM Oct 12, 2021Observed: -0.26 ft at 8:45PM Oct 12, 2021Observed: -0.26 ft at 9:00PM Oct 12, 2021Observed: -0.26 ft at 9:15PM Oct 12, 2021Observed: -0.26 ft at 9:30PM Oct 12, 2021Observed: -0.26 ft at 9:45PM Oct 12, 2021Observed: -0.26 ft at 10:00PM Oct 12, 2021Observed: -0.26 ft at 10:15PM Oct 12, 2021Observed: -0.26 ft at 10:30PM Oct 12, 2021Observed: -0.26 ft at 10:45PM Oct 12, 2021Observed: -0.26 ft at 11:00PM Oct 12, 2021Observed: -0.26 ft at 11:15PM Oct 12, 2021Observed: -0.26 ft at 11:30PM Oct 12, 2021Observed: -0.26 ft at 11:45PM Oct 12, 2021Observed: -0.26 ft at 12:00AM Oct 13, 2021Observed: -0.26 ft at 12:15AM Oct 13, 2021Observed: -0.26 ft at 12:30AM Oct 13, 2021Observed: -0.26 ft at 12:45AM Oct 13, 2021Observed: -0.26 ft at 1:00AM Oct 13, 2021Observed: -0.26 ft at 1:15AM Oct 13, 2021Observed: -0.26 ft at 1:30AM Oct 13, 2021Observed: -0.26 ft at 1:45AM Oct 13, 2021Observed: -0.26 ft at 2:00AM Oct 13, 2021Observed: -0.26 ft at 2:15AM Oct 13, 2021Observed: -0.26 ft at 2:30AM Oct 13, 2021Observed: -0.26 ft at 2:45AM Oct 13, 2021Observed: -0.26 ft at 3:00AM Oct 13, 2021Observed: -0.26 ft at 3:15AM Oct 13, 2021Observed: -0.26 ft at 3:30AM Oct 13, 2021Observed: -0.26 ft at 3:45AM Oct 13, 2021Observed: -0.26 ft at 4:00AM Oct 13, 2021Observed: -0.26 ft at 4:15AM Oct 13, 2021Observed: -0.26 ft at 4:30AM Oct 13, 2021Observed: -0.26 ft at 4:45AM Oct 13, 2021Observed: -0.26 ft at 5:00AM Oct 13, 2021Observed: -0.26 ft at 5:15AM Oct 13, 2021Observed: -0.26 ft at 5:30AM Oct 13, 2021Observed: -0.26 ft at 5:45AM Oct 13, 2021Observed: -0.26 ft at 6:00AM Oct 13, 2021Observed: -0.26 ft at 6:15AM Oct 13, 2021Observed: -0.26 ft at 6:30AM Oct 13, 2021Observed: -0.26 ft at 6:45AM Oct 13, 2021Observed: -0.26 ft at 7:00AM Oct 13, 2021Observed: -0.26 ft at 7:15AM Oct 13, 2021Observed: -0.26 ft at 7:30AM Oct 13, 2021Observed: -0.26 ft at 7:45AM Oct 13, 2021Observed: -0.26 ft at 8:00AM Oct 13, 2021Observed: -0.26 ft at 8:15AM Oct 13, 2021Observed: -0.26 ft at 8:30AM Oct 13, 2021Observed: -0.26 ft at 8:45AM Oct 13, 2021Observed: -0.26 ft at 9:00AM Oct 13, 2021Observed: -0.26 ft at 9:15AM Oct 13, 2021Observed: -0.26 ft at 9:30AM Oct 13, 2021Observed: -0.26 ft at 9:45AM Oct 13, 2021Observed: -0.27 ft at 10:00AM Oct 13, 2021Observed: -0.26 ft at 10:15AM Oct 13, 2021Observed: -0.26 ft at 10:30AM Oct 13, 2021Observed: -0.26 ft at 10:45AM Oct 13, 2021Observed: -0.26 ft at 11:00AM Oct 13, 2021Observed: -0.26 ft at 11:15AM Oct 13, 2021Observed: -0.27 ft at 11:30AM Oct 13, 2021Observed: -0.26 ft at 11:45AM Oct 13, 2021Observed: -0.26 ft at 12:00PM Oct 13, 2021Observed: -0.26 ft at 12:15PM Oct 13, 2021Observed: -0.26 ft at 12:30PM Oct 13, 2021Observed: -0.26 ft at 12:45PM Oct 13, 2021Observed: -0.26 ft at 1:00PM Oct 13, 2021Observed: -0.26 ft at 1:15PM Oct 13, 2021Observed: -0.26 ft at 1:30PM Oct 13, 2021Observed: -0.26 ft at 1:45PM Oct 13, 2021Observed: -0.26 ft at 2:00PM Oct 13, 2021Observed: -0.27 ft at 2:15PM Oct 13, 2021Observed: -0.26 ft at 2:30PM Oct 13, 2021Observed: -0.26 ft at 2:45PM Oct 13, 2021Observed: -0.26 ft at 3:00PM Oct 13, 2021Observed: -0.26 ft at 3:15PM Oct 13, 2021Observed: -0.26 ft at 3:30PM Oct 13, 2021Observed: -0.26 ft at 3:45PM Oct 13, 2021Observed: -0.26 ft at 4:00PM Oct 13, 2021Observed: -0.26 ft at 4:15PM Oct 13, 2021Observed: -0.26 ft at 4:30PM Oct 13, 2021Observed: -0.26 ft at 4:45PM Oct 13, 2021Observed: -0.26 ft at 5:00PM Oct 13, 2021Observed: -0.26 ft at 5:15PM Oct 13, 2021Observed: -0.27 ft at 5:30PM Oct 13, 2021Observed: -0.26 ft at 5:45PM Oct 13, 2021Observed: -0.26 ft at 6:00PM Oct 13, 2021Observed: -0.26 ft at 6:15PM Oct 13, 2021Observed: -0.26 ft at 6:30PM Oct 13, 2021Observed: -0.26 ft at 6:45PM Oct 13, 2021Observed: -0.26 ft at 7:00PM Oct 13, 2021Observed: -0.26 ft at 7:15PM Oct 13, 2021Observed: -0.26 ft at 7:30PM Oct 13, 2021Observed: -0.26 ft at 7:45PM Oct 13, 2021Observed: -0.26 ft at 8:00PM Oct 13, 2021Observed: -0.26 ft at 8:15PM Oct 13, 2021Observed: -0.26 ft at 8:30PM Oct 13, 2021Observed: -0.26 ft at 8:45PM Oct 13, 2021Observed: -0.26 ft at 9:00PM Oct 13, 2021Observed: -0.26 ft at 9:15PM Oct 13, 2021Observed: -0.26 ft at 9:30PM Oct 13, 2021Observed: -0.26 ft at 9:45PM Oct 13, 2021Observed: -0.26 ft at 10:00PM Oct 13, 2021Observed: -0.26 ft at 10:15PM Oct 13, 2021Observed: -0.26 ft at 10:30PM Oct 13, 2021Observed: -0.26 ft at 10:45PM Oct 13, 2021Observed: -0.26 ft at 11:00PM Oct 13, 2021Observed: -0.26 ft at 11:15PM Oct 13, 2021Observed: -0.26 ft at 11:30PM Oct 13, 2021Observed: -0.26 ft at 11:45PM Oct 13, 2021Observed: -0.26 ft at 12:00AM Oct 14, 2021Observed: -0.26 ft at 12:15AM Oct 14, 2021Observed: -0.26 ft at 12:30AM Oct 14, 2021Observed: -0.26 ft at 12:45AM Oct 14, 2021Observed: -0.26 ft at 1:00AM Oct 14, 2021Observed: -0.26 ft at 1:15AM Oct 14, 2021Observed: -0.26 ft at 1:30AM Oct 14, 2021Observed: -0.26 ft at 1:45AM Oct 14, 2021Observed: -0.26 ft at 2:00AM Oct 14, 2021Observed: -0.26 ft at 2:15AM Oct 14, 2021Observed: -0.26 ft at 2:30AM Oct 14, 2021Observed: -0.26 ft at 2:45AM Oct 14, 2021Observed: -0.26 ft at 3:00AM Oct 14, 2021Observed: -0.26 ft at 3:15AM Oct 14, 2021Observed: -0.26 ft at 3:30AM Oct 14, 2021Observed: -0.26 ft at 3:45AM Oct 14, 2021Observed: -0.26 ft at 4:00AM Oct 14, 2021Observed: -0.26 ft at 4:15AM Oct 14, 2021Observed: -0.27 ft at 4:30AM Oct 14, 2021Observed: -0.26 ft at 4:45AM Oct 14, 2021Observed: -0.26 ft at 5:00AM Oct 14, 2021Observed: -0.26 ft at 5:15AM Oct 14, 2021Observed: -0.26 ft at 5:30AM Oct 14, 2021Observed: -0.26 ft at 5:45AM Oct 14, 2021Observed: -0.26 ft at 6:00AM Oct 14, 2021Observed: -0.26 ft at 6:15AM Oct 14, 2021Observed: -0.26 ft at 6:30AM Oct 14, 2021Observed: -0.26 ft at 6:45AM Oct 14, 2021Observed: -0.26 ft at 7:00AM Oct 14, 2021Observed: -0.26 ft at 7:15AM Oct 14, 2021Observed: -0.26 ft at 7:30AM Oct 14, 2021Observed: -0.26 ft at 7:45AM Oct 14, 2021Observed: -0.26 ft at 8:00AM Oct 14, 2021Observed: -0.26 ft at 8:15AM Oct 14, 2021Observed: -0.26 ft at 8:30AM Oct 14, 2021Observed: -0.26 ft at 8:45AM Oct 14, 2021Observed: -0.27 ft at 9:00AM Oct 14, 2021Observed: -0.26 ft at 9:15AM Oct 14, 2021Observed: -0.26 ft at 9:30AM Oct 14, 2021Observed: -0.26 ft at 9:45AM Oct 14, 2021Observed: -0.27 ft at 10:00AM Oct 14, 2021Observed: -0.26 ft at 10:15AM Oct 14, 2021Observed: -0.26 ft at 10:30AM Oct 14, 2021Observed: -0.26 ft at 10:45AM Oct 14, 2021Observed: -0.26 ft at 11:00AM Oct 14, 2021Observed: -0.26 ft at 11:15AM Oct 14, 2021Observed: -0.26 ft at 11:30AM Oct 14, 2021Observed: -0.26 ft at 11:45AM Oct 14, 2021Observed: -0.26 ft at 12:00PM Oct 14, 2021Observed: -0.26 ft at 12:15PM Oct 14, 2021Observed: -0.27 ft at 12:30PM Oct 14, 2021Observed: -0.26 ft at 12:45PM Oct 14, 2021Observed: -0.26 ft at 1:00PM Oct 14, 2021Observed: -0.26 ft at 1:15PM Oct 14, 2021Observed: -0.26 ft at 1:30PM Oct 14, 2021Observed: -0.26 ft at 1:45PM Oct 14, 2021Observed: -0.27 ft at 2:00PM Oct 14, 2021Observed: -0.26 ft at 2:15PM Oct 14, 2021Observed: -0.26 ft at 2:30PM Oct 14, 2021Observed: -0.26 ft at 2:45PM Oct 14, 2021Observed: -0.26 ft at 3:00PM Oct 14, 2021Observed: -0.27 ft at 3:15PM Oct 14, 2021Observed: -0.26 ft at 3:30PM Oct 14, 2021Observed: -0.26 ft at 3:45PM Oct 14, 2021Observed: -0.26 ft at 4:00PM Oct 14, 2021Observed: -0.26 ft at 4:15PM Oct 14, 2021Observed: -0.27 ft at 4:30PM Oct 14, 2021Observed: -0.26 ft at 4:45PM Oct 14, 2021Observed: -0.26 ft at 5:00PM Oct 14, 2021Observed: -0.27 ft at 5:15PM Oct 14, 2021Observed: -0.26 ft at 5:30PM Oct 14, 2021Observed: -0.26 ft at 5:45PM Oct 14, 2021Observed: -0.26 ft at 6:00PM Oct 14, 2021Observed: -0.26 ft at 6:15PM Oct 14, 2021Observed: -0.26 ft at 6:30PM Oct 14, 2021Observed: -0.26 ft at 6:45PM Oct 14, 2021Observed: -0.27 ft at 7:00PM Oct 14, 2021Observed: -0.26 ft at 7:15PM Oct 14, 2021Observed: -0.26 ft at 7:30PM Oct 14, 2021Observed: -0.26 ft at 7:45PM Oct 14, 2021Observed: -0.27 ft at 8:00PM Oct 14, 2021Observed: -0.26 ft at 8:15PM Oct 14, 2021Observed: -0.26 ft at 8:30PM Oct 14, 2021Observed: -0.26 ft at 8:45PM Oct 14, 2021Observed: -0.27 ft at 9:00PM Oct 14, 2021Observed: -0.26 ft at 9:15PM Oct 14, 2021Observed: -0.26 ft at 9:30PM Oct 14, 2021Observed: -0.26 ft at 9:45PM Oct 14, 2021Observed: -0.27 ft at 10:00PM Oct 14, 2021Observed: -0.26 ft at 10:15PM Oct 14, 2021Observed: -0.26 ft at 10:30PM Oct 14, 2021Observed: -0.26 ft at 10:45PM Oct 14, 2021Observed: -0.26 ft at 11:00PM Oct 14, 2021Observed: -0.26 ft at 11:15PM Oct 14, 2021Observed: -0.26 ft at 11:30PM Oct 14, 2021Observed: -0.26 ft at 11:45PM Oct 14, 2021Observed: -0.26 ft at 12:00AM Oct 15, 2021Observed: -0.26 ft at 12:15AM Oct 15, 2021Observed: -0.26 ft at 12:30AM Oct 15, 2021Observed: -0.26 ft at 12:45AM Oct 15, 2021Observed: -0.26 ft at 1:00AM Oct 15, 2021Observed: -0.26 ft at 1:15AM Oct 15, 2021Observed: -0.26 ft at 1:30AM Oct 15, 2021Observed: -0.26 ft at 1:45AM Oct 15, 2021Observed: -0.26 ft at 2:00AM Oct 15, 2021Observed: -0.26 ft at 2:15AM Oct 15, 2021Observed: -0.26 ft at 2:30AM Oct 15, 2021Observed: -0.26 ft at 2:45AM Oct 15, 2021Observed: -0.26 ft at 3:00AM Oct 15, 2021Observed: -0.26 ft at 3:15AM Oct 15, 2021Observed: -0.26 ft at 3:30AM Oct 15, 2021Observed: -0.26 ft at 3:45AM Oct 15, 2021Observed: -0.26 ft at 4:00AM Oct 15, 2021Observed: -0.26 ft at 4:15AM Oct 15, 2021Observed: -0.26 ft at 4:30AM Oct 15, 2021Observed: -0.26 ft at 4:45AM Oct 15, 2021Observed: -0.26 ft at 5:00AM Oct 15, 2021Observed: -0.26 ft at 5:15AM Oct 15, 2021Observed: -0.26 ft at 5:30AM Oct 15, 2021Observed: -0.26 ft at 5:45AM Oct 15, 2021Observed: -0.26 ft at 6:00AM Oct 15, 2021Observed: -0.26 ft at 6:15AM Oct 15, 2021Observed: -0.26 ft at 6:30AM Oct 15, 2021Observed: -0.26 ft at 6:45AM Oct 15, 2021Observed: -0.26 ft at 7:00AM Oct 15, 2021Observed: -0.26 ft at 7:15AM Oct 15, 2021Observed: -0.26 ft at 7:30AM Oct 15, 2021Observed: -0.26 ft at 7:45AM Oct 15, 2021Observed: -0.26 ft at 8:00AM Oct 15, 2021Observed: -0.27 ft at 8:15AM Oct 15, 2021Observed: -0.26 ft at 8:30AM Oct 15, 2021Observed: -0.26 ft at 8:45AM Oct 15, 2021Observed: -0.26 ft at 9:00AM Oct 15, 2021Observed: -0.26 ft at 9:15AM Oct 15, 2021Observed: -0.26 ft at 9:30AM Oct 15, 2021Observed: -0.26 ft at 9:45AM Oct 15, 2021Observed: -0.26 ft at 10:00AM Oct 15, 2021Observed: -0.26 ft at 10:15AM Oct 15, 2021Observed: -0.26 ft at 10:30AM Oct 15, 2021Observed: -0.26 ft at 10:45AM Oct 15, 2021Observed: -0.26 ft at 11:00AM Oct 15, 2021Observed: -0.26 ft at 11:15AM Oct 15, 2021Observed: -0.26 ft at 11:30AM Oct 15, 2021Observed: -0.26 ft at 11:45AM Oct 15, 2021Observed: -0.26 ft at 12:00PM Oct 15, 2021Observed: -0.26 ft at 12:15PM Oct 15, 2021Observed: -0.26 ft at 12:30PM Oct 15, 2021Observed: -0.26 ft at 12:45PM Oct 15, 2021Observed: -0.27 ft at 1:00PM Oct 15, 2021Observed: -0.26 ft at 1:15PM Oct 15, 2021Observed: -0.26 ft at 1:30PM Oct 15, 2021Observed: -0.26 ft at 1:45PM Oct 15, 2021Observed: -0.26 ft at 2:00PM Oct 15, 2021Observed: -0.27 ft at 2:15PM Oct 15, 2021Observed: -0.26 ft at 2:30PM Oct 15, 2021Observed: -0.26 ft at 2:45PM Oct 15, 2021Observed: -0.26 ft at 3:00PM Oct 15, 2021Observed: -0.26 ft at 3:15PM Oct 15, 2021Observed: -0.26 ft at 3:30PM Oct 15, 2021Observed: -0.26 ft at 3:45PM Oct 15, 2021Observed: -0.26 ft at 4:00PM Oct 15, 2021Observed: -0.26 ft at 4:15PM Oct 15, 2021Observed: -0.26 ft at 4:30PM Oct 15, 2021Observed: -0.26 ft at 4:45PM Oct 15, 2021Observed: -0.26 ft at 5:00PM Oct 15, 2021Observed: -0.26 ft at 5:15PM Oct 15, 2021Observed: -0.26 ft at 5:30PM Oct 15, 2021Observed: -0.26 ft at 5:45PM Oct 15, 2021Observed: -0.26 ft at 6:00PM Oct 15, 2021Observed: -0.27 ft at 6:15PM Oct 15, 2021Observed: -0.26 ft at 6:30PM Oct 15, 2021Observed: -0.26 ft at 6:45PM Oct 15, 2021Observed: -0.26 ft at 7:00PM Oct 15, 2021Observed: -0.26 ft at 7:15PM Oct 15, 2021Observed: -0.26 ft at 7:30PM Oct 15, 2021Observed: -0.26 ft at 7:45PM Oct 15, 2021Observed: -0.27 ft at 8:00PM Oct 15, 2021Observed: -0.26 ft at 8:15PM Oct 15, 2021Observed: -0.26 ft at 8:30PM Oct 15, 2021Observed: -0.26 ft at 8:45PM Oct 15, 2021Observed: -0.26 ft at 9:00PM Oct 15, 2021Observed: -0.26 ft at 9:15PM Oct 15, 2021Observed: -0.26 ft at 9:30PM Oct 15, 2021Observed: -0.26 ft at 9:45PM Oct 15, 2021Observed: -0.26 ft at 10:00PM Oct 15, 2021Observed: -0.26 ft at 10:15PM Oct 15, 2021Observed: -0.26 ft at 10:30PM Oct 15, 2021Observed: -0.26 ft at 10:45PM Oct 15, 2021Observed: -0.26 ft at 11:00PM Oct 15, 2021Observed: -0.26 ft at 11:15PM Oct 15, 2021Observed: -0.26 ft at 11:30PM Oct 15, 2021Observed: -0.26 ft at 11:45PM Oct 15, 2021Observed: -0.26 ft at 12:00AM Oct 16, 2021Observed: -0.26 ft at 12:15AM Oct 16, 2021Observed: -0.26 ft at 12:30AM Oct 16, 2021Observed: -0.26 ft at 12:45AM Oct 16, 2021Observed: -0.26 ft at 1:00AM Oct 16, 2021Observed: -0.26 ft at 1:15AM Oct 16, 2021Observed: -0.26 ft at 1:30AM Oct 16, 2021Observed: -0.26 ft at 1:45AM Oct 16, 2021Observed: -0.26 ft at 2:00AM Oct 16, 2021Observed: -0.26 ft at 2:15AM Oct 16, 2021Observed: -0.26 ft at 2:30AM Oct 16, 2021Observed: -0.26 ft at 2:45AM Oct 16, 2021Observed: -0.26 ft at 3:00AM Oct 16, 2021Observed: -0.26 ft at 3:15AM Oct 16, 2021Observed: -0.26 ft at 3:30AM Oct 16, 2021Observed: -0.26 ft at 3:45AM Oct 16, 2021Observed: -0.26 ft at 4:00AM Oct 16, 2021Observed: -0.26 ft at 4:15AM Oct 16, 2021Observed: -0.26 ft at 4:30AM Oct 16, 2021Observed: -0.26 ft at 4:45AM Oct 16, 2021Observed: -0.26 ft at 5:00AM Oct 16, 2021Observed: -0.26 ft at 5:15AM Oct 16, 2021Observed: -0.26 ft at 5:30AM Oct 16, 2021Observed: -0.26 ft at 5:45AM Oct 16, 2021Observed: -0.26 ft at 6:00AM Oct 16, 2021Observed: -0.26 ft at 6:15AM Oct 16, 2021Observed: -0.26 ft at 6:30AM Oct 16, 2021Observed: -0.26 ft at 6:45AM Oct 16, 2021Observed: -0.26 ft at 7:00AM Oct 16, 2021Observed: -0.26 ft at 7:15AM Oct 16, 2021Observed: -0.26 ft at 7:30AM Oct 16, 2021Observed: -0.26 ft at 7:45AM Oct 16, 2021Observed: -0.26 ft at 8:00AM Oct 16, 2021Observed: -0.26 ft at 8:15AM Oct 16, 2021Observed: -0.26 ft at 8:30AM Oct 16, 2021Observed: -0.26 ft at 8:45AM Oct 16, 2021Observed: -0.26 ft at 9:00AM Oct 16, 2021Observed: -0.26 ft at 9:15AM Oct 16, 2021Observed: -0.26 ft at 9:30AM Oct 16, 2021Observed: -0.26 ft at 9:45AM Oct 16, 2021Observed: -0.26 ft at 10:00AM Oct 16, 2021Observed: -0.26 ft at 10:15AM Oct 16, 2021Observed: -0.26 ft at 10:30AM Oct 16, 2021Observed: -0.26 ft at 10:45AM Oct 16, 2021Observed: -0.26 ft at 11:00AM Oct 16, 2021Observed: -0.26 ft at 11:15AM Oct 16, 2021Observed: -0.26 ft at 11:30AM Oct 16, 2021Observed: -0.27 ft at 11:45AM Oct 16, 2021Observed: -0.26 ft at 12:00PM Oct 16, 2021Observed: -0.26 ft at 12:15PM Oct 16, 2021Observed: -0.26 ft at 12:30PM Oct 16, 2021Observed: -0.26 ft at 12:45PM Oct 16, 2021Observed: -0.26 ft at 1:00PM Oct 16, 2021Observed: -0.27 ft at 1:15PM Oct 16, 2021Observed: -0.26 ft at 1:30PM Oct 16, 2021Observed: -0.26 ft at 1:45PM Oct 16, 2021Observed: -0.26 ft at 2:00PM Oct 16, 2021Observed: -0.26 ft at 2:15PM Oct 16, 2021Observed: -0.27 ft at 2:30PM Oct 16, 2021Observed: -0.26 ft at 2:45PM Oct 16, 2021Observed: -0.26 ft at 3:00PM Oct 16, 2021Highest Forecast: 0.4 ft 4:00PM Oct 16, 2021Highest Forecast: 0.4 ft 5:00PM Oct 16, 2021Highest Forecast: 0.4 ft 6:00PM Oct 16, 2021Highest Forecast: 0.4 ft 7:00PM Oct 16, 2021Highest Forecast: 0.4 ft 8:00PM Oct 16, 2021Highest Forecast: 0.4 ft 9:00PM Oct 16, 2021Highest Forecast: 0.4 ft 10:00PM Oct 16, 2021Highest Forecast: 0.4 ft 11:00PM Oct 16, 2021Highest Forecast: 0.4 ft 12:00AM Oct 17, 2021Highest Forecast: 0.4 ft 1:00AM Oct 17, 2021Highest Forecast: 0.4 ft 2:00AM Oct 17, 2021Highest Forecast: 0.4 ft 3:00AM Oct 17, 2021Highest Forecast: 0.4 ft 4:00AM Oct 17, 2021Highest Forecast: 0.4 ft 5:00AM Oct 17, 2021Highest Forecast: 0.4 ft 6:00AM Oct 17, 2021Highest Forecast: 0.4 ft 7:00AM Oct 17, 2021Highest Forecast: 0.4 ft 8:00AM Oct 17, 2021Highest Forecast: 0.4 ft 9:00AM Oct 17, 2021Highest Forecast: 0.4 ft 10:00AM Oct 17, 2021Highest Forecast: 0.4 ft 11:00AM Oct 17, 2021Highest Forecast: 0.4 ft 12:00PM Oct 17, 2021Highest Forecast: 0.4 ft 1:00PM Oct 17, 2021Highest Forecast: 0.4 ft 2:00PM Oct 17, 2021Highest Forecast: 0.4 ft 3:00PM Oct 17, 2021Highest Forecast: 0.4 ft 4:00PM Oct 17, 2021Highest Forecast: 0.4 ft 5:00PM Oct 17, 2021Highest Forecast: 0.4 ft 6:00PM Oct 17, 2021Highest Forecast: 0.4 ft 7:00PM Oct 17, 2021Highest Forecast: 0.4 ft 8:00PM Oct 17, 2021Highest Forecast: 0.4 ft 9:00PM Oct 17, 2021Highest Forecast: 0.4 ft 10:00PM Oct 17, 2021Highest Forecast: 0.4 ft 11:00PM Oct 17, 2021Highest Forecast: 0.4 ft 12:00AM Oct 18, 2021Highest Forecast: 0.4 ft 1:00AM Oct 18, 2021Highest Forecast: 0.4 ft 2:00AM Oct 18, 2021Highest Forecast: 0.4 ft 3:00AM Oct 18, 2021Highest Forecast: 0.4 ft 4:00AM Oct 18, 2021Highest Forecast: 0.4 ft 5:00AM Oct 18, 2021Highest Forecast: 0.4 ft 6:00AM Oct 18, 2021Highest Forecast: 0.4 ft 7:00AM Oct 18, 2021Highest Forecast: 0.4 ft 8:00AM Oct 18, 2021Highest Forecast: 0.4 ft 9:00AM Oct 18, 2021Highest Forecast: 0.4 ft 10:00AM Oct 18, 2021Highest Forecast: 0.4 ft 11:00AM Oct 18, 2021Highest Forecast: 0.4 ft 12:00PM Oct 18, 2021Highest Forecast: 0.4 ft 1:00PM Oct 18, 2021Highest Forecast: 0.4 ft 2:00PM Oct 18, 2021Highest Forecast: 0.4 ft 3:00PM Oct 18, 2021Highest Forecast: 0.4 ft 4:00PM Oct 18, 2021Highest Forecast: 0.4 ft 5:00PM Oct 18, 2021Highest Forecast: 0.4 ft 6:00PM Oct 18, 2021Highest Forecast: 0.4 ft 7:00PM Oct 18, 2021Highest Forecast: 0.4 ft 8:00PM Oct 18, 2021Highest Forecast: 0.4 ft 9:00PM Oct 18, 2021Highest Forecast: 0.4 ft 10:00PM Oct 18, 2021Highest Forecast: 0.4 ft 11:00PM Oct 18, 2021Highest Forecast: 0.4 ft 12:00AM Oct 19, 2021Highest Forecast: 0.4 ft 1:00AM Oct 19, 2021Highest Forecast: 0.4 ft 2:00AM Oct 19, 2021Highest Forecast: 0.4 ft 3:00AM Oct 19, 2021Highest Forecast: 0.4 ft 4:00AM Oct 19, 2021Highest Forecast: 0.4 ft 5:00AM Oct 19, 2021Highest Forecast: 0.4 ft 6:00AM Oct 19, 2021Highest Forecast: 0.4 ft 7:00AM Oct 19, 2021Highest Forecast: 0.4 ft 8:00AM Oct 19, 2021Highest Forecast: 0.4 ft 9:00AM Oct 19, 2021Highest Forecast: 0.4 ft 10:00AM Oct 19, 2021Highest Forecast: 0.4 ft 11:00AM Oct 19, 2021Highest Forecast: 0.4 ft 12:00PM Oct 19, 2021Highest Forecast: 0.4 ft 1:00PM Oct 19, 2021Highest Forecast: 0.4 ft 2:00PM Oct 19, 2021Highest Forecast: 0.4 ft 3:00PM Oct 19, 2021Highest Forecast: 0.4 ft 4:00PM Oct 19, 2021Highest Forecast: 0.4 ft 5:00PM Oct 19, 2021Highest Forecast: 0.4 ft 6:00PM Oct 19, 2021Highest Forecast: 0.4 ft 7:00PM Oct 19, 2021Highest Forecast: 0.4 ft 8:00PM Oct 19, 2021Highest Forecast: 0.4 ft 9:00PM Oct 19, 2021Highest Forecast: 0.4 ft 10:00PM Oct 19, 2021Highest Forecast: 0.4 ft 11:00PM Oct 19, 2021Highest Forecast: 0.4 ft 12:00AM Oct 20, 2021Highest Forecast: 0.4 ft 1:00AM Oct 20, 2021Highest Forecast: 0.4 ft 2:00AM Oct 20, 2021Highest Forecast: 0.4 ft 3:00AM Oct 20, 2021Highest Forecast: 0.4 ft 4:00AM Oct 20, 2021Highest Forecast: 0.4 ft 5:00AM Oct 20, 2021Highest Forecast: 0.4 ft 6:00AM Oct 20, 2021Highest Forecast: 0.4 ft 7:00AM Oct 20, 2021Highest Forecast: 0.4 ft 8:00AM Oct 20, 2021Highest Forecast: 0.4 ft 9:00AM Oct 20, 2021Highest Forecast: 0.4 ft 10:00AM Oct 20, 2021Highest Forecast: 0.4 ft 11:00AM Oct 20, 2021Highest Forecast: 0.4 ft 12:00PM Oct 20, 2021Highest Forecast: 0.4 ft 1:00PM Oct 20, 2021Highest Forecast: 0.4 ft 2:00PM Oct 20, 2021Highest Forecast: 0.4 ft 3:00PM Oct 20, 2021Highest Forecast: 0.4 ft 4:00PM Oct 20, 2021Highest Forecast: 0.4 ft 5:00PM Oct 20, 2021Highest Forecast: 0.4 ft 6:00PM Oct 20, 2021Highest Forecast: 0.4 ft 7:00PM Oct 20, 2021Highest Forecast: 0.4 ft 8:00PM Oct 20, 2021Highest Forecast: 0.4 ft 9:00PM Oct 20, 2021Highest Forecast: 0.4 ft 10:00PM Oct 20, 2021Highest Forecast: 0.4 ft 11:00PM Oct 20, 2021Highest Forecast: 0.4 ft 12:00AM Oct 21, 2021Highest Forecast: 0.4 ft 1:00AM Oct 21, 2021Highest Forecast: 0.4 ft 2:00AM Oct 21, 2021Highest Forecast: 0.4 ft 3:00AM Oct 21, 2021Highest Forecast: 0.4 ft 4:00AM Oct 21, 2021Highest Forecast: 0.4 ft 5:00AM Oct 21, 2021USGS--Water Resources of the United StatesSHEC1(plotting HGIRG) Graph Created (3:15PM Oct 16, 2021)ObservedForecast (issued 8:15AM Oct 16)Latest observed value: -0.26 ft at 3:00 PM PDT 16-Oct-2021. Flood Stage is 18 ft
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Tabular Data (UTC)
Tabular Data (PDT)
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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.
Flood Impacts & Photos Collapse
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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.
About This Location Collapse

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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