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Hydrograph River at a Glance Download
Napa River at Downtown Napa Stage (ft)Observed: 4.86 ft at 8:50PM Apr 11, 2024Observed: 4.76 ft at 8:56PM Apr 11, 2024Observed: 5.07 ft at 1:18AM Apr 12, 2024Observed: 5.17 ft at 1:24AM Apr 12, 2024Observed: 5.82 ft at 2:06AM Apr 12, 2024Observed: 5.93 ft at 2:14AM Apr 12, 2024Observed: 6.04 ft at 2:22AM Apr 12, 2024Observed: 6.15 ft at 2:30AM Apr 12, 2024Observed: 6.25 ft at 2:36AM Apr 12, 2024Observed: 6.36 ft at 2:44AM Apr 12, 2024Observed: 6.9 ft at 3:22AM Apr 12, 2024Observed: 6.25 ft at 7:46AM Apr 12, 2024Observed: 6.15 ft at 7:50AM Apr 12, 2024Observed: 6.04 ft at 7:56AM Apr 12, 2024Observed: 4.94 ft at 8:50AM Apr 12, 2024Observed: 4.83 ft at 8:56AM Apr 12, 2024Observed: 3.29 ft at 10:04AM Apr 12, 2024Observed: 3.17 ft at 10:08AM Apr 12, 2024Observed: 3.05 ft at 10:14AM Apr 12, 2024Observed: 0.99 ft at 11:32AM Apr 12, 2024Observed: 0.87 ft at 11:36AM Apr 12, 2024Observed: 0.76 ft at 11:40AM Apr 12, 2024Observed: 0.65 ft at 11:44AM Apr 12, 2024Observed: -0.31 ft at 12:30PM Apr 12, 2024Observed: -0.41 ft at 12:42PM Apr 12, 2024Observed: 3.04 ft at 2:30PM Apr 12, 2024Observed: 3.16 ft at 2:34PM Apr 12, 2024Observed: 3.27 ft at 2:38PM Apr 12, 2024Observed: 3.39 ft at 2:42PM Apr 12, 2024Observed: 6.64 ft at 7:16PM Apr 12, 2024Observed: 6.43 ft at 8:48PM Apr 12, 2024Observed: 6.32 ft at 8:56PM Apr 12, 2024Observed: 4.07 ft at 11:54PM Apr 12, 2024Observed: 5.16 ft at 1:46AM Apr 13, 2024Observed: 5.27 ft at 1:52AM Apr 13, 2024Observed: 5.38 ft at 1:58AM Apr 13, 2024Observed: 7.77 ft at 5:02AM Apr 13, 2024Highest Observation: 7.88 ft at 5:14AM Apr 13, 2024Highest Observation: 7.88 ft at 7:00AM Apr 13, 2024Observed: 7.77 ft at 7:08AM Apr 13, 2024Observed: 7.66 ft at 7:16AM Apr 13, 2024Observed: 7.55 ft at 7:24AM Apr 13, 2024Observed: 7.1 ft at 7:48AM Apr 13, 2024Observed: 6.99 ft at 7:54AM Apr 13, 2024Observed: 6.35 ft at 8:30AM Apr 13, 2024Observed: 6.24 ft at 8:36AM Apr 13, 2024Observed: 6.12 ft at 8:42AM Apr 13, 2024Observed: 4.03 ft at 10:32AM Apr 13, 2024Observed: 3.91 ft at 10:36AM Apr 13, 2024Observed: 3.79 ft at 10:42AM Apr 13, 2024Observed: 3.52 ft at 4:04PM Apr 13, 2024Observed: 3.63 ft at 4:10PM Apr 13, 2024Observed: 4.57 ft at 5:24PM Apr 13, 2024Observed: 4.68 ft at 5:34PM Apr 13, 2024Observed: 4.78 ft at 5:42PM Apr 13, 2024Observed: 4.2 ft at 1:44AM Apr 14, 2024Observed: 5.06 ft at 2:52AM Apr 14, 2024Observed: 5.17 ft at 3:00AM Apr 14, 2024Observed: 5.27 ft at 3:08AM Apr 14, 2024Observed: 5.58 ft at 3:34AM Apr 14, 2024Observed: 6.93 ft at 7:38AM Apr 14, 2024Observed: 6.06 ft at 8:46AM Apr 14, 2024Observed: 5.95 ft at 8:52AM Apr 14, 2024Observed: 5.84 ft at 8:58AM Apr 14, 2024Observed: 3.68 ft at 10:50AM Apr 14, 2024Observed: 3.57 ft at 10:54AM Apr 14, 2024Observed: 3.46 ft at 11:00AM Apr 14, 2024Observed: 3.35 ft at 11:06AM Apr 14, 2024Observed: 3.24 ft at 11:12AM Apr 14, 2024Observed: 1.9 ft at 12:16PM Apr 14, 2024Observed: 1.8 ft at 12:20PM Apr 14, 2024Observed: 1.7 ft at 12:24PM Apr 14, 2024Observed: 1.59 ft at 12:28PM Apr 14, 2024Observed: 0.75 ft at 1:00PM Apr 14, 2024Observed: 0.65 ft at 1:04PM Apr 14, 2024Observed: 0.52 ft at 1:08PM Apr 14, 2024Observed: 0.4 ft at 1:14PM Apr 14, 2024Observed: 4.2 ft at 6:20PM Apr 14, 2024Observed: 4.51 ft at 6:48PM Apr 14, 2024Observed: 4.62 ft at 6:56PM Apr 14, 2024Observed: 4.72 ft at 7:04PM Apr 14, 2024Observed: 4.83 ft at 7:12PM Apr 14, 2024Observed: 5.25 ft at 11:48PM Apr 14, 2024Observed: 5.15 ft at 11:56PM Apr 14, 2024Observed: 4.83 ft at 12:20AM Apr 15, 2024Observed: 4.72 ft at 12:28AM Apr 15, 2024Observed: 4.52 ft at 3:48AM Apr 15, 2024Observed: 4.63 ft at 3:58AM Apr 15, 2024Observed: 5.81 ft at 5:46AM Apr 15, 2024Observed: 5.92 ft at 5:58AM Apr 15, 2024Observed: 6.13 ft at 6:22AM Apr 15, 2024Observed: 5.28 ft at 10:00AM Apr 15, 2024Observed: 5.18 ft at 10:06AM Apr 15, 2024Observed: 5.07 ft at 10:12AM Apr 15, 2024Observed: 4.76 ft at 10:30AM Apr 15, 2024Observed: 4.65 ft at 10:36AM Apr 15, 2024Observed: 4.55 ft at 10:42AM Apr 15, 2024Observed: 2.69 ft at 12:18PM Apr 15, 2024Observed: 2.59 ft at 12:24PM Apr 15, 2024Observed: 0.33 ft at 3:30PM Apr 15, 2024Observed: 0.43 ft at 3:36PM Apr 15, 2024Observed: 0.54 ft at 3:42PM Apr 15, 2024Observed: 1.19 ft at 4:18PM Apr 15, 2024Observed: 1.3 ft at 4:24PM Apr 15, 2024Observed: 3.49 ft at 6:32PM Apr 15, 2024Observed: 3.59 ft at 6:40PM Apr 15, 2024Observed: 3.69 ft at 6:50PM Apr 15, 2024Observed: 5.15 ft at 8:50PM Apr 15, 2024Observed: 5.26 ft at 8:58PM Apr 15, 2024Observed: 5.36 ft at 9:08PM Apr 15, 2024Observed: 5.67 ft at 12:16AM Apr 16, 2024Observed: 5.56 ft at 12:26AM Apr 16, 2024Observed: 4.71 ft at 1:30AM Apr 16, 2024Observed: 4.59 ft at 1:38AM Apr 16, 2024Observed: 4.49 ft at 1:44AM Apr 16, 2024Observed: 3.97 ft at 2:32AM Apr 16, 2024Observed: 3.86 ft at 2:48AM Apr 16, 2024Observed: 3.86 ft at 4:40AM Apr 16, 2024Observed: 3.96 ft at 4:52AM Apr 16, 2024Observed: 4.07 ft at 5:02AM Apr 16, 2024Observed: 4.18 ft at 5:12AM Apr 16, 2024Observed: 4.5 ft at 5:36AM Apr 16, 2024Observed: 4.61 ft at 5:44AM Apr 16, 2024Observed: 4.72 ft at 5:52AM Apr 16, 2024Observed: 5.04 ft at 6:22AM Apr 16, 2024Observed: 3.77 ft at 12:16PM Apr 16, 2024Observed: 3.67 ft at 12:22PM Apr 16, 2024Observed: 3.56 ft at 12:28PM Apr 16, 2024Observed: 3.04 ft at 1:02PM Apr 16, 2024Observed: 2.92 ft at 1:10PM Apr 16, 2024Observed: 2.81 ft at 1:16PM Apr 16, 2024Observed: 2.71 ft at 1:20PM Apr 16, 2024Observed: 2.6 ft at 1:26PM Apr 16, 2024Observed: 0.48 ft at 4:24PM Apr 16, 2024Observed: 0.93 ft at 4:50PM Apr 16, 2024Observed: 1.04 ft at 4:56PM Apr 16, 2024Observed: 1.49 ft at 5:22PM Apr 16, 2024Observed: 1.6 ft at 5:28PM Apr 16, 2024Observed: 1.72 ft at 5:34PM Apr 16, 2024Observed: 1.83 ft at 5:40PM Apr 16, 2024Observed: 1.93 ft at 5:46PM Apr 16, 2024Observed: 2.04 ft at 5:52PM Apr 16, 2024Observed: 2.15 ft at 5:56PM Apr 16, 2024Observed: 3.23 ft at 7:02PM Apr 16, 2024Observed: 3.33 ft at 7:10PM Apr 16, 2024Observed: 3.55 ft at 7:30PM Apr 16, 2024Observed: 3.65 ft at 7:38PM Apr 16, 2024Napa CountyNCNC1(plotting HGIRR) Graph Created (8:30PM Apr 16, 2024)ObservedLatest observed value: 3.65 ft at 7:38 PM PDT 16-Apr-2024.
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About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Graphical forecasts are not available for the Napa River at Downtown Napa. During times of high water, forecast crest information can be found in the text products.
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Flood Categories (in feet)
Not Available

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:16
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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.
About This Location Collapse

Latitude: 38.297500° N, Longitude: 122.282800° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft Not Available 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  
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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.
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Page last modified: 2-Nov-2020 7:27 PM
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