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Hydrograph River at a Glance Download
Napa River at Downtown Napa Stage (ft)Observed: 5.81 ft at 10:16AM Apr 18, 2024Observed: 6.23 ft at 11:10AM Apr 18, 2024Observed: 5.7 ft at 1:06PM Apr 18, 2024Observed: 5.59 ft at 1:12PM Apr 18, 2024Observed: 5.47 ft at 1:18PM Apr 18, 2024Observed: 5.36 ft at 1:24PM Apr 18, 2024Observed: 3.18 ft at 3:22PM Apr 18, 2024Observed: 3.06 ft at 3:28PM Apr 18, 2024Observed: 1.84 ft at 4:32PM Apr 18, 2024Observed: 1.72 ft at 4:38PM Apr 18, 2024Observed: 1.62 ft at 4:44PM Apr 18, 2024Observed: 0.82 ft at 6:12PM Apr 18, 2024Observed: 6.17 ft at 11:46PM Apr 18, 2024Observed: 6.28 ft at 11:56PM Apr 18, 2024Observed: 6.7 ft at 12:50AM Apr 19, 2024Observed: 4.59 ft at 4:04AM Apr 19, 2024Observed: 4.48 ft at 4:10AM Apr 19, 2024Observed: 2.43 ft at 6:20AM Apr 19, 2024Observed: 2.32 ft at 6:28AM Apr 19, 2024Observed: 2.44 ft at 7:30AM Apr 19, 2024Observed: 2.55 ft at 7:36AM Apr 19, 2024Observed: 2.65 ft at 7:40AM Apr 19, 2024Observed: 2.75 ft at 7:44AM Apr 19, 2024Observed: 6.2 ft at 11:46AM Apr 19, 2024Observed: 5.55 ft at 2:20PM Apr 19, 2024Observed: 5.44 ft at 2:26PM Apr 19, 2024Observed: 4.45 ft at 3:18PM Apr 19, 2024Observed: 4.34 ft at 3:22PM Apr 19, 2024Observed: 4.23 ft at 3:28PM Apr 19, 2024Observed: 3.81 ft at 3:48PM Apr 19, 2024Observed: 3.7 ft at 3:52PM Apr 19, 2024Observed: 3.6 ft at 3:58PM Apr 19, 2024Observed: 3.5 ft at 4:04PM Apr 19, 2024Observed: 3.39 ft at 4:12PM Apr 19, 2024Observed: 2.74 ft at 4:50PM Apr 19, 2024Observed: 2.63 ft at 4:56PM Apr 19, 2024Observed: 2.73 ft at 8:16PM Apr 19, 2024Observed: 2.85 ft at 8:20PM Apr 19, 2024Observed: 2.97 ft at 8:26PM Apr 19, 2024Observed: 4.28 ft at 9:50PM Apr 19, 2024Observed: 4.59 ft at 10:16PM Apr 19, 2024Observed: 4.7 ft at 10:24PM Apr 19, 2024Observed: 6.43 ft at 12:32AM Apr 20, 2024Observed: 6.53 ft at 12:44AM Apr 20, 2024Observed: 6.63 ft at 12:56AM Apr 20, 2024Observed: 6.74 ft at 1:14AM Apr 20, 2024Observed: 5.1 ft at 4:00AM Apr 20, 2024Observed: 4.99 ft at 4:06AM Apr 20, 2024Observed: 4.88 ft at 4:12AM Apr 20, 2024Observed: 4.77 ft at 4:18AM Apr 20, 2024Observed: 4.66 ft at 4:24AM Apr 20, 2024Observed: 4.55 ft at 4:30AM Apr 20, 2024Observed: 4.45 ft at 4:34AM Apr 20, 2024Observed: 4.35 ft at 4:40AM Apr 20, 2024Observed: 4.24 ft at 4:44AM Apr 20, 2024Observed: 1.55 ft at 7:20AM Apr 20, 2024Observed: 1.68 ft at 8:06AM Apr 20, 2024Observed: 1.8 ft at 8:10AM Apr 20, 2024Observed: 1.9 ft at 8:14AM Apr 20, 2024Observed: 2.37 ft at 8:30AM Apr 20, 2024Observed: 2.47 ft at 8:32AM Apr 20, 2024Observed: 2.58 ft at 8:36AM Apr 20, 2024Observed: 2.71 ft at 8:40AM Apr 20, 2024Observed: 2.83 ft at 8:44AM Apr 20, 2024Observed: 4.57 ft at 10:22AM Apr 20, 2024Observed: 4.99 ft at 11:04AM Apr 20, 2024Observed: 5.09 ft at 11:12AM Apr 20, 2024Observed: 6.27 ft at 12:58PM Apr 20, 2024Observed: 4.33 ft at 4:04PM Apr 20, 2024Observed: 4.22 ft at 4:08PM Apr 20, 2024Observed: 4.11 ft at 4:14PM Apr 20, 2024Observed: 3.19 ft at 5:02PM Apr 20, 2024Observed: 3.09 ft at 5:08PM Apr 20, 2024Observed: 2.98 ft at 5:14PM Apr 20, 2024Observed: 2.88 ft at 5:20PM Apr 20, 2024Observed: 2.78 ft at 5:26PM Apr 20, 2024Observed: 1.81 ft at 6:16PM Apr 20, 2024Observed: 1.71 ft at 6:20PM Apr 20, 2024Observed: 1.61 ft at 6:26PM Apr 20, 2024Observed: 6.45 ft at 1:00AM Apr 21, 2024Observed: 6.55 ft at 1:14AM Apr 21, 2024Observed: 6.76 ft at 1:54AM Apr 21, 2024Observed: 6.66 ft at 2:48AM Apr 21, 2024Observed: 6.55 ft at 3:00AM Apr 21, 2024Observed: 6.45 ft at 3:08AM Apr 21, 2024Observed: 6 ft at 3:34AM Apr 21, 2024Observed: 5.88 ft at 3:40AM Apr 21, 2024Observed: 5.45 ft at 4:00AM Apr 21, 2024Observed: 5.34 ft at 4:06AM Apr 21, 2024Observed: 5.24 ft at 4:10AM Apr 21, 2024Observed: 2.06 ft at 6:46AM Apr 21, 2024Observed: 1.95 ft at 6:52AM Apr 21, 2024Observed: 1.83 ft at 6:56AM Apr 21, 2024Observed: 1.72 ft at 7:02AM Apr 21, 2024Observed: 1.6 ft at 7:06AM Apr 21, 2024Observed: 1.49 ft at 7:12AM Apr 21, 2024Observed: 1.07 ft at 7:32AM Apr 21, 2024Observed: 0.96 ft at 7:38AM Apr 21, 2024Observed: 0.86 ft at 7:44AM Apr 21, 2024Observed: 1.26 ft at 8:48AM Apr 21, 2024Observed: 1.37 ft at 8:52AM Apr 21, 2024Observed: 1.47 ft at 8:54AM Apr 21, 2024Observed: 1.58 ft at 8:58AM Apr 21, 2024Observed: 1.69 ft at 9:00AM Apr 21, 2024Observed: 1.8 ft at 9:04AM Apr 21, 2024Observed: 1.9 ft at 9:06AM Apr 21, 2024Observed: 2 ft at 9:10AM Apr 21, 2024Observed: 2.1 ft at 9:12AM Apr 21, 2024Observed: 4.37 ft at 11:10AM Apr 21, 2024Observed: 5.01 ft at 12:04PM Apr 21, 2024Observed: 5.13 ft at 12:12PM Apr 21, 2024Observed: 5.46 ft at 12:36PM Apr 21, 2024Observed: 5.57 ft at 12:44PM Apr 21, 2024Observed: 4.26 ft at 4:50PM Apr 21, 2024Observed: 4.15 ft at 4:54PM Apr 21, 2024Observed: 3.1 ft at 5:50PM Apr 21, 2024Observed: 3 ft at 5:56PM Apr 21, 2024Observed: 1.45 ft at 7:20PM Apr 21, 2024Observed: 1.34 ft at 7:26PM Apr 21, 2024Observed: 1.23 ft at 7:34PM Apr 21, 2024Observed: 6.65 ft at 1:22AM Apr 22, 2024Observed: 5.24 ft at 4:48AM Apr 22, 2024Observed: 5.12 ft at 4:54AM Apr 22, 2024Observed: 4.59 ft at 5:20AM Apr 22, 2024Observed: 4.49 ft at 5:26AM Apr 22, 2024Observed: 4.38 ft at 5:30AM Apr 22, 2024Observed: 4.27 ft at 5:36AM Apr 22, 2024Observed: 4.16 ft at 5:40AM Apr 22, 2024Observed: 3.35 ft at 6:16AM Apr 22, 2024Observed: 3.23 ft at 6:22AM Apr 22, 2024Observed: 3.12 ft at 6:28AM Apr 22, 2024Observed: 2.13 ft at 7:16AM Apr 22, 2024Observed: 2.01 ft at 7:20AM Apr 22, 2024Observed: 1.9 ft at 7:26AM Apr 22, 2024Observed: 2.44 ft at 10:00AM Apr 22, 2024Observed: 2.55 ft at 10:02AM Apr 22, 2024Observed: 2.68 ft at 10:06AM Apr 22, 2024Observed: 2.8 ft at 10:10AM Apr 22, 2024Observed: 2.92 ft at 10:14AM Apr 22, 2024Observed: 3.37 ft at 10:32AM Apr 22, 2024Observed: 3.47 ft at 10:38AM Apr 22, 2024Observed: 3.59 ft at 10:44AM Apr 22, 2024Observed: 4.67 ft at 12:02PM Apr 22, 2024Observed: 4.77 ft at 12:10PM Apr 22, 2024Observed: 5.32 ft at 12:48PM Apr 22, 2024Observed: 5.42 ft at 12:56PM Apr 22, 2024Observed: 6.18 ft at 1:52PM Apr 22, 2024Observed: 6.59 ft at 4:12PM Apr 22, 2024Observed: 6.49 ft at 4:22PM Apr 22, 2024Observed: 5.86 ft at 5:02PM Apr 22, 2024Observed: 5.75 ft at 5:08PM Apr 22, 2024Observed: 5.64 ft at 5:14PM Apr 22, 2024Observed: 3.49 ft at 7:20PM Apr 22, 2024Observed: 3.37 ft at 7:28PM Apr 22, 2024Observed: 4.2 ft at 10:18PM Apr 22, 2024Observed: 4.31 ft at 10:22PM Apr 22, 2024Observed: 4.42 ft at 10:28PM Apr 22, 2024Observed: 4.85 ft at 10:50PM Apr 22, 2024Observed: 4.96 ft at 10:56PM Apr 22, 2024Observed: 5.28 ft at 11:18PM Apr 22, 2024Observed: 5.39 ft at 11:26PM Apr 22, 2024Observed: 5.71 ft at 11:50PM Apr 22, 2024Observed: 5.82 ft at 11:58PM Apr 22, 2024Observed: 6.15 ft at 12:22AM Apr 23, 2024Highest Observation: 7.11 ft at 1:48AM Apr 23, 2024Observed: 6.45 ft at 4:30AM Apr 23, 2024Observed: 6.35 ft at 4:36AM Apr 23, 2024Observed: 6.25 ft at 4:40AM Apr 23, 2024Observed: 5.47 ft at 5:18AM Apr 23, 2024Observed: 5.35 ft at 5:24AM Apr 23, 2024Observed: 5.23 ft at 5:30AM Apr 23, 2024Observed: 5.12 ft at 5:36AM Apr 23, 2024Observed: 5.01 ft at 5:42AM Apr 23, 2024Observed: 1.78 ft at 8:18AM Apr 23, 2024Observed: 1.68 ft at 8:22AM Apr 23, 2024Observed: 1.56 ft at 8:26AM Apr 23, 2024Napa CountyNCNC1(plotting HGIRR) Graph Created (9:15AM Apr 23, 2024)ObservedLatest observed value: 1.56 ft at 8:26 AM PDT 23-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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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.
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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