Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners

Feedback/Questions
    Provide Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 

Web Portal Changes:

Please visit https://www.weather.gov/owp/operations for more information.



Hydrograph River at a Glance Download
Napa River at Downtown Napa Stage (ft)Observed: 4.55 ft at 1:20PM Apr 24, 2024Observed: 4.65 ft at 1:28PM Apr 24, 2024Observed: 6.15 ft at 3:38PM Apr 24, 2024Observed: 6.37 ft at 5:02PM Apr 24, 2024Observed: 5.95 ft at 5:46PM Apr 24, 2024Observed: 5.84 ft at 5:54PM Apr 24, 2024Observed: 5.39 ft at 6:18PM Apr 24, 2024Observed: 5.28 ft at 6:24PM Apr 24, 2024Observed: 4.48 ft at 7:04PM Apr 24, 2024Observed: 4.37 ft at 7:10PM Apr 24, 2024Observed: 3.21 ft at 8:22PM Apr 24, 2024Observed: 2.7 ft at 9:10PM Apr 24, 2024Observed: 2.71 ft at 10:08PM Apr 24, 2024Observed: 2.83 ft at 10:16PM Apr 24, 2024Observed: 2.93 ft at 10:20PM Apr 24, 2024Observed: 3.05 ft at 10:26PM Apr 24, 2024Observed: 5.75 ft at 5:50AM Apr 25, 2024Observed: 5.65 ft at 5:54AM Apr 25, 2024Observed: 0.6 ft at 9:32AM Apr 25, 2024Observed: 0.49 ft at 9:36AM Apr 25, 2024Observed: 0.39 ft at 9:40AM Apr 25, 2024Observed: 0.27 ft at 9:44AM Apr 25, 2024Observed: 1.55 ft at 11:46AM Apr 25, 2024Observed: 1.68 ft at 11:50AM Apr 25, 2024Observed: 1.79 ft at 11:54AM Apr 25, 2024Observed: 1.92 ft at 11:58AM Apr 25, 2024Observed: 2.85 ft at 12:32PM Apr 25, 2024Observed: 2.95 ft at 12:36PM Apr 25, 2024Observed: 3.07 ft at 12:42PM Apr 25, 2024Observed: 3.17 ft at 12:46PM Apr 25, 2024Observed: 3.28 ft at 12:52PM Apr 25, 2024Observed: 3.39 ft at 12:56PM Apr 25, 2024Observed: 3.51 ft at 1:02PM Apr 25, 2024Observed: 3.61 ft at 1:08PM Apr 25, 2024Observed: 3.72 ft at 1:14PM Apr 25, 2024Observed: 6.08 ft at 4:36PM Apr 25, 2024Observed: 5.68 ft at 6:36PM Apr 25, 2024Observed: 5.57 ft at 6:42PM Apr 25, 2024Observed: 3.53 ft at 8:46PM Apr 25, 2024Observed: 3.43 ft at 8:54PM Apr 25, 2024Observed: 3.55 ft at 11:04PM Apr 25, 2024Observed: 3.66 ft at 11:10PM Apr 25, 2024Observed: 3.78 ft at 11:14PM Apr 25, 2024Observed: 6 ft at 1:20AM Apr 26, 2024Observed: 6.32 ft at 1:46AM Apr 26, 2024Observed: 6.42 ft at 1:54AM Apr 26, 2024Observed: 6.7 ft at 5:32AM Apr 26, 2024Observed: 6.59 ft at 5:38AM Apr 26, 2024Observed: 4.6 ft at 7:16AM Apr 26, 2024Observed: 4.48 ft at 7:22AM Apr 26, 2024Observed: 4.38 ft at 7:28AM Apr 26, 2024Observed: 3.59 ft at 8:02AM Apr 26, 2024Observed: 3.48 ft at 8:08AM Apr 26, 2024Observed: 3.38 ft at 8:12AM Apr 26, 2024Observed: 3.28 ft at 8:18AM Apr 26, 2024Observed: 3.16 ft at 8:24AM Apr 26, 2024Observed: 3.06 ft at 8:28AM Apr 26, 2024Observed: 2.25 ft at 9:04AM Apr 26, 2024Observed: 2.16 ft at 9:08AM Apr 26, 2024Observed: 2.05 ft at 9:12AM Apr 26, 2024Observed: 5.72 ft at 4:50PM Apr 26, 2024Observed: 4.96 ft at 8:04PM Apr 26, 2024Observed: 4.85 ft at 8:12PM Apr 26, 2024Observed: 4.53 ft at 8:30PM Apr 26, 2024Observed: 4.42 ft at 8:38PM Apr 26, 2024Observed: 4.31 ft at 8:44PM Apr 26, 2024Observed: 3.67 ft at 9:32PM Apr 26, 2024Observed: 3.56 ft at 9:44PM Apr 26, 2024Observed: 3.35 ft at 10:14PM Apr 26, 2024Observed: 4.75 ft at 12:20AM Apr 27, 2024Observed: 4.85 ft at 12:24AM Apr 27, 2024Highest Observation: 7.07 ft at 5:18AM Apr 27, 2024Observed: 6.21 ft at 6:16AM Apr 27, 2024Observed: 6.1 ft at 6:20AM Apr 27, 2024Observed: 6 ft at 6:26AM Apr 27, 2024Observed: 5.31 ft at 7:00AM Apr 27, 2024Observed: 5.2 ft at 7:06AM Apr 27, 2024Observed: 5.09 ft at 7:12AM Apr 27, 2024Observed: 4.42 ft at 7:48AM Apr 27, 2024Observed: 4.31 ft at 7:52AM Apr 27, 2024Observed: 4.2 ft at 7:58AM Apr 27, 2024Observed: 3.09 ft at 8:50AM Apr 27, 2024Observed: 2.99 ft at 8:54AM Apr 27, 2024Observed: 1.74 ft at 9:46AM Apr 27, 2024Observed: 1.63 ft at 9:50AM Apr 27, 2024Observed: 1.51 ft at 9:54AM Apr 27, 2024Observed: 1.39 ft at 9:58AM Apr 27, 2024Observed: 0.8 ft at 10:18AM Apr 27, 2024Observed: 0.69 ft at 10:22AM Apr 27, 2024Observed: 0.57 ft at 10:26AM Apr 27, 2024Observed: 0.45 ft at 10:30AM Apr 27, 2024Observed: 0.35 ft at 10:34AM Apr 27, 2024Observed: 0.24 ft at 10:38AM Apr 27, 2024Observed: 0.13 ft at 10:42AM Apr 27, 2024Observed: 1.53 ft at 1:18PM Apr 27, 2024Observed: 1.65 ft at 1:22PM Apr 27, 2024Observed: 1.78 ft at 1:26PM Apr 27, 2024Observed: 3.09 ft at 2:16PM Apr 27, 2024Observed: 3.19 ft at 2:22PM Apr 27, 2024Observed: 3.29 ft at 2:26PM Apr 27, 2024Observed: 3.94 ft at 3:06PM Apr 27, 2024Observed: 4.05 ft at 3:14PM Apr 27, 2024Observed: 4.57 ft at 4:08PM Apr 27, 2024Observed: 4.57 ft at 9:00PM Apr 27, 2024Observed: 4.46 ft at 9:06PM Apr 27, 2024Observed: 4.36 ft at 9:14PM Apr 27, 2024Observed: 3.63 ft at 10:26PM Apr 27, 2024Observed: 3.53 ft at 10:52PM Apr 27, 2024Observed: 4.06 ft at 12:18AM Apr 28, 2024Observed: 4.17 ft at 12:24AM Apr 28, 2024Observed: 4.85 ft at 1:06AM Apr 28, 2024Observed: 4.95 ft at 1:12AM Apr 28, 2024Observed: 5.26 ft at 1:34AM Apr 28, 2024Observed: 5.37 ft at 1:42AM Apr 28, 2024Observed: 5.48 ft at 1:50AM Apr 28, 2024Observed: 5.59 ft at 1:58AM Apr 28, 2024Observed: 5.81 ft at 2:16AM Apr 28, 2024Observed: 5.91 ft at 2:26AM Apr 28, 2024Observed: 6.34 ft at 3:08AM Apr 28, 2024Observed: 6.98 ft at 5:42AM Apr 28, 2024Observed: 6.87 ft at 5:56AM Apr 28, 2024Observed: 6.35 ft at 6:34AM Apr 28, 2024Observed: 6.24 ft at 6:40AM Apr 28, 2024Observed: 5.77 ft at 7:04AM Apr 28, 2024Observed: 5.66 ft at 7:10AM Apr 28, 2024Observed: 4.32 ft at 8:18AM Apr 28, 2024Observed: 4.2 ft at 8:24AM Apr 28, 2024Observed: 4.09 ft at 8:28AM Apr 28, 2024Observed: 0.59 ft at 1:32PM Apr 28, 2024Observed: 0.69 ft at 1:36PM Apr 28, 2024Observed: 0.8 ft at 1:40PM Apr 28, 2024Observed: 0.9 ft at 1:44PM Apr 28, 2024Observed: 1 ft at 1:48PM Apr 28, 2024Observed: 1.12 ft at 1:52PM Apr 28, 2024Observed: 1.23 ft at 1:56PM Apr 28, 2024Observed: 2.54 ft at 2:48PM Apr 28, 2024Observed: 2.64 ft at 2:52PM Apr 28, 2024Observed: 2.75 ft at 2:58PM Apr 28, 2024Observed: 3.84 ft at 4:08PM Apr 28, 2024Observed: 5.08 ft at 6:04PM Apr 28, 2024Observed: 5.19 ft at 6:14PM Apr 28, 2024Observed: 4.97 ft at 9:18PM Apr 28, 2024Observed: 4.87 ft at 9:28PM Apr 28, 2024Observed: 4.76 ft at 9:36PM Apr 28, 2024Observed: 4.65 ft at 9:44PM Apr 28, 2024Observed: 3.93 ft at 12:36AM Apr 29, 2024Observed: 4.03 ft at 12:46AM Apr 29, 2024Observed: 4.13 ft at 12:54AM Apr 29, 2024Observed: 6.15 ft at 3:36AM Apr 29, 2024Observed: 6.7 ft at 6:32AM Apr 29, 2024Observed: 6.6 ft at 6:44AM Apr 29, 2024Observed: 5.85 ft at 7:34AM Apr 29, 2024Observed: 5.74 ft at 7:40AM Apr 29, 2024Observed: 5.63 ft at 7:46AM Apr 29, 2024Observed: 5.52 ft at 7:52AM Apr 29, 2024Observed: 5.41 ft at 7:58AM Apr 29, 2024Observed: 5.3 ft at 8:04AM Apr 29, 2024Observed: 5.2 ft at 8:10AM Apr 29, 2024Observed: 4.76 ft at 8:34AM Apr 29, 2024Observed: 4.65 ft at 8:40AM Apr 29, 2024Observed: 2.36 ft at 10:34AM Apr 29, 2024Observed: 2.24 ft at 10:38AM Apr 29, 2024Observed: 2.14 ft at 10:42AM Apr 29, 2024Napa CountyNCNC1(plotting HGIRR) Graph Created (11:45AM Apr 29, 2024)ObservedLatest observed value: 2.14 ft at 10:42 AM PDT 29-Apr-2024.
Printable Image
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.
Return to Area Map
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
KML Image
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  
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
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
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:27 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities