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Hydrograph River at a Glance Download
Carneros Creek at Old Sonoma Road Stage (ft)Observed: 0.06 ft at 6:13PM May 13, 2021Highest Observation: 0.07 ft at 6:15PM May 13, 2021CCJC1(plotting HGIRR) Graph Created (9:15AM May 18, 2021)ObservedLatest observed value: 0.07 ft at 6:15 PM PDT 13-May-2021. Flood Stage is 19.5 ft
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Tabular Data (PDT)
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Datum: Not Available
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NOTE: Graphical forecasts are not available for the Carneros Creek at Old Sonoma Road. During times of high water, forecast crest information can be found in the text products.
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Flood Categories (in feet)
Major Flood Stage: 28
Moderate Flood Stage: 25
Flood Stage: 19.5
Action Stage: 17.5
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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28 Major Flood Stage. Water is 3 feet deep on floodplain. Major roadway flooding in the area, including Highway 12/121.
25 Moderate Flood Stage. Flood waters are on the floodplain. Old Sonoma Road flooded. Old Sonoma Highway and Highway 12/121 likely flooded or in jeopardy just downstream.
19.5 Minor Flood Stage. Backwatering begins at Old Sonoma Road bridge. Water level is reaching elevation of bridge, with possible overflow. NWS will issue a Flash Flood Warning if not yet already issued.
17.5 Monitor Stage. Water is 2 feet below backwatering at Old Sonoma Road bridge. NWS will issue a Flash Flood Watch if not already issued.
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Latitude: 38.256667° N, Longitude: 122.340278° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 19.5 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 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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