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Web Portal Changes: In Spring 2024, the Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS) at a repurposed https://water.noaa.gov. A preview of NWPS is available here, where you can see your station hydrograph by replacing SSSSS with the station 5-character id: https://preview.water.noaa.gov/gauges/SSSSS.

Flood Inundation Mapping: Experimental real-time flood Inundation mapping services for 10% of the United States are now available via the NWS Map Viewer. Additional products and geospatial services depicting River Forecast Center and National Water Model forecasts continue to be accessible as described in the StoryMap here.

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



Hydrograph River at a Glance Download
Petaluma River at D Street Bridge Stage (ft)Observed: 5.86 ft at 4:15AM Mar 14, 2024Observed: 5.34 ft at 4:31AM Mar 14, 2024Observed: 4.46 ft at 4:56AM Mar 14, 2024Observed: 4.39 ft at 5:00AM Mar 14, 2024Observed: 4.16 ft at 5:05AM Mar 14, 2024Observed: 3.57 ft at 5:21AM Mar 14, 2024Observed: 2.99 ft at 5:38AM Mar 14, 2024Observed: 2.37 ft at 6:00AM Mar 14, 2024Observed: 2.37 ft at 8:00AM Mar 14, 2024Observed: 2.34 ft at 9:00AM Mar 14, 2024Observed: 2.37 ft at 10:00AM Mar 14, 2024Observed: 2.37 ft at 11:00AM Mar 14, 2024Observed: 3.24 ft at 12:35PM Mar 14, 2024Observed: 4.29 ft at 1:08PM Mar 14, 2024Observed: 4.54 ft at 1:16PM Mar 14, 2024Observed: 4.86 ft at 1:33PM Mar 14, 2024Observed: 5.24 ft at 2:00PM Mar 14, 2024Observed: 5.46 ft at 3:00PM Mar 14, 2024Observed: 5.26 ft at 3:30PM Mar 14, 2024Observed: 4.19 ft at 5:00PM Mar 14, 2024Observed: 3.99 ft at 5:10PM Mar 14, 2024Observed: 2.82 ft at 6:16PM Mar 14, 2024Observed: 2.57 ft at 6:33PM Mar 14, 2024Observed: 2.34 ft at 7:00PM Mar 14, 2024Observed: 2.34 ft at 8:00PM Mar 14, 2024Observed: 3.27 ft at 9:36PM Mar 14, 2024Observed: 3.99 ft at 10:18PM Mar 14, 2024Observed: 4.66 ft at 11:00PM Mar 14, 2024Observed: 4.99 ft at 11:25PM Mar 14, 2024Observed: 5.29 ft at 11:41PM Mar 14, 2024Observed: 5.88 ft at 12:15AM Mar 15, 2024Observed: 6.38 ft at 12:48AM Mar 15, 2024Observed: 6.53 ft at 1:00AM Mar 15, 2024Observed: 6.73 ft at 1:30AM Mar 15, 2024Observed: 6.91 ft at 2:00AM Mar 15, 2024Observed: 6.81 ft at 4:00AM Mar 15, 2024Observed: 5.73 ft at 4:50AM Mar 15, 2024Observed: 5.16 ft at 5:05AM Mar 15, 2024Observed: 2.94 ft at 6:13AM Mar 15, 2024Observed: 2.69 ft at 6:21AM Mar 15, 2024Observed: 2.49 ft at 6:30AM Mar 15, 2024Observed: 2.37 ft at 7:00AM Mar 15, 2024Observed: 2.37 ft at 8:00AM Mar 15, 2024Observed: 2.37 ft at 9:00AM Mar 15, 2024Observed: 2.37 ft at 10:00AM Mar 15, 2024Observed: 2.37 ft at 11:00AM Mar 15, 2024Observed: 2.37 ft at 12:00PM Mar 15, 2024Observed: 4.31 ft at 2:00PM Mar 15, 2024Observed: 4.64 ft at 2:16PM Mar 15, 2024Observed: 4.89 ft at 2:33PM Mar 15, 2024Observed: 5.16 ft at 2:58PM Mar 15, 2024Observed: 5.19 ft at 3:00PM Mar 15, 2024Observed: 5.44 ft at 3:31PM Mar 15, 2024Observed: 5.54 ft at 4:00PM Mar 15, 2024Observed: 4.91 ft at 5:53PM Mar 15, 2024Observed: 4.64 ft at 6:10PM Mar 15, 2024Observed: 4.36 ft at 6:26PM Mar 15, 2024Observed: 4.14 ft at 6:43PM Mar 15, 2024Observed: 3.67 ft at 7:16PM Mar 15, 2024Observed: 3.42 ft at 7:41PM Mar 15, 2024Observed: 3.27 ft at 8:00PM Mar 15, 2024Observed: 3.37 ft at 9:30PM Mar 15, 2024Observed: 3.77 ft at 10:00PM Mar 15, 2024Observed: 3.99 ft at 10:20PM Mar 15, 2024Observed: 4.19 ft at 10:36PM Mar 15, 2024Observed: 4.46 ft at 10:58PM Mar 15, 2024Observed: 4.69 ft at 11:26PM Mar 15, 2024Observed: 5.34 ft at 12:16AM Mar 16, 2024Observed: 5.66 ft at 12:33AM Mar 16, 2024Observed: 6.08 ft at 1:00AM Mar 16, 2024Observed: 6.36 ft at 1:23AM Mar 16, 2024Observed: 6.56 ft at 1:40AM Mar 16, 2024Observed: 6.71 ft at 2:00AM Mar 16, 2024Observed: 6.93 ft at 2:46AM Mar 16, 2024Observed: 7.01 ft at 3:00AM Mar 16, 2024Highest Observation: 7.06 ft at 4:00AM Mar 16, 2024Observed: 6.86 ft at 4:43AM Mar 16, 2024Observed: 6.71 ft at 5:00AM Mar 16, 2024Observed: 6.38 ft at 5:16AM Mar 16, 2024Observed: 5.86 ft at 5:41AM Mar 16, 2024Observed: 2.84 ft at 7:30AM Mar 16, 2024Observed: 2.34 ft at 8:00AM Mar 16, 2024Observed: 2.37 ft at 10:00AM Mar 16, 2024Observed: 2.37 ft at 11:00AM Mar 16, 2024Observed: 2.37 ft at 12:00PM Mar 16, 2024Observed: 2.37 ft at 1:00PM Mar 16, 2024Observed: 2.72 ft at 2:18PM Mar 16, 2024Observed: 3.57 ft at 3:00PM Mar 16, 2024Observed: 4.06 ft at 3:33PM Mar 16, 2024Observed: 4.49 ft at 4:00PM Mar 16, 2024Observed: 5.04 ft at 5:00PM Mar 16, 2024Observed: 5.04 ft at 6:00PM Mar 16, 2024Observed: 4.89 ft at 7:00PM Mar 16, 2024Observed: 4.69 ft at 7:35PM Mar 16, 2024Observed: 3.72 ft at 9:00PM Mar 16, 2024Observed: 3.52 ft at 9:40PM Mar 16, 2024Observed: 3.47 ft at 10:00PM Mar 16, 2024Observed: 3.57 ft at 11:00PM Mar 16, 2024Observed: 4.39 ft at 12:26AM Mar 17, 2024Observed: 4.59 ft at 12:43AM Mar 17, 2024Observed: 4.79 ft at 1:00AM Mar 17, 2024Observed: 5.19 ft at 1:41AM Mar 17, 2024Observed: 5.39 ft at 1:58AM Mar 17, 2024Observed: 5.44 ft at 2:00AM Mar 17, 2024Observed: 5.64 ft at 2:15AM Mar 17, 2024Observed: 5.91 ft at 2:40AM Mar 17, 2024Observed: 6.11 ft at 3:00AM Mar 17, 2024Observed: 6.31 ft at 3:30AM Mar 17, 2024Observed: 6.48 ft at 4:00AM Mar 17, 2024Observed: 6.51 ft at 5:00AM Mar 17, 2024Observed: 6.28 ft at 5:43AM Mar 17, 2024Observed: 6.06 ft at 6:00AM Mar 17, 2024Observed: 5.68 ft at 6:16AM Mar 17, 2024Observed: 5.06 ft at 6:41AM Mar 17, 2024Observed: 4.64 ft at 7:00AM Mar 17, 2024Observed: 3.24 ft at 8:00AM Mar 17, 2024Observed: 2.92 ft at 8:13AM Mar 17, 2024Observed: 2.57 ft at 8:30AM Mar 17, 2024Observed: 2.37 ft at 10:00AM Mar 17, 2024Observed: 2.37 ft at 11:00AM Mar 17, 2024Observed: 2.37 ft at 12:00PM Mar 17, 2024Observed: 2.37 ft at 1:00PM Mar 17, 2024Observed: 2.34 ft at 2:00PM Mar 17, 2024Observed: 2.34 ft at 3:00PM Mar 17, 2024Observed: 3.34 ft at 4:16PM Mar 17, 2024Observed: 3.92 ft at 4:41PM Mar 17, 2024Observed: 4.96 ft at 5:48PM Mar 17, 2024Observed: 5.34 ft at 6:38PM Mar 17, 2024Observed: 5.44 ft at 7:00PM Mar 17, 2024Observed: 4.79 ft at 9:00PM Mar 17, 2024Observed: 4.24 ft at 9:33PM Mar 17, 2024Observed: 3.74 ft at 10:15PM Mar 17, 2024Observed: 3.52 ft at 10:40PM Mar 17, 2024Observed: 3.44 ft at 11:00PM Mar 17, 2024Observed: 3.57 ft at 12:00AM Mar 18, 2024Observed: 3.87 ft at 1:00AM Mar 18, 2024Observed: 4.09 ft at 1:18AM Mar 18, 2024Observed: 4.54 ft at 2:00AM Mar 18, 2024Observed: 4.94 ft at 2:41AM Mar 18, 2024Observed: 5.21 ft at 3:00AM Mar 18, 2024Observed: 5.46 ft at 3:31AM Mar 18, 2024Observed: 5.83 ft at 4:00AM Mar 18, 2024Observed: 6.03 ft at 4:21AM Mar 18, 2024Observed: 6.31 ft at 5:00AM Mar 18, 2024Observed: 6.43 ft at 6:00AM Mar 18, 2024Observed: 6.01 ft at 7:00AM Mar 18, 2024Observed: 5.39 ft at 7:33AM Mar 18, 2024Observed: 4.84 ft at 7:58AM Mar 18, 2024Observed: 3.79 ft at 8:40AM Mar 18, 2024Observed: 3.09 ft at 9:13AM Mar 18, 2024Observed: 2.34 ft at 10:00AM Mar 18, 2024Observed: 2.37 ft at 12:00PM Mar 18, 2024Observed: 2.34 ft at 2:00PM Mar 18, 2024Observed: 2.34 ft at 3:00PM Mar 18, 2024Observed: 3.29 ft at 5:16PM Mar 18, 2024Observed: 3.89 ft at 5:41PM Mar 18, 2024Observed: 4.31 ft at 6:00PM Mar 18, 2024Observed: 4.61 ft at 6:15PM Mar 18, 2024Observed: 5.21 ft at 7:00PM Mar 18, 2024Observed: 5.59 ft at 8:00PM Mar 18, 2024Observed: 5.49 ft at 9:00PM Mar 18, 2024Observed: 4.36 ft at 10:33PM Mar 18, 2024Observed: 3.99 ft at 11:00PM Mar 18, 2024Observed: 3.72 ft at 11:15PM Mar 18, 2024Observed: 3.49 ft at 11:31PM Mar 18, 2024PTBC1(plotting HGIRR) Graph Created (3:45AM Mar 19, 2024)ObservedLatest observed value: 3.49 ft at 11:31 PM PDT 18-Mar-2024. Flood Stage is 8.4 ft
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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 Petaluma River at D Street Bridge. 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: 9.8
Moderate Flood Stage: 8.6
Flood Stage: 8.4
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
Zoom Level:14
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
9.8 Major Flood Stage. Water reaches elevation of C Street pump station floor height.
8.6 Moderate Flood Stage. NWS will issue a Flash Flood Warning if not already issued. Streets start to flood down to C Street. C Street sewer pump station sand-bagged.
8.4 Minor Flood Stage. Water begins going out of bank at the foot of C Street.
8 Action Stage. NWS and City of Petaluma begin to monitor the situation closely. City of Petaluma Fire Chief, Watch Commander, and Water Resources and Conservation Director notified.
About This Location Collapse

Latitude: 38.233333° N, Longitude: 122.634722° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 8.4 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.
NWS Information
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(831) 656-1725
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Page last modified: 2-Nov-2020 7:27 PM
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