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Hydrograph River at a Glance Download
Petaluma River at D Street Bridge Stage (ft)Observed: 6.38 ft at 7:00PM Jul 28, 2021Observed: 6.18 ft at 7:28PM Jul 28, 2021Observed: 5.98 ft at 7:45PM Jul 28, 2021Observed: 5.73 ft at 8:00PM Jul 28, 2021Observed: 5.49 ft at 8:10PM Jul 28, 2021Observed: 5.26 ft at 8:18PM Jul 28, 2021Observed: 5.04 ft at 8:26PM Jul 28, 2021Observed: 4.84 ft at 8:35PM Jul 28, 2021Observed: 4.64 ft at 8:43PM Jul 28, 2021Observed: 4.41 ft at 8:51PM Jul 28, 2021Observed: 4.21 ft at 9:00PM Jul 28, 2021Observed: 3.94 ft at 9:08PM Jul 28, 2021Observed: 3.69 ft at 9:16PM Jul 28, 2021Observed: 3.47 ft at 9:25PM Jul 28, 2021Observed: 3.27 ft at 9:33PM Jul 28, 2021Observed: 3.04 ft at 9:41PM Jul 28, 2021Observed: 2.84 ft at 9:50PM Jul 28, 2021Observed: 2.69 ft at 10:00PM Jul 28, 2021Observed: 2.47 ft at 10:06PM Jul 28, 2021Observed: 2.37 ft at 11:00PM Jul 28, 2021Observed: 2.37 ft at 12:00AM Jul 29, 2021Observed: 2.39 ft at 1:00AM Jul 29, 2021Observed: 2.64 ft at 1:43AM Jul 29, 2021Observed: 3.04 ft at 2:00AM Jul 29, 2021Observed: 3.29 ft at 2:16AM Jul 29, 2021Observed: 3.59 ft at 2:33AM Jul 29, 2021Observed: 3.94 ft at 2:50AM Jul 29, 2021Observed: 4.14 ft at 2:58AM Jul 29, 2021Observed: 4.16 ft at 3:00AM Jul 29, 2021Observed: 4.46 ft at 3:15AM Jul 29, 2021Observed: 4.74 ft at 3:31AM Jul 29, 2021Observed: 4.96 ft at 3:48AM Jul 29, 2021Observed: 5.16 ft at 4:00AM Jul 29, 2021Observed: 5.41 ft at 4:21AM Jul 29, 2021Observed: 5.66 ft at 4:46AM Jul 29, 2021Observed: 5.73 ft at 5:00AM Jul 29, 2021Observed: 5.68 ft at 6:00AM Jul 29, 2021Observed: 5.41 ft at 6:35AM Jul 29, 2021Observed: 5.14 ft at 7:00AM Jul 29, 2021Observed: 4.86 ft at 7:16AM Jul 29, 2021Observed: 4.46 ft at 7:33AM Jul 29, 2021Observed: 4.24 ft at 7:41AM Jul 29, 2021Observed: 4.04 ft at 7:50AM Jul 29, 2021Observed: 3.79 ft at 7:58AM Jul 29, 2021Observed: 3.59 ft at 8:06AM Jul 29, 2021Observed: 3.27 ft at 8:23AM Jul 29, 2021Observed: 2.92 ft at 8:40AM Jul 29, 2021Observed: 2.57 ft at 8:56AM Jul 29, 2021Observed: 2.54 ft at 9:00AM Jul 29, 2021Observed: 2.32 ft at 9:13AM Jul 29, 2021Observed: 2.37 ft at 10:00AM Jul 29, 2021Observed: 2.37 ft at 11:00AM Jul 29, 2021Observed: 2.34 ft at 12:00PM Jul 29, 2021Observed: 2.39 ft at 1:00PM Jul 29, 2021Observed: 2.42 ft at 2:00PM Jul 29, 2021Observed: 2.74 ft at 2:38PM Jul 29, 2021Observed: 2.94 ft at 2:46PM Jul 29, 2021Observed: 3.24 ft at 2:55PM Jul 29, 2021Observed: 3.39 ft at 3:00PM Jul 29, 2021Observed: 3.74 ft at 3:11PM Jul 29, 2021Observed: 3.99 ft at 3:20PM Jul 29, 2021Observed: 4.19 ft at 3:28PM Jul 29, 2021Observed: 4.44 ft at 3:36PM Jul 29, 2021Observed: 4.69 ft at 3:45PM Jul 29, 2021Observed: 5.04 ft at 4:00PM Jul 29, 2021Observed: 5.34 ft at 4:18PM Jul 29, 2021Observed: 5.64 ft at 4:35PM Jul 29, 2021Observed: 5.93 ft at 4:51PM Jul 29, 2021Observed: 6.08 ft at 5:00PM Jul 29, 2021Observed: 6.33 ft at 5:33PM Jul 29, 2021Observed: 6.51 ft at 6:00PM Jul 29, 2021Highest Observation: 6.66 ft at 7:00PM Jul 29, 2021Observed: 6.58 ft at 8:00PM Jul 29, 2021Observed: 6.31 ft at 8:20PM Jul 29, 2021Observed: 6.06 ft at 8:36PM Jul 29, 2021Observed: 5.68 ft at 8:53PM Jul 29, 2021Observed: 5.56 ft at 9:00PM Jul 29, 2021Observed: 5.26 ft at 9:10PM Jul 29, 2021Observed: 5.04 ft at 9:18PM Jul 29, 2021Observed: 4.76 ft at 9:26PM Jul 29, 2021Observed: 4.56 ft at 9:35PM Jul 29, 2021Observed: 4.34 ft at 9:43PM Jul 29, 2021Observed: 4.09 ft at 9:51PM Jul 29, 2021Observed: 3.84 ft at 10:00PM Jul 29, 2021Observed: 3.59 ft at 10:08PM Jul 29, 2021Observed: 3.37 ft at 10:16PM Jul 29, 2021Observed: 3.17 ft at 10:25PM Jul 29, 2021Observed: 2.97 ft at 10:33PM Jul 29, 2021Observed: 2.64 ft at 10:50PM Jul 29, 2021Observed: 2.44 ft at 10:58PM Jul 29, 2021Observed: 2.34 ft at 12:00AM Jul 30, 2021Observed: 2.37 ft at 1:00AM Jul 30, 2021Observed: 2.39 ft at 2:00AM Jul 30, 2021Observed: 2.47 ft at 3:00AM Jul 30, 2021Observed: 2.79 ft at 3:16AM Jul 30, 2021Observed: 2.99 ft at 3:25AM Jul 30, 2021Observed: 3.34 ft at 3:41AM Jul 30, 2021Observed: 3.62 ft at 3:58AM Jul 30, 2021Observed: 3.67 ft at 4:00AM Jul 30, 2021Observed: 3.94 ft at 4:15AM Jul 30, 2021Observed: 4.14 ft at 4:23AM Jul 30, 2021Observed: 4.41 ft at 4:40AM Jul 30, 2021Observed: 4.61 ft at 4:56AM Jul 30, 2021Observed: 4.69 ft at 5:00AM Jul 30, 2021Observed: 4.99 ft at 5:21AM Jul 30, 2021Observed: 5.19 ft at 5:46AM Jul 30, 2021Observed: 5.21 ft at 6:00AM Jul 30, 2021Observed: 5.31 ft at 7:00AM Jul 30, 2021Observed: 5.09 ft at 7:18AM Jul 30, 2021Observed: 4.76 ft at 7:35AM Jul 30, 2021Observed: 4.51 ft at 7:51AM Jul 30, 2021Observed: 4.44 ft at 8:00AM Jul 30, 2021Observed: 4.21 ft at 8:16AM Jul 30, 2021Observed: 3.94 ft at 8:33AM Jul 30, 2021Observed: 3.62 ft at 8:50AM Jul 30, 2021Observed: 3.47 ft at 9:00AM Jul 30, 2021Observed: 3.27 ft at 9:06AM Jul 30, 2021Observed: 2.99 ft at 9:23AM Jul 30, 2021Observed: 2.69 ft at 9:40AM Jul 30, 2021Observed: 2.34 ft at 9:56AM Jul 30, 2021Observed: 2.34 ft at 11:00AM Jul 30, 2021Observed: 2.37 ft at 12:00PM Jul 30, 2021Observed: 2.37 ft at 1:00PM Jul 30, 2021Observed: 2.37 ft at 2:00PM Jul 30, 2021Observed: 2.57 ft at 2:31PM Jul 30, 2021Observed: 2.87 ft at 2:48PM Jul 30, 2021Observed: 3.12 ft at 3:00PM Jul 30, 2021Observed: 3.34 ft at 3:13PM Jul 30, 2021Observed: 3.59 ft at 3:21PM Jul 30, 2021Observed: 4.01 ft at 3:38PM Jul 30, 2021Observed: 4.39 ft at 3:55PM Jul 30, 2021Observed: 4.54 ft at 4:00PM Jul 30, 2021Observed: 4.91 ft at 4:20PM Jul 30, 2021Observed: 5.24 ft at 4:36PM Jul 30, 2021Observed: 5.44 ft at 4:45PM Jul 30, 2021Observed: 5.68 ft at 5:00PM Jul 30, 2021Observed: 5.96 ft at 5:18PM Jul 30, 2021Observed: 6.16 ft at 5:35PM Jul 30, 2021Observed: 6.36 ft at 6:00PM Jul 30, 2021Observed: 6.58 ft at 6:50PM Jul 30, 2021Observed: 6.63 ft at 7:00PM Jul 30, 2021Observed: 6.53 ft at 8:00PM Jul 30, 2021Observed: 6.33 ft at 8:30PM Jul 30, 2021Observed: 6.13 ft at 8:55PM Jul 30, 2021Observed: 6.08 ft at 9:00PM Jul 30, 2021Observed: 5.88 ft at 9:11PM Jul 30, 2021Observed: 5.54 ft at 9:28PM Jul 30, 2021Observed: 5.34 ft at 9:36PM Jul 30, 2021Observed: 5.09 ft at 9:45PM Jul 30, 2021Observed: 4.79 ft at 10:00PM Jul 30, 2021Observed: 4.56 ft at 10:10PM Jul 30, 2021Observed: 4.36 ft at 10:18PM Jul 30, 2021Observed: 4.14 ft at 10:26PM Jul 30, 2021Observed: 3.89 ft at 10:35PM Jul 30, 2021Observed: 3.69 ft at 10:43PM Jul 30, 2021Observed: 3.49 ft at 10:51PM Jul 30, 2021Observed: 3.34 ft at 11:00PM Jul 30, 2021Observed: 3.02 ft at 11:16PM Jul 30, 2021Observed: 2.74 ft at 11:33PM Jul 30, 2021Observed: 2.44 ft at 11:50PM Jul 30, 2021Observed: 2.34 ft at 12:00AM Jul 31, 2021Observed: 2.34 ft at 1:00AM Jul 31, 2021Observed: 2.39 ft at 2:00AM Jul 31, 2021Observed: 2.39 ft at 3:00AM Jul 31, 2021Observed: 2.39 ft at 4:00AM Jul 31, 2021Observed: 2.72 ft at 4:50AM Jul 31, 2021Observed: 2.92 ft at 5:00AM Jul 31, 2021Observed: 3.17 ft at 5:15AM Jul 31, 2021Observed: 3.52 ft at 5:31AM Jul 31, 2021Observed: 3.84 ft at 5:48AM Jul 31, 2021Observed: 4.09 ft at 6:00AM Jul 31, 2021Observed: 4.29 ft at 6:13AM Jul 31, 2021Observed: 4.54 ft at 6:38AM Jul 31, 2021Observed: 4.76 ft at 7:00AM Jul 31, 2021Observed: 4.84 ft at 8:00AM Jul 31, 2021Observed: 4.59 ft at 8:35AM Jul 31, 2021Observed: 4.39 ft at 8:51AM Jul 31, 2021Observed: 4.29 ft at 9:00AM Jul 31, 2021Observed: 4.04 ft at 9:16AM Jul 31, 2021Observed: 3.79 ft at 9:33AM Jul 31, 2021Observed: 3.49 ft at 9:50AM Jul 31, 2021Observed: 3.37 ft at 10:00AM Jul 31, 2021Observed: 3.12 ft at 10:15AM Jul 31, 2021Observed: 2.89 ft at 10:31AM Jul 31, 2021Observed: 2.69 ft at 10:56AM Jul 31, 2021Observed: 2.44 ft at 11:21AM Jul 31, 2021Observed: 2.37 ft at 12:00PM Jul 31, 2021Observed: 2.37 ft at 1:00PM Jul 31, 2021Observed: 2.39 ft at 2:00PM Jul 31, 2021Observed: 2.69 ft at 2:50PM Jul 31, 2021Observed: 2.87 ft at 3:00PM Jul 31, 2021Observed: 3.09 ft at 3:15PM Jul 31, 2021Observed: 3.44 ft at 3:31PM Jul 31, 2021Observed: 3.74 ft at 3:48PM Jul 31, 2021Observed: 3.96 ft at 4:00PM Jul 31, 2021Observed: 4.19 ft at 4:13PM Jul 31, 2021Observed: 4.51 ft at 4:30PM Jul 31, 2021Observed: 4.71 ft at 4:38PM Jul 31, 2021Observed: 4.99 ft at 4:55PM Jul 31, 2021Observed: 5.14 ft at 5:00PM Jul 31, 2021Observed: 5.34 ft at 5:11PM Jul 31, 2021Observed: 5.59 ft at 5:28PM Jul 31, 2021Observed: 5.83 ft at 5:45PM Jul 31, 2021Observed: 6.06 ft at 6:00PM Jul 31, 2021Observed: 6.28 ft at 6:26PM Jul 31, 2021Observed: 6.43 ft at 7:00PM Jul 31, 2021Observed: 6.43 ft at 8:00PM Jul 31, 2021Observed: 6.23 ft at 8:40PM Jul 31, 2021Observed: 6.16 ft at 9:00PM Jul 31, 2021Observed: 5.96 ft at 9:21PM Jul 31, 2021Observed: 5.71 ft at 9:38PM Jul 31, 2021Observed: 5.39 ft at 9:55PM Jul 31, 2021Observed: 5.29 ft at 10:00PM Jul 31, 2021Observed: 5.04 ft at 10:11PM Jul 31, 2021Observed: 4.74 ft at 10:28PM Jul 31, 2021Observed: 4.51 ft at 10:36PM Jul 31, 2021Observed: 4.31 ft at 10:45PM Jul 31, 2021Observed: 4.11 ft at 10:53PM Jul 31, 2021Observed: 4.01 ft at 11:00PM Jul 31, 2021Observed: 3.79 ft at 11:10PM Jul 31, 2021Observed: 3.49 ft at 11:26PM Jul 31, 2021Observed: 3.27 ft at 11:35PM Jul 31, 2021Observed: 2.94 ft at 11:51PM Jul 31, 2021Observed: 2.82 ft at 12:00AM Aug 01, 2021Observed: 2.49 ft at 12:16AM Aug 01, 2021Observed: 2.34 ft at 1:00AM Aug 01, 2021Observed: 2.39 ft at 2:00AM Aug 01, 2021Observed: 2.39 ft at 3:00AM Aug 01, 2021Observed: 2.39 ft at 4:00AM Aug 01, 2021Observed: 2.39 ft at 5:00AM Aug 01, 2021Observed: 2.39 ft at 6:00AM Aug 01, 2021Observed: 2.62 ft at 6:23AM Aug 01, 2021Observed: 2.94 ft at 6:40AM Aug 01, 2021Observed: 3.27 ft at 6:56AM Aug 01, 2021Observed: 3.32 ft at 7:00AM Aug 01, 2021Observed: 3.54 ft at 7:13AM Aug 01, 2021Observed: 3.74 ft at 7:30AM Aug 01, 2021Observed: 3.99 ft at 7:46AM Aug 01, 2021Observed: 4.16 ft at 8:00AM Aug 01, 2021Observed: 4.36 ft at 8:20AM Aug 01, 2021Observed: 4.51 ft at 8:56AM Aug 01, 2021Observed: 4.54 ft at 9:00AM Aug 01, 2021Observed: 4.34 ft at 10:00AM Aug 01, 2021Observed: 4.09 ft at 10:25AM Aug 01, 2021Observed: 3.84 ft at 10:41AM Aug 01, 2021Observed: 3.69 ft at 11:00AM Aug 01, 2021Observed: 3.44 ft at 11:23AM Aug 01, 2021Observed: 3.19 ft at 11:40AM Aug 01, 2021Observed: 2.99 ft at 11:56AM Aug 01, 2021Observed: 2.69 ft at 12:21PM Aug 01, 2021Observed: 2.49 ft at 12:46PM Aug 01, 2021Observed: 2.47 ft at 1:00PM Aug 01, 2021Observed: 2.37 ft at 2:00PM Aug 01, 2021Observed: 2.47 ft at 3:00PM Aug 01, 2021Observed: 2.79 ft at 3:25PM Aug 01, 2021Observed: 3.02 ft at 3:50PM Aug 01, 2021Observed: 3.17 ft at 4:00PM Aug 01, 2021Observed: 3.44 ft at 4:23PM Aug 01, 2021Observed: 3.69 ft at 4:40PM Aug 01, 2021Observed: 4.01 ft at 4:56PM Aug 01, 2021Observed: 4.09 ft at 5:00PM Aug 01, 2021Observed: 4.46 ft at 5:21PM Aug 01, 2021Observed: 4.71 ft at 5:38PM Aug 01, 2021Observed: 5.04 ft at 5:55PM Aug 01, 2021Observed: 5.16 ft at 6:00PM Aug 01, 2021Observed: 5.36 ft at 6:20PM Aug 01, 2021Observed: 5.64 ft at 6:45PM Aug 01, 2021Observed: 5.86 ft at 7:00PM Aug 01, 2021Observed: 6.08 ft at 7:26PM Aug 01, 2021Observed: 6.28 ft at 7:51PM Aug 01, 2021Observed: 6.33 ft at 8:00PM Aug 01, 2021Observed: 6.41 ft at 9:00PM Aug 01, 2021Observed: 6.16 ft at 9:40PM Aug 01, 2021Observed: 6.06 ft at 10:00PM Aug 01, 2021Observed: 5.78 ft at 10:21PM Aug 01, 2021Observed: 5.54 ft at 10:38PM Aug 01, 2021Observed: 5.34 ft at 10:46PM Aug 01, 2021Observed: 5.11 ft at 11:00PM Aug 01, 2021Observed: 4.84 ft at 11:11PM Aug 01, 2021Observed: 4.64 ft at 11:20PM Aug 01, 2021Observed: 4.26 ft at 11:36PM Aug 01, 2021Observed: 4.04 ft at 11:45PM Aug 01, 2021Observed: 3.74 ft at 12:00AM Aug 02, 2021Observed: 3.37 ft at 12:18AM Aug 02, 2021Observed: 3.02 ft at 12:35AM Aug 02, 2021Observed: 2.69 ft at 12:51AM Aug 02, 2021Observed: 2.54 ft at 1:00AM Aug 02, 2021Observed: 2.32 ft at 1:08AM Aug 02, 2021Observed: 2.34 ft at 2:00AM Aug 02, 2021Observed: 2.34 ft at 3:00AM Aug 02, 2021Observed: 2.37 ft at 4:00AM Aug 02, 2021Observed: 2.39 ft at 5:00AM Aug 02, 2021Observed: 2.39 ft at 6:00AM Aug 02, 2021Observed: 2.39 ft at 7:00AM Aug 02, 2021Observed: 2.64 ft at 7:40AM Aug 02, 2021Observed: 2.97 ft at 7:56AM Aug 02, 2021Observed: 3.07 ft at 8:00AM Aug 02, 2021Observed: 3.27 ft at 8:13AM Aug 02, 2021Observed: 3.47 ft at 8:21AM Aug 02, 2021Observed: 3.74 ft at 8:38AM Aug 02, 2021Observed: 3.99 ft at 8:55AM Aug 02, 2021Observed: 4.09 ft at 9:00AM Aug 02, 2021Observed: 4.29 ft at 9:36AM Aug 02, 2021Observed: 4.49 ft at 10:00AM Aug 02, 2021Observed: 4.49 ft at 11:00AM Aug 02, 2021Observed: 4.29 ft at 11:25AM Aug 02, 2021Observed: 4.04 ft at 11:58AM Aug 02, 2021Observed: 4.09 ft at 12:00PM Aug 02, 2021Observed: 3.87 ft at 12:40PM Aug 02, 2021Observed: 3.77 ft at 1:00PM Aug 02, 2021Observed: 3.57 ft at 1:21PM Aug 02, 2021Observed: 3.29 ft at 1:46PM Aug 02, 2021Observed: 3.14 ft at 2:00PM Aug 02, 2021Observed: 2.92 ft at 2:11PM Aug 02, 2021Observed: 2.69 ft at 2:36PM Aug 02, 2021Observed: 2.59 ft at 3:00PM Aug 02, 2021Observed: 2.59 ft at 4:00PM Aug 02, 2021Observed: 2.84 ft at 4:33PM Aug 02, 2021Observed: 3.09 ft at 4:50PM Aug 02, 2021Observed: 3.32 ft at 5:00PM Aug 02, 2021Observed: 3.54 ft at 5:15PM Aug 02, 2021Observed: 3.89 ft at 5:40PM Aug 02, 2021PTBC1(plotting HGIRR) Graph Created (6:00PM Aug 2, 2021)ObservedLatest observed value: 3.89 ft at 5:40 PM PDT 2-Aug-2021. 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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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
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Page last modified: 2-Nov-2020 7:27 PM
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