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Hydrograph River at a Glance Download
Arroyo Simi near Simi Valley Stage (ft)Observed: 2.7 ft at 5:00AM Apr 01, 2020Observed: 2.7 ft at 6:00AM Apr 01, 2020Observed: 2.7 ft at 7:00AM Apr 01, 2020Observed: 2.7 ft at 8:00AM Apr 01, 2020Observed: 2.7 ft at 9:00AM Apr 01, 2020Observed: 2.7 ft at 10:00AM Apr 01, 2020Observed: 2.7 ft at 11:00AM Apr 01, 2020Observed: 2.7 ft at 12:00PM Apr 01, 2020Observed: 2.7 ft at 1:00PM Apr 01, 2020Observed: 2.7 ft at 2:00PM Apr 01, 2020Observed: 2.7 ft at 3:00PM Apr 01, 2020Observed: 2.7 ft at 4:00PM Apr 01, 2020Observed: 2.7 ft at 5:00PM Apr 01, 2020Observed: 2.7 ft at 6:00PM Apr 01, 2020Observed: 2.7 ft at 7:00PM Apr 01, 2020Observed: 2.7 ft at 8:00PM Apr 01, 2020Observed: 2.7 ft at 10:00PM Apr 01, 2020Observed: 2.7 ft at 11:00PM Apr 01, 2020Observed: 2.7 ft at 12:00AM Apr 02, 2020Observed: 2.7 ft at 2:00AM Apr 02, 2020Observed: 2.7 ft at 3:00AM Apr 02, 2020Observed: 2.7 ft at 4:00AM Apr 02, 2020Observed: 2.7 ft at 5:00AM Apr 02, 2020Observed: 2.7 ft at 6:00AM Apr 02, 2020Observed: 2.7 ft at 7:00AM Apr 02, 2020Observed: 2.7 ft at 8:00AM Apr 02, 2020Observed: 2.7 ft at 9:00AM Apr 02, 2020Observed: 2.7 ft at 10:00AM Apr 02, 2020Observed: 2.7 ft at 11:00AM Apr 02, 2020Observed: 2.7 ft at 12:00PM Apr 02, 2020Observed: 2.7 ft at 1:00PM Apr 02, 2020Observed: 2.7 ft at 2:00PM Apr 02, 2020Observed: 2.7 ft at 3:00PM Apr 02, 2020Observed: 2.7 ft at 4:00PM Apr 02, 2020Observed: 2.7 ft at 5:00PM Apr 02, 2020Observed: 2.7 ft at 6:00PM Apr 02, 2020Observed: 2.7 ft at 7:00PM Apr 02, 2020Observed: 2.7 ft at 8:00PM Apr 02, 2020Observed: 2.7 ft at 9:00PM Apr 02, 2020Observed: 2.7 ft at 10:00PM Apr 02, 2020Observed: 2.7 ft at 11:00PM Apr 02, 2020Observed: 2.7 ft at 12:00AM Apr 03, 2020Observed: 2.7 ft at 2:00AM Apr 03, 2020Observed: 2.7 ft at 3:00AM Apr 03, 2020Observed: 2.7 ft at 4:00AM Apr 03, 2020Observed: 2.7 ft at 5:00AM Apr 03, 2020Observed: 2.7 ft at 6:00AM Apr 03, 2020Observed: 2.7 ft at 7:00AM Apr 03, 2020Observed: 2.7 ft at 8:00AM Apr 03, 2020Observed: 2.7 ft at 9:00AM Apr 03, 2020Observed: 2.7 ft at 10:00AM Apr 03, 2020Observed: 2.7 ft at 11:00AM Apr 03, 2020Observed: 2.7 ft at 12:00PM Apr 03, 2020Observed: 2.7 ft at 1:00PM Apr 03, 2020Observed: 2.7 ft at 2:00PM Apr 03, 2020Observed: 2.7 ft at 3:00PM Apr 03, 2020Observed: 2.7 ft at 4:00PM Apr 03, 2020Observed: 2.7 ft at 5:00PM Apr 03, 2020Observed: 2.7 ft at 6:00PM Apr 03, 2020Observed: 2.7 ft at 7:00PM Apr 03, 2020Observed: 2.7 ft at 8:00PM Apr 03, 2020Observed: 2.7 ft at 9:00PM Apr 03, 2020Observed: 2.7 ft at 10:00PM Apr 03, 2020Observed: 2.7 ft at 11:00PM Apr 03, 2020Observed: 2.7 ft at 12:00AM Apr 04, 2020Observed: 2.7 ft at 2:00AM Apr 04, 2020Observed: 2.7 ft at 3:00AM Apr 04, 2020Observed: 2.7 ft at 4:00AM Apr 04, 2020Observed: 2.7 ft at 5:00AM Apr 04, 2020Observed: 2.7 ft at 6:00AM Apr 04, 2020Observed: 2.7 ft at 7:00AM Apr 04, 2020Observed: 2.7 ft at 8:00AM Apr 04, 2020Observed: 2.7 ft at 9:00AM Apr 04, 2020Observed: 2.7 ft at 10:00AM Apr 04, 2020Observed: 2.7 ft at 11:00AM Apr 04, 2020Observed: 2.7 ft at 12:00PM Apr 04, 2020Observed: 2.7 ft at 1:00PM Apr 04, 2020Observed: 2.7 ft at 2:00PM Apr 04, 2020Observed: 2.7 ft at 3:00PM Apr 04, 2020Observed: 2.7 ft at 4:00PM Apr 04, 2020Observed: 2.7 ft at 5:00PM Apr 04, 2020Observed: 2.7 ft at 6:00PM Apr 04, 2020Observed: 2.7 ft at 7:00PM Apr 04, 2020Observed: 2.7 ft at 8:00PM Apr 04, 2020Observed: 2.7 ft at 9:00PM Apr 04, 2020Observed: 2.7 ft at 10:00PM Apr 04, 2020Observed: 2.7 ft at 11:00PM Apr 04, 2020Observed: 2.7 ft at 12:00AM Apr 05, 2020Observed: 2.7 ft at 2:00AM Apr 05, 2020Observed: 2.7 ft at 3:00AM Apr 05, 2020Observed: 2.7 ft at 4:00AM Apr 05, 2020Observed: 2.7 ft at 5:00AM Apr 05, 2020Observed: 2.7 ft at 6:00AM Apr 05, 2020Observed: 2.7 ft at 7:00AM Apr 05, 2020Observed: 2.7 ft at 8:00AM Apr 05, 2020Observed: 2.7 ft at 9:00AM Apr 05, 2020Observed: 2.7 ft at 11:00AM Apr 05, 2020Observed: 2.7 ft at 12:00PM Apr 05, 2020Observed: 2.7 ft at 1:00PM Apr 05, 2020Observed: 2.7 ft at 2:00PM Apr 05, 2020Observed: 2.7 ft at 4:00PM Apr 05, 2020Observed: 2.7 ft at 5:00PM Apr 05, 2020Observed: 2.7 ft at 6:00PM Apr 05, 2020Observed: 2.7 ft at 7:00PM Apr 05, 2020Observed: 2.7 ft at 8:00PM Apr 05, 2020Observed: 2.7 ft at 9:00PM Apr 05, 2020Observed: 2.7 ft at 10:00PM Apr 05, 2020Observed: 2.7 ft at 11:00PM Apr 05, 2020Observed: 2.7 ft at 12:00AM Apr 06, 2020Observed: 2.76 ft at 1:39AM Apr 06, 2020Observed: 2.81 ft at 1:59AM Apr 06, 2020Observed: 2.81 ft at 2:00AM Apr 06, 2020Observed: 2.93 ft at 2:19AM Apr 06, 2020Observed: 2.96 ft at 2:24AM Apr 06, 2020Observed: 3.02 ft at 2:34AM Apr 06, 2020Observed: 3.12 ft at 2:49AM Apr 06, 2020Observed: 3.2 ft at 2:59AM Apr 06, 2020Observed: 3.23 ft at 3:00AM Apr 06, 2020Observed: 3.32 ft at 3:04AM Apr 06, 2020Observed: 3.47 ft at 3:09AM Apr 06, 2020Observed: 3.49 ft at 4:00AM Apr 06, 2020Observed: 3.42 ft at 4:14AM Apr 06, 2020Observed: 3.34 ft at 4:34AM Apr 06, 2020Observed: 3.43 ft at 4:49AM Apr 06, 2020Observed: 3.47 ft at 4:54AM Apr 06, 2020Observed: 3.48 ft at 5:00AM Apr 06, 2020Observed: 3.53 ft at 5:24AM Apr 06, 2020Observed: 3.62 ft at 5:39AM Apr 06, 2020Observed: 3.72 ft at 5:44AM Apr 06, 2020Observed: 3.79 ft at 5:49AM Apr 06, 2020Observed: 3.85 ft at 5:59AM Apr 06, 2020Observed: 3.85 ft at 6:00AM Apr 06, 2020Observed: 3.77 ft at 6:29AM Apr 06, 2020Observed: 3.72 ft at 6:34AM Apr 06, 2020Observed: 3.67 ft at 6:39AM Apr 06, 2020Observed: 3.62 ft at 6:44AM Apr 06, 2020Observed: 3.58 ft at 6:49AM Apr 06, 2020Observed: 3.54 ft at 6:54AM Apr 06, 2020Observed: 3.5 ft at 6:59AM Apr 06, 2020Observed: 3.5 ft at 7:00AM Apr 06, 2020Observed: 3.45 ft at 7:09AM Apr 06, 2020Observed: 3.39 ft at 7:24AM Apr 06, 2020Observed: 3.3 ft at 7:49AM Apr 06, 2020Observed: 3.26 ft at 8:00AM Apr 06, 2020Observed: 3.35 ft at 9:00AM Apr 06, 2020Observed: 3.42 ft at 9:19AM Apr 06, 2020Observed: 3.5 ft at 9:24AM Apr 06, 2020Observed: 3.6 ft at 9:29AM Apr 06, 2020Observed: 3.54 ft at 9:54AM Apr 06, 2020Observed: 3.5 ft at 9:59AM Apr 06, 2020Observed: 3.5 ft at 10:00AM Apr 06, 2020Observed: 3.4 ft at 10:29AM Apr 06, 2020Observed: 3.34 ft at 10:49AM Apr 06, 2020Observed: 3.3 ft at 10:59AM Apr 06, 2020Observed: 3.3 ft at 11:00AM Apr 06, 2020Observed: 3.25 ft at 11:14AM Apr 06, 2020Observed: 3.2 ft at 11:44AM Apr 06, 2020Observed: 3.19 ft at 12:00PM Apr 06, 2020Observed: 3.14 ft at 12:49PM Apr 06, 2020Observed: 3.13 ft at 1:00PM Apr 06, 2020Observed: 3.08 ft at 1:54PM Apr 06, 2020Observed: 3.07 ft at 2:00PM Apr 06, 2020Observed: 3.02 ft at 2:24PM Apr 06, 2020Observed: 2.97 ft at 2:59PM Apr 06, 2020Observed: 2.97 ft at 3:00PM Apr 06, 2020Observed: 2.92 ft at 3:49PM Apr 06, 2020Observed: 2.91 ft at 4:00PM Apr 06, 2020Observed: 2.88 ft at 5:00PM Apr 06, 2020Observed: 2.87 ft at 6:00PM Apr 06, 2020Observed: 2.84 ft at 7:00PM Apr 06, 2020Observed: 2.82 ft at 8:00PM Apr 06, 2020Observed: 2.8 ft at 9:00PM Apr 06, 2020Observed: 2.77 ft at 11:00PM Apr 06, 2020Observed: 2.77 ft at 12:00AM Apr 07, 2020Observed: 2.75 ft at 2:00AM Apr 07, 2020Observed: 2.75 ft at 3:00AM Apr 07, 2020Observed: 2.74 ft at 4:00AM Apr 07, 2020Observed: 2.74 ft at 5:00AM Apr 07, 2020Observed: 2.74 ft at 6:00AM Apr 07, 2020Observed: 2.73 ft at 7:00AM Apr 07, 2020Observed: 2.73 ft at 8:00AM Apr 07, 2020Observed: 2.73 ft at 9:00AM Apr 07, 2020Observed: 2.73 ft at 10:00AM Apr 07, 2020Observed: 2.73 ft at 11:00AM Apr 07, 2020Observed: 2.73 ft at 12:00PM Apr 07, 2020Observed: 2.72 ft at 1:00PM Apr 07, 2020Observed: 2.72 ft at 2:00PM Apr 07, 2020Observed: 2.72 ft at 3:00PM Apr 07, 2020Observed: 2.72 ft at 4:00PM Apr 07, 2020Observed: 2.77 ft at 4:29PM Apr 07, 2020Observed: 2.82 ft at 4:34PM Apr 07, 2020Observed: 2.92 ft at 4:39PM Apr 07, 2020Observed: 3.01 ft at 4:44PM Apr 07, 2020Observed: 3.06 ft at 4:49PM Apr 07, 2020Observed: 3.2 ft at 5:09PM Apr 07, 2020Observed: 3.36 ft at 5:14PM Apr 07, 2020Observed: 3.49 ft at 5:19PM Apr 07, 2020Observed: 3.48 ft at 6:00PM Apr 07, 2020Observed: 3.57 ft at 6:09PM Apr 07, 2020Observed: 3.59 ft at 6:14PM Apr 07, 2020Observed: 3.54 ft at 7:00PM Apr 07, 2020Observed: 3.68 ft at 7:54PM Apr 07, 2020Observed: 3.73 ft at 7:59PM Apr 07, 2020Observed: 3.78 ft at 8:00PM Apr 07, 2020Observed: 3.87 ft at 8:04PM Apr 07, 2020Highest Observation: 3.94 ft at 8:29PM Apr 07, 2020Observed: 3.86 ft at 8:54PM Apr 07, 2020Observed: 3.86 ft at 9:00PM Apr 07, 2020Observed: 3.81 ft at 9:34PM Apr 07, 2020Observed: 3.88 ft at 9:49PM Apr 07, 2020Observed: 3.91 ft at 9:54PM Apr 07, 2020Observed: 3.91 ft at 10:00PM Apr 07, 2020Observed: 3.82 ft at 10:09PM Apr 07, 2020Observed: 3.77 ft at 10:14PM Apr 07, 2020Observed: 3.71 ft at 10:19PM Apr 07, 2020Observed: 3.66 ft at 10:24PM Apr 07, 2020Observed: 3.61 ft at 10:29PM Apr 07, 2020Observed: 3.44 ft at 10:54PM Apr 07, 2020Observed: 3.42 ft at 11:00PM Apr 07, 2020Observed: 3.36 ft at 11:19PM Apr 07, 2020Observed: 3.32 ft at 11:34PM Apr 07, 2020Observed: 3.29 ft at 12:00AM Apr 08, 2020Observed: 3.19 ft at 12:39AM Apr 08, 2020Observed: 3.05 ft at 1:54AM Apr 08, 2020Observed: 3.04 ft at 2:00AM Apr 08, 2020Observed: 2.99 ft at 2:34AM Apr 08, 2020Observed: 2.97 ft at 3:00AM Apr 08, 2020Observed: 2.92 ft at 3:49AM Apr 08, 2020Observed: 2.92 ft at 4:00AM Apr 08, 2020Observed: 2.88 ft at 5:00AM Apr 08, 2020Observed: 2.86 ft at 6:00AM Apr 08, 2020Observed: 2.82 ft at 8:00AM Apr 08, 2020Observed: 2.81 ft at 9:00AM Apr 08, 2020Observed: 2.8 ft at 10:00AM Apr 08, 2020Observed: 2.79 ft at 11:00AM Apr 08, 2020Observed: 2.78 ft at 12:00PM Apr 08, 2020Observed: 2.77 ft at 1:00PM Apr 08, 2020Observed: 2.77 ft at 2:00PM Apr 08, 2020Observed: 2.77 ft at 3:00PM Apr 08, 2020Observed: 2.78 ft at 4:00PM Apr 08, 2020Observed: 2.8 ft at 5:00PM Apr 08, 2020Observed: 2.79 ft at 6:00PM Apr 08, 2020Observed: 2.76 ft at 8:00PM Apr 08, 2020Observed: 2.75 ft at 9:00PM Apr 08, 2020Observed: 2.74 ft at 10:00PM Apr 08, 2020Observed: 2.74 ft at 11:00PM Apr 08, 2020Observed: 2.74 ft at 12:00AM Apr 09, 2020Observed: 2.74 ft at 2:00AM Apr 09, 2020Observed: 2.74 ft at 3:00AM Apr 09, 2020Observed: 2.8 ft at 3:54AM Apr 09, 2020Observed: 2.82 ft at 4:00AM Apr 09, 2020Observed: 2.92 ft at 4:24AM Apr 09, 2020Observed: 2.97 ft at 4:59AM Apr 09, 2020Observed: 3.02 ft at 5:09AM Apr 09, 2020Observed: 3.08 ft at 5:29AM Apr 09, 2020Observed: 3.11 ft at 6:00AM Apr 09, 2020Observed: 3.11 ft at 7:00AM Apr 09, 2020Observed: 3.1 ft at 8:00AM Apr 09, 2020Observed: 3.12 ft at 9:00AM Apr 09, 2020Observed: 3.14 ft at 10:00AM Apr 09, 2020Observed: 3.13 ft at 11:00AM Apr 09, 2020Observed: 3.14 ft at 12:00PM Apr 09, 2020Observed: 3.2 ft at 12:34PM Apr 09, 2020Observed: 3.22 ft at 1:00PM Apr 09, 2020Observed: 3.33 ft at 1:29PM Apr 09, 2020Observed: 3.38 ft at 1:49PM Apr 09, 2020Observed: 3.41 ft at 2:00PM Apr 09, 2020Observed: 3.46 ft at 2:44PM Apr 09, 2020Observed: 3.47 ft at 3:00PM Apr 09, 2020Observed: 3.52 ft at 3:19PM Apr 09, 2020Observed: 3.57 ft at 3:29PM Apr 09, 2020Observed: 3.61 ft at 4:00PM Apr 09, 2020Observed: 3.63 ft at 5:00PM Apr 09, 2020Observed: 3.79 ft at 5:24PM Apr 09, 2020Observed: 3.83 ft at 5:44PM Apr 09, 2020Observed: 3.85 ft at 6:00PM Apr 09, 2020Observed: 3.8 ft at 6:34PM Apr 09, 2020Observed: 3.76 ft at 7:00PM Apr 09, 2020Observed: 3.7 ft at 7:19PM Apr 09, 2020Observed: 3.64 ft at 7:34PM Apr 09, 2020Observed: 3.61 ft at 7:44PM Apr 09, 2020Observed: 3.55 ft at 7:59PM Apr 09, 2020Observed: 3.55 ft at 8:00PM Apr 09, 2020Observed: 3.45 ft at 8:34PM Apr 09, 2020Observed: 3.4 ft at 8:54PM Apr 09, 2020Observed: 3.4 ft at 9:00PM Apr 09, 2020Observed: 3.3 ft at 9:49PM Apr 09, 2020Observed: 3.28 ft at 10:00PM Apr 09, 2020Observed: 3.23 ft at 10:34PM Apr 09, 2020Observed: 3.2 ft at 11:00PM Apr 09, 2020Observed: 3.18 ft at 12:00AM Apr 10, 2020Observed: 3.31 ft at 2:00AM Apr 10, 2020Observed: 3.25 ft at 2:59AM Apr 10, 2020Observed: 3.25 ft at 3:00AM Apr 10, 2020Observed: 3.16 ft at 4:00AM Apr 10, 2020Ventura County WPDASNC1(plotting HGIRR) Graph Created (4:39AM Apr 10, 2020)ObservedLatest observed value: 3.16 ft at 4:00 AM PDT 10-Apr-2020.
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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 Arroyo Simi near Simi Valley. During times of high water, forecast crest information can be found in the text products.
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Downstream Gauge Downstream Gauge - at CSUCI Bridge
Flood Categories (in feet)
Not Available

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.

For more information on your flood risk go to www.floodsmart.gov.

Zoom Level:14
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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: 34.277500° N, Longitude: 118.795556° 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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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
Los Angeles/Oxnard Weather Forecast Office
520 North Elevar Street
Oxnard, CA 93030
(805) 988-6610
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Page last modified: 1-Mar-2019 12:32 AM
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