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Hydrograph River at a Glance Download
Sleepy Hollow Creek at RVFD Fire Station 20 Stage (ft)Observed: 2.23 ft at 1:15AM Oct 20, 2021Observed: 2.23 ft at 1:20AM Oct 20, 2021Observed: 2.23 ft at 1:15PM Oct 20, 2021Observed: 2.23 ft at 1:20PM Oct 20, 2021Observed: 2.23 ft at 1:15AM Oct 21, 2021Observed: 2.23 ft at 1:20AM Oct 21, 2021Observed: 2.23 ft at 1:15PM Oct 21, 2021Observed: 2.23 ft at 1:20PM Oct 21, 2021Observed: 2.24 ft at 1:15AM Oct 22, 2021Observed: 2.24 ft at 1:20AM Oct 22, 2021Observed: 2.23 ft at 1:15PM Oct 22, 2021Observed: 2.23 ft at 1:20PM Oct 22, 2021Observed: 2.24 ft at 1:15AM Oct 23, 2021Observed: 2.24 ft at 1:20AM Oct 23, 2021Observed: 2.23 ft at 1:15PM Oct 23, 2021Observed: 2.23 ft at 1:20PM Oct 23, 2021Observed: 2.23 ft at 1:15AM Oct 24, 2021Observed: 2.23 ft at 1:20AM Oct 24, 2021Observed: 2.4 ft at 4:58AM Oct 24, 2021Observed: 2.4 ft at 5:00AM Oct 24, 2021Observed: 2.71 ft at 5:13AM Oct 24, 2021Observed: 2.71 ft at 5:15AM Oct 24, 2021Observed: 2.83 ft at 5:36AM Oct 24, 2021Observed: 2.83 ft at 5:40AM Oct 24, 2021Observed: 2.98 ft at 5:51AM Oct 24, 2021Observed: 2.98 ft at 5:55AM Oct 24, 2021Observed: 3.31 ft at 6:06AM Oct 24, 2021Observed: 3.31 ft at 6:10AM Oct 24, 2021Observed: 3.48 ft at 6:26AM Oct 24, 2021Observed: 3.48 ft at 6:30AM Oct 24, 2021Observed: 3.34 ft at 6:41AM Oct 24, 2021Observed: 3.34 ft at 6:45AM Oct 24, 2021Observed: 3.23 ft at 6:58AM Oct 24, 2021Observed: 3.23 ft at 7:00AM Oct 24, 2021Observed: 3.46 ft at 7:13AM Oct 24, 2021Observed: 3.46 ft at 7:15AM Oct 24, 2021Observed: 3.31 ft at 7:28AM Oct 24, 2021Observed: 3.31 ft at 7:30AM Oct 24, 2021Observed: 3.59 ft at 7:43AM Oct 24, 2021Observed: 3.59 ft at 7:45AM Oct 24, 2021Observed: 3.86 ft at 7:58AM Oct 24, 2021Observed: 3.86 ft at 8:00AM Oct 24, 2021Observed: 4.05 ft at 8:13AM Oct 24, 2021Observed: 4.05 ft at 8:15AM Oct 24, 2021Observed: 3.95 ft at 8:30AM Oct 24, 2021Observed: 3.95 ft at 8:35AM Oct 24, 2021Observed: 4.12 ft at 8:45AM Oct 24, 2021Observed: 4.12 ft at 8:50AM Oct 24, 2021Observed: 4.29 ft at 9:05AM Oct 24, 2021Observed: 4.29 ft at 9:10AM Oct 24, 2021Observed: 4.44 ft at 9:21AM Oct 24, 2021Observed: 4.44 ft at 9:25AM Oct 24, 2021Observed: 4.3 ft at 9:37AM Oct 24, 2021Observed: 4.31 ft at 9:40AM Oct 24, 2021Observed: 5 ft at 9:52AM Oct 24, 2021Observed: 5 ft at 9:55AM Oct 24, 2021Observed: 4.73 ft at 10:07AM Oct 24, 2021Observed: 4.59 ft at 10:22AM Oct 24, 2021Observed: 4.73 ft at 10:30AM Oct 24, 2021Observed: 4.59 ft at 10:35AM Oct 24, 2021Observed: 4.48 ft at 10:37AM Oct 24, 2021Observed: 4.48 ft at 10:40AM Oct 24, 2021Observed: 4.63 ft at 10:52AM Oct 24, 2021Observed: 4.47 ft at 11:07AM Oct 24, 2021Observed: 4.47 ft at 11:20AM Oct 24, 2021Observed: 4.68 ft at 11:23AM Oct 24, 2021Observed: 4.68 ft at 11:25AM Oct 24, 2021Observed: 4.9 ft at 11:38AM Oct 24, 2021Observed: 4.9 ft at 11:50AM Oct 24, 2021Observed: 5.35 ft at 11:53AM Oct 24, 2021Observed: 5.35 ft at 11:55AM Oct 24, 2021Observed: 6.06 ft at 12:08PM Oct 24, 2021Observed: 6.06 ft at 12:10PM Oct 24, 2021Observed: 6.35 ft at 12:23PM Oct 24, 2021Observed: 6.35 ft at 12:30PM Oct 24, 2021Observed: 6.74 ft at 12:38PM Oct 24, 2021Observed: 6.74 ft at 12:50PM Oct 24, 2021Observed: 7.18 ft at 12:53PM Oct 24, 2021Observed: 7.18 ft at 12:55PM Oct 24, 2021Observed: 7.57 ft at 1:08PM Oct 24, 2021Observed: 7.32 ft at 1:15PM Oct 24, 2021Observed: 7.32 ft at 1:20PM Oct 24, 2021Observed: 7.58 ft at 1:30PM Oct 24, 2021Observed: 7.58 ft at 1:40PM Oct 24, 2021Observed: 7.43 ft at 1:45PM Oct 24, 2021Observed: 7.43 ft at 1:50PM Oct 24, 2021Observed: 7.81 ft at 2:00PM Oct 24, 2021Highest Observation: 7.92 ft at 2:15PM Oct 24, 2021Highest Observation: 7.92 ft at 2:30PM Oct 24, 2021SYIC1(plotting HGIRR) Graph Created (2:45PM Oct 24, 2021)ObservedLatest observed value: 7.92 ft at 2:30 PM PDT 24-Oct-2021. Flood Stage is 7.8 ft
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Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Graphical forecasts are not available for the Sleepy Hollow Creek at RVFD Fire Station 20. 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: 8.8
Flood Stage: 7.8
Action Stage: 5.3
Low Stage (in feet): -9999

Historic Crests
Currently none available.

Recent Crests
Currently none available.

Low Water Records
Currently none available.
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Gauge LocationGauge Map Marker
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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
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9.8 Major Flood Stage. Ross Valley Fire Station 20 flooded along with surrounding neighborhood. Arroyo Avenue, Butterfield Road, and other local roadways flooded, making travel difficult and dangerous.
8.8 Moderate flood
7.8 Minor Flood Stage. Culvert beneath Arroyo Avenue full and likely backwatered upstream. Possible overflow onto Arroyo Avenue, and other localized areas of flooding from creek water may be occurring. NWS will issue a Flash Flood Warning if not yet already issued.
5.3 Monitor Stage. Arroyo Avenue drain outfalls into Sleepy Hollow Creek backwatered. Street flooding from storm drains possible. NWS will issue a Flash Flood Watch if not yet already issued.
About This Location Collapse

Latitude: 37.991667° N, Longitude: 122.576111° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 7.8 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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NWS Information
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Monterey, CA 93943-5505
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Page last modified: 2-Nov-2020 7:27 PM
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