Sleepy Hollow Creek at RVFD Fire Station 20
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Upstream gauge unavailableDownstream gauge unavailableWarning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.No secondary data available. Transformations for Flow data and a secondary Y axis cannot be made at this time.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 04/01/2025 12:55 PM PDTCATEGORY STAGE 
Major Flooding 9.8 ft Moderate Flooding 8.8 ft Minor Flooding 7.8 ft Action 5.3 ft Reliability of the Forecast:
NOTE: Graphical forecasts are not available during times of high water, forecast crest information can be found in the local WFO web page.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 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.
Gauge Location
Gauge Photos
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Probability Information
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Collaborative Agencies
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.