Storm and flood management resources on the internet: Radar, satellite, river stages, rainfall maps, atmospheric rivers and more …
Weather and storm information
Check out the radar from the National Weather Service.
Check out the Western satellite from NOAA here.
Get current atmospheric river conditions and forecasts and more from the Atmospheric River Portal from Scripps and the Center for Western Water and Weather Extremes. (More atmospheric river information by clicking here.)
You can see a rainfall map for the last hour, six hours, 24 hours, or more at this website. Look at it statewide or by region.
Get a list of all the watches, warnings and advisories for California at this National Weather Service website.
River and stream conditions
This website from the National Weather Service has a wealth of information. Mouse over a particular gage to get a graph of the flow for the last four days plus the forecasted flows for the next five days. Precipitation data as well.
Continuously updated US flooding information from the National Weather Service shows observed flooding locations and statistics, flood warning areas, as well as current precipitation. See the real-time effects of the flooding via social media posts.
At this CDEC website, you can display river stage maps for current hour and the past two hours for the North Coast, Upper Sacramento, Lower Sacramento, Russian, Central Coast, San Joaquin, or Truckee rivers.
The Sacramento County's ALERT system consists of 2 base stations, and 50 gauging stations. The purpose of the County's ALERT website is to provide access to stage and rainfall information during storm events. Find streamflow, forecasts, and more here.
Check out webcams of the Eel, Truckee, and Merced rivers, plus San Pedro Creek at Goleta and Arroyo Seco near Pasadena.
At this Department of Water Resources (DWR) website, you can display the latest floodplains in a web viewer. The data has been expanded to cover the floodplains to cover all counties in the State and to include 500-year floodplains. The 100-, 200-, and 500-year floodplains can be selected for display using this viewer. The web viewer allows users to view a particular area, identify their potential flood hazards, and print a floodplain map.
Plenty of information here on types of flooding, determining and reducing your flood risk and more.
Here's the federal government's website for flood preparedness.
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