Precipitation and Meteorological Data

       NCDC National Climate Data Center

        NCDC OASIS Data Acquisition System

        CDEC Real Time and Historic Precip Data

        NOAA San Francisco Bay Region

        Oregon Climate Service

        California Cooperative Snow Survey

        Western Regional Climate Center

        NRCS National Water and Climate Center

      USGS Surface Water Data Retrieval

        California Real Time Streamflow Data

        Nationwide Real Time Streamflow Data

        NOAA Tide Station Data

        California Data Exchange center

        USGS National Water Conditions

        USGS Oregon Home Page

        USGS Washington State Homepage

        USGS California Water Resources

        USGS Water Resources of the United States

        USBR Central Valley Project Operations

        EPA STORET Database

       USGS 7.5 min DEM FTP Site

        Another USGS 7.5 Min DEM Site Covers All States

        BARD, Bay Area GIS Resources

        ESRI Home Page

        National Wetlands Inventory

        Microsoft Terraserver Aerial Photography of the World

        San Francisco Bay-Delta GIS

        Central California DEM and Bathymetry Data

        California DEM Data and Free DEM Models