FIRM Online
FEMA Map Service Center
USGS National Map Viewer
USGS Earth Explorer
USGS FEMA Estimated BFE Viewer
HEC Gridded Data Sources
HEC Working with Gridded Data
IA State Mesonet Hourly MRMS QPE RTMA GRIB
Oregon State University Daily PRISM Climate Data
UCAR EOL Hourly Precipitation NCEP GRIB Stage IV Data
NASA ORNL Daily Precipitation and Temperature Data
NOAA AORC Hourly Precipitation and Temperature Data
USGS National Water Dashboard
USGS Water Resources Homepage
USGS StreamStats
USGS National Water Information System(NWIS)
USGS NWIS Mapper
USGS NSS National Streamflow Statistics