Useful River Ice Links
NCRFC River Ice Statement
Updated every Tuesday during the Winter Season

Water Temperatures
Map of accumulated freezing degree days (AFDD)Generated by the National Operational Hydrologic Remote Sensing Center (NOHRSC)
Ice Jam Information Clearinghouse
This site is maintained by the USACE Cold Regions Research and Engineering Laboratory and it includes the CRREL Ice Jam Database, current and historic ice jam mapping tools, and ice jam reference materials.
USACE St Paul Dist River Ice Website
Includes regional AFDD plots, an Ice Engineering Archive, and an ice load guide.

Navigation Conditions: Illinois and Mississippi Rivers
Includes ice reports, water temperatures, and photos.
University of Alberta River Ice Engineering
NASA River Ice Images is the U.S. government's official web portal to all federal, state and local government web resources and services.