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  1. Home
  2. Geoinfo
  3. Water Information System
  4. River Hazards
  5. Ice Jams

Ice Jams

Montana has the highest incidence of ice jams in the lower 48.

  • Interactive Map of Montana Current and Historic Ice Jams from the USACE CRREL Ice Jam Database
  • Summary Reports for Montana, such as ice jams by water year, month, and river
  • ​Table of Montana Ice Jams (1894-2015) extracted from the USACE CRREL Ice Jam Database (download in .csv format)​
    • For addtional queries please click here for the USACE CRREL Ice Jam Text Query
  • What are Ice Jams?
    • Description from the Great Falls National Weather Service
    • Ice Jam Story Map from Carbon County, MT
    • Description from the U.S Army Corps of Engineers Cold Regions Research and Engineering Labratory (USACE CRREL)
  • Montana News Articles about Ice Jams
    • Billings Gazette 2014: "Ice jams continue to wreak havoc on Yellowstone, Little Bighorn rivers"
    • Havre Daily News 2014: "People warned to be aware of dangers of ice jams"
    • Spokesman-Review 2003: "Montana River Ice Jams Cause Minor Flooding"

 

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