The avalanche paths are boundaries of historic and active avalanches in the Washington State, primarily in WSDOT’s Northwest and North Central Regions. The avalanche path features also contain an attachment to historic maps and images of the avalanche. If you have questions about the data, please contact John Stimberis at John.Stimberis@wsdot.wa.gov or Harlan Sheppard at Harlan.Sheppard@wsdot.wa.gov.