November

Avalanche Risk Mapping

Organization
EBA Engineering Consultants Ltd.

Author
Karen Warrendorf

ESRI Software
ArcGIS 9.0, ArcGIS 3D Analyst

Data Sources
BC 1:20,000 TRIM, 1:70,000 ortho-rectified airphoto (1986-1994), Canadian Digital Elevation Data, Level 1 (CDED1), other sources

Description
This map shows avalanche paths that affect a transportation corridor in B.C.  The avalanche paths were identified by Ava Terra Services Inc. using air and orthophotos in addition to site visits.  Both avalanche paths that have affected the transportation corridor in the past as well as paths that could reach the transportation corridor in the future were delineated on the map.

A map book and strip maps of the entire area were developed to be used by maintenance personnel during winter operations to assist in identifying potentially hazardous areas, and by planning personnel to identify locations for future avalanche control measures and structures.

Acknowledgements
Avalanche information was provided by Jim Bay, Ava Terra, Dave McClung, Doug Kelly, and Geoff Anderson. GIS help by York Law. Historical information provided by Parks Canada staff (Dave Skjonsberg and John Kelly) and the B.C. Ministry of Transportation and Highways (Robert Hemming). Historical avalanche occurrence information was kindly provided by Tony Rota, Kevin Thompson, Roy Gibson, John Poppewell, Louis Rota, Brian Jackson, Mario and Frank Mastroianni, John Provenzano, and Bruno Santucci.