Is there any specific code to follow for snow load?

Hi,

I am curious about snow load applied on pipes? I understand from the help desk how snow load is calculated from given density of snow and its height (if I choose density medium).

My question is: Is there any specific codes or books or reference I can use to determine maximum snow height and its density for a specific location? My focus is western Canada (British Columbia, Alberta) and South-Eastern USA (South Carolina, Florida, Alabama etc.).

Thank you.

Rasel