I'm looking for a historical ice thickness dataset in southern Alberta (or its vicinity) to confirm test criteria for an electrical substation's equipment. For now, I am using the "Radial Wet Snow Accretion" 50-years return value from AESO's map (see link below), but it's way conservative, and manufacturers either can't meet it or are reluctant to test for it (and this test is not budgeted).
I have found these datasets from Environment Canada but the one which might be applicable (1947 to 2002) is outdated, the stations don't all have names, and it's hard to correlate them with physical locations. I followed the steps suggested in this comment but even with a response, 2002 seems quite outdated.
There's also this weather map published by the AESO, but it's the result of a statistical calculation for transmission lines, not actual historical data. Plus, as mentioned above, it seems way conservative.
I'll keep looking and will report back if I find something interesting, but any help would be really appreciated.