MaineSkiLady
Angel Diva
I recall that there was a season (I think it was even more than 1....2??) in the 70's in CO with a pretty serious snow drought. Late 70's?? Early 80's?? (anyone who recalls precisely, help me out here) The resorts that had snowmaking - and I believe Keystone was one of the first with an extensive system - were the ones who survived a couple of truly rough seasons. Right after that, the rush was on to install and implement snowmaking, at least in that region. It's mostly "filler" kind of supplementing (super-high traffic areas, etc) -- also to get an early season base going. Then hopefully the skies "open." :DI had no idea so many resorts made snow! I always thought man made snow was something skiers disliked but I can see that if it means an early opener people would like it just fine.
However, in the Midwest and everything east of there, snowmaking is de rigeur -- absolutely mandatory. Happily, the technology (more like an art form now!) has come a long, long way -- to the point where the stuff can be absolutely terrific. Does it top 2' of freshies? Heck, no. Does it beat not skiing at all? Ummmm.....dumb question. And yes, it is a very durable surface. In the east, it's so durable that it really doesn't begin to soften until it's downright warm out. The base at Sugarloaf last season was still mid-winter in early April and didn't soften until mid-April.