I followed the link you posted , does snowbird really have this much snow in the summer?
You have to zoom to far in on google to make it useful especially on a phone. Where did you get this map?
Snowbird is no Mt. Hood where you can ride year round, there are no glacial features left in the Wasatch anymore.
But Snowbird stays open till July 4th when we have an average or above snowfall year - Obviously last season with only 400" of snowfall for the season they quite weren't able to make it with that record breaking dry season.
But what do you mean, where did I get this map? Like I said, just go to google, hit 'Maps' at the top. Type in or "fly" to pretty much any ski resort and zoom in on it - it will superimpose a trail map with labeled lifts and runs over the actual satellite image.