Of course, ski resorts may spin how they present their snow totals, but I can say from personal experience that their reported figures seem pretty accurate. For example, during the last few years, they were quite frank about the lack of snow.
Here's a list of the "year to date" total snowfall as of Jan 16, 2016 for various ski areas. The total snowfall can vary significantly at different points in a given resort, so I'm just reporting the highest figure. You can assume that some locations at a given resort will have had less snow.
Sugar Bowl 281 inches
Boreal 243 inches
Squaw Valley 237 inches
Alpine Meadows 231 inches
Northstar 246 inches
Mt. Rose 210 inches
Diamond Peak 163 inches
Sierra At Tahoe 241 inches
Kirkwood 243 inches
(You will notice I've left out Homewood, Donner Ski Ranch, Tahoe Donner. This is only because I couldn't find year-to-date totals for those areas)
Bottom line? We had a lot of snow so far - 20 feet in several places! - significantly above average for this time of the season. Thank El Nino or good luck or those pagan snow dances some people have been performing.
And more storms are on the way. As I write this a few hours before it posts, it is snowing again, and the National Weather Service shows a significant chance of snow for the next few days. Not bad, eh?
Come on up the mountains to play in the snow!