A quick look at the snowpack snow water equivalent (SWE) at western U.S. SNOTELs shows the highest values are nearby at the 9200 foot Grand Targhee site. Take a quick gander, and you'll see a yellow dot near the Wyoming–Idaho border at that site.
|Source: Grand Targhee|
Note: To my knowledge, the ski area will not be open. I don't know their policy for access this time of year. You will need to earn your turns, possibly outside the resort boundary.