Here is the link to the Wyoming snotel site administered by the NRCS: http://www.wcc.nrcs.usda.gov/snotel/Wyoming/wyoming.html
If you click on a site you can retrieve detailed information regarding the current snowpack at that site. Please note that they measure snow depth using a pressure transducer below a pillow filled with antifreeze. As a result they are not 100% accurate as different density of snow, ice crusts, etc can radically change the snow depth, but they give a good representation of the regional snow depth and temps. They can be good for comparing one snow year to another.