The Riverton Forecast Office has compiled a summary of the Water Year(Oct 1 2016-Sept 30 2017) precipitation for locations in Western Wyoming. For comparison Star Valley Ranch measured 38.05 inches with 252 inches of snow. This is comparable to the amount observed at Old Faithful in YNP where the 38.57 inches was the greatest ever recorded going back to 1905!  Another reliable observer in Star Valley Ranch actually measured around 40 inches for the Water Year.

Old Faithful measured 262 inches of snow vs the 252 at Star Valley Ranch.

For more details of this record water year including graphs go to the link
http://www.weather.gov/riw/drought_4