Historical data for snow depths from manual snow plots in the Presidential Range of New Hampshire is next to impossible to find. The USFS snow rangers maintain plots at both Hermit Lake and the Harvard Cabin. However, they have not been willing to publish or share this data with the general public. Randolph Mountain Club maintains a manual plot at Grey Knob at the north end of the range as well. These are the primary areas of interest for backcountry skiing. I have been archiving the daily AMC reports as well as the weekly RMC reports for the past few seasons. There are some gaps in data but this is the best information available.
2014-2015 Dark Purple
2015-2016 Light Purple (Worst Year Ever)
Hermit Lake Snow Plot Data
Grey Knob Snow Plot Data