Our normal is about 120" and had it up to 190", fortunately not all at once with thaws in between (except we had no melt January on so it kept coming and coming.)
Our lake effect snow is relatively dry, accumulates fast, but much blows off the roof. Nor'easters bring the heavy wet stuff that sits.
I use a roof snow rake so I can pull snow off from the ground. Do this when the depth is about a foot or so. My RV is kept covered so I'm not worried about scratching anything and the cover helps the snow slide off. Since the RV is not heated because I don't snow camp, I don't have much of a problem with ice build-up.
2015 Shamrock 231KSS, Oyster shell
2016 Chev Silverado LT Z71 Ext. Cab, 4x4, 5.3L V/8
Reese Straight Line WDH, 2000W Honda Gen.
2 Old Town kayaks & 2 Boston Terriers - Zoey/Gonzo
Lar & Ruth
55 nights camping in 2015, 45 in 2016