During the battle between Kylo Ren and Rey in Star Wars: The Force Awakens, Rey directs Kylo Ren's lightsaber into the snow and dirt while they are grappling. Here is the moment in the scene:
It looks like a tactical move by Rey, and Kylo Ren seems very concerned. Does snow and/or dirt deplete a lightsaber? That would be surprising since they have been slicing through thick tree trunks.