The depth of snow accumulated on the ground.(noun)
The altitude, in a mountainous region, above which the ground is covered with snow.(noun)
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Use "snow level" in a sentence
"Love once started a carpool conversation about the snow level in the San Gabriels, inquiring of Armstrong “if he ever put his [airplane] wingtip so he could fly along the snow level [and if the snow] would all be the same altitude or did it just look like that from the road.”"