Context: The areas that are not arid and receive high precipitation experience periodic flooding from rapid snowmelt and runoff. The mean precipitation in the Alps ranges from a low of 2,600 mm (100 in) per year to 3,600 mm (140 in) per year, with the higher levels occurring at high altitudes. At altitudes between 1,000 and 3,000 m (3,281 and 9,843 ft), snowfall begins in November and accumulates through to April or May when the melt begins. Snow lines vary from 2,400 to 3,000 m (7,874 to 9,843 ft), above which the snow is permanent and the temperatures hover around the freezing point even July and August. High-water levels in streams and rivers peak in June and July when the snow is still melting at the higher altitudes.

Question: What areas experience periodic flooding from rapid snowmelt and runoff?
Answer: The areas that are not arid and receive high precipitation

Question: What are the ranges of mean precipitation in the Alps?
Answer: 2,600 mm (100 in) per year to 3,600 mm (140 in) per year

Question: Where do the higher levels of precipitation occur? 
Answer: high altitudes

Question: At what altitude does snowfall begin in November?
Answer: At altitudes between 1,000 and 3,000 m