<span>The windward side (as opposed to the leeward side). This is the side facing the prevailing wind, where the air is forced up the mountain where it must cool, condense, and precipitate out its moisture. As it passes the mountain it will sink, whereby it compresses and warms, which is not conducive to precipitation or even clouds.
The Ganges River is a major contributing factor to population density in India. Most Indians live near the river because it is a water source and it is a holy river to Hindus.