An important source of watersheds, Doi Inthanon spawned several waterfalls. Mae Ya waterfall, the biggest waterfall that cascades from an awesome height of two hundred and eighty meters. Falling like layers of curtain, the water that gathers below becomes another waterfall known as Mae Klang Waterfall, the best known waterfall in Chiang Mai.
Siribhume Waterfall was formerly"lao-Lee," named after the nearby Lao-Lee Hmong village. This is another breathing waterfall with waters gushing over a steep cliff.

Doi Inthanon is a fertile forest of shorea woods, deciduous trees and montane forest covered with moss and orchids, pine trees and prairie.The treetops may not be so high, but the trees are quite dense.This dense forest, and its ability to absorb moisture from clouds as well as the mist that forever blankets this area, has won its titles of misty forest and rain forest. No doubt, this montane forest is a green landscape all year round with watersheds feeding the valley below.

Moreover, 382 different species of birds out of a total of 942 species found in Thailand have made their happy homes at Doi Inthanon. Making Doi Inthanon a natural bird-watchers paradise. The nectarinildae, a little bird found only in Thailand, and the Grey-necked wrens are found in Doi Inthanon-the only place where this bird can be seen in Thailand.