Topography
The area, in general, consists of complicated mountains. The main mountains in the east part, almost sedimentary rock, are Doi Thumglab, Doi Huatoe, Doi Khunhuay Sai, Doi Phadang, Doi Thum Ngob and Doi Danfak. The main mountains in the west part, covered by forest, are Doi Khampra, Doi Pukphukka, Doi Lekjee, Doi Sankiew-khompra, Doi Kiew Who Lom, Doi Tuay and Doi Yang klor. In the middle of the high mountain ranges, north and south between Huay Mae Jok and Hnong Kheaw Village, is the low-land which has low mountains, for examples, Doi Thummyung and Doi Khunpao. And in the west part, the highest area about 400-1,800 meters above sea level, has Doi Pukphukka, about 1,794 meters above sea level, be the highest mountain. There is heavy rain because the area is influenced by southwestern monsoon.

Climate
The temperature is quite hot in summer and cold in winter with the lowest temperature about 7.5 degrees Celsius, and the highest temperature about 26.7 degrees Celsius. There is heavy rain in rainy season approximately 1,838.5 mm. of rain all the year round with the heaviest rain in August. The area has not been suffered by the weather except some time in winter which has heavily windy rain come with hail in which can destroy the local orchard and cause wild water blowing down heavily. The wild water is too much so that can damage the communication in the area and the nearby area.

Flora and Fauna
The area consists of complicated mountain range and productive forest which is the source of water. In the semi-evergreen forest, montane forest and pine forest has the valuable plants such as wild champak, Yang, Malabar ironwood, baleric myrobalan, cinnamon tree, pine, Heang (a kind of Dipterocarpus obtusifolius) and eng. And in the mixed forest and deciduous forest has the valuable plants such as Burmese ebony, ironwood, Tabak (a kind of Lagerstroemia), Yorpar (a kind of Rubiaceae), Sela (a kind of Lagerstroemia), Chittagong wood, ingyin, Siamese sal, myobalan wood, Tiew (a kind of Catoxylum), many kinds of bamboo and grass, etc.
The area is in the same forest of Chiang Dao Animal Reservation, Chiang Dao District, so that make it be the habitat of valuable animals such as goral, wild boar, barking deer, banteng, guar, porcupine, langur, palm civet, squirrel, chipmunk, many kinds of bird and reptile. And the amphibians found near river are many kinds of frog, toad.