Mae Puem National Park There isn't much territory. But the mixed deciduous and deciduous forests that cover most of the national park are outstanding features that create beautiful colors during the dry season when the forest changes color. The national park has 2 areas: Doi Pui Forest and Mae Pui Forest. Doi Pui Forest is in Phan District and Mueang District. Chiang Rai Province Mae Puem Forest is in the area of ​​Phan District and Pa Daed District. Chiang Rai Province and Mae Chai District, Phayao Province, an area of ​​approximately 222,500 rai or 356 square kilometers. (The area is in Chiang Rai Province, approximately 137,431 rai or 220 square kilometers.. and is in Phayao Province, approximately 85,069 rai or 136 square kilometers) Within the park, there is a large reservoir, Mae Puem Reservoir..