Ping River

The Ping River (, , ), along with the Nan River, is one of the two main tributaries of the Chao Phraya River. It originates at Doi Thuai in the Daen Lao Range, in Chiang Dao district, Chiang Mai Province. After passing Chiang Mai, it flows through the provinces of Lamphun, Tak, and Kamphaeng Phet. At the confluence with the Nan River at Nakhon Sawan (also named "Paknam Pho" in Thai), it forms the Chao Phraya River.
Ping Basin.
The Ping Basin is one of the largest drainage basins of the Chao Phraya Watershed, draining of land.
The greater Ping Basin, i.e. the basin of the entire Ping river system including its tributary the Wang River, drains a total of .
The main dams in the basin are the Bhumibol Dam and the Doi Tao Dam.
National Parks.
The Ping itself originates in Huai Nam Dang National Park and flows through Mae Ping National Park.