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Issan Territory , The Khorat Plain, also video of the area

Issan Territory Page 1, The Northeast region of Thailand

Issan covers 160,000 km² (62,000 square miles) making it slightly larger than England and Wales together. The territory consists of two main plains: the southern Khorat plain is drained by the Mun and Chi rivers, while the northern Sakon Nakhon plain is drained by the Loei and Songkhram rivers. The two plains are separated by the Phu Phan mountains. The soil is mostly sandy, with substantial salt deposits.

The Mekong forms a large part of the border between Thailand and Laos to the north and east of Isan, while the south of the region borders on Cambodia. The Mekong's main Thai tributary is the Mun River, which rises in the Khao Yai National Park near Khorat and runs east, joining the Mekong in Ubon Ratchathani Province. The other main river in Isan is the Chi River, which flows through central Isan before turning south to meet the Mun in Sisaket Province. The smaller Loei and Songkhram rivers are also tributaries of the Mekong, the former flowing north through Loei province and the latter flowing east through Udon Thani, Sakon Nakhon, Nakhon Phanom and Nong Khai Provinces.

The average temperature range is from 30.2 °C to 19.6 °C. The highest temperature recorded was 43.9 °C in Udon Thani, the lowest -1.4 °C at Sakhon Nakhon Agro Station.

Rainfall is unpredictable, but is concentrated in the rainy season from May to October. Average annual precipitation varies from 2000 mm in some areas to 1270 mm in the southwestern provinces of Nakhon Ratchasima, Buriram, Maha Sarakham, Khon Kaen and Chaiyaphum. The rainy season begins with occasional short but heavy showers, eventually raining very heavily for longer periods almost every day, usually in the late afternoon or at night until it ends abruptly at the on set of the cool season.

The other seasons are the cool season from October to February, when the people sit outside around fires in the evenings, and the hot season from February to May with its sudden peak of high temperatures in April.

Issan Territory Page 2, The Khorat Plain,
Issan Territory Page 3, Video's of Issan music, and the market