The Jech Doab, can be classified as one of the main region of Punjab

Punjab region

The Punjab , also spelled Panjab |water]]s"), is a geographical region straddling the border between Pakistan and India which includes Punjab province in Pakistan and the states of the Punjab, Haryana, Himachal Pradesh, Chandigarh and some northern parts of the National Capital Territory of Delhi...

. Punjab historically has been divided into regions based on its various rivers, since the name Punjab is based on its 5 main rivers. The Jech doaba include the area between the Jhelum River

Jhelum River

Jehlum River or Jhelum River , ) is a river that flows in India and Pakistan. It is the largest and most western of the five rivers of Punjab, and passes through Jhelum District...

 and Chenab rivers, it is the southern fringes of the Kashmir valley. The main City located in Jech Doaba are Gujrat District

Gujrat District

Gujrat is a district of Punjab Province in Pakistan. It is an ancient district located in between two famous rivers, the Jhelum and Chenab. Because of its proximity with the rivers the land is good for cultivation with rice and sugar cane as main crops...

, Sargodha

Sargodha

Sargodha is a city in the Sargodha District of Punjab province, Pakistan.Sargodha is located in the northwest of Pakistan. It is the eleventh largest city of Pakistan and also known as Pakistan's best citrus-producing area. It is an agricultural trade centre with various industries...

, Mandi Bahauddin

Mandi Bahauddin District

Mandi Bahauddin is a district of the Punjab province of Pakistan. It is located at 32°34'60N 73°30'0E and is bounded on the northwest by the Jhelum River, on the South-East by the Chenab River which separates it from Gujranwala District and Gujrat District and on the southwest by Sargodha District...

, Malkawal, Shahpur, Phalia, Sarai Alamgir and Kharian. The Shahpuri

Shahpuri

The Shahpuri is a dialect of Punjabi language, named due to the town of Shahpur, currently in Sargodha district. This dialect has been spoken by the people of District Sargodha including Dera Chanpeer Shah, Khushab, Jhang, Mianwali, Attock, parts of Faisalabad , parts of Dera Ismail Khan, Dera...

 is the main dialect

Dialect

The term dialect is used in two distinct ways, even by linguists. One usage refers to a variety of a language that is a characteristic of a particular group of the language's speakers. The term is applied most often to regional speech patterns, but a dialect may also be defined by other factors,...

 of Punjabi

Punjabi language

Punjabi is an Indo-Aryan language spoken by inhabitants of the historical Punjab region . For Sikhs, the Punjabi language stands as the official language in which all ceremonies take place. In Pakistan, Punjabi is the most widely spoken language...

in Jech Doaba.