Sometimes, as many as three cycles of crops are grown on one field in a year with little diminution in productivity. The western portion of the district is well-wooded with dense, shrub jungles in Upazilas of Sherpur and in parts of Sibganj, which has a large portion of cultivable wasteland. This part of the district is slightly higher than the eastern parts and is mostly above flood level. The soil of this part is generally suited to the growth of paddy. Adamdighi is well known for the fine qualities of rice, which is also grown to some extent in the Shibganj Upazila. The tract to the east of the Karatoya is a part of the valley of the Brahmaputra river; it is generally low-lying and intersected by numerous khals (canals, shallow swamps and marshes). It is subject to yearly inundation from the overflow of the Brahmaputra and gets a rich deposit of silt. There is very little jungle and almost the entire area is under cultivation. Rivers There are many rivers in the Bogra District. The Karatoya is the central divider of the water channel in the district. The other rivers may be classified into the eastern and western systems. Some of the major rivers in this district are: The Bangali The Karatoya The Jamuna The Nagar The Tulshiganga The Isamoti The Vodraboti River at Sahajahanpur Climate The district has a humid subtropical climate. The average annual rainfall in this part of the country varies from 1400 mm to 1600 mm. Demographics According to the 2022 Bangladesh census, Bogra District has a population of 3,733,106, of which 1,852,193 are male, 1,880,480 are female and 433 are third genders. Rural population was 2,771,892 (74.25%) while the urban population was 961,214 (25.75%). Bogra District has a literacy rate of 72.44% for the population seven years and above constituting 75.39% for males, 69.56% for females and 58.41% for third genders. The main language of the district is Bengali; a Northern Bengali dialect is commonly used. Administration Administrator of Zila Porishod: Mokbul Hossain Deputy Commissioner (DC): Nur-E Alam Siddique Upazilas Bogra has 12 Subdistricts (Upazilas): Adamdighi Bogra Sadar Sherpur Dhunat Dhupchanchia Gabtali Kahaloo Nandigram Shajahanpur Sariakandi Shibganj Sonatala Education Bogra Zilla School Bogra Cantonment Public School and College Bogra Polytechnic Institute Government Azizul Haque College Government Mustafabia Alia Madrasha Shaheed Ziaur Rahman Medical College Bogra Govt. College Govt. Shah-Sultan College Bogra Govt. Mujibur Rahman