Lalmonirhat district with an area of 1240.93 sq km is surrounded by Rangpur district on the south, Kurigram district on the east and Nilphamari and Rangpur districts on the west. The district has 6 rivers — Tista, Dharla, Saniajan, Sarnamati, Ratnai and Sati. The biggest irrigation project of the country, Tista Barrage Project (length 615 m) is located at Doani of Hatibandha upazila. Subadar Monsur Khan Mosque (known as Nidaria Mosque), Sindhumati dighi, Hussain Sarabor (dry pond), Harano Mosque are some of the places with historical interest.Lalmonirhat district was constituted on the 1st day of February, 1984. The district police began functioning on that very day under the supervision of Police Super AHM Nuruddin Khan. The district has Lalmonirhat, Patgram, Hatibandha,Aditmari and Kaligonj police stations.