NORTH-east to the Rushikulya in the south-west. This fertile region is known as the 'rice bowl' of Orissa. The coastal plain is a gift of six major rivers. The formation of the coastal plains depends on the rivers and their catchment area. The rivers are: From north to the south, the Subarnarekha, the Burhabalanga, the Baitarani, the Brahmani, the Mahanadi, and the Rushikulya. According to the location, the coastal plain can be divided into three sub-regions:a) The north coastal plains - the deltas of the Subarnarekha and the Burhabalanga up to the river Baitaranib) The middle coastal plains - the combined deltas of the Baitarani, the Brahmani, and Mahanadic) The southern coastal plains - the Rukshikulya plains can be divided into three zones parallel to the shoreline.Hence, the correct answer is the Subarnarekha and the Baitarani.Subarnarekha: The Subarnarekha originates from the RANCHI Plateau in Jharkhand FORMING the boundary between West BENGAL and Odisha in its lower course. Brahmani: The basin is bounded in the North by Chhotanagpur plateau, in the West and South by the Mahanadi basin, and in the East by the Bay of Bengal. The basin flows through Jharkhand, Chhattisgarh, and the Orissa States and drains into the Bay of Bengal.Baitarani: A major portion of the river basin lies within the state of Odisha, while a small PATCH of the upper reach lies in Jharkhand state. The upper Baitarani basin on the western slopes of the Eastern Ghats, comprising the Panposh-Keonjhar-Pallahara plateau, is one of the two plateaus forming "The Central Plateaus"—one of Odisha's five major morphological regions.Mahanadi: The river Mahanadi originates at an elevation of about 422 mts. above mean sea level near Pharsiya village near Nagri town in Raipur district of Chhattisgarh. It is one of the major inter-state east-flowing rivers.Rashikulya: the Rushikulya River is one of the major rivers in the state of Odisha and covers the entire catchment area in the districts of Kandhamal and Ganjam of Odisha.Vanshadhara: The river originates in the border of Thuamul Rampur in the Kalahandi district and Kalyansinghpur in the Rayagada district of Odisha and runs for a distance of about 254 kilometers, where it joins the Bay of Bengal at Kalingapatnam, Andhra Pradesh.