Brahmani and Baitarani Rivers

The Brahmani River

The Brahmani is the second-largest river in Odisha, formed by the confluence of the South Koel and Sankh rivers near the industrial town of Rourkela. The South Koel originates in the Chotanagpur plateau of Jharkhand near Lohardaga, while the Sankh rises in the Ranchi plateau. These two rivers flow through some of the most heavily forested tracts of the Chotanagpur region before uniting at Vedvyas near Rourkela in Sundargarh district — a site of considerable religious importance where a temple marks the sacred confluence. After the confluence, the combined stream is known as the Brahmani and flows for approximately 480 kilometres through Odisha before emptying into the Bay of Bengal at Dhamra.

Course and Tributaries

After its formation at Rourkela, the Brahmani flows south and southwest through Sundargarh district, receiving the Tikara River on its right bank. The river then turns southeast into Angul district, where the Tikira and Kharasrota tributaries join it. Below Dhenkanal, the terrain flattens as the Brahmani enters the coastal plain. The Rengali Dam near Talcher in Angul district is the primary water resource project on the Brahmani, completed in 1985 to provide irrigation, power, and flood control. The river’s left bank tributary, the Genguti, drains the coal-rich Talcher region. The Brahmani is joined by the Birupa distributary of the Mahanadi near the delta head, creating an interconnection between the two major river basins. A key feature of the Brahmani is its wide, sandy bed, which in many stretches allows for substantial groundwater recharge.

The Baitarani River

The Baitarani is one of the few major rivers that both originates and completes its entire course within Odisha. It rises from the Gonasika Hills in Keonjhar district, at an elevation of approximately 900 metres, and flows for about 360 kilometres before reaching the Bay of Bengal. In its upper reaches, the Baitarani traverses the mineral-rich Keonjhar highlands, passing through forests and tribal villages. After entering Bhadrak district, the river receives several small tributaries including the Salandi and the Kanjhari. Near Akhuapada, the Baitarani turns east and meanders through the coastal plains, eventually converging with the Brahmani before discharging into the Bay of Bengal through the combined Dhamra estuary.

The Dhamra Estuary

The confluence of the Brahmani and Baitarani creates the Dhamra estuary, a significant ecological zone and maritime feature on the Odisha coast. This estuary is a major tidal inlet that experiences strong daily tidal fluctuations and seasonal flooding. The mangrove forests around the Dhamra estuary form part of the Bhitarkanika ecosystem, serving as nurseries for fish and crustaceans. The estuary also provides an important habitat for the endangered Irrawaddy dolphin and is a nesting ground for olive ridley turtles. The Dhamra port, developed as a deep-water all-weather port, has been operational since 2010 and handles coal, iron ore, and other bulk cargo — though its construction and operation have raised environmental concerns regarding its impact on the sensitive mangrove ecosystem and turtle nesting sites.

Economic Importance

The Brahmani-Baitarani basin supports approximately 22,500 square kilometres of Odisha’s land area. The Rengali multipurpose project on the Brahmani provides irrigation to 2.5 lakh hectares across Angul, Dhenkanal, Jajpur, and Kendrapara districts through a network of canals. The Talcher industrial complex, one of Odisha’s major thermal power and fertiliser hubs, is located along the Brahmani. The river water is extensively used for power plant cooling, coal washing, and other industrial processes. On the Baitarani, the Salandi dam provides irrigation and drinking water to Bhadrak district. The combined basin also supports a vibrant fishery, with thousands of fishing families dependent on the rivers and the Dhamra estuary for their livelihoods. Pollution from industrial effluents, particularly from the Talcher plants and the coal washeries, and increasing salinity intrusion in the lower reaches are growing concerns for the health of these river systems.