The Site comprises two interconnected wetlands, Pataura Lake and Barhel Lake, which are surrounded by the hillocks of the Rajamahal Hills and linked by a channel to the Ganga River. The Sanctuary supports a variety of plants, including around 30 aquatic species. The widespread sedge grass Cyperus tagetum is used for grazing livestock during the dry season. In 2016, the Site was designated as an Important Bird and Biodiversity Area due to its role in providing habitat for over 140 birds. Among these, the Site provides habitat for the endangered band-tailed fish eagle (Haliaeetus leucoryphus) and the vulnerable common pochard (Aythya ferina) and lesser adjutant stork (Leptoptilos javanicus). The area also holds historical significance, as the location of a famous battle between the King of Bengal and the British in 1763. Local communities use the banks of the wetlands for agriculture and sustenance fishing.