Bahour Lake

Bahour Lake, also known as Bahour Eri, is a large freshwater irrigation lake located in Bahour commune, about 20 km south of Puducherry city in the Union Territory of Puducherry. It is one of the largest lakes in Puducherry and an important bird habitat. The lake supports irrigation for surrounding paddy fields and attracts migratory birds in winter, making it notable for nature and birdwatching.

Visitors can expect a broad, open freshwater lake surrounded by agricultural fields and rural landscape. The lake has earthen bunds and shallow waters with seasonal water levels. There are no formal promenades or boating facilities. The main experience is birdwatching, photography and quiet sightseeing, especially during winter when migratory birds are present. The setting is rural and tranquil with limited visitor infrastructure.

Bahour Lake is an ancient irrigation tank (eri) traditionally associated with the Chola period. The Bahour area is historically significant for 8th-century Sanskrit inscriptions found at the Mulasthanam Temple, indicating its importance as an early centre of learning and agriculture. The lake has long served irrigation for surrounding farmlands.

The lake is central to the agrarian culture of Bahour commune, supporting paddy cultivation and rural livelihoods. It is valued locally for its ecological role and as a seasonal bird habitat, contributing to the natural heritage of Puducherry.