The Kolkata Tributary, also known as the Hooghly River, is a major waterway in Kolkata, India. It is a distributary of the Ganges River, and is approximately 260 km long. The river starts from the confluence of the Ganges and the Jalangi River near the city of Murshidabad and flows through the cities of Kolkata and Howrah before merging with the Bay of Bengal.

The Kolkata Tributary plays a crucial role in the economy and culture of Kolkata, as it is a major trade route for the city. It is also a popular tourist attraction, with many ghats (riverfront steps) and important landmarks, such as the iconic Howrah Bridge, lining its banks. The river is an important source of water for irrigation and is also used for transportation and fishing.

The Kolkata Tributary has witnessed the rise and fall of many empires, and its banks are dotted with historical monuments and temples. It is a symbol of the rich heritage and vibrant culture of Kolkata, and is a must-visit for anyone exploring the city.