The tank is located near the Sivasagar Sivadol, a major landmark of the town.

The tank is built on an area of 120 acres (48.6 hectares) and is 64 feet (19.5 metres) deep.

[1][2] This large tank was built by Queen Ambika, consort of Shiva Singha, in the year 1734.

The water level of the tank never changes which highlights the advanced hydrology of the Ahom period.

[3] Sivasagar Tank is an important habitat for migratory birds during winter season and it is also a home of many flowering plants.