Sivasagar is a town and headquarter of the Sivasagar district, Assam. Sivasagar is situated about 360 kilometers (224 mi) northeast of Guwahati. It is well known for its Ahom palaces and monuments. Sivasagar is an important centre for tea and oil industries today.[1]

Etymology
It is said that the original name of Sivasagar was – ‘Kalansupar’ after the name of ‘Kalansu Gohain’ who resided in a village that originally existed in the place where currently the Sivasagar tank is located. [2][3] In the year 1733, the Ahom queen Ambika devi dug a tank at the ahom capital Rangpur, covering a area of 257 acre. The place came to be known as Sivpore (Sivpur) being associated with the great Siva temple (Siva Dol) built on the bank of this tank. Then with the passage-of time, the name Sibsagar was formed