[Assam] Colonial column?

[Dilip/Dil Deka]

Does someone in the net  know who built the colonial column? I always thought it was an Ahom king. But looking at it today it does not appear to be so. Was it a british monument?
  Dilip Deka
   
  From the Assam Tribune:
   
A couple enjoying a romantic evening under the shadow of the old colonial column on the Urvasi island in the Brahmaputra river front in Guwahati on Wednesday. – UB Photos