This article has been extracted from
THE IMPERIAL GAZETTEER OF INDIA , 1908.
OXFORD, AT THE CLARENDON PRESS.
Note: National, provincial and district boundaries have changed considerably since 1908. Typically, old states, ‘divisions’ and districts have been broken into smaller units, units, and many tahsils upgraded to districts.Many units have since been renamed. Therefore, this article is being posted mainly for its historical value.
A river of Assam, which rises in Bhutan and has a tortuous easterly course through Goalpara District, till it falls into the Manas. Its principal tributaries are the Buri Ai and Kanamukra, both of which join it on the left bank. For the greater part of its course the Ai flows through jungle land ; but it is used for the export of rice, mustard, thatching-grass, and timber, and is one of the routes by which articles of merchandise are conveyed into the interior.
Boats of 4 forts burthen can proceed as far as Kollagaon in the rainy and Chamugaon in the dry season. The river, which is 95 miles in length, is nowhere bridged, but is crossed by ferries in four places.