THE Kacchapanadi, better known as the Kaladan river, is the most useful and long-est river in Rakhine State. It rises in the over 8000-foot high Lushai mountain in the northern Chin State. It first courses down along the border between Myanmar and India and then  joins the Boinu river rushing down from the south, some miles south of Falam. And, having wound its way through the northern Rakhine State for over 220 miles, it, immediately south of Sittwe, empties into the Bay of Bengal. Its estuary near Sittwe is six miles wide. It can be navigable for 150 miles from the mouth.