Dawei (Tavoy) town is located by the river at a distance about 40 km from its mouth.
Between 1834 and 1848, Justus labors were confined to Moulmein district with occasional visits to Rangoon (now known as Yangon)and Tavoy (now known as Dawei).
At that time, due to political and religious persecution in Burma, predominantly Pwo-Karen from the hinterlands of Moulmein and Tavoy migrated into the area northeast of the Three Pagodas Pass, where they received formal settlement rights from the Siamese Governor of Kanchanaburi.