A false-color render of Citarum river. Note that the unmapped line shown above is not geographically accurate.
Days after my attempts in extending the Citarum River, Indonesia (see this post), a HOT (Humanitarian OpenStreetMap Team) project added an unconnected part of the same river (highlighted in above image in dark blue color). Today, I have mapped the gap between both rivers to be joined into one in Changeset #64012348.
One thing that surprises me in the HOT changeset is that the river that flows in an opposite direction with my drawn rivers. I am confident enough to change the direction of the river to follow the direction of the dam in (-6.69206,107.41797) as well as the tributaries found at the unmapped part of the river (after the HOT changeset).
I am planning to do some QA on the HOT-added river before merging with the main river line.