Arrows show river flowing in the wrong direction....

How do I change the direction of the river flow arrows? I clicked on the river and it was highlighted but that is all I could figure out.

Hi, Please make sure you are correct as to the edit you wish to make before proceeding. In the iD online editor, highlight the river, right-click, from dropdown select/click reverse (the twin left-facing arrows). Upload the edit.

Be careful of the extent to which it flows in that direction. You should check the junctures to see if it changes, and split the line at that point.