Located on the western shore of Sumatra , the Woyla River was strongly affected by the 2004 Indian Ocean earthquake and tsunami . Its smaller , northern outlet , a closed outlet before the tsunami , was re-opened in April 2005 to be closed again in June 2006 . The larger , southern outlet , which existed before the tsunami and has been widened by it , is migrating north since its northern bank is being eroded while sediments are being deposited along its southern bank
2004 Indian Ocean earthquake and tsunami
2004 Indian Ocean earthquake and tsunami
Woyla River