Maps reflect general situation on 5 January 2005. Sources: United Nations, Governments of India, Indonesia, Thailand and Sri Lanka.
More than 100,000 people are believed dead in Aceh and Northern Sumatra, while some 500,000 people are sheltering in scattered refugee camps across the province, the UN estimates.
Large swathes of Banda Aceh, Meulaboh and Calang and their outlying districts are completely destroyed.
To speed up aid delivery, the Australian Air Force has assisted in improving air traffic control at Banda Aceh airport. The UN is moving supplies by truck along the road from the regional capital Medan.
Other agencies are shipping relief by sea to outlying islands. The ports of Belawan and Lhokseumawe are the nearest harbours undamaged by the tsunami.