World Water Day 2009
Various resources from agencies such as UNESCO and the United Nations Economic Commission are available on the webpage of the UN-Water Task Force on Transboundary Waters.
Last year on this day, I published a Library Boy post entitled World Water Day - Water Law Resources that listed a compendium of water law resources, both Canadian and international.
As well, last week, Istanbul hosted the 5th World Water Forum, the largest international gathering of NGOs, government officials and policy experts on water issues. The Business and Human Rights Resource Center has more on the subject of the Forum.