This document discusses the world's water resources, beginning with an overview of the percentages of water found in oceans, freshwater, ice and glaciers, groundwater, lakes, and the atmosphere. It then provides more details on major river basins around the world, including tables listing the 10 longest rivers and rivers with the largest discharge and drainage areas. Specific sections focus on African rivers and river basins like the Congo, Niger, Zambezi, Orange, and Limpopo. The role of glaciers and ice caps is also summarized, with details on their location and volume.