精选优质文档-倾情为你奉上水利水电工程专业英语河流工程篇1. Some Problems Related to Alluvial Rivers（1）1. 与冲积河流相关的一些问题（1）Many of the earlier civilizations came into being the fertile valleys of large rivers. Civilizations prospered in the Nile valley in Egypt, along the Tigris and Eupharates rivers in Mesopotamia, along the Indus River. As early as 4000 B.C. people built dams across the rivers to store water, dug canals for navigation purposes and also to carry water to the fields to produce much-needed food
