Introduction - Concepts - Chapter 3 Class 9 Geography - Drainage - Geography

Introduction

• In simple terms, drainage describes the river system of a particular region.
• Small streams flow in different directions and converge to form the main river , draining into a large body of water, such as a lake, sea, or ocean.
• A drainage basin is an area drained by a single river system.
• An elevated area, such as a mountain or upland, separates two drainage basins .
• Such uplands are called water divide.
• Amazon basin is the world’s largest drainage basin.
• The Ganga basin is the largest drainage basin in India.