3. River Basins

• What is a Drainage Basin?

  An area drained by a river and its tributaries
• What human factors can affect flow within a drainage basin?

  impermeable surfaces, dams and reservoirs, deforestation, changing land use
• What physical factors affect flow within a drainage basin?

  vegetation and interception, rock type, antecedent conditions, relief and topography, permafrost, precipitation