Q. What human factors contribute to flooding? 

A.
Human factors contribute to flooding through

• Land-use activities such as urbanization increase run-off volume and rate,
• Occupation of the flood plain obstructing flows,
• Structural flood control measures such as embankments in the upstream,
• Decrease in conveyance of the river channels owing to build up of river debris, restriction of waterways, dumping of mineral, wastes and rubbish, and
• Mining and other industries altering water regimes.

For more information about:
Effect of land-use, please refer to "The Role of Land-use Planning in Flood management, Chapter 2".
Effect of structural measures, please refer to "Environmental Aspects of Integrated Flood management, Chapter 5 ".
Effect of climate change, please refer to "Flood Management in a Changing Climate".