• more rain in the winter. This results in the ground becoming saturated.
• heavier rain in the winter. This does not soak into the ground so easily.
• more drought in the summer. This, with higher temperatures, will bake the soil.

Underhill Park pitch, Swansea - after heavy rain
© Photolibrary Wales

• increased rainfall ‘run off’ as ‘overland flow’
  • rain water falling on valley sides reaching rivers more quickly by flowing over the surface
  • the level of rivers rising quickly
  • a higher chance that rivers will overflow banks and flood.