The document discusses the causes and effects of flooding in the village of Boscastle in Cornwall, England. Some of the key causes included heavy rainfall of 180mm in three hours, saturated ground from previous stormy weather, and the village's location within the Valency valley which acted as a funnel for flood waters. The flash flooding gave little time for people to prepare or evacuate, and flood waters inundated the main car park located next to the river. Examples of effects included huge volumes of water flowing through the town and increased surface runoff from impermeable surfaces like roads.