A Case Study of the Boscastle Floods

Authors Avatar

The Boscastle Floods

Where?

Boscastle is in North Cornwall, in the South West of England. A small seaside town, it faces out onto the Atlantic Ocean. 

What?

Flash floods hit the town on Monday 16th August 2004 in a 1 in 50 year occurrence. This caused 120mm of rain in 7 hours, twice the monthly average and causing the river to rise 8/9 feet. Understandably the river broke its banks, flooding Boscastle severely.

Causes?

The main cause was quite simply the fact that there was a lot of rain. 120mm of it in fact. Seeing as it had been raining for a few weeks before, saturating the ground, the water had nowhere to go but down the 2 steep valleys surrounding the village into the river. Or rivers – Boscastle is at the confluence of 3 rivers, the Valency and the Jordan. These understandably burst and the water was funnelled into the main road. Although this particular storm wasn’t down the global warming, we are getting more heavy storms in recent years which is very likely to be to do with global warming.

Join now!

Impacts?

Because of the enormous volume of the water and the shape of the hills, the water went very fast towards the sea, as high as 3 metres, and a speed of 40mph, leaving destruction behind. These speeds can move cars, 100 actually through the village, emptying and destroying the car park, washing them into the harbour and sea, or just leaving them dumped in the village. The amazing rush of water coupled with cars acting as out of control cannon balls, caused homes and businesses to be knocked down or washed away. One 16th century building was completely destroyed ...

This is a preview of the whole essay