Consequently, the soils were already saturated so water could not infiltrate into the ground, causing overland flow on the 16th. This link opens in a new window. Boscastle to benefit for years to come from new flood defence scheme and regeneration projects [Online] Available at: Nicholas Pearson Associates, Flood management case study: Extract The flood on 16 August in Boscastle in Cornwall was the worst in local memory and an Environment Agency report concluded that it was among the most extreme ever experienced in Britain. A flash flood is is a rapid flooding of geomorphic low-lying areas – washes, rivers , dry lakes and basins.
The weight of water eroded river banks, damaged gardens and pavements. Animation of Satellite images Flash Player required. Rainfall rates of at least 32 mm per hour are being measured. Boscastle is also located on a confluence of three rivers. This combined with the Valency valley being narrow led to a very high discharge descending into the valley bottom of Boscastle in a short space of time Bull, Flooding On the day of the flood, about 75mm of rain fell in two hours — the same amount that normally falls in the whole of August.
They deal withs some flooded culverts and roads.
Boscast le then and now [image online] Available at: Xase – A convergence of the prevailing South-Westerly winds and the path of the depression cause a vertical uplift of air. Weather, 60 8pp.
Case Study Boscastle Flood Flashcards by | Brainscape
The co-ordinate the emergency response in major floods and helps rescue lives and properties, Firefighters: This link opens in a new window. Human Impacts There was a huge financial cost to the floods.
Rainfall Radar Animation of rainfall radar. Cars, walls and even bridges were washed away.
They issue warnings, forecasts and implement major incident plans. Tewkesbury Flood in July The storm was localised this meant it stayed in one place and surrounding voscastle received a mere 3mm of water because there was a trough situated right on top on Boscastle. The flooding also had several other key impacts on Boscastle and its inhabitants.
Boscastle Floods, – Causes and effects table in A Level and IB Geography
Boscastle is also located on a confluence of three rivers. Floods devastate village On 16 Augusta devastating flood swept through the small Cornish village of Boscastle. Nicholas Pearson Associates, They monitor water levels and flows. This combined with the Valency valley being narrow led to a very high discharge descending into the valley bottom of Boscastle in a short space of time Bull, The benefits include new shops built with insurance money, a new, bigger visitor centre, a reshaped car park away from the river and boscastlee new flood alleviation scheme.
Boscastle Flood- 16th August Meterorological analysis of the conditions leading to flooding on 16 August Map of the area affected What happened to cause this event? The rainfall rate key shows how the colours in the image relate to the fliod the rainfall is falling. The church was filled with six feet of mud and water.
Boscastle Floods 2004 Case Study
Fortunately, nobody died — thanks largely to a huge rescue operation involving helicopters — but there was millions of pounds worth of damage. Flooding On the day of the flood, about 75mm of rain fell in two hours — the same amount that normally falls in the whole of August.
For example, the red areas indicate that rain is falling at between eight and 16 mm per hour. The wind is blowing anticlockwise about the low pressure area, so the air is arriving into Boscastle from a south-westerly direction.
Image by Komilla Chadha. Removing low bridges and replacing them with wider bridges – this meant large amounts of water could flow freely goscastle the bridge and the bridge wouldn’t act like a dam in the flood, vegetation and debris became blocked, creating the effect of a dam.
Don’t show this message again. Questionnaire on UK Floods.
Radar imagery Fig 2. These factors led to a flash flood which caused over one thousand homes, cars and businesses to be swept away z damaged.
Anonymous 31 Llevel at With a 1 in probability of occurring, Boscastle’s flash flood is considered an extreme weather event. Land use – The upper part of the village has been developing urbanisation!