Formby Flood Defence
January 27, 2021
Is Formby always likely to flood?
The answer to that question is a resounding Yes!
The reason is easily explained because of the geography of Formby. It is open to all three of the causes of flooding. According to the Zurich Insurance Company.
The three definitions of flooding they cite are Fluvial flooding, Pluvial flooding and Coastal flooding.
A fluvial, or river flood, occurs when the water level in a river, lake or stream rises and overflows onto the surrounding banks, shores and neighbouring land. The water level rise could be due to excessive rain or snowmelt.
A fluvial, or river flood, occurs when the water level in a river, lake or stream rises and overflows onto the surrounding banks, shores and neighbouring land. The water level rise could be due to excessive rain or snowmelt.
A pluvial flood occurs when an extreme rainfall event creates a flood independent of an overflowing water body. A common misconception about the flood is that you must be located near a body of water to be at risk.
Yet pluvial flooding can happen in any location, urban or rural; even in areas with no water bodies in the vicinity.
Coastal flooding is the inundation of land areas along the coast by seawater. Common causes of coastal flooding are intense windstorm events occurring at the same time as the high tide (storm surge), and tsunamis.
Storm surge is created when high winds from a windstorm force water onshore — this is the leading cause of coastal flooding and often the greatest threat associated with a windstorm. The effects increase depending on the tide - windstorms that occur during high tide result in devastating storm surge floods. In this type of flood, water overwhelms low-lying land and often causes devastating loss of life and property. (Source: https://www.zurich.com/en/knowledge/topics/flood-and-water-damage/three-common-types-of-flood )
Recently various local Councillors and our MP have commented on the causes and potential solutions. On a personal note, the recent exchanges between one of our Parish Council members and a Sefton Councillor have added little to answer the question of 'What can and should be done'? On the other hand, Bill Esterson MP seems to be unaware that the Environment Agency has already agreed on a policy for river flooding. They first mooted the idea at least 20 years ago. An accidental breach of a dyke on Moss Lane contained the Cheshire Lines Brook, which was flooding onto the local fields.
Thanks to @EnvAgencyNW @AndynBrown16 for this video of River Alt at Lunt Meadows. 30 metres of embankment collapsed on Wednesday, saving Maghull from life threatening flooding. Big questions about whether to repair the breach or not as best way to protect against future flooding. pic.twitter.com/noFY7D89n4
— Bill Esterson (@Bill_Esterson) January 22, 2021
This, in turn, led to the Lunt Meadows project which was designed to be the solution for any flooding of the River Alt. At the time of adopting the policy, a few members of the public in Formby were bitterly opposed, citing the spread of malaria-like diseases because the scheme would be home to extensive mosquito colonies. As a member of the Little Altcar Parish Council, I supported the flood meadow scheme. And I'm pleased I did.
The work of our teams at Bickershaw and Lunt Meadows is essential in helping to mitigate flooding as well as provide homes for wildlife. https://t.co/DFpnfBEFvR
— Lancashire Wildlife Trust (@Lancswildlife) January 25, 2021
Nevertheless, since so much of Formby is below sea level and the effects of the Climate Crisis get even more significant, I'm of the view that we will continue to be threatened by flooding until the causes are addressed by everyone in the world. But, in the meantime, it would help if our local Parish Councillors had a closer look at their Powers in relation to Public Health and flooding. The Council have acted once before around 2011 when they made a decision to clean up the Long Lane Brook and insist that landowners clear the banks of the brook.
At the time it raised a great deal of vitriolic criticism from residents, some of whom felt it despoiled a little bit of their local environment.
I wonder what they think now?