flood watch

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UndercoverElephant
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Post by UndercoverElephant »

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adam2
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Post by adam2 »

UndercoverElephant wrote:Looks pretty scary

https://www.bbc.co.uk/news/uk-england-d ... e-49189955
Yes, I would not wish to live to live downstream of that, or indeed any other dam.
The damage may LOOK superficial, but even minor damage of that type can lead to total failure.

The inflow to any dam can exceed the storage capacity, a safe form of overflow is therefore required.
A significant risk is that the overflowing water may erode the dam structure, this appears to have started.
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Post by adam2 »

Flooding in and around Sheffield looks much worse than previously.
"Dozens spend the night in a shopping center"

https://www.bbc.co.uk/news/uk-50341846
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Post by adam2 »

Flooding ongoing.
The damage is extensive, including in areas without previous history of flooding.

Flooding in areas known for flooding is nothing remarkable.
Flooding in areas that have not previously flooded is more noteworthy.

https://www.bbc.co.uk/news/uk-england-50372839
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Post by kenneal - lagger »

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Post by adam2 »

Yes.
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Post by fuzzy »

That's a bit of a jump. The last floods in Doncaster were caused by an earth dam above Rotherham dating back to heavy industry days which had been neglected. The agency were forced to drain it quick and the media refused to make the connection about the flooding of Bentley and Toll Bar because they don't do news anymore and it was only Northerners.
Has anyone reported if this dam exists now, or was it easier to scrap, and the media don't do detail, just agendas?

Edit: Yes it exists:

In the 1980s it was decided that it was no longer needed for water supplies and was sold to Rotherham council for £1. The council turned the venue into the centrepiece of Ulley Country Park, with the water hosting sailing and fishing.

Perhaps it doesn't behave the way it used to when managed for water
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Post by kenneal - lagger »

The current floods were caused by a month's worth of rain falling in 24 hours according to the news so that could be classed as an extreme weather event which are forecast to increase in frequency because or global warming/heating.

I thought last years dam problem was caused by extreme flow over topping the dam and washing away part of the concrete spillway.
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Post by RenewableCandy »

Meanwhile in the Lake District they're felling a load of trees to build... flood defences!

I've just signed this
The EA plans to manage flood events in the River Kent in Kendal are potentially disastrous for local residents, businesses, wildlife and the appearance of our beautiful town, as well as creating a huge carbon footprint but they will not deliver the guarantees of improved resilience that were claimed.
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Post by adam2 »

Flooding from storm Dennis looks to be much worse than usual.
Most of the areas afflicted are known to be vulnerable to floods, but the scale of the present flooding is said to be unprecedented.
Very considerable property damage and many persons evacuated.

https://www.bbc.co.uk/news/uk-51519635
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Post by adam2 »

Flooding in Shropshire and surrounding areas is reported to be ongoing and worsening.
Another "worst ever" flood.
Water pouring over the top of flood defences in one location, with further overtoppings feared.

https://www.bbc.co.uk/news/uk-england-s ... e-51626098
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Post by fuzzy »

Trains North through Shrewsbury to Telford were cancelled yesterday/today. Many days recently trains have been only travelling 2 stops to Hereford and then returning, instead of the 100+ miles onto to South Wales - so only a million or so people affected!

I actually drove my wife to Much Wenlock this morning. Roads are either flooding with springs from the hills + blocked drains, or breaking up into dirt tracks as the tarmac deliminates into sinkholes.
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Re: flood watch

Post by adam2 »

The flooding underway in Manchester and surrounding districts looks worth than usual, a couple of thousand evacuated so far.
https://www.bbc.co.uk/news/uk-55743246
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Re: flood watch

Post by adam2 »

This also looks worse than usual, thousands to be evacuated.
https://www.bbc.co.uk/news/world-australia-56476998
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Re: flood watch

Post by BritDownUnder »

adam2 wrote: Mon Mar 22, 2021 12:28 am This also looks worse than usual, thousands to be evacuated.
https://www.bbc.co.uk/news/world-australia-56476998
No floods here as yet but the Hunter river has risen a lot. I think the rain was in the wrong sequence to affect my town. I would have needed to have fallen inland first then closer to the coast to cause a good flood surge. Coupled with two storage reservoirs being only half full I think the worst is now over for our area. I pity the people who choose to live too close to rivers and then block application to build reservoirs higher up those same rivers but what can you do.

It was even mentioned on the news today that there will be some sun. Something that has not been seen here for a while.

Interestingly the Hunter River basin is twice the size of the Thames River basin in the UK, something I was not really aware of until recently the extent of the river and its tributaries.
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