Thanks for that very detailed and interesting story of your
neighborhood geology/geography. The chalk substrate I gather is related
to the "white cliffs of Dover" ? And I am off to look at topgraphic
maps of England :-)
ann
On 8/11/2022 4:24 PM, mike wilson wrote:
I live close to a fairly hilly, relatively unpopulated part of England. In the
1960s it was mooted that a large reservoir be built there to service the steel
and chemical industries about 60 miles south on Teesside. This entailed
constructing the biggest (at that time) reservoir in Yurp and tunnels from its
catchment to the river south of that, then another to the river south of
_that_, the Tees. The plan being for water from the reservoir to go to the
first river, then be abstracted and tunneled to the second river before being
finally abstracted for use in the industrial complexes.
Except the industrial complexes closed/reduced in size/moved elsewhere for
better tax benefits, etc. So the water was not needed. Now the reservoir is a
major leisure and wildlife resource that just happens to provide drinking water
to most of the north east of England.
In south eastern England there is a chalk substrate, so groundwater literally
disappears into the ground when there is a shortage of rain. It is also the
most highly populated part of the British Isles. When there are complaints of a
drought, it is mainly this part that is suffering.
Loads of other interesting stuff went on during the local dam's construction
and first few years of use. The most fascinating for me was the investigation
into the collapse of salmon breeding in the host river of the reservoir. It
took a long time to work out that salmon fry only start to eat (after relying
on their yolk sac from birth) when water temperatures reach a certain level.
At first, the water went past the reservoir dam by being extracted from the
base - this meant that it was too cold for the fry to start feeding and they
starved to death. Once this was realised, extraction was taken from a mix of
bottom and top valves, allowing the water temperature to be controlled to
approximate what it should be naturally. Problem solved.
And I am off to buy a lawn sprinkler.
On 11/08/2022 19:36 ann sanfedele <[email protected]> wrote:
The geography of your location interests me - I can't remember what part
of the country you live in .. how is it that it could be so radically
different
in terms of water in alandmass so relatively small?
So awful what you are going through over there... it is unbearable here
too in many places and river sources are drying up but climate widely
different in our large continent and air conditioning is pretty widely
available.
ann
On 8/11/2022 1:53 PM, mike wilson wrote:
Blisteringly hot here for the second time this summer. The ground (clay soil)
is almost impossible to dig. I am nursing a spectacular case of sunburn,
despite being slathered in factor 50 - which can be quite fun in other ways.
Luckily, the extra-high temps only last a week or so but the average
temperature has also been high for a long time so far.
We are lucky in this region regarding water, due to a huge investment in a
gigantic reservoir that turned out not to be necessary. During the 1976/7
drought the then head of the water company was asked about the possibility of
rationing and said
"If it stopped raining today and we simultaneously lost all the water in all of our
other reservoirs, I might have to think about introducing rationing in about 18 months or
so."
So the plants are still getting watered.
On 11/08/2022 12:19 Daniel J. Matyola <[email protected]> wrote:
I am reading that the government in the UK is warning that Wildfires could
sweep across swathes of the country this weekend, with an “unprecedented”
risk.that devastating blazes may spread into residential areas, because of
bone-dry conditions and powerful wind.
I hope everyone across the pond is and stays safe. We live in such
difficult times.
Dan Matyola
*https://tinyurl.com/DJM-Pentax-Gallery
<https://tinyurl.com/DJM-Pentax-Gallery>*
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