February fill-dike? Not in the south it ain't - Drought Warning !!

Discussion in 'General Gardening Discussion' started by alex-adam, Feb 20, 2012.

  1. alex-adam

    alex-adam Super Gardener

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  2. Scrungee

    Scrungee Well known for it

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    I've just been reading that report and I'm in the middle of the area affected.

    [​IMG]
     
  3. *dim*

    *dim* Head Gardener

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    I don't understand why farmers dont sink boreholes and irrigate that way ...

    that is what most/many farmers in Africa do, even when there is no drought

    my first property was a 6 acre smallholding .... 1st thing I done was have a borehole sunk and a submersible pump installed .... I never installed an expensive irrigation system, but pumped the water into a large resevoir that was 6 meters high ... the tank had a level switch that automatically switched the pump on and off when levels of water in the reservoir were high or low

    the pressure was strong and I could water the whole property with a hose

    it pays itself off over a short period of time, and many homeowners have boreholes with sophisticated pop-up irrigation systems connected to computers

    last year here in cambridge, we had a drought, and farmers lost thousands of pounds of crops because they were not allowed to water them
     
  4. lazydog

    lazydog Know nothing but willing to learn

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    plenty of water in the Severn running into the sea?????????:what:
     
  5. ARMANDII

    ARMANDII Low Flying Administrator Staff Member

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    Water extraction is more closely controlled in the UK, dim. Sinking boreholes willy nilly is insular thinking and can have a negative effect on the water table:nono::nono:.:whistle: South Africa isn't as densely populated or industrialised as these little Isles where the growing population is outstripping the availability of water from underground sources and the rainfall we get. We also have to balance that with our surrounding ecology and wildlife needs.:D
     
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    • *dim*

      *dim* Head Gardener

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      the water taken from the ground is watered back into the ground so the water table gets replenished?

      and bear in mind, that most parts of the UK are low lying .... as an example, cambridge is only 15m above sea level

      :scratch:
       
    • ARMANDII

      ARMANDII Low Flying Administrator Staff Member

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      Unfortunately, that makes no difference, dim. We're all aware of the UK's geographic and ecological details, which is why over the centuries we had made reservoirs to bolter the shortfalls of natural drought and the burgeoning industrial and growing population needs. The are quite a few examples of us draining the the land to make way for growing crops, Lincolnshire Fens being an example, where the water table was reduced dramatically in an area where, increasingly, there is less rain fall than there is consumption. The East side of the country becoming drier, with less rainfall but still subject to flooding when the occasional bad storm arrives.

      We have the biggest man made reservoir in Europe [Rutland Waters} but that hasn't made any difference to our plight. Our British climate is changing and definitely becoming drier so a free for all of digging bore holes without management or licence will only lead to a lowering of the water tables in the different areas of the Isles. The days of doing "Stuff you Jack, I'll do what I want without thought of the surrounding population, ecology and wildlife" have long gone.:D
       
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      • pete

        pete Growing a bit of this and a bit of that....

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        We have been here before and we will be here again.
        Floods usually follow dry spells. Its just a matter of time.

        Rising population and everyone's higher usage is the problem, I'm willing to bet we use more water per head today than ever, add to that more people than ever, and you get to where we are now.
         
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        • *dim*

          *dim* Head Gardener

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          dont know .... I think, people are not fully aware of sinking boreholes in the UK .... people who I have spoken to, are not all that familiar with how it works

          and saying that, it is not illegal to sink a borehole here in the uk (as far as I am aware) .... here is a company who drills:

          Borehole Drillers

          and its not like you are transporting the water far away .... you irrigare on your land where the water is extracted, so much of it returns to the water table

          and here is the official publication (you need to seek permission first) and from what I have read, they are more concerned with pollution that with drilling and using water

          http://publications.environment-agency.gov.uk/PDF/SCHO0303BFEK-E-E.pdf

          saying all that, I don't know all the in's and outs of this at this stage, but it is not illegal when you have permission ....

          I rent and dont own my property, but if I do buy a decent sized property with a good sized piece of land, (1/2 and acre plus) .... one of the 1st things I will do, is look at installing an irrigation system with a borehole, so as to water my garden
           
        • pete

          pete Growing a bit of this and a bit of that....

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          I'm willing to bet that most water used on crops/gardens in summer is lost by evaporation, hardly any will get back into the water table.

          I've heard it said that summer rain, normal summer rain that is, has no effect on the water table.
          We rely on winter rains, when trees and other plants are not active, to fill the water table.

          Its the same old story, if we all had our own bore hole, then the water table would dry up, its only because we dont, that it still exists.
           
        • ARMANDII

          ARMANDII Low Flying Administrator Staff Member

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          All water extraction in the UK is licensed, dim, and it is illegal to drop a bore hole without applying for permission and a licence. Licences for water extraction aren't granted by the Water Authorities without taking into account the total water extraction taking place in that particular are taken into account and so aren't automatically granted. Farmers pay an exorbitant sum for water extraction from their rivers and are limited to a cap on exactly what they can take. Bore Holes, according to Defra, can not only affect the water table but have the potential for polluting it as well.

          Pete is spot on with his observations that droughts seem to be cyclic and will be alternated with really wet seasons, and that higher and rising population is one of the major problems.

          Your theory, dim, that by extracting water from a bore hole, irrigating your land with it equals out, is not quite correct, my friend. It is a recognised fact that a great proportion of such water is lost due to evaporation and in fact doesn't get returned to the water table. We need controlled management of water and week upon week of steady non stop rain is needed just to replenish the natural underground reservoirs and water tables :D
           
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          • *dim*

            *dim* Head Gardener

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            that is the case if you water at noon or during the day .... in South Africa, you water your garden during summer after 6pm .... the following morning, the soil is still damp

            even here in the UK, I water my own garden in the (very) late afternoon
             
          • JWK

            JWK Gardener Staff Member

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            We had a borehole on my family farm, there were also plenty of natural springs there to feed the water troughs. It just depends where you are in the country. Some farmers divert streams and create ponds, but they need a licence to do that, and usually the licences get revoked the minute the sun comes out for more than a week.

            Around here people have boreholes if they are rich enough in their back gardens. I recall this story about an MP watering his garden last time we had a water shortage locally, yet all us plebs weren't even allowed to use a hosepipe:
            Geoffrey Robinson in neighbours row over lake | Mail Online

            "While his neighbours struggled to keep parched gardens alive during the summer hosepipe ban, Geoffrey Robinson's ten-acre estate was a veritable oasis. Residents of exclusive Godalming were furious when they discovered the multimillionaire Labour MP was spraying hundreds of gallons of water on his landscaped-domain while their own gardens wilted in the heat"
             
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            • alex-adam

              alex-adam Super Gardener

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              Hi Pete, yes, although I live in a water-rich area now, I am from your neck of the woods.
              Now, a few years ago, when we here in N. Yorkshire were actually trucking water to south Yorkshire to keep the taps flowing, I could see the benefit of a National Grid of water pipes - (Decalare an interest here, as the former sales manager of a tube/pipe company, mainly involved with oil and gas) I, (along with others) suggested a similar arrangement for water, - well they can do it with gas, and petroleum, - why not water...?

              a-a
               
            • pete

              pete Growing a bit of this and a bit of that....

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              Yeah I know its normal to irrigate in the cool parts of the day/night, but the plants take up the water, lets face it, that's why you irrigate.

              The plants then transpire, and it all goes up into the atmosphere, good for the plants, but zero return for the water table.

              If it went back into the water table it wouldn't be worth doing.:D

              I did read once how many gallons an oak tree puts into the atmosphere on a summers day, its quite a lot.:)
               
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