Boreholes are they the answer to saving fisheries

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ALLROUNDERGREG says:

Boreholes are they the answer to saving fisheries

As you may know from some of my other posts we are in the process of getting a borehole drilled to top up our club lake that has been losing water for the last ten years or so. We have just renewed our lease for another 25 years. I was talking to the fishery manager from another local club who have had a bore running for two years now on a four and a half acre lake and they have bought the level up by two feet they are pumping at 20,000 ltrs a day this is the upper limit you can draw in 24hours without a abtraction licence .the bore cost them £11,000 it is a 100 mm bor at 115 metres deep. this is the same depth that our bore will be drawing water from the chalk below the london clay because our lake is 10 acres plus we have been advised by British Geological who did the ground and water surveys that we will need a 300mm bore three times the size and nearly three times the price. We have the agreement of the Enviroment Agency for the bore to go ahead and the drilling company are coming on tuesday morning for a site visit with their engineers to check access and the drilling options ect. If we do not have an extra source of water the lake in say ten years could be down to 6 acres or less so it is the answer we hope but nothing is certain.

Posted 359 days ago (25 June 2012 07:38)

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andyc40 says:

Re: Boreholes are they the answer to saving fisheries

I guess it depends where the lake is Greg and why you are losing water, is it just evaporation and lack of rain to keep it topped up? I don't know anything about this sort of thing but if boring into and taking water from the chalk aquifer has any effect on any chalk streams then I would say no it's not the way to keep a fishing lake topped up. cheers

I live with FEAR everyday sometimes she lets me go fishin

Posted 359 days ago (25 June 2012 10:20)

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ALLROUNDERGREG says:

Re: Boreholes are they the answer to saving fisheries

andyc40 said:

I guess it depends where the lake is Greg and why you are losing water, is it just evaporation and lack of rain to keep it topped up? I don't know anything about this sort of thing but if boring into and taking water from the chalk aquifer has any effect on any chalk streams then I would say no it's not the way to keep a fishing lake topped up. cheers

You are right there Andy that is why you have to have a survey done by BRITISH GEOLOGICAL at the cost of £600 This is then sent to the EA to examine along with the opinion of the effects if any it would have on the surrounding area .If it is seen to be to the detriment, permission will not be granted so there are safe guards agaist it effecting the surrounding enviroment. the aquifer that we will be drawing from is now at full capacity . The same aquifa in 1960 was at 75% because of the draw off mainly by the industries in the london area now most of that industrie has gone the aquifa is full and because it has been full since 2002 it is now causing sub surface flooding in the london area in deep basements and the tubes.

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Posted 359 days ago (25 June 2012 10:53)

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ALLROUNDERGREG says:

Re: Boreholes are they the answer to saving fisheries

Had the engineers on the lake today they have suggested three sites for the bore no problems with access for the drilling rig so that is another step nearer . they could not believe that such a lake could be in a metropolitan area . They got to the access road before me and phoned me on my mobil to say they thought they were at the wrong place I said no I will be there in a minute when I took them though the small gate they could not believe it the main access is at the back of the houses. and is totally hidden by trees.

Posted 358 days ago (26 June 2012 15:56)

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andyc40 says:

Re: Boreholes are they the answer to saving fisheries

Greg, thanks for the explanation, do they monitor the levels...so say in ten years time the aquifer is at 25% would they shut your borehole down? or is that it, you have it forever now. cheers

I live with FEAR everyday sometimes she lets me go fishin

Posted 358 days ago (27 June 2012 01:43)

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ALLROUNDERGREG says:

Re: Boreholes are they the answer to saving fisheries

andyc40 said:

Greg, thanks for the explanation, do they monitor the levels...so say in ten years time the aquifer is at 25% would they shut your borehole down? or is that it, you have it forever now. cheers

The bore is fitted with a water metre so that it can be checked and the aquifa is monitored all the time. In the case of the london aquifa a annual report is compiled on its overall level every twelve months by the E.A. who issue the abstraction licence which is issued for twelve years the cost of the licence varies with the amount of water you need in our case hundreds of pounds per year.