sounds like a bit more than a 'lump' if it's taller than the house!
I should clarify, the garden is on a slope so the lump is around 10" high, and is in the part of the garden which is higher than the ground floor of the house (its about level with the first floor).
After seeing mcmoonters pond post, it would be amazing to find something like that, however I don't think I would be that lucky.
Richc ...sounds like you need a divining/dowsing rod! [img] 
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Richc ...sounds like you need a divining/dowsing rod!
LoL, I suspect that wouldn't work at the moment as everything is a bit wet.
I might try this: [img] 
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circulating system pumps hot water around a loped domestic hot water circuit so you dont have to run taps to empty out cold water first.
My system does this but with a combi - the combi has a small hot tank integrated into it
Moonter towers has a Victorian rain water catching system the Mayans would be proud of. Rainwater is caught from the stables roof and canaled to a seperate water house. A substantial two storey house with no other purpose other than to store water. It then was gravity fed down to the geenhouses. A basement boiler room heated the greenhouses and all manner of exotic fruit was grown. Even today without heating we still grow peaches, nectarines, figs and grapes,
Fresh water came from a spring, which had its own water shed with filter beds. Amazing as it is sited alomost at the top of the hill.
These pics are from the thirties, things have decayed a little since then.
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I use an old plastic bin on bricks which is filled straight from the drain pipe using a 45deg elbow section (oiked from a skip). My overflow is a bit of garden hose (given to me by a neighbour) connected near the top (obviously) which then feeds into the drain. As an extravagance I use a £4 plastic tap from B'n'Q to fill the watering cans.
Oh it's all glamour round ours.
amazing.
I have a photo of my house from 1903. Which in hindsight leads me to believe the water tank isn't where I suspected it might be.
So it could be under the house after all .......
Richc ,maybe you should chuck a few Roman coins down, 'find' them amidst much publicity and get Time Team to come and discover your tank with their ground penetrating radar.
I have googled how much a ground penetrating radar scan would be, however its quite far down the list of shit I need to buy.
In the next few weeks we'll be installing a 75mx25mx cant remember the depth rainwater store!! Should be able to water a few gardens with that lot 😆
I looked into this but our house is very tall and there is no room to store water upstairs.
I have an "found" wheely bin, drilled and tapped attached to the down pipe for roof water and bath/sink water from the en suite which is ideal for watering the garden (large garden). I have another butt that runs off the garage roof that my wife fills with nettles to make "nettle tea" which is apparently great for the garden and a third for water from the front of the house which is much smaller and kept clean which is ideal for mopping the floors downstairs.
about 40 years ago, my parents had the sink and bath outlet intercepted through a filter (sand and foam cushion, net curtains I think ??? possibly not so good nowdays as I suspect people use a lot more soap/shampoo detergent and it's probably more powerful ?? than it used to be) (as well as every drainpipe to a barrell) as we lived in a non mains rural Scotland
1520ltr ex Orange juice tanks are available for about £100 .
1.6m tall and 1m diameter .
Perfect for storing a huge amount of rain water . No outlet so need a flange fitting to the base really . There is a 3M glue specially made for glueing PU so you could bond something on to the base .
The lids are big enough to allow human entry if you are approx 30" waist.
or send in a small child.
We recently took on an allotment, but there is no water supply so I built this rainwater harvesting system.
One small roof 2 square meters, flowing into a 1000 litre tank.
There is another 1000 litre tank further down the plot used for topping up from the top one.
Hozelock connectors from each tank means we have hose pipes to cover the whole plot.
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