To create a clay pond, you just need lots of sticky, shiny clay – the type that rolls out in the hand like a sausage. At Lindengate we have lots of this type of soil deep below the site’s clay loam. The sticky clay has the air pockets squeezed out of it making it suitable for the creation of a water tight layer. ‘Puddle’ clay should have very few stones in it too. At Lindengate the soil is mainly clay so the main pond opposite the central lawn was lined successfully with clay dug from our site. Not all locations are suitable for clay ponds, for example, gravel, silt, sandy or peaty soils that are affected by ground water are not ideal. Neither are sites situated on a slope as the water can drain away. In the 19th Century the puddling process of lining ponds was also used for canal linings, for example at the Wendover Arm Canal which was once used to transport coal, flour, straw and manure through its waters.