posted 9 years ago
We are located in a temperate continental climate with plenty of rainfall, although the summers can get a little dry with up to 40-50 days without rain.
We're planning to dig up a couple of ponds and connect them via swales for some much needed water retention. The challenge is that the soil is quite sandy and I doubt that we will be able to keep the water in the pond without it draining away. There is no clay on site and transporting it from off the property in the large quantities that we need is not feasible.
It looks like the best bet is to get some EPDM foil/liner, but I wanted to check in if there were any other ideas on how to handle this. EPDM seems OK, but can get pricey and I never feel too comfortable "isolating" an element from it's surroundings via hard barriers.