The last couple years I have been getting into building ponds for my restoration work for my day job and that then inspired me to start building ponds on my own wild homestead. The ponds for my restoration work tend to rely on excavators to do the work but the ponds on my own
land are all dug by hand with a shovel and a wheelbarrow. I'm slowly expanding the ponds at my own place but I need to seal up the dam on the largest one next year. I'm planning on using a sodium bentonite clay layer with a gley layer of animal manure,
hay and soil on top of it to seal up the dam. I want the
water to soak in slowly through the bottom of the ponds but not through the dam.
Eventually I will be building several additional large (for my land) ponds with sealed dams and a bunch of smaller pools along the seasonal stream that connects all the ponds but these pools won't be sealed. All together the ponds and pools
should hold approximately a years worth of water for an average family of 4 in the United States when full. But they should hold far more
underground as groundwater and I really hope this will result in the groundwater level rising at the lower end of my property which will help my lower
pond stay full in the summer. At least I hope so!
For my restoration work I'm planning on building a series of ponds that will be spring fed and keep water year-round. These ponds are going to be used for environmental education activities such as field trips by
local K-12 classes. This should be a lot of fun and I'm really looking forward to it!