Good video on repairing leaky ponds. It's pretty general but he brought up stuff i hadn't heard of before. Another interesting note is the sidewalls at 30 degree slope. That's basically the same 2:1 slope Zach Weiss uses.
Sometimes the answer is nothing
Then YOU must do the pig's work! Read this tiny ad. READ IT!
permaculture bootcamp - gardening gardeners; grow the food you eat and build your own home