Just a quick update...
Still fighting a leak that generates 5-7gpm somewhere under the base of the dam. Running water has not stopped below the toe of the dam since it was initially built.
Despite 2 years of reconstruction efforts and 2600 lbs of polymer sealant, the pond will not come close to full pool.
My next course of action will be building a small pond below the dam to capture the water loss and pump it back into main pond. It's not an ideal solution, but starting over is not an option. This solution will cost me almost nothing and hopefully keep the volume of water coming in higher than what leaks out.
If it's a small pond that you will be constructing, look at lining the pond to make sure that it doesn't leak.
