The main design includes construction of a gentle slope on the left bank as you face the pond from the house. We will leave about a 1/2 acre of shallower water for aquatic vegetation and fish nesting/spawning areas . It will also promote a greater amount of bio-diversity amongst the the various animals, amphibians and reptiles that can use the pond. We have already hit another spring in that location. It is causing some delay in moving the earth, but is another excellent sign that when finished, the pond should fill adequately with fresh clear spring water.
Hilts is taking care to leave an adequate layer of clay on the bottom. Every time a dozer or excavator runs over a completed depth site, it compacts the clay to form the basin of the pond. Hopefully enough to prevent seepage and resulting water loss. It's my biggest fear that the pond will not/cannot hold the tremendous volume of water that it's size dictates. Much of my research alludes to this problem in some ponds.
We have saved the initial layers of top soil to place on the sides and top of the earthen berms that support the lower 3 walls of the pond. This should allow healthy establishment of dense ground vegetation to prevent erosion of the walls. Wall heights are determined by using an engineering transit. This will let us adjust the pond perimeter heights so we can "push" the water where we desire it.
Hopefully we've designed it well, are building it properly and will plant the edge correctly ... then ... sample, test and adjust our water (if necessary) so that it holds fish and promotes their healthy growth and development.
When finished, "the Lake" should turn into a truly excellent fishing impoundment, swimming hole and possibly duck hunting fly way. Ahhh, to dream.