Dave,

I have read that a spring in a pond could be a negative. When my forage pond was renovated 4 years ago, I a couple of spots with water flowing to the surface. That pond stays full barring a drought like we are experiencing this summer. I will find out in a year or so.

CityDad,

I am going to put cinder block "igloos" at 10', 15' and 20'.

I subscribe to Pond Boss Magazine