Fred
I am assuming you are talking about the depth? Mine goes from 4 ft at the deepest and goes to 3 1/2 feet deep. Bonnie is right with the formulas she gave. I have found the easiest way is to check your water gauge in your house when filling your pond. It is important to know how much your pond holds in the event you need to add medications, bacterias, enzymes or the like.
Carolyn
