HI all

I have a 3 acher pond in Leesburg Virginia. The Pond is 50 years old. The orginial owner said it was 15 feet deep when he first created it. Now the deepest part is only 5 feet with most of it 2 feet. There are tons of big bass 10 lbs and other fish in the pond. The algea has started to get real bad. The pond never freezes in the winter even though other water around it does. We are told it is a spring feed pond.

Questions....
What is the best way to solve this problem? What type of machine should be used to dredge?
How deep should I make the pond?
How long would a process like this take?

My wife would not like to lose the fish as they are fun to catch.

I have lots of land to place the dirt that is removed from the pond.