I am planning on building 3 ponds all under 1 acre, 2 will be shallow ponds(6 foot) for cows and 1 pond i want to build deep(15 ft +) and put fish in it., my water table is approx 3 feet deep. I have an excavator, a dump truck and a son that will be out of school(all summer), the ponds are all in flat lowlands. any advice would be much appreciated, i plan on starting in 1-2 weeks.

here are a couple of questions that i currently have.
1. how will i build the deep pond if the water level is so high?
2. will the water stay at the current water level, or will the water rise slightly by taking the compaction and weight of the soil off of it?

thanks in advance for any and all help.