| Your contractor and the bait guy know the local soil and will probably give you better advice than we will. Looks like a 2:1 side slope. That would make them about 28 ft wide, more than half-again larger in volume than you led us to believe.
I wouldn't go deeper for fry ponds. You want to maintain good oxygen to the bottom and the deeper the pond, the more chance of stratification. In the winter you want to dry the bottom. You have no topography so I can see now that getting them completely dry probably isn't going to happen. However, the deeper you go, the harder it is to dry them. Besides you are going to be using electricity to pump them down.
I would still ask the guy to put a little slope on the bottom when he's doing the final grading - even if its only a couple of inches.
You are closer to the coast than I imagined.
-steve hopkins |