How deep is deep enough?

[Jacobsal91]

Live in new england (usa) so it gets hot in the summer and snows in winter on a regular basis. I wanted to keep koi in a pond but dont really know how deep it should bee to help keep the tempurature regulated and what not. Any input on what to do?

[DragonFish71]

We're in Colorado so believe me, we know about freezing

Most pond forums will say 18 inches or deeper and keep water moving.

Our pond is 3 feet deep at on end and 18 inches at the other. We have a 3 section pond, large end then a stream to a smaller pond. We keep the pumps going through the winter and also use a stock tank heater in the big end and a floating ice melter.

here's some pictures to give you an idea of what I mean about the shape.

[Jacobsal91]

That is really nice. I want a pond about 2 feet at the deepest point. Will that be ok for freezing weather with pumps and airation? Waters still gunna be super cold is that safe? Sounds unreal to me