Here's a picture. Drizzle's a bit blurry, but you get the idea. The green hose goes to the pond. Normally the hose is connected at the middle for the over flow, but it had been freezing so I'd put it down at the bottom to drain the tank. Obviously it was no longer freezing when this picture was taken.
This is what the area looked like in the summer.
Here's what it looks like now.
I looked at the pond one day when it wasn't raining and realized that the ducks had filled it with the dirt from around it. A few inches of water was above the mud in the pond, and when it rains the whole area floods because the ground around the pond is lower. As spring arrives I have a feeling I'm going to have to clean out the pond and fence of the area if there is to be any hope of having a lovely shade garden around my pond again this year.