I own a spring fed pond. I would like to build a home next to this pond. The issue is that the space is a little narrow for building and I am concerned about flood risk.

My question is two fold:

-What are the issues and concerns with filling in a small part of the pond that I should be aware of?

-How do I locate the spring that feeds the pond? My thought is that the most important thing is not filling over that spring. If I can avoid that, I should be good.

Thanks!