I know that some express a concern about springs in a pond, but they are not always bad. It does not matter where the spring enters the pond, but rather the elivation of the top of the water that feeds the spring. Think of a spring as a tube that is connected to a bucket with the other und entering you pond. If the bucket sits higher than the top of the pond, it will likely not cause a leak unless the tube has more holes in it lower than your pond. If the water in the bucket always stays higher than your pond, it will also not cause a leak. If the water level in the bucket drops lower than your pond, then your pond will keep the bucket level at the same level as your pond and cause the pond level to drop. We hit quite a few springs when digging our acre+ pond and they have only provided benefits to us. A topography map of the greater area where you live can help you determine the odds for your pond, but either way, you'll find out soon. Good luck!
