Pond Boss Forums POND CONSTRUCTION Renovating a Pond or Lake? Making my pond a little bigger?

Here is a Topo of my land area. My pond is the one in the circle by the number 7. I have no idea what I am looking at so any help would be great? My watershed doesnt seem that big but I get run off from 3 different spots on the left side of my pond. Sometime for 3 weeks after the rain is gone.

P.S. That small creek that they show on this map is actually coming from the back side of my dam. I am not sure if it's from my dam or from a wet water spring?? When my pond is full it gushes out the back side at the bottom from what looks like a 2 inch hole. I can't tell though if it's from my dam or a spring in the ground.