The big pond and to the NE is at the lowest elevation.Sof the big pond is the highestelevation, but I don't think elevation changes more than50 ft. at the most, from any two points in this photo. I know there is a lot more to it than this but thought it would be interesting to see what predictions were made and who was closest. Also, the pond has about 20 ft. of dam heighton the long side facing the NE.
To give some size perception, there are a couple of houses and barns on the right side of the pic.