I have a large spring just outside of my pond. It runs about 16" wide year around. It is 15' below the top of the pond. I would like to know what my options are to pump that steady flow of spring water into the pond. Remember it has to be elevated up 15 foot high to reach the pond. I can run the water through the overflow pipe that generally isn't being used. Windmill? Solar? Artesian? I would have to run electricity around 600' to reach the area to run any kind of pump.