Okie, yes, that is crazy. you don't mention the pond size, but here is my viewpoint. Without getting into too much detail, you do have the ability to counteract some of the evaporation during the summer months with well water (which contains no oxygen), but there's no way you'll fill a pond unless you have a big well and a lot of $$$. It takes 325,000+ gallons to fill an acre one foot deep, a well that runs 24/7 and produces 25 gallons per minute will get you 3 feet deep in a month. Be patient, let Mother Nature bring the water, then try to stabilize the level during summer if possible. (i.e. 50 acres of watershed on a 3 inch rain should bring close to 900,000 gallons, or 3 feet !