My .62 acre pond that is 3.5 acre feet fills in a few weeks. Of course I have a well rated at 45 gpms.
I'm draining it this spring to correct a fish mistake and will refill it with the well.
Zoeconner,
Are you sure you have the watershed for that pond to fill on it's own? Maybe the pictures are deceiving but three of the sides look like they higher than the surrounding terrain won't let in water.