After taxes... roughly $2.73 ;-). Hmmm, a deep pond has more value than I thought! My pond calculates out to 3.7M Gallons total (0.6 acres, fairly deep) I think that is correct... but I didn't realize its water value is greater than the cost to dig it. $17K for my pond! Wow, time to dig some more holes and let them fill up.

Oh wait, I live in NY. Home of the fraking ban. No cash for me.