Mine is about 2/3A and only filled by rainfall. I have right at 1.5A of runoff. It stays pretty full most of the year so far. When we get a good soaker rain it overfills. We don't have a well either.

The people who say I can't do it can just sit the @^#% down and watch me. Friends call me Rusto I also subscribe to pond boss mag. http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=504716#Post504716