I calculated mine based on a pond calculator on pondliners.com and
thought I had 1200 gallons (reasonably close). When I went to fill the
pond I timed how long it took to fill a 5 gallon bucket then timed how
long it took to fill the pond and did the calculation. (58 seconds to
fill 5 Gallons = 11.6 SECONDS PER GALLON) divide filling time in seconds
by your own rate of fill for a close estimate on the actual pond volume.
It turned out to be just over 1000 gallons if my estimate is correct.

Don Southern BC

Larry wrote:

Everyone here seems to know how much their pond holds. Is there a
formula to help one figure it out.

My pond is lower receptacle(pond) is 3'x3'xabout 16". Figuring out
the volume is easy but how does that translate into gallons?

Thanks,

Larry
Southern Ontario