IF the pond is square, and IF the sides are straight so that it's square all the way down,
and IF the bottom is flat so that the pond is 4-ft deep everywhere, then the volume of
the pond is
13' x 13' x 4' = 676 cubic feet = 5,056.8 gallons (rounded)
IF the pond is full of water, up to the rim, then that's the quantity of water in it.
This pond can hold up to 533 gallons of water.
This size pond will hold up to 897.7 gallons of water.
A maximum of 1,651.7 gallons.
This pond can hold up to 201,974 gallons of water.
A pond this size holds up to about 1,955,108 gallons of water.
3,590,649.35 gallons.
Up to about 1,818 gallons of water.
1234.29 gallons of water
If the pond is uniformly 6-feet deep it would contain about 1,955,109 gallons of water.
This pond can hold up to 1,346,493.51 gallons of water.
This size pond can hold up to 2,992.21 gallons of water.
72,654 imperial gallons