How many gallons of water in a pond 4.58'x3'x1.42 deep?

Answer 1

(4.58-ft x 3-ft x 1.42-ft) x (1,728 cubic inches per cubic foot) / (231 cubic inches per gallon) = 145.95 gallons.

Note:

That's the capacity (volume) of the hole in the ground described.

We have no way to know how much water is in it at the moment.