What size pool has 250 gallons?

* 62,500 gallons (US) = 8,355 cubic feet

If the pool is 20 feet wide, and 70 feet long, it could be 5 feet 11 and a half inches deep all around.

* 62,500 gallons (Imperial) = 10,034 cubic feet.

If the pool is still just under 6 feet deep and 20 feet wide, it could be 84 feet long.