In my research, I've found that the size of a 10,000-gallon pool can greatly vary based on its shape and depth. For instance, a rectangular pool might measure around 12 feet by 24 feet with an average depth of 5 feet. If you're thinking of a circular pool, a diameter of about 18 feet with a depth of 4 feet is roughly equivalent. Ultimately, the pool's dimensions can be flexible, as long as they add up to that 10,000-gallon capacity. Remember, these are just average measurements - the size of your pool may vary based on your specific needs and circumstances.