There are 269,576 US gal/sq. ft of water at the Mariana Trench at its maximum known depth of 36,037 ft. To calculate this answer yourself, follow these simple steps:
Multiply the depth 36037 ft by 7.48052 to get the gallons of water in one square foot 36037 ft × 7.48052 = 269,575.5 US gal/sq. ft.
Verify this result using our gallons per square foot calculator.
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