Check your fresh air intake in front of your windshield theres a plastic cover under the grid if its loose the seal has been broken and water collects under the dash I cleaned mine and put a bead of silicone to seal it In my '94 YJ, it was coming from water coming between the windshield frame and the seal below it, right behind the hinges. This lead to water drops landing on my left foot and the passanger's right foot. A new seal was all that was needed (about an hour worth of work to take the top off, undo the roll cage and change the seal). also check the drain tube that is in the fresh air intake box it will plug . or in my case it was long enough to touch the manifold and melted shut.
Assuming your measurements are in feet, this volume would contain 6,272,640 cubic feet of water.
If memory serves me correctly, a gallon of water weights 8.34 lbs. That would be about 48 gallons. About 3 feet X 4 feet X 5 feet.
16 Feet
180/62.5 = 2.88 cubic feet
About 100 feet.
By them having webbed feet their feet help push the water behind them with out any holes
87,537 gallons of water.
nothing
It would require 74,530 US gallons of water.
1.6042 square feet (rounded)
35994 feet of water divided by 6 feet of water = 5999
Just the liquid itself would occupy about 0.1605 cubic feet.