[RightWhale]

I for one appreciate that you bring numbers to the discussion. To get an idea of 200,000 gallons of water, oil, or milk, think of a railroad tank car, the older kind. It might hold 20,000 gallons. The newer tank cars used to transport bulk fuel are larger. Ten of the old style cars would hold 200,000 gallons. Just for scale.

[cogitator]

Ten of the old style cars would hold 200,000 gallons.

Which is a reasonably large amount, but of course the severity of a spill would be more accurately assessed on the basis of what was released, rather than a bulk amount of liquid.