So how much oil is there in "lake" terms

So does all the known oil reserves equal a lake the size of Lake Michigan - Lake Washington - Fish Lake?

Trying to get a grip on how much there is.

Herb

If the total volume of the world's total known petroleum reserves was multiplied about 85 times, the result would be roughly equivalent to the volume of water in Lake Superior.

Another *very* rough equivalent: about 9 or 10 Lake Powells' worth.

Cheers.
-Dan