Gallons of water is Lake Winnipesaukee.
That number comes from this site:
http://www.winnipesaukee.org/watershed-facts.htm
While waiting for "something good" to happen with the sky at Sunset last night, I spotted the setting sun making the waves and water that where washing up on the Lake Shore Park beach look pretty cool..
So anyway.. here's what about 100 or so Gallons of the 625 Billion total looked like last night in the setting sun.