"surface area per gallon"
This has nothing to due with the total evaporation. I have never seen surface area per gallon correlated to evaporation. Increased surface area does correlate to increased evaporation though.
"Dams condense water into small areas this by definition increases surface area"
Where in the definition of condensing does it allude to changing the surface area. Condensing is a reduction in volume. I don't think that we are changing the volume of the water; only its shape. And anyway, I thought you were argueing the opposite about surface areas/dams?
"A weather map does show that but for a storm to keep up its intensity it must pull moisture from on land sources (hurricanes for example)."
Actually a weather map does show that. My training is in geological engineering. I do not claim to be a meteorologist, but we do cover weather patterns in many of my classes. Major storms systems come from large bodies of water. Your example of hurricane does an excelent job of demonstrating MY point, not yours. The hurricane builds up over the ocean, and then "piddles out" once it reaches land. It does not "pull moisture from land sources." It rains. Rain means that it is dropping water.
Please conduct this experiment:
You will be able to decide for yourself if SA effects evaporation.
I apologize to others for poluting your nice thread with a different argument.
BTW, the first "Guest" post was mine. The others are not. I do agree with her though.