Forgive me if you have all this, as I haven't read the posts. I just remembered something about the aquifers and it's on these posts.
[www.abovetopsecret.com] the last paragraph
[hubpages.com] ....it has some diagrams.
I think you find much more in old books of the time. If you are in a city ask in the reference section in the Central Library, and get them to check Reserve Stock, it's where fragile books are stored.
Also I am positive that the Egyptology experts at the British Museum, and the Smithsonian would be happy to help.There is also the huge stock at the British Library
I worked in the system for years and there is masses of information about everything around, but not uploaded.
Experts love a project...:)