QUOTE(pinkgrapefruit @ Nov 16 2006, 04:56 PM) [snapback]1429435[/snapback]
Cladking,
I've been looking again at your theory and I'm still a bit confused about the way it works, I'm sorry if I'm repeating myself.
If you are saying that the Pyamids were built as 'ballast' to raise the water level of the Giza Plateau when it was flooded, then I hope I have got the wrong end of the stick.
I have been reading that Lake Moeris was possibly used as a resevoir to control the flood waters of the Nile, the volume of all the Pyramids put together would be inconsequential compared to the volume of the flood waters.
Have I not read you correctly?
I'm thinking the initial pyramid was a step pyramid and was for the purpose of distributing water to the desert over the ground. The water simply cascaded down the sides and was directed to ditches and retention basins. Perhaps they had enough wood to even make some wooden aquaducts to carry the water short distances over obstructions. I doubt the great pyramid used such techniques. Irrigation by this time would have been through underground channels and this structure was built largely just because they could.
Remember the pyramids are high up out of the valley and the flooding didn't reach these levels. But many of the inhabitants had little choice but evacuate the valley for part of the year due to flood waters. There's no doubt they did some farming in the desert and this is usually accounted for by suggesting it was less arid in the distant past. Irrigation, by means of the flooded valley, of the desert was mostly an impossibility because of the huge human toll in lifting the water to such an altitude.
There is little or no evidence that Lake Moeris was used to control Nile flooding or flow before 2300 BC. They had dug in the lake according to Herodotus and even built pyramids in it and constructed a dam across the Nile which would cause more water to go into the lake. I believe this work was done to control the inlet for the underground channel to Giza some 30 miles northeast and to maximize flow and pressure.