Why was there a need for such extensive organization along the Yellow river

Almost all the Chinese see themselves as the children of Yellow River. It is said that Egypt is the gift vouchsafed by the Nile. If there were no Nile, then it is hard to see how there could be an Egyptian civilization. The Yellow River has the same relationship with China. If China had no Yellow River, the Chinese wouldn't have a place to focus their spiritual energies on.