Conversation so far:
when does the growing season end in egypt
The Season of the Harvest or Low Water was the third and final season of the lunar and civil Egyptian calendars.
why is the season of the harvest in egypt also called low water
The Season of the Harvest was known to the Egyptians themselves as Low Water, in reference to the state of the Nile before the beginning of its annual flood.

Question: how long did the season last
Self-contained rewrite: how long did the season of harvest last in egypt