is not. "it [is] not".
as the land of Egypt. Rain very rare in Egypt. Compare Zechariah 14:18.
wateredst... foot. Referring to the system of irrigation, by which the water was turned into different channels by the foot.
Related Commentaries of Deuteronomy 11:10
Deuteronomy 11:10
10 For the land, whither thou goest in to possess it, is not as the land of Egypt, from whence ye came out, where thou sowedst thy seed, and wateredst it with thy foot, as a garden of herbs: