Jamieson, Fausset and Brown on Genesis 47:11

11. Joseph placed his father and his brethren ... in the best of the land--best pasture land in lower Egypt. Goshen, "the land of verdure," lay along the Pelusiac or eastern branch of the Nile. It included a part of the district of Heliopolis, or "On," the capital, and on the east stretched out a considerable length into the desert. The ground included within these boundaries was a rich and fertile extent of natural meadow, and admirably adapted for the purposes of the Hebrew shepherds (compare Ge 49:24; Psa 34:10; 78:72).