The Nile Delta ( or simply <span style=margin-left:1px">) is the delta formed in Northern Egypt (Lower Egypt) where the Nile River spreads out and drains into the Mediterranean Sea. It is one of the world's largest river deltas—from Alexandria in the west to Port Said in the east, it covers of Mediterranean coastline—and is a rich agricultural region. From north to south the delta is approximately in length. The Delta begins slightly down-river from Cairo.