Isaiah 19:5-10 5 The waters from the sea will dry up, And the river will be parched and dry. 6 The canals will emit a stench, The streams of Egypt will thin out and dry up; The reeds and rushes will rot away. 7 The bulrushes by the Nile, by the edge of the Nile And all the sown fields by the Nile Will become dry, be driven away, and be no more. 8 And the fishermen will lament, And all those who cast a line into the Nile will mourn, And those who spread nets on the waters will pine away. 9 Moreover, the manufacturers of linen made from combed flax And the weavers of white cloth will be utterly dejected. 10 And the pillars of Egypt will be crushed; All the hired laborers will be grieved in soul.
Now I'm not sure what's going to happen with the sea, but a number of things could happen to stop the flow of water in the Nile. The Nile river actually begins in two different countries. Ethiopia and Uganda. The Blue Nile flows from Ethiopia, and the White from Uganda. The map can be seen here.
Looking through the news, this article, War Over the Nile, caught my attention. It seems that the Sinai pennisula and its northern border with Israel are not the only places that Egypt is having trouble. It will be interesting to see how this develops.
It looks like Egypt (along with the rest of the entire Middle East) is in for a rough time, but this gives me hope:
Isaiah 19:17-22 18 In that day five cities in the land of Egypt will be speaking the language of Canaan and swearing allegiance to the LORD of hosts; one will be called the City of Destruction. 19 In that day there will be an altar to the LORD in the midst of the land of Egypt, and a pillar to the LORD near its border. 20 It will become a sign and a witness to the LORD of hosts in the land of Egypt; for they will cry to the LORD because of oppressors, and He will send them a Savior and a Champion, and He will deliver them. 21 Thus the LORD will make Himself known to Egypt, and the Egyptians will know the LORD in that day. They will even worship with sacrifice and offering, and will make a vow to the LORD and perform it. 22 The LORD will strike Egypt, striking but healing; so they will return to the LORD, and He will respond to them and will heal them.