Location loc1 = new Location (20, 30, "Egypt");
	Location loc2 = new Location (5, 25, "Egypt");
	Location loc3 = new Location (10, 12, "Egypt");
	Location loc4 = new Location (6, 23, "Egypt");
	Location loc5 = new Location (7, 15, "Egypt");
	Location loc6 = new Location (4, 3, "Egypt");

	IRiver source1 = new Source (loc1);
	IRiver source2 = new Source (loc2);
	IRiver source3 = new Source (loc5);

	IRiver conf1 = new Confluence (loc1, source1, source2);
	IRiver conf2 = new Confluence (loc6, conf1, source3);

	Mouth mouth1 = new Mouth (loc4, conf2);