Related Clues:

• Longest African river
• River past Thebes
• 4,160-mile-long river
• Cairo/Giza separator
• The Aswan dams it
• River of Memphis
• Khartoum's river
• Aswan river
• Aswan Dam's river
• Lake Victoria outflow
• With 66-Across, Egyptian agricultural area
• ''Aida'' backdrop
• Memphis's locale
• Asp's home
• Rosetta is on it