Related Clues:

• Flood preventer
• Mississippi feature
• Don McLean drove his Chevy here
• Hoover or Tarbela, e.g.
• Sire's counterpart
• River sight
• Paddock parent
• Where McLean drove the Chevy
• Anti-flood structure
• Irrigation project
• Dike
• Hoover, e.g.
• Flood guard
• Block (up)
• Glen Canyon structure