Related Clues:

• Dutch engineering feat
• A big bank for a youngster back east
• Legendary Haarlem leaker
• Out of good IKEA construction in the Netherlands
• It's built as an ocean container
• Teeny organisation's infiltrated by opposing mole
• The genitals, we hear, of a mole?
• What sounds like region down below barrier
• Anti-erosion breakwater
• It might consist of sandbags
• Tropical storm protection
• Barrier along a bank
• Flood control structure
• Flood blocker
• It holds back the water in Holland