Related Clues:

• "American Pie" destination
• Flood prevention measure
• Protective bank
• Structure destroyed by Katrina
• Flood-control barrier
• Spillover stopper
• Artificial embankment
• Temporary flood stopper
• Water-level regulator
• Bank security feature
• River restraint
• Defence against floodwater, or ruffian's weapon
• It's used to protect against flooding
• An embankment built to prevent a river from overflowing
• It can be used the keep floodwater at bay, say