Related Clues:

• Roosevelt or Hoover
• Fish ladder's locale
• Stop from running
• Structure for hydroelectric power
• Glen Canyon ___
• Severe backup
• China's Three Gorges ___
• Stream obstruction
• Beavers' structure
• Obstructive pileup
• Beaver-built barricade
• Problem on a channel
• River restraint
• A mad animal mum
• Barrier to hold back water