Related Clues:

• TVA project
• Gardiner, for one
• Airline once said to be 'ready when you are'
• It retains water
• Keep from running
• Thoroughbred's mother
• Leave it to beavers
• Beaver barrier
• Site of big deposits
• Block the flow
• Beaver's oeuvre
• Triangular-shaped letter
• Flow blocker
• Gamma follower
• It's at the river's end