Related Clues:
- River blocker
- Flood barrier
- Boulder, for one
- It may get into deep water
- Farm mom
- Water blocker
- Flood-control structure
- Foal's mom
- Formal reception
- Flood zone sight
- Beavers' construction
- Dental guard
- Sire's mate
- Water holder?
- You progress down some waterways and get to this barrier...which bursts and capsizes your boat. See 70-across.