Related Clues:
- Water flow stoppers
- Beaver constructions
- That's for hers to keep the water back
- Projects for beavers
- Blocks (up)
- Electricity generators
- Blockades, of a sort
- Beavers' constructs
- Beavers build them
- They may cause course reductions?
- Beavers' projects
- Beaver-built barriers
- River regulators
- Creek blockers
- Lake creators