| AMAZONRIVER | It's drainage basin is the world's largest |
| BOLE | Sounds like the basin is made from the trunk (4) |
| CONTINENTALDIVIDE | Drainage basin running through the Canadian Rockies, ___ ___ of the Americas |
| DIVIDE | The Continental ___ (Drainage basin running through the Canadian Rockies) |
| AMAZON | River with the world's largest drainage basin |
| ARAL | ? Sea, body of water east of the Caspian Sea straddling Uzbekistan and Kazakhstan whose eastern basin is now called the Aralkum Desert |
| RUPERTSLAND | Canadian territory originally held by the Hudson's Bay Company that comprised the drainage basin of Hudson Bay (7,4) |
| GRANDTETON | Height of the Snake River drainage basin |
| SINK | Which kitchen basin is used for washing dishes, etc (4) |
| SHED | Word meaning "discard", as in the water of a drainage basin; or, an outhouse or hut for bikes, cattle, garden tools or potting-up plants (4) |
| NILE | River whose drainage basin covers eleven countries |
| CATCHMENTAREA | River drainage basin (9,4) |
| PLAYA | Desert drainage basin |
| FAIRPLAYA | Average desert drainage basin? |
| TIEPOLO | Painter whose magnum opus in paint on the ceiling at the Wurzburg Residence of the continents Africa, America, Asia and Europe is the world's largest fresco (7) |
| LINER | The Icon of the Seas is the world's largest |
| BRAINS | What made you think that basin is out to catch rain? (6) |
| ROSS | About the size of France, the ____ Ice Shelf is the world's largest body of floating ice (4) |
| OCEAN | The Pacific is the world's largest and deepest one |
| OPAL | The Olympic Australis is the world's largest discovered one |
