| 100% | DEADSEA | 7 | Salty lake that forms part of Jordan's border |
| 59% | HURON | 5 | Lake which forms part of Michigan's northern border |
| 57% | NIAGARA | 7 | River that forms part of the U.S.-Canada border |
| 55% | RHINE | 5 | River that forms part of the France/Germany border |
| 54% | GUADIANA | 8 | River that forms part of the Spain-Portugal border |
| 54% | WABASH | 6 | River that forms part of the Illinois-Indiana border |
| 52% | ODER | 4 | River that forms part of the border between Germany and Poland |
| 52% | ORINOCO | 7 | River that forms part of the border between Colombia and Venezuela |
| 52% | MOSELLE | 7 | River that forms part of the border between Germany and Luxembourg |
| 52% | DOURO | 5 | River that forms part of the border between Spain and Portugal |
| 52% | RIONEGRO | 8 | River that forms part of the border between Colombia and Venezuela |
| 51% | DEADSEA | 7 | Part of Jordan's border |
| 51% | ELBE | 4 | River that formed part of the border between East and West Germany |
| 51% | MAMORE | 6 | River rising in the Andes that forms part of the Bolivia-Brazil border |
| 49% | DOURO | 5 | River that forms part of the border between Spain and Portugal before flowing west to the Atlantic |
| 47% | NESS | 4 | Loch that forms part of Scotland’s Caledonian Canal |
| 46% | ELBE | 4 | It formed part of East Germany's border |
| 46% | ODER | 4 | It forms part of Germany's eastern border |
| 45% | YALU | 4 | River that forms a large part of the border between North Korea and China |
| 44% | OHIO | 4 | River that forms much of Kentucky's border |
| 44% | BANISTER | 8 | Handrail that forms part of a staircase |
| 44% | GILBERT | 7 | Island group that forms part of Kiribati |
| 44% | ULNA | 4 | Bone that forms part of the forearm |
| 44% | DOMINICAN | 9 | Country that forms part of Hispaniola, __ Republic |
| 44% | MINARETS | 8 | Tall towers that form part of mosque architecture |
| 43% | IOWA | 4 | The Big Sioux River forms part of its border |
| 43% | DEE | 3 | River that forms part of the England/Wales boundary |
| 43% | SKETCH | 6 | Segment that forms part of a longer comedy show |
| 43% | LUNGE | 5 | Leg stretch that forms part of a warrior pose |
| 43% | CYMBALS | 7 | Percussion discs that form part of a drum kit |