| 100% | ZAMBEZI | 7 | River that is bordered by Zambia and Zimbabwe |
| 50% | LIMPOPO | 7 | River that serves as the border between Zimbabwe and South Africa |
| 47% | IOWA | 4 | Its eastern and western borders are formed entirely by rivers |
| 47% | IOWA | 4 | Its east and west borders are formed entirely by rivers |
| 46% | IOWA | 4 | Only state whose west and east borders are formed entirely by rivers |
| 45% | KARIBA | 6 | Dam on the Zambezi shared by Zambia and Zimbabwe |
| 43% | URUGUAY | 7 | __ is bordered by Brazil and Argentina |
| 42% | EBRO | 4 | River that was the ancient dividing line between Rome and Carthage |
| 42% | NILE | 4 | River that Khartoum and Cairo are on |
| 42% | VICTORIAFALLS | 13 | Landmark on the border between Zambia and Zimbabwe |
| 41% | ANGOLA | 6 | Country bordered by Congo, Zambia and Namibia |
| 41% | MORAVA | 6 | River that forms the border between Slovakia and Austria |
| 41% | MEKONG | 6 | River that forms the border between Laos and Myanmar |
| 41% | CAM | 3 | River that flows through and is hidden in "Cambridge" |
| 40% | SEA | 3 | It may be bordered by beaches and cliffs |
| 40% | NEMO | 4 | Fish that was found by Marlin and Dory? |
| 40% | MDL | 3 | Land border that was decided by the Korean Armistice Agreement and which is surrounded on either side by a buffer zone (abbr.) |
| 40% | ODER | 4 | River that forms part of the border between Germany and Poland |
| 40% | TAMAR | 5 | River that forms most of the border between Cornwall and Devon |
| 40% | ORINOCO | 7 | River that forms part of the border between Colombia and Venezuela |
| 40% | MOSELLE | 7 | River that forms part of the border between Germany and Luxembourg |
| 40% | DOURO | 5 | River that forms part of the border between Spain and Portugal |
| 40% | RIONEGRO | 8 | River that forms part of the border between Colombia and Venezuela |
| 39% | ELBE | 4 | River that formed part of the border between East and West Germany |
| 39% | SOCCER | 6 | Sport that was played by Pelé and David Beckham |
| 39% | DIARIES | 7 | Records that were kept by Nin, Jung and Frank |
| 38% | YALU | 4 | River that forms a large part of the border between North Korea and China |
| 38% | GOOD | 4 | "___ Eats," TV cooking show that is created and hosted by Alton Brown |
| 38% | BOOKS | 5 | *Rare editions or classics, that are often cherished and collected by bibliophiles |
| 38% | SNC | 3 | American cable company that is owned jointly by ABC and Group W : Abbr. |