| 100% | PECOS | 5 | River from New Mexico that flows into the Rio Grande |
| 73% | PECOS | 5 | River that flows from New Mexico through Texas to the Rio Grande |
| 59% | PECOS | 5 | River through New Mexico that feeds the Rio Grande |
| 53% | PECOS | 5 | River that empties into the Rio Grande |
| 46% | RIOGRANDE | 9 | River that flows from Colorado to the Gulf of Mexico: 2 wds. |
| 43% | OSAGE | 5 | River that flows into the Lake of the Ozarks |
| 43% | TEES | 4 | River that flows into the North Sea at Middlesbrough |
| 42% | ILLER | 5 | River that flows into the Danube in the center of Ulm |
| 42% | CHERWELL | 8 | Oxfordshire river that flows into the Thames |
| 42% | PARNAIBA | 8 | Brazilian river that flows into the Atlantic Ocean |
| 42% | AAR | 3 | Swiss river that flows into the Rhine (Var.) |
| 42% | CHAUTAUQUA | 10 | New York lake that flows into the Allegheny |
| 42% | MURRAY | 6 | River rising in New South Wales, Australia, that flows into the sea at Encounter Bay |
| 41% | RIO | 3 | ___ Grande (river that flows to the Gulf of Mexico) |
| 41% | RANCE | 5 | River in NW France that flows into the English Channel between Dinard and Saint-Malo |
| 41% | BROWNSVILLE | 11 | Port on the Rio Grande, Texas, US, across the border from Matamoros, Mexico |
| 40% | DART | 4 | River in Devon that flows into the English Channel at Dartmouth |
| 40% | DANUBE | 6 | Major European river that flows into the Black Sea |
| 40% | AARE | 4 | River that flows from the Bernese Alps |
| 40% | STOUR | 5 | River in Kent that flows into the English Channel at Pegwell Bay |
| 39% | VOLGA | 5 | Longest river in Europe that flows into the Caspian Sea |
| 39% | OUSE | 4 | 143 mi. British river that flows into the Wash |
| 39% | ERIE | 4 | Great Lake that the Niagara River flows from |
| 39% | MOISIE | 6 | River in Quebec, Canada, that flows into the St Lawrence River near Sept-Iles |
| 38% | SNOWY | 5 | — River, stream that flows into the Bass Strait near Orbost, Victoria, Australia |
| 38% | OISE | 4 | 212 mi. river that flows into the Seine in the suburbs of Paris |
| 38% | ROSWELL | 7 | City in New Mexico, US, that housed the Walker Air Force Base from 1942-67 |
| 38% | EMS | 3 | River rising in NW Germany that flows into the North Sea near Emden |
| 36% | AVE | 3 | 52 mile long Portuguese river that flows into the Atlantic at Vila do Conde |
| 36% | ORB | 3 | Beziers' 84 mile long river that flows into the Mediterranean at Valras-Plage |