| NEISSE | Which river forms part of the boundary between Germany and Poland before it flows into the Oder? (6) |
| OSAGE | River crossed by trains between Kansas City and St Louis just before it flows into the Missouri River (5) |
| TWEED | Which river forms part of the boundary between Scotland and England? (5) |
| AMUR | What long river forms part of the boundary between China and Russia? (4) |
| ODER | River in central Europe that forms part of the boundary between Poland and Germany (4) |
| WAVENEY | River that forms part of the boundary between the counties of Norfolk and Suffolk (7) |
| STLAWRENCE | River which forms part of the boundary between Canada and the U.S. (2,8) |
| ORINOCO | Which river forms part of the border between Venezuela and Colombia? (7) |
| RIOGRANDE | Which river forms part of the US-Mexico boundary? (3,6) |
| IRONGATE | One of the names for a scenic 83-mile-long gorge on the Danube forming part of the boundary between Romania and Serbia (4,4) |
| STJOHN | River rising in Maine that forms part of the boundary between USA and Canada (2,4) |
| TAMAR | River that forms part of the boundary between Cornwall and Devon (5) |
| STOUR | Major river in East Anglia, part of the boundary between Suffolk and Essex |
| POTOMAC | What river forms part of the borders between Mary- land and Washington DC? (7) |
| URAL | River forming part of the boundary between Europe and Asia |
| NIAGARA | River, part of the boundary between Ontario and New York |
| URALS | Mountain range in western Russia; part of the boundary between Europe and Asia. (5) |
| POMERANIA | Historical area on the shores of the Baltic Sea, now divided between Germany and Poland (9) |
| ZETA | River that forms part of the border between Germany and Poland (4) |
| EAGLE | Bird of prey featured on the coats of arms of numerous countries including Austria, Egypt, Germany and Poland |
