Related Clues:

• Danish capital?
• End to end?
• Backyard foragers, in places
• Ruby from Cleveland
• Unsatisfactory grade
• "Bury My Heart at Wounded Knee" author Brown
• Poor-but-passing grade
• Three-switch railroad track section
• River of England and Wales
• Rivers come before the sea, but this river comes after the sound of the sea
• That flows after the Exe
• The sound of the river comes after the sound of the sea
• Sounds like the sort of letter that goes by river
• After the sound of the sea it gets to the sea
• England-Wales border river