1. Norwich?
2. Southampton?
3. Durham?
4. Londonderry?
5. Leeds?
6. Peterborough?
7. Carlisle?
8. Gloucester?
9. Belfast?
10. Colchester?
Answers
1. Wensum
2. Test and Itchen
3. Wear
4. Foyle
5. Aire
6. Nene
7. Eden
8. Severn
9. Lagan
10. Colne