Quiz help please

[froomeonthebroom]

Doing a charity quiz and could do with some help!

All the answers are rivers:

1. Stagnant area with a pound added (10 letters, starting with A,B or C)

1. Pass at 45 degrees (5 letters, starting with C)

1. Flu next year (4 letters, starting with L or M)

2 is Colne, I think - Col + NE

1 might be Blackwater - backwater with an L in it

Ah brilliant thanks!

I wonder if the third one could be the river Lune, because it is hidden in the phrase flu next year - it seems a bit torturous though.

Do they have to be UK rivers?

They do have to be UK rivers, and I had the same thought about Lune. Thank you 😊

Two more:

Water supply follows gold (6 letters, starting with N or O)

Right alternative (6 letters, starting with O, P, Q, R or S)

Orwell

Brilliant!

Just realised the final one is Rother. Thanks for your help, all.