Geography Grilling

[The Mirrorball Man]

Originally posted by Curuquendil:
List the streams, rivers & tributaries which meet up with the River Anduin at one point. (In existence during the Third Age, to avoid any confusion.)

I will probably forget one or two, but I'll try...

The Langwell
The Greylin
The Rhimdath
The Ninglor
The Celebrant
The Limlight
The Entwash
The Erui
The Sirith
The Poros

Close enough?