Dee Upper above Alwen

This operational catchment is part of the Dee management catchment and is managed by The Environment Agency (ENG) and Natural Resources Wales (WAL)

Caletwr

Ceidiog

Dee - Alwen to Llyn Tegid

No flood warnings

Dee - upstream Llyn Tegid

Gelyn

Glyn

Hesgin

Hirnant

Llafar

Lliw

Llynor

Meloch

Mynach

Trystion

Tryweryn - Dee to Mynach

Tryweryn - Llyn Celyn to Llyn Treweryn Inlet

Tryweryn - Mynach to Llyn Celyn

Twrch

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