Click on a monitoring station name to view live and historical river data.
Station
Parameter
River
Town
Afon Rhyd Y Valley At Dwyran Level (River Level)
Llanfairpwllgwyngyll
Barmouth Level (Tidal Level)
Barmouth Level (Tidal Level)
Cefni At Llangefni Level (River Level)
Llangefni
Cerist At Llawr Cae Level (River Level)
Machynlleth
Colwyn At Hafod Wydr Level (River Level)
Caernarfon
Dee At Bala Level (River Level)
Bala
Dee At Dee Bridge Level (River Level)
Bala
Dee At New Inn Level (River Level)
Bala
Dwyfor At Garndolbenmaen Level (River Level)
Garndolbenmaen
Dyfi At Dyfi Bridge Level (River Level)
Machynlleth
Dysynni At Pont Y Garth Level (River Level)
Tywyn
Erch At Pencaenewydd Level (River Level)
Pwllheli
Frogwy At Bodffordd Level (River Level)
Llangefni
Glaslyn At Beddgelert Level (River Level)
Caernarfon
Gwyrfai At Bontnewydd Level (River Level)
Caernarfon
Llyfni At Pont Y Cim Level (River Level)
Caernarfon
Mawddach At Tyddyn Gwladys Level (River Level)
Dolgellau
Peris At Nant Peris Level (River Level)
Caernarfon
River Braint At Dwyran Level (River Level)
Llanfairpwllgwyngyll
River Gelyn Level At Cynefail Level (River Level)
Bala
Seiont At Peblic Mill Level (River Level)
Caernarfon
Tide Level Level (Tide Level)
Criccieth
Tryweryn At Bala Weir X Level (River Level)
Bala
Wnion At Dolgellau Level (River Level)
Dolgellau