How many reservoirs are there in wales?

Answer 1

Anglesey (Ynys Mon)

Llyn Alaw - Water supply to much of north Anglesey

Llyn Cefni - Water supply to central Anglesey

Cardiff

Llanishen Reservoir - Water supply to Cardiff

Lisvane Reservoir - Water Supply to Cardiff

Carmarthenshire

Upper and Cwm Lliedi Reservoirs

Llyn Brianne

Llyn y Fan Fach

Usk Reservoir

Ceredigion

Dinas Reservoir

Teifi Pools

Llyn Teifi

Nant y Moch Reservoir

Conwy

Llyn Bodgynydd - supply for the Pandora lead mine (disused)

Llyn Brenig - part of Dee Regulation system - also in Denbighshire

Llyn Coedty - Water supply for Dolgarrog Hydroelectric station

Llyn Conwy - water supply for Llanrwst and Betws-y-Coed

Llyn Cowlyd - water supply for Conwy and Colwyn Bay,Water supply for Dolgarrog Hydroelectric station

Llyn Crafnant - water supply for Llanrwst

Llyn Dulyn - water supply for Llandudno

Llyn Melynllyn - water supply for Llandudno

Llyn Parc - supply for the Aberllyn mine (disused)

Llyn Elsi - water supply for Betws-y-Coed (disused)

Denbighshire

Aled Isaf Reservoir

Alwen Reservoir

Cae Llwyd Reservoir

Llyn Aled

Llyn Alwen

Llyn Brenig - part of the River Dee regulation system

Llyn Celyn - part of the River Dee regulation system. Its construction caused local outrage with the flooding of a Welsh village to enable water to be supplied to England

Pendinas Reservoir

Llyn Tegid (Bala Lake)

Nant-y-Ffrith Reservoir

Ty Mawr Reservoir

Gwynedd

Llyn Anafon - water supply for Llanfairfechan, Dwygyfylchi and Penmaenmawr

Llyn Arenig Fach

Llyn Arenig Fawr - water supply for Bala town

Llynnau Barlwyd - supply to Llechwedd slate quarry

Llyn Bodlyn - water supply to Barmouth. Also supports the rare Arctic char

Llyn Bowydd - supply to the Blaenau Ffestiniog slate quarries

Llyn Cwm Corsiog - supply for Rhosydd slate quarry (disused)

Llyn Cwellyn - water supply to Bangor and parts of south Anglesey

Marchlyn Mawr - header reservoir for the Dinorwig power station hydroelectric system.

Llyn Peris

Llyn Padarn - part of the Dinorwig hydroelectric system

Llyn Stwlan - built for the hydroelectric Ffestiniog Power Station

Llyn Trawsfynydd - built for the Maentwrog Hydroelectric Power Station

Merthyr Tydfil

Llwyn-on Reservoir

Pontsticill Reservoir, including Pentwyn Reservoir

Neath Port Talbot

Eglwys Nunydd - water supply to Corus Group steel-works at Port Talbot

Pembrokeshire

Bosherston lakes - amenity reservoir

Llys-y-Frân Reservoir

Rosebush Reservoir

Powys

Taff Fawr Reservoirs- A chain of three reservoirs supplying the Rhondda and Taff valley and Cardiff with water

Beacons Reservoir

Cantref Reservoir

Taff Fechan Reservoirs - a chain of four reservoirs also supplying the Taff valley and Cardiff with water

Upper Neaudd Reservoir

Lower Neuadd Reservoir

Doly y gaer Reservoir

Pontsticill Reservoir

Elan Valley Reservoirs - a group of reservoirs supplying Birmingham and parts of the West Midlands conurbation with drinking water

Claerwen Reservoir

Craig-goch Reservoir

Penygarreg Reservoir

Garreg-ddu Reservoir

Caban-coch Reservoir

Llyn Efyrnwy (Lake Vyrnwy) - supplies water to the Liverpool area

Talybont Reservoir

Ystradfellte Reservoir

Llyn Clywedog

Swansea

Cray reservoir

Swansea Barrage

Torfaen

Llandegfedd Reservoir

Answer 2

The best places to build resevoirs is in an area with a high rainfall, Wales has a high average rainfall.