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  • Parc Mine

    Parc Mine is located in the Gwydir Forest within the Snowdonia National Park, approximately 1.6km southwest of Llanrwst and approximately 5km north of Betws-y-Coed. Parc Mine was worked sporadically from 1855 to 1963, recovering over 10,000 tons of lead and 4,000 tons of zinc. The mine is interconnected via its underground workings with eleven other mines, and sits in close proximity to numerous other independent mines such as Hafna Mine and Pandora Mine. When the... More
    Closes 18 December 2045

  • Mwynglawdd Parc

    Mae Mwynglawdd Parc yng Nghoedwig Gwydyr ym Mharc Cenedlaethol Eryri, tua 1.6km i'r de-orllewin o Lanrwst a thua 5km i'r gogledd o Fetws-y-Coed. Bu gwaith achlysurol ym Mwynglawdd Parc rhwng 1855 a 1963 a chloddiwyd dros 10,000 tunnell o blwm a 4,000 tunnell o sinc. Trwy ei weithfeydd tanddaearol, mae’r mwynglawdd yn cysylltu ag un ar ddeg o fwyngloddiau eraill, ac mae'n agos iawn at nifer o fwyngloddiau annibynnol eraill fel Mwynglawdd Hafna a Mwynglawdd... More
    Closes 21 December 2043

  • Wemyss Lead & Zinc Mine

    The abandoned Wemyss Mine is 15km southeast of Aberystwyth, Ceredigion. It is located at the head of the Cwmnewydion valley, a tributary of the River Magwr, which joins the River Ystwyth at Abermagwr. The mine worked the Frongoch mineral lode alongside Frongoch and Graig Goch mines. Wemyss became an integral part of the larger Frongoch Mine and cannot be considered in isolation from its more illustrious neighbour. In the 1840s both mines came under the same... More
    Closes 26 October 2043

  • Gwaith Plwm a Sinc Wemyss

    Mae Mwynglawdd segur Wemyss ryw 15km i'r de-ddwyrain o Aberystwyth, Ceredigion. Mae wedi ei leoli ar ben dyffryn Cwmnewydion, un o lednentydd Afon Magwr, sy'n ymuno ag Afon Ystwyth yn Abermagwr. Gweithiodd y wythïen mwynau Frongoch ochr yn ochr â mwyngloddiau Frongoch a Chraig Goch. Daeth Wemyss yn rhan annatod o Fwynglawdd Frongoch ac ni ellir ei ystyried ar wahân i’w gymydog mwy disglair. Yn y 1840au daeth y ddau fwynglawdd o dan yr un berchnogaeth, ac fe... More
    Closes 26 October 2043

  • Cwmystwyth Lead Mine

    Cwmystwyth Mine is approximately 6km northeast of the village of Pont-rhyd-y-groes, Ceredigion. The mine covers around 250ha on the steep northern slopes of the Ystwyth Valley, with some minor workings on the southern slopes. Cwmystwyth exploited three mineral lodes over the course of its operation, namely Comet, Kingside and Mitchell. The earliest mining at Cwmystwyth has been dated to the Early Bronze Age, when copper was extracted from the Comet lode in an... More
    Closes 19 October 2043

  • Gwaith Plwm Cwmystwyth

    Lleolir mwynglawdd Cwmystwyth tua 6km i’r gogledd-ddwyrain o Bont-rhyd-y-groes yng Ngheredigion. Mae mwyngloddiau metel segur yn achosi llygredd sylweddol yng Nghymru, gan niweidio ecoleg afonydd gyda metelau fel cadmiwm, plwm, sinc a chopr. Mae tua 1,300 o fwyngloddiau metel segur yng Nghymru yr amcangyfrifir eu bod yn effeithio ar 700 cilometr o afonydd. Mae Cyfoeth Naturiol Cymru (CNC) a’r Awdurdod Glo yn gweithio gyda’i gilydd ar y... More
    Closes 19 October 2043

  • Nant y Mwyn Lead Mine

    The Nant y Mwyn mine is located close to the village of Rhandirmwyn in Carmarthenshire; approximately 10 km to the north of Llandovery. There is evidence of ancient mining (pre-Roman) at the site however most of the workings date from the 16th through to the 20th centuries. Mining activity at Nant y Mwyn mine during the early 20th century was intermittent and the site was abandoned during the early 1930s. The workings can be divided into two main... More
    Closes 19 October 2043

  • Gwaith Plwm Nant y Mwyn

    Lleolir mwynglawdd Nant y Mwyn gerllaw pentref Rhandir-mwyn yn Sir Gaerfyrddin; tua 10 km i'r gogledd o Lanymddyfri. Mae tystiolaeth o fwyngloddio hynafol (cyn-Rufeinig) ar y safle, fodd bynnag mae'r rhan fwyaf o'r gweithfeydd yn dyddio o'r 16eg ganrif hyd at yr 20fed ganrif. Ysbeidiol fu gweithgarwch mwyngloddio yn Nant y Mwyn ar ddechrau’r 20fed ganrif a rhoddwyd y gorau i’r safle yn gynnar yn y 1930au. Gellir rhannu'r gweithfeydd yn ddwy... More
    Closes 19 October 2043

  • Van Metal Mine

    Van Mine is located in the rural hamlet of Y Fan, approximately 3km northeast of Llanidloes, Powys. Van Mine was a former lead, zinc, and silver mine. It was one of the most productive lead mines in Europe in the 1870s. Records of mining trials date back to 1850, with the first ore produced in 1866. Production started to decline in the 1890s and eventually closed in 1921 primarily due to the fall in lead prices due to cheaper foreign imports. Several heritage assets... More
    Closes 19 October 2043

  • Mwynglawdd Metel y Fan

    Mae Mwynglawdd y Fan ym mhentref bach gwledig y Fan, tua 3km i'r gogledd-ddwyrain o Lanidloes, Powys. Roedd Mwynglawdd y Fan yn hen fwynglawdd plwm, sinc ac arian. Roedd yn un o'r mwyngloddiau plwm mwyaf cynhyrchiol yn Ewrop yn y 1870au. Mae cofnodion o dreialon mwyngloddio yn dyddio'n ôl i 1850 a chafodd y mwyn cyntaf ei gynhyrchu ym 1866. Dechreuodd cyfradd y cynhyrchu ostwng yn y 1890au ac yn y diwedd caeodd y mwynglawdd ym 1921 yn bennaf oherwydd y gostyngiad... More
    Closes 19 October 2043

  • Mwynglawdd Plwm a Sinc Dylife

    Mae Mwynglawdd Dylife 13km i'r gogledd-orllewin o Lanidloes, Powys, ar y ffordd fynyddig i Fachynlleth. Cafodd ei nodi fel un o brif ffynonellau metelau dalgylch Afon Dyfi ac mae'n gyfrifol am y ffaith fod Afon Twymyn yn methu cyrraedd safonau'r Gyfarwyddeb Fframwaith Dŵr Ewropeaidd ar gyfer sinc, plwm a chadmiwm. Roedd Dylife yn tynnu plwm a sinc o dair gwythïen: Dylife, Esgairgaled a Llechwedd Ddu. Mae'n bosibl bod y gweithfeydd cloddio cynharaf yn dyddio o gyfnod y... More
    Closes 19 October 2043

  • Cwmnewydion metal mine project

    The Cwmnewydion project is focused on Graig Goch mine and Frongoch Adit, which are situated within the Cwmnewydion valley, located approximately 1.5 km southwest of Trisant village and 3.75 km northwest of Pont-rhyd-y-groes in Ceredigion. The Nant Cwmnewydion watercourse flows along the valley floor immediately adjacent to the northern boundary of Graig Goch mine. Upstream to the east of Graig Goch mine is Frongoch Adit and Wemyss mine. Frongoch mine is further to the... More
    Closes 19 October 2043

  • Prosiect mwynglawdd metel Cwmnewydion

    Mae prosiect Cwmnewydion yn canolbwyntio ar fwynglawdd Graig Goch a Cheuffordd Frongoch, sydd wedi'u lleoli o fewn Cwm Cwmnewydion, tua 1.5 km i'r de-orllewin o bentref Trisant a 3.75 km i'r gogledd-orllewin o Bont-Rhyd-y-groes yng Ngheredigion. Mae cwrs dŵr Nant Cwmnewydion yn llifo ar hyd llawr y dyffryn yn union gerllaw ffin ogleddol mwynglawdd Graig Goch. I fyny'r afon i'r dwyrain o fwynglawdd Graig Goch mae Ceuffordd Frongoch a mwynglawdd Wemyss. ... More
    Closes 19 October 2043

  • Metal mine water pollution

    Pollution from Abandoned Metal Mines Abandoned metal mines cause extensive pollution in Wales, with approximately 1,300 sites estimated to impact water quality and ecology in over 700 km of watercourses. Natural Resources Wales (NRW) and the Mining Remediation Authority (formerly Coal Authority) are working together to tackle this pollution, making our rivers cleaner and healthier to benefit people, wildlife and the economy. Causes... More
    Closes 19 October 2043

  • Llygredd dŵr mwyngloddiau metel

    Llygredd o Fwyngloddiau Metel Segur Mae mwyngloddiau metel segur yn achosi llawer o lygredd yng Nghymru. Mae tua 1,300 o safleoedd ar hyd a lled ein gwlad, ac amcangyfrifir eu bod nhw’n effeithio ar dros 700km o gyrsiau dŵr . Mae Cyfoeth Naturiol Cymru (CNC) a’r Awdurdod Adfer Safleoedd Mwyngloddio yn cydweithio i fynd i’r afael â ’r llygredd hwn, er mwyn gwella iechyd ein hafonydd, er budd pobl, bywyd gwyllt a’r economi. ... More
    Closes 19 October 2043

  • Dylife Lead & Zinc Mine

    Dylife Mine is located 13km northwest of Llanidloes, Powys, on the mountain road to Machynlleth. It has been identified as a major source of metals to the Afon Dyfi catchment and is responsible for the Afon Twymyn failing to achieve European Water Framework Directive standards for zinc, lead and cadmium. Dylife exploited lead and zinc from three mineral lodes: the Dylife, Esgairgaled and Llechwedd Ddu. The earliest workings are possibly of Roman date and may have been linked to the... More
    Closes 19 October 2043

  • Rhaglen Dalgylch Arddangos Teifi

    Prosiect ar y cyd yw Rhaglen Dalgylch Arddangos Teifi a sefydlwyd i fynd i’r afael â’r heriau sy’n wynebu Afon Teifi a’i dalgylch o ran ansawdd dŵr. Mae’r prosiect hwn yn dwyn ynghyd bartneriaeth o dros 20 o sefydliadau allweddol sydd â’r nod o ddod o hyd i atebion amgylcheddol arloesol. Byddwn yn ceisio gwella ansawdd dŵr, gwella gwydnwch yr afon yn wyneb newid hinsawdd a rhoi hwb i’w bioamrywiaeth drwy archwilio ffyrdd newydd o gydweithio. Drwy ddysgu... More
    Closes 1 November 2032

  • Teifi Demonstrator Programme

    The Teifi Demonstrator Project is a collaborative initiative set up to address the water quality challenges facing the River Teifi and its catchment. This project brings together a partnership of over 20 key organisations aiming to find innovative environmental solutions. We will look to improve water quality, enhance the river's resilience to climate change, and boost its biodiversity by exploring new ways of working together. By learning from the successes within the... More
    Closes 1 November 2032

  • Old Castle Down SSSI - Grazing to Help Wildlife

    Cliciwch yma i ddarllen y dudalen yn Gymraeg / Click here to read this page in Welsh Old Castle Down Old Castle Down is designated as a Site of Special Scientific Interest (SSSI) due to several distinct features including limestone grassland, limestone heath and humid heath. The variation in these plant communities reflects the changes in the calcium carbonate content of the soils. On the west side of the B4265 the calcareous grassland is dominated by sheep’s fescue grass... More
    Closes 22 September 2030

  • Gwaith Plwm a Sinc Abbey Consols

    Mae mwynglawdd Abbey Consols (sy’n cael ei adnabod hefyd fel Bronberllan, Florida neu Cwm Mawr Rhif 2) tua 1km i’r dwyrain o bentref Pontrhydfendigaid yng Ngheredigion. Mae’n edrych draw tua mynachlog Abbey Ystrad Fflur ar lan Afon Teifi gyferbyn. Mae’r mwynglawdd yn un o dri y gwyddom iddyn nhw gael effaith andwyol ar ansawdd dŵr Afon Teifi gan achosi i’r afon fethu â chyrraedd safonau dŵr o dan Gyfarwyddeb Fframwaith Dŵr Ewrop (WFD) ar gyfer sinc. Esgair Mwyn a... More
    Closes 28 February 2030

  • Abbey Consols Lead & Zinc Mine

    Abbey Consols Mine (also known as Bronberllan, Florida or Cwm Mawr No. 2) lies 1km east of the village of Pontrhydfendigaid, Ceredigion and overlooks Strata Florida Abbey on the opposite bank of the River Teifi. The mine is one of three known to have an impact on water quality in the River Teifi, causing it to fail European Water Framework Directive (WFD) standards for zinc. The other significant mines in the area are Esgair Mwyn and Cwm Mawr. Strata Florida Abbey was founded... More
    Closes 28 February 2030

  • Managing flood risk in Ynysybwl

    Read this page in Welsh / Darllenwch y dudalen hon yn Gymraeg UPDATE 23/06/25: publication of the Outline Business Case in the Project Updates section. Natural Resources Wales is working to reduce the risk of flooding in Ynysybwl. Ynysybwl was badly affected during Storm Dennis in 2020. Flood waters from the Nant Clydach overtopped the highway wall, which runs along the length of Clydach Terrace, flooding 17 properties. The Welsh Government has... More
    Closes 28 November 2029

  • Rheoli perygl llifogydd yn Ynysybwl

    Darllenwch y dudalen hon yn Saesneg / Read this page in English DIWEDDARIAD 23/06/25: cyhoeddiad yr Achos Busnes Amlinellol yn yr adran Diweddariadau Prosiect isod. Mae Cyfoeth Naturiol Cymru yn gweithio i leihau'r perygl o lifogydd yn Ynysybwl. Cafodd Ynysybwl ei heffeithio'n wael yn ystod Storm Dennis yn 2020 pan lifogwyd 17 eiddo ar Clydach Terrace wrth i lefel yr afon godi uwchben wal y briffordd. Mae Llywodraeth Cymru wedi ein cyfarwyddo i ymgymryd â... More
    Closes 28 November 2029

  • Upper Wye Catchment Restoration Project

    The Upper Wye Catchment Restoration Project is an NRW project funded by Welsh Government to restore the health of the upper reaches of the River Wye. The Wye is one of the UK’s most special rivers, which is reflected by its designation as a Site of Special Scientific Interest (SSSI) and a Special Area of Conservation (SAC). It is home to several important species including Atlantic salmon, otter, shad, white clawed crayfish and the plant, water crowfoot. ... More
    Closes 30 March 2029

  • Prosiect Adfer Dalgylch Gwy Uchaf

    Mae Prosiect Adfer Dalgylch Gwy Uchaf yn prosiect CNC, wedi’i ariannu gan Lywodraeth Cymru, i adfer cyflwr rhan uchaf afon Gwy. Mae afon Gwy yn un o afonydd mwyaf arbennig y DU, ac mae hynny wedi’i adlewyrchu yn y ffaith ei bod wedi’i dynodi’n Ardal Cadwraeth Arbennig (ACA) ac yn Safle o Ddiddordeb Gwyddonol Arbennig (SoDdGA). Mae’n gartref i nifer o rywogaethau pwysig, gan gynnwys eogiaid, dyfrgwn, gwangod a herlod, cimychiaid yr afon, yn ogystal â’r planhigyn... More
    Closes 30 March 2029

  • Reservoir Safety Reform

    Click here to view this page in Welsh . In Wales, there are around 400 registered reservoirs which are regulated under the Reservoirs Act 1975 - the law which sets the minimum safety standards. We have designated over half of these as “high-risk reservoirs” where we think a failure and any subsequent uncontrolled release of water could pose a risk to life. Reservoir safety is about ensuring the physical structure of a reservoir, its dams and embankments are safe. ... More
    Closes 31 March 2028

  • Diwygio diogelwch cronfeydd dŵr yng Nghymru

    Cliciwch yma i weld y dudalen yn Saesneg / Click here to view this page in English Yng Nghymru, mae tua 400 o gronfeydd dŵr cofrestredig sy’n cael eu rheoleiddio o dan Ddeddf Cronfeydd Dŵr 1975 - y gyfraith sy’n pennu’r safonau diogelwch gofynnol. Rydym wedi dynodi dros hanner y rhain yn “gronfeydd risg uchel”, lle credwn y gallai methiant ac unrhyw ollyngiadau dŵr heb reolaeth dilynol achosi perygl i fywyd. Mae diogelwch cronfeydd dŵr yn... More
    Closes 31 March 2028

  • Natur am Byth! Adfer Rhywogaethau dan fygythiad yng Nghymru

    I ddarllen y dudalen yn Saesneg/ Click for English Partneriaeth Natur am Byth yw rhaglen flaenllaw Cymru ar gyfer Adfer Rhywogaethau. Mae'n dod â naw o elusennau a sefydliadau amgylcheddol a Cyfoeth Naturiol Cymru (CNC) ynghyd i gyflwyno rhaglen treftadaeth naturiol ac allgymorth fwyaf y wlad i achub nifer o rywogaethau rhag diflannu ac i ailgysylltu pobl â natur. Dyma’r deg partner craidd: Cyfoeth Naturiol Cymru (arweinydd) ... More
    Closes 30 September 2027

  • Natur am Byth! Saving Wales' threatened species

    View this page in Welsh / Cymraeg The Natur am Byth partnership is Wales’ flagship Species Recovery programme. It unites nine environmental charities and organisations with Natural Resources Wales (NRW) to deliver the country’s largest natural heritage and outreach programme to save species from extinction and reconnect people to nature. The ten core partners are: Natural Resources Wales (lead) Amphibian and Reptile Conservation Bat... More
    Closes 30 September 2027

  • Natural Flood Management in the Cadoxton catchment

    Click to view this page in Welsh. We are exploring options to reduce the risk of flooding in Eastbrook and Dinas Powys. Periods of heavy rainfall over recent years have highlighted a flooding problem in Dinas Powys. In periods of high rainfall, the river channels, surface water drains and surface water sewers become overwhelmed causing flooding of roads, gardens and homes. One of our roles is to see what can be done to reduce the risks, especially in the... More
    Closes 5 June 2027
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