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near Pont-rhyd-y-groes, Natural
Resources Wales has introduced a new technique for reducing the pollution. Water is drawn away from the mine in a leat to a wetland area, where biological processes involving the vegetation immobilise much of the pollutants. A similar approach is being used at Cwm
307:. The landscaped gardens were formed by blasting away parts of hills to create vistas. Roadways and bridges were built and hundreds of thousands of trees were planted. The result was a landscape that became famous and attracted many visitors including
214:. The length of the main river is 20.5 miles (33.0 km). Its catchment area covers 75 square miles (190 km). Its source is a number of streams that include the Afon Diliw, located on the west slopes of
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Rheidol mine, near
Aberystwyth. These remedies are considered important because the area supports a rich variety of wildlife, as well as bringing anglers and tourists to the area.
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The River still carries elevated levels of lead, zinc and silver in its water, mostly due to seepage from abandoned mine
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374:"First Water Resources Survey : Report", South West Wales River Authority, Published 1970, Page 41; Table 1
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289:. It is reputed that the average age at death of the miners in Cwm Ystwyth was 32, largely because of acute
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times, an activity that reached its peak in the 18th century. The largest of the very many mines was
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Jones, J.R. Erichsen (1958). "A Further Study of the Zinc-Polluted River
Ystwyth".
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386:"A survey of the macroinvertebrates of the Rivers Ystwyth and Rheidol"
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317:. The house was demolished in 1955, but the landscape remains today.
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On the left is
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293:. There is no active metal mining in the Ystwyth valley today.
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The
Ystwyth valley is sparsely populated with villages, namely
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499:"River Ystwyth pollution from Pontrhydygroes mine cut"
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408:: CS1 maint: multiple names: authors list (
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226:. The Ystwyth flows westwards before its
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1516:University of Wales Trinity Saint David
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154:The Ystwyth looking upstream from its
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281:have been mined in the valley since
429:. AA Publishing. 2015. p. 37.
354:. Oxford: Oxford University Press.
352:A Dictionary of British Place-Names
162:just before their combined estuary.
521:Afon Ystwyth: The Story of a River
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484:Keen, Richard & Burgum, Ian
218:on the border of Ceredigion and
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69:Physical characteristics
1710:Registered parks and gardens
1665:Parliamentary constituencies
524:, Artery Publications 2006.
98: • elevation
1159:(Llanfihangel Genau'r Glyn)
427:Concise Road Atlas: Britain
122: • location
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384:Brooker M.P.; Morris D.L.
102:500 m (1,600 ft)
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452:Journal of Animal Ecology
324:and discharges from mine
144:20.5 miles (33.0 km)
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501:. BBC News. 10 July 2013
1183:Llanfihangel y Creuddyn
309:Samuel Taylor Coleridge
299:was a mansion built by
1506:Aberystwyth University
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622:Principal settlements
549:at Wikimedia Commons
350:Mills, A. D. (2003).
153:
1788:Rivers of Ceredigion
570:52.33056°N 3.89639°W
518:Green, John (2006),
1685:Scheduled Monuments
1188:Llanfihangel Ystrad
804:Llanfihangel Ystrad
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81:Carnbwlchcloddiau,
35:River Ystwyth near
575:52.33056; -3.89639
224:Cambrian Mountains
183:[ˈəstʊɨ̯θ]
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1499:and colleges
1497:Universities
1478:Ystrad Aeron
1438:Troed y Rhiw
1428:Tre-Taliesin
1318:Penrhyn-coch
1213:Llangynfelyn
1042:Capel Bangor
934:Ystrad Fflur
894:Pontarfynach
834:Llangynfelyn
824:Llangwyryfon
749:Geneu'r Glyn
734:Dyffryn Arth
729:Ciliau Aeron
709:Blaenrheidol
704:Blaenborthyn
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503:. Retrieved
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392:. Retrieved
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244:Cardigan Bay
232:Afon Rheidol
178:Afon Ystwyth
169:
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127:Cardigan Bay
18:
1783:Aberystwyth
1608:Aberystwyth
1453:Upper Borth
1378:Rhydypennau
1348:Peny-y-garn
1333:Pentre-rhew
1323:Pentre-bach
1228:Llanrhystud
1203:Llangrannog
1198:Llangoedmor
1168:Llandygwydd
1163:Llandyfriog
1112:Ffynnon-oer
1097:Eglwys Fach
1057:Comins Coch
1032:Bwlchyfadfa
1007:Blaen Celyn
992:Alltyblacca
849:Llanrhystyd
819:Llangrannog
814:Llangoedmor
779:Llandyfriog
694:Aberystwyth
677:Communities
634:Aberystwyth
573: /
458:(1): 1–14.
255:Cwm Ystwyth
240:Aberystwyth
131:Aberystwyth
1777:Categories
1730:Public art
1443:Troedyraur
1433:Tre'r Ddôl
1408:Tal-y-bont
1393:Taigwynion
1328:Pentre-gat
1193:Llangeitho
1178:Llanfarian
1107:Ffostrasol
1087:Dôl-y-bont
1077:Cwrtnewydd
1072:Cwmystwyth
1047:Capel Dewi
1037:Caerwedros
1017:Bow Street
997:Betws Ifan
982:Abermeurig
919:Troedyraur
899:Tirymynach
879:Nantcwnlle
809:Llangeitho
799:Llanfarian
615:Ceredigion
558:52°19′50″N
337:References
314:Kubla Khan
267:Llanfarian
230:with the
228:confluence
208:Ceredigion
156:confluence
135:Ceredigion
63:Ceredigion
1750:Geography
1703:Grade II*
1488:Ystumtuen
1413:Trefeurig
1398:Talgarreg
1353:Ponterwyd
1308:Penparcau
1288:Pant-gwyn
1273:Newbridge
1243:Llanwnnen
1238:Llanwenog
1052:Cilcennin
987:Aberporth
977:Abermagwr
972:Aberlerry
967:Aberffrwd
948:Towns and
909:Trefeurig
904:Trawsgoed
864:Llanwnnen
859:Llanwenog
789:Llandysul
689:Aberporth
684:Aberaeron
649:Llandysul
629:Aberaeron
561:3°53′47″W
328:. At the
305:John Nash
216:Plynlimon
158:with the
37:Trawsgoed
1613:Cardigan
1603:Aberdyfi
1562:Llyfnant
1463:Y Ferwig
1458:Waunifor
1448:Tŷ-llwyd
1423:Tresaith
1418:Tregaron
1373:Rhydowen
1368:Pontsian
1343:Penybont
1263:Moelfryn
1258:Melindwr
1248:Llechryd
1218:Llanilar
1208:Llangybi
1142:Llanarth
1132:Gorsgoch
1127:Glasgoed
1122:Glandyfi
1027:Bryngwyn
1022:Broginin
962:Aberbanc
957:Aberarth
950:villages
914:Tregaron
884:New Quay
874:Melindwr
839:Llanilar
829:Llangybi
764:Llanarth
759:Lampeter
754:Henfynyw
744:Y Ferwig
719:Cardigan
659:Tregaron
654:New Quay
644:Lampeter
639:Cardigan
488:, p. 88.
404:cite web
322:tailings
263:Llanilar
234:and the
44:Location
1725:Museums
1698:Grade I
1675:Schools
1637:Islands
1623:Dinerth
1596:Castles
1587:Ystwyth
1572:Rheidol
1547:Clarach
1468:Ynyslas
1403:Talsarn
1338:Penuwch
1303:Penparc
1298:Pennant
1293:Penbryn
1283:Olmarch
1278:Oakford
1253:Lledrod
1157:Llandre
1117:Furnace
889:Penbryn
869:Lledrod
236:estuary
222:in the
202:) is a
191:
160:Rheidol
83:Elenydd
49:Country
1670:Places
1658:Topics
1567:Mynach
1542:Brenig
1525:Rivers
1388:Silian
1223:Llanon
1137:Gwbert
1102:Elerch
1067:Cwmann
1062:Cribyn
1002:Beulah
739:Faenor
699:Beulah
528:
470:
433:
358:
271:Silver
141:Length
116:
78:Source
59:Region
1762:Wales
1680:SSSIs
1577:Teifi
1552:Dulas
1532:Aeron
1383:Salem
1012:Borth
714:Borth
505:2 May
486:Wales
468:JSTOR
394:2 May
389:(PDF)
326:adits
283:Roman
220:Powys
212:Wales
204:river
174:Welsh
112:Mouth
91:Wales
87:Powys
53:Wales
1582:Wyre
1557:Leri
1537:Arth
1268:Mwnt
526:ISBN
507:2016
472:2169
431:ISBN
410:link
396:2016
356:ISBN
279:zinc
277:and
275:lead
265:and
188:lit.
168:The
460:doi
238:at
206:in
133:,
1779::
466:.
456:27
454:.
418:^
406:}}
402:{{
273:,
261:,
257:,
253:,
246:.
210:,
186:;
180:;
176::
129:,
89:,
85:,
607:e
600:t
593:v
509:.
474:.
462::
439:.
412:)
398:.
364:.
200:'
194:'
172:(
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