River Dysynni

River Dysynni (Afon Dysynni)
Dysynni estuary
Country	Wales


Source	Tal-y-llyn Lake
Mouth
- location	Irish Sea

The River Dysynni (Welsh: Afon Dysynni) is a river in mid Wales. Its source is the Tal-y-llyn Lake just south of the Cadair Idris massif and its mouth is in the Cardigan Bay area of the Irish Sea to the north of Tywyn.

Course

The River Dysynni flows from the western end of Tal-y-llyn Lake in a southwesterly direction to its confluence with the Nant Gwernol at Abergynolwyn. From here it flows in a northwesterly direction to its confluence with the Afon Cader, from where it resumes its southwesterly direction, meandering through a broad valley.^[1] It is joined here by its tributary, the Afon Fathew, which flows from near Dolgoch and joins it to the east of Tywyn near Bryncrug. The river enters Cardigan Bay through the Broad Water lagoon to the north of Tywyn near Tonfanau.^[2]

The river is interesting geologically because it exhibits river capture. This is likely to be as a result of river damming during a glacial period. The upper course of the river follows a fault line but at Abergynolwyn must have been blocked by a major landslide, the scar from which can still be seen on the side of the valley. The valley below here is blocked by debris on a rock base. The River Dysynni was thus forced to adopt a new course, and pushed its way through the hills northwestwards to find a new course in the parallel valley to the north.^[3]

Walking

The Dysynni Valley is popular with walkers. It is a scenic valley, with the Cadair Idris massif to the north and the huge rock face of Craig yr Aderyn to the south. The valley contains the ruins of Castell y Bere near Llanfihangel-y-Pennant. There are several walking routes, one being a path from Bryncrug alongside the Afon Fathew to the Broad Water.^[4]

Tributaries

Nant Gwernol
Afon Cader
Afon Fathew

References

↑ "Landranger 124 Dolgellau and surrounding area". 1.25 inch map. Ordnance Survey. Missing or empty |url= (help); |access-date= requires |url= (help)
↑ "Sheet 127 Aberystwyth". One inch map. Ordnance Survey. Missing or empty |url= (help); |access-date= requires |url= (help)
↑ Stephens, Nicholas (1990). Natural Landscapes of Britain from the Air. CUP Archive. pp. 64–65. ISBN 978-0-521-32390-1.
↑ "Afon Dysynni River in Wales". WalesDirectory.co.uk. Retrieved 26 April 2016.

External links

Wikimedia Commons has media related to Afon Dysynni.

Coordinates: 52°36′30.4″N 4°7′27.3″W / 52.608444°N 4.124250°W / 52.608444; -4.124250

Gwynedd

Principal settlements	Bala Bangor Barmouth Bethesda Blaenau Ffestiniog Caernarfon Criccieth Dolgellau Ffestiniog Harlech Nefyn Porthmadog Pwllheli Tywyn

Towns and villages	Aberangell Aberdaron Aberdesach Aberdyfi Abererch Abergeirw Abergwyngregyn Abergynolwyn Aberllefenni Abersoch Abertrinant Afon Wen Anelog Arthog Beddgelert Bethania Bethel Bethesda Betws Garmon Bodferin Boduan Bontddu Bontnewydd Botwnnog Bryncroes Bryn-crug Brynrefail Buan Bwlch-derwin Caeathro Capel Celyn Carmel Carnguwch Ceidio Chwilog Clwt-y-bont Clynnog Fawr Corris Uchaf Corris Croesor Cwm y Glo Deiniolen Dinas Dinas Dinlle Dinas Mawddwy Dinorwig Dolbenmaen Dolmelinllyn Dwygyfylchi Edern Efailnewydd Eisingrug Fairbourne Friog Frongoch Ganllwyd Garndolbenmaen Garneddwen Gellilydan Glasinfryn Groeslon Llan Ffestiniog Llanaber Llanaelhaearn Llanarmon Llanbedr Llanbedrog Llanberis Llandanwg Llandegwning Llandeiniolen Llandudwen Llandwrog Llandygai Llanegryn Llanelltyd Llanengan Llanfaelrhys Llanfaglan Llanfair Llanfihangel Bachellaeth Llanfihangel-y-Pennant Llanfihangel-y-Pennant, Dolbenmaen Llanfrothen Llangelynnin Llangian Llangwnnadl Llangybi Llaniestyn Llanigian Llanllechid Llanllyfni Llannor Llanrug Llanuwchllyn Llanwnda Llanymawddwy Llanystumdwy Llithfaen Llwyndyrys Llwyngwril Maentwrog Mallwyd Mellteyrn Minffordd Morfa Bychan Morfa Nefyn Mynydd Llandygai Mynydd Nefyn Mynytho Nantlle Valley Rhostryfan Nantmor Nasareth Nebo Pant Glas Penffridd Penisa'r Waun Penllech Penllyn Penmaenpool Pennal Penrhos Penrhyndeudraeth Pentre Gwynfryn Penygroes Pen-y-meinl Pistyll Pontrug Porthdinllaen Portmeirion Prenteg Rachub Rhiwddolion Rhosgadfan Rhoshirwaun Rhoslefair Rhos-y-gwaliau Rhyd Ddu Rhyd Rhyd-uchaf Rhydyclafdy Sarn Meyllteyrn Soar Talsarnau Tal-y-bont (near Bangor) Tal-y-bont (near Barmouth) Tal-y-llyn Talysarn Tanygrisiau Trawsfynydd Trefor Tregarth Tremadog Tudweiliog Tywyn Waunfawr Y Felinheli Y Ffor Y Fron Y Rhiw

Education	Bangor University Coleg Harlech Coleg Meirion-Dwyfor Coleg Menai Schools

Castles and forts	Caernarfon Castle Castell y Bere Criccieth Castle Dolbadarn Castle Harlech Castle Fort Belan

Rivers	Afon Aber River Adda Afon Artro Afon Cegin Afon Cwmnantcol Afon Daron Afon Dwyfor Afon Dwyryd Afon Dysynni Afon Fathew Afon Glaslyn Afon Llyfni Afon Mawddach Afon Ogwen Afon Rhythallt Afon Seiont Afon Tryweryn

Islands	Bardsey Island Ynys Gifftan Ynys Gwylan-fawr St Tudwals Islands

Topics	Parliamentary constituencies Places SSSIs Country houses Grade I listed buildings Grade II* listed buildings History Lord Lieutenants High Sheriffs Museums

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