Llyn Dulyn

Infobox lake
lake_name = Llyn Dulyn
image_lake =
caption_lake =
image_bathymetry =
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location = Snowdonia, North Wales
coords = coord|53|10|49|N|3|56|45|W|type:waterbody_region:GB|display=inline,title
type = natural lake, reservoir
inflow =
outflow = Afon Dulyn
catchment =
basin_countries = United Kingdom
length =
width =
area = convert|33|acre|ha|abbr=on
depth =
max-depth = convert|189|ft|m|abbr=on
volume =
residence_time =
shore =
elevation =
islands =
cities =
frozen =

Llyn Dulyn "(Welsh : Black lake)" is a lake on the edge of the Carneddau range of mountains in Snowdonia, North Wales.

The lake covers an area of only 33 acres, yet is extremely deep - it reaches to a depth of 189'. Less than a kilometre to its south lies the smaller Llyn Melynllyn.

Cliffs rise steeply from the lake edge up to the summits of Garnedd Uchaf and Foel Grach, giving it a dark brooding appearance - hence its name. A number of superstitions are connected with the cwm, which has also been the site of a number of small aeroplane crashes. ["The Lakes of Eryri" by Geraint Roberts, Gwasg Carreg Gwalch, 1985]

The lake has a dam, originally built in 1881, to increase its water capacity, but it has been altered several times since. As a reservoir Dulyn (along with Melynllyn) provides water for the town of Llandudno. The pipes cross the River Conwy at Tal-y-Cafn bridge.

The outflow from the lake is called Afon Dulyn, and this stream also feeds water into neighbouring Llyn Eigiau. Afon Dulyn flows north-east, passing Tal-y-bont before joining the River Conwy.

References

*"The Lakes of North Wales" by Jonah Jones, Whittet Books Ltd, 1987
*"The Lakes of Eryri" by Geraint Roberts, Gwasg Carreg Gwalch, 1985