Lough Derg (Donegal)

Year of compilation: 2000

Site description
Lough Derg is a large lake, situated approximately 6 km north of Pettigo in County Donegal. The lake is naturally nutrient-poor (oligotrophic). It is surrounded by extensive conifer plantations; good examples of wetland scrub occur on the lakeshore and islands.

Key biodiversity
The site was designated as a Special Protection Area on the basis of migratory waterfowl populations. An island within the lough is regularly used as a winter feeding site by small numbers of Anser albifrons flavirostris. The main flock uses site 027, immediately east of Lough Derg and separated by conifer plantations. There is also a nationally important breeding colony of Larus fuscus (800 birds, 1990).

Pressure/threats to key biodiversity
Felling of the surrounding conifer plantation may lead to pollution of the lake, which is already acidic.

Protected areas
National High International HighIBA overlaps with Wildfowl Sanctuary (Lough Derg (Donegal); area not known). 888 ha of IBA covered by Special Protection Area (Lough Derg (Donegal), 888 ha).

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Lough Derg (Donegal). Downloaded from on 14/07/2020.