Digital Derg: A Deep Map
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Watershed
Derry and the Valley of the Foyle
The Confluence of the Derg and Strule
"There is no grandeur in the surrounding scenery"
The source of the River Termon
The conservation status of the Lough Fad blanket bog to the south-west of Lough Derg
Waterlife, flora and fauna of the Lough Fad blanket bog to the south-west of Lough Derg
Location and characteristics of the Lough Fad blanket bog to the south-west of Lough Derg
Rivers of southern Templecarn
Lough Derg meets the sea
The River Derg
A description of Lough Derg and its topography
The northern shore of the lake