wide. It is very shallow around the margins and the average depth in the main body of the lake is about 30 ft, although at its deepest the lough is about 80 ft deep.

Geology

Geologically the Lough Neagh Basin is a depression, built from many tectonic events dating back as far as 400 million years ago. These tectonic events are responsible for a NE-SW bedrock structure which has controlled many subsequent events. During the Paleozoic era, the Lough Neagh Basin was a depositional graben.

Hydrology

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