A finger lake, also known as a fjord lake or trough lake, is "a narrow linear body of water occupying a glacially overdeepened valley and sometimes impounded by a morainic dam."^[1][2][3] Where one end of a finger lake is drowned by the sea, it becomes a fjord or sea-loch.

Examples

New Zealand

• Lake Wakatipu, Otago, South Island.

United Kingdom

England

• Many of the lakes of the Lake District are finger lakes.

Scotland

• Many lochs of Scotland are finger lakes. Some like Loch Broom and Loch Maree form fjord and finger lake systems.

Wales

• Many of the Welsh llyns.

United States

• Finger Lakes, New York State