A finger lake, also known as either 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." Where one end of a finger lake is drowned by the sea, it becomes a fjord or sea-loch.
- Lake Wakatipu, Otago, South Island.
- Many of the lakes of the Lake District are finger lakes.
- Many lochs of Scotland are finger lakes. Some like Loch Broom and Loch Maree form fjord and finger lake systems.
- Many of the Welsh llyns.
- Finger Lakes, New York State
- Hamblin, P.F. and Carmack, E.C., 1978. River‐induced currents in a Fjord Lake. Journal of Geophysical Research: Oceans, 83(C2), pp. 885–899.
- Kotlyakov, Vladimir and Anna Komarova, Elsevier's Dictionary of Geography: in English, Russian, French, Spanish and German. Amsterdam: Elsevier, 2007.ISBN 978-0-444-51042-6.
- Whittow, John (1984). Dictionary of Physical Geography. London: Penguin, 1984.ISBN 0-14-051094-X.