Loch Watten is a loch in Caithness

Caithness

Caithness is a registration county, lieutenancy area and historic local government area of Scotland. The name was used also for the earldom of Caithness and the Caithness constituency of the Parliament of the United Kingdom . Boundaries are not identical in all contexts, but the Caithness area is...

, Scotland in the River Wick drainage basin. The name is a tautology

Tautology (rhetoric)

Tautology is an unnecessary or unessential repetition of meaning, using different and dissimilar words that effectively say the same thing...

, consisting of the word "loch

Loch

Loch is the Irish and Scottish Gaelic word for a lake or a sea inlet. It has been anglicised as lough, although this is pronounced the same way as loch. Some lochs could also be called a firth, fjord, estuary, strait or bay...

" (of Gaelic origin) and vatn, a Norse word meaning the very same, found in such names as "Þingvallavatn

Þingvallavatn

Þingvallavatn is a lake in south-western Iceland. With a surface of 84 km² it is the largest natural lake in Iceland. Its greatest depth is at 114 m. At the northern shore of the lake, at Þingvellir , the Alþingi, the national parliament, was founded in the year 930.The lake is part of the...

" and Myvatn

Mývatn

Mývatn is a shallow eutrophic lake situated in an area of active volcanism in the north of Iceland, not far from Krafla volcano. The lake and its surrounding wetlands have an exceptionally rich fauna of waterbirds, especially ducks...

 in Iceland

Iceland

Iceland , described as the Republic of Iceland, is a Nordic and European island country in the North Atlantic Ocean, on the Mid-Atlantic Ridge. Iceland also refers to the main island of the country, which contains almost all the population and almost all the land area. The country has a population...

, and "Røssvatnet

Røssvatnet

Røssvatnet is a lake and reservoir in the municipalities of Hattfjelldal and Hemnes in Nordland county, Norway. It has been the site of human occupation since the Stone Age. Its area of makes it the second largest lake in Norway by surface area. Without the dam which has regulated the lake...

" and "Møsvatn

Møsvatn

Møsvatn is twelfth largest lake in Norway with a surface area of 78.31 km². It lies primarily in Vinje municipality in Telemark county. The lake lies in the watershed of the Skien river and discharges into the Måna river. Along the shores of the lake, many traces of stone age settlers can be...

" in Norway

Norway

Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

.

It is well known as a good fly fishing loch for brown trout

Brown trout

The brown trout and the sea trout are fish of the same species....

 with the local village Watten

Watten, Highland

Watten is a small village in Caithness, in the Highland area of Scotland, on the main road between the county town of Wick and the burgh of Thurso, about twelve kilometres west of Wick and close to Wick River and to Loch Watten. The village is on The Far North railway line but trains stopped...

being located to the south