Þórisvatn
Encyclopedia
Þórisvatn, is the largest lake of 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...

, situated at the south end of Sprengisandur
Sprengisandur
Sprengisandur is a highland gravel road in Iceland, running between the glaciers Hofsjökull and Vatnajökull. The name also refers to the highland region surrounding the road....

 highland road within the highlands of Iceland
Highlands of Iceland
The Highlands of Iceland cover most of the interior of Iceland. They are situated above 400–500 metres and are mostly an uninhabitable volcanic desert, because the water precipitating as rain or snow infiltrates so quickly into the ground that it is unavailable for plant growth, which results...

.

It is a reservoir
Reservoir
A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 of a surface about 88 km² and uses the energy of the river Þjórsá
Þjórsá
Þjórsá is Iceland's longest river at 230 kilometers. It is in the southern region of the island.Þjórsá is a glacier river has its source on the glacier Hofsjökull. It flows out through narrow gorges in the highlands of Iceland. Further downstream, another river, the Tungnaá, flows into it , before...

, which comes down from the glacier
Glacier
A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...

 Hofsjökull
Hofsjökull
Hofsjökull is the third largest glacier in Iceland after Vatnajökull and Langjökull and the largest active volcano in the country. It situates at the west of the Highlands of Iceland and north of the mountain range Kerlingarfjöll, between the two largest glaciers of Iceland. It covers an area of...

. Here in the south, it is exploited in a power station. Like a lot of other Icelandic lakes, which are mostly glacial lakes or volcanic
Volcano
2. Bedrock3. Conduit 4. Base5. Sill6. Dike7. Layers of ash emitted by the volcano8. Flank| 9. Layers of lava emitted by the volcano10. Throat11. Parasitic cone12. Lava flow13. Vent14. Crater15...

lakes, it normally has a stark green color.

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