Frøylandsvatnet is a

lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from ...

Rogaland Rogaland () is a Counties of Norway, county in Western Norway, bordering the North Sea to the west and the counties of Vestland to the north, Telemark to the east and Agder to the east and southeast. As of 1 January 2024, it had a population of 49 ...

county,

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...

. The lake is located in the district of

Jæren Jæren is a Districts of Norway, traditional district in Rogaland county, Norway. The other districts in Rogaland are Dalane, Ryfylke, and Haugalandet. Jæren is one of the 15 districts that comprise Western Norway. At about , Jæren is the large ...

. It forms part of the municipal boundary line between

Klepp Klepp is a List of municipalities of Norway, municipality in Rogaland county, Norway. It is located in the Traditional districts of Norway, traditional district of Jæren. The administrative centre of the municipality is the village of Kleppe. O ...

and

Time Time is the continuous progression of existence that occurs in an apparently irreversible process, irreversible succession from the past, through the present, and into the future. It is a component quantity of various measurements used to sequ ...

. The lake is quite shallow, with an average depth of . The town of

Bryne Bryne (, ) is a List of towns and cities in Norway, town in Time, Norway, Time municipality in Rogaland county, Norway. The town is the administrative centre of the municipality of Time and it is also List of urban areas in Norway by population ...

is located at the south end of the lake. The villages of Klepp stasjon,

Orstad The larger Kvernaland area is an amalgamation of villages in Rogaland county, Norway. The village is located along the north end of the lake Frøylandsvatnet. The village is located in both the municipalities of Klepp and Time (and a very small ...

, and

Kvernaland The larger Kvernaland area is an amalgamation of villages in Rogaland county, Norway. The village is located along the north end of the lake Frøylandsvatnet. The village is located in both the municipalities of Klepp and Time, Norway, Time (and ...

are all located around the northern end of the lake. The origin of the name is from the Norse god

Frey Freyr (Old Norse: 'Lord'), sometimes anglicized as Frey, is a widely attested god in Norse mythology, associated with kingship, fertility, peace, prosperity, fair weather, and good harvest. Freyr, sometimes referred to as Yngvi-Freyr, was especi ...

Environmental issues

The lake is located in an area with very intensive

agriculture Agriculture encompasses crop and livestock production, aquaculture, and forestry for food and non-food products. Agriculture was a key factor in the rise of sedentary human civilization, whereby farming of domesticated species created ...

. Early in the 1980s the lake was identified as being one of the worst cases of

eutrophication Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of organisms that may deplete the oxygen in the water; ie. the process of too many plants growing on the s ...

in Norway.

Algal bloom An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in fresh water or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. The term ''algae'' encompass ...

was a widespread problem, and there were cases reported of poisonous

algae Algae ( , ; : alga ) is an informal term for any organisms of a large and diverse group of photosynthesis, photosynthetic organisms that are not plants, and includes species from multiple distinct clades. Such organisms range from unicellular ...

causing cattle to die from drinking the water. The release of substances containing

nitrogen Nitrogen is a chemical element; it has Symbol (chemistry), symbol N and atomic number 7. Nitrogen is a Nonmetal (chemistry), nonmetal and the lightest member of pnictogen, group 15 of the periodic table, often called the Pnictogen, pnictogens. ...

and

phosphorus Phosphorus is a chemical element; it has Chemical symbol, symbol P and atomic number 15. All elemental forms of phosphorus are highly Reactivity (chemistry), reactive and are therefore never found in nature. They can nevertheless be prepared ar ...

has since been reduced, but large collections of

sediment Sediment is a solid material that is transported to a new location where it is deposited. It occurs naturally and, through the processes of weathering and erosion, is broken down and subsequently sediment transport, transported by the action of ...

in the shallow lake cause the problems to decline rather slowly.

References

Lakes of Rogaland Klepp Time, Norway {{Rogaland-geo-stub

Environmental issues

See also

References