Blue green algae in water trough

Lake Skogseidvatnet lies at only about 13 metres above sea level. The deepest part is about metres deep.

Blue green algae in water trough pool

The Sævareid water system, of which Lake Skogseidvatnet is a part, is naturally poor in nutrients with a low concentration of organic matter, though over time it has had large quantities of nutrient salts added from the aquaculture and agriculture industries.

During the middle of the s, large amounts of toxic blue-green algae thrived in Lake Skogeidvatnet. There are still some blue-green algae today, but in much lower quantities, and the phosphate concentration has also been reduced.

Char as big as 8 kilogrammes have been caught in the lake.

This is among the biggest ever found in Norway. The high level of nutrients for fish, especially on the outside of the aquaculture cages, may explain why the char grow so big. It also is because the species of char here is a different, bigger type, that distinguishes itself genetically from the char we find elsewhere in No