Much like lake Hornborga, lake Angarn was dried out to create farmland in the 1700-1800 hundreds. Not completely dried out it became a wetland.
During the 1960s and 70s it was in danger of becoming the next Stockholm suburb with subway etc. The Angarngruppen group was created to fight this, and eventually the Angarn lake nature reserver was created in the early 1980s.
The lake was restored in two steps during the 1980s and 1990s. Smaller restorations and maintenace is carried out periodically.
Today Angarn hosts ca 100 nesting species as well as ca 150 migrants and other temporary guests.
