The surrounding area was then used for agriculture until the 1950s, but the pumping-station remained in use until the Royal Djurgården Administration decided to develop the area in 1981 to attracts birds and plant life and closed to pump. Within a year sea birds had found the lake and more than 70 species have been spotted by the lake since, as a sign in the northern end of the lake knowns to tell.
The surrounding land was used for agriculture until the 1950s, but the water treatment facility continued to function until the Royal Djurgården Administration decided to convert the area into a nature reserve in 1981 to support local wildlife and plant life. The pumping station was eventually shut down.