Additionally, there is a fluvio-glacial deposit with a broad irrigated marsh and a scenic pine forest; and a wetland which is the remnant of a former stream.

Potentially hazardous activities in the area include a petrol station, an asphalt works, concrete industry, small scale industries, and a closed stock pile covering 9 hectares (22 acres) containing excavated material from the demolition of a major area in central Stockholm in the 1960s.

[3] During summers phytoplankton are dominated by cyanobacteria and occasionally diatoms, most commonly Aphanizomenon cf gracile but also Pseudanabaena limnetica, Planktolyngbya sp.

An inventory of aquatic plants in the lake in 1998 resulted in a list of some 30 species, including branched bur-reed and Nuttall's waterweed (the latter introduced in Europe during the 20th century and relatively new in Sweden.

Sample fishing in 1997 documented a dozen species, most notably roach and zander but also northern pike, perch, eel, trout, - of which some have been introduced into the lake - and many others.