[1] The area is a fine example of the fissure-valley landscape prevalent in the entire Stockholm County, featuring elevated flat rocks separated by valleys with oaks and spruces, some of which can be several hundreds years old.

[6] In summer, when the lake is stratified, bottom layers suffer of oxygen depletion causing release of phosphorus.

The ditch also receives stormwater from local settlements rich in nutrients and from the only road in the catchment area which contains metals and PAHs.

Larger zooplankton include water fleas (Bosmina) and copepods (Daphnia); and smaller species, rotifers, seem to have increased during the later part of the 1990s.

An inventory of aquatic plants in 1997 resulted in a list of 13 species, most commonly spring quillwort, awlwort, shoreweed, and needle spike-rush.

[6] A documentation of lake bed fauna in 1997 registered 68 species, of which fourteen were freshwater gastropods commonly found around Stockholm and five were dragonflies.