FCG:n tekemän HULEVESITULVARISKIEN ALUSTAVA ARVOINTI HELSINGIN KAUPUNGISSA -raportissa (2011, päivitetty 2018) olleet geometriat purkupisteistä ja osavaluma-alueista. Läpäisemättömien pintojen pinta-ala sekä osuus...
The City of Helsinki's noise report, which complies with the EU's Environmental Noise Directive (END), examines the environmental noise caused by road and rail traffic in the Helsinki area. The noise report has been...
With the Nature Information System, you can get to know the diverse nature of Helsinki. The most important natural resources of the system are nature conservation sites, valuable flora and fauna sites, important bird...