In connection with exploitation in new areas the storm water management is an essential matter to deal with to always avoid causing damage on the environment. Storm water is momentarily existing water masses that runs off hardened surfaces, examples of storm water is snow, rain and hail. Hardened surfaces are roofs, walls and other constructions. Storm water symbolizes that it is temporary existing, therefore does not lakes count as storm water because it is permanent.
In natural conditions rainwater penetrates green areas, but when it falls on hardened surfaces for example storm water cannot penetrate a car road, then it starts flowing along the road in a quicker pace then it normally would do in green areas.
The purpose of this study is partially to get an overall image of how storm water and storm water in zoning plans. And to compare survey storm water information from zoning plans in the three communes in Skåne county and to produce altitude maps for the chosen communes.
To get additional knowledge about storm water a lot of time has been been laid on literature studies. The study has chosen 20 random zoning plans from each municipality that has been taken directly from their map portal. To get a realistic answer as possible in the study zoning plans older than 1995 are excluded.
In the municipal of Malmö, it shows that 85 % of the zoning plans contains information about the management of storm water. Second is Lund where it contains information about storm water management in 55% of the zoning plans. Helsingborgs zoning plans only have 40 % of the zoning plans that contains information about storm water management.
To get a clearer image the author produced simplified altitude maps that shows how the altitude levels causes problems and where the development is mostly concentrated. After looking on Malmös altitude map it gets clear why they need to be in the leading edge of storm water management, their altitude levels are less than ideal.