81
Implementation of catchment scale based sustainable stormwater management measures such as the NummelaWetland Parks
requires
available space
at suitable locations in the landscape. In the increasingly urbanised Nummela, the majority of
the Kilsoi stream was already confined in underground culverts before the management shift was made. The shift required
collaboration within the municipality towards a common goal by environmental, planning, civil engineering and landscaping
leadership. Outside assistance was provided on theory and practice of new solutions by academic and regional level envi-
ronmental stakeholders. Public acceptance was assisted by the local water protection association.Voluntarily working towards
a management shift was necessary by all these project participants. The sites included in the scheme are all within the
same municipality, which allowed for the necessary changes to be made to zoning. If the stream or watershed had crossed
municipality borders, or a landowner had not been willing to sell their land for park purposes, the extent of land available
for implementation would have been less.
Nummela project shows that much more
education is needed,withmorepilot sites
, in order for sustainable stormwater
management to reach a status of ´common practice’.
I
mplementationchallenges
© O.Wahlroos, University Helsinki (Dpt. Forest Sciences)
Local people stated that being able to observe the species-rich and continuously changing natural environment was the best ecosystem service provided by the wetland.
Nummela ‘gateway’
wetlandpark
