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Case Kuninkoja-Stormwater investment and stormwater programme of Turku 11.11.11 Tallinn Olli-Pekka Mäki. Management of stormwaters. Background information Kuninkoja –brook: Drainage area 27 km 2 Length of the main channel 7 km Built area 30 % Fields 9 % Forest 40 %.
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Case Kuninkoja-Stormwater investment and stormwater programme of Turku 11.11.11 Tallinn Olli-Pekka Mäki
Background information Kuninkoja –brook: Drainage area 27 km2 Length of the main channel 7 km Built area 30 % Fields 9 % Forest 40 %
Locally valuable scenery element • Diverse habitat: bogs, meadows, groves (oak, ash) • 10 fish species have been observed • ~1 km of 7 km channel length is constructed area and water flows in pipes
Cluster of space demanding shops have been build in three years 2008-2010 ~ 440 000 m2 No measures taken to delay the stormwater runoff to Kuninkoja Flooding has increased Situates outside city border
Stormwater planning and investment • Target is to • prevent the disadvantages of flooding • increase the use of surface water elements in planning and construction of parks and greenery areas • decrease rapid water level variations in brook • maintain biodiversity • Environmental and City Planning Department responsible for planning • Real Estate Department resbonsible for constructing and maintaining • Budget of stormwater measure is ~ 61 000 € • Construction during 2012
Stormwaterplan • Floodreservoir of ~2000 m3 • Planting of wetlandplantspecies • Meandering of channel