Public/Waitati_Minimum_Floor_Level_NZVD2016 (ImageServer)

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Service Description: The minimum crest level of the railway embankment is approximately 3.0m above mean sea level. Allowing for 300mm depth of flow over the embankment, plus 500mm freeboard results in a minimum floor level of 3.8m above mean sea level to protect against pondage from the embankment. This minimum floor level should be adopted, though it only protects the very low lying areas around Foyle Street and Killarney Street. Given the history of channel avulsion in the area, the higher part of the residentially zoned floodplain (around Harvey Street and Pitt Street) is more likely to be affected by concentrated flows that have overtopped the bank, rather than pondage. Minimum floor levels at least 500mm above the surrounding ground surface should be recommended in this area. - Minimum Floor Levels for Flood Vulnerable Areas, March 2015.

Name: Public/Waitati_Minimum_Floor_Level_NZVD2016

Description: The minimum crest level of the railway embankment is approximately 3.0m above mean sea level. Allowing for 300mm depth of flow over the embankment, plus 500mm freeboard results in a minimum floor level of 3.8m above mean sea level to protect against pondage from the embankment. This minimum floor level should be adopted, though it only protects the very low lying areas around Foyle Street and Killarney Street. Given the history of channel avulsion in the area, the higher part of the residentially zoned floodplain (around Harvey Street and Pitt Street) is more likely to be affected by concentrated flows that have overtopped the bank, rather than pondage. Minimum floor levels at least 500mm above the surrounding ground surface should be recommended in this area. - Minimum Floor Levels for Flood Vulnerable Areas, March 2015.

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Copyright Text: The data herein has been prepared by GHD for Dunedin City Council (DCC) as a supplement to the report Minimum Floor Levels for Flood Vulnerable Areas: Proposed Minimum Levels, prepared by GHD for Dunedin City Council, Nov 2014and is subject to the purpose and limitations outlined in that report. GHD therefore make no statement as to it being fit for any particular purpose beyond those enumerated in the report.

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