Planning for flooding at Trees For Canterbury
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Abstract
● This research examines the flooding in the Outback areas of Trees For Canterbury. To identify effective mitigation options, it is important to understand the key causes of the flooding.
● The research question addressed within the study is finding the main contributing factors to the flooding in the Outback area of Trees For Canterbury and identifying potential strategies to manage the flooding.
● The methods carried out include a combination of qualitative and quantitative data collection. Specifically, fieldwork for collecting high-resolution imagery of this location, and interviewing Steve Bush, the community partner to obtain background information about the site.
● Open-source data was retrieved for Sea level data from NZ Sea Rise, groundwater measurements from ECAN, and precipitation data from StatsNZ and NIWA.
● The study identified three primary causes of flooding in the Outback area: an impermeable clay layer that blocks drainage, uneven topography that leads to water accumulation, and continuous irrigation and rainfall.
● A major limitation was the limited time available to examine all relevant variables.
● Long-term efforts should include more local research analysing the key factors contributing to flooding in the coastal areas of Christchurch.