Halswell flood risk manageable
City council staff are satisfied that measures can be put in place to mitigate the flooding risk on land in Halswell that is set to become home to an innovative new subdivision.
Since details of the planned Meadowlands subdivision in Halswell were made public in earlier this week a number of Halswell residents have questioned the suitability of the land for housing.
Halswell resident Dick Schneider said he was very surprised to learn a housing subdivision was being planned on the land, off Hendersons Rd, as it was a well-known ponding area.
''I was absolutely amazed they could build a subdivision there - it's very boggy. I'm no expert but I wouldn't have thought it was suitable for housing,'' Schneider said. The water table was very high and when it rained there was often surface flooding.
A report prepared by Christchurch City Council officers on infrastructure matters pertinent to the proposed subdivision acknowledged there were ''known flooding and high groundwater constraints'' on the site but said they could be mitigated with careful engineering design.
It said the area envisaged for the subdivision had some of the highest land within the block and therefore would require less filling and groundwater management than other parts of the block.
Documentation provided by the developers to the council showed they planned to create ''blue corridors'', or open drainage systems through landscaped parks, within the subdivision.
Those corridors would contain small basin areas and ponds, which would connect into the large managed wetlands area of Hendersons Basin, just over the subdivision's eastern boundary.