Linwood Canal, also known by the more prosaic name City Outfall Drain, begins at Olliviers Rd in Phillipstown, Christchurch. Dr Belinda Margetts, the council’s waterways ecologist and one of the report’s authors, says many of the city’s waterways are suffering from what ecologists call “urban stream syndrome”. JOHN KIRK-ANDERSON/Stuff Part of Linwood Canal flows through a steep-sided concrete channel a couple of metres below the level of the road. One of the more elusive species found in some Christchurch waterways is kēkēwai, the freshwater crayfish also known as kōura. Many of these features are absent from our urban waterways, so it’s no surprise kēkēwai are hard to find.

Source: Stuff September 03, 2021 16:52 UTC