This non-updatable view describes Christchurch River Environment Assessment Survey (CREAS) surveyed notable weed sites between 2016-2018.CREAS is a GIS-based strategic management tool for Christchurch waterways developed by ecological consultants, NIWA and EOS Ecology. The purpose of CREAS is to provide comprehensive natural asset management data of Christchurch’s waterways. CREAS will be implemented in several stages over a 5-year period.It is spatially abstracted to a point.Entity type: Concept.