Wairoa River study needs access points
NIWA researchers are seeking the help of landowners with a new study of the Wairoa River and its tributaries. The project aims to find out the sources of fine sediment in the beds and banks of the catchment’s waterways.
Fine sediments are a common pollutant generated by soil erosion, responsible for declining aquatic ecosystems and impairing recreational, cultural and aesthetic values in rivers, estuaries and coasts. NIWA has developed a scientific method of tracing the sources of fine sediments by land use, used to inform catchment management.
NIWA aquatic biogeochemist Ben Woodward says the Wairoa catchment is an ‘‘excellent natural laboratory’’ that has been substantially affected by fine sediments over the past century.
Work is starting to collect fine sediment samples at a large number of sites, and particularly at points where two waterways meet. With much of the Wairoa River running through private property, NIWA is asking for the assistance of landowners to access appropriate sites. Send an email to Ben Woodward at firstname.lastname@example.org or phone 07 856 1754.