Discolouration of the Wairoa River (1)
2 DEC 2025
By HAWKE'S BAY REGIONAL COUNCIL
Hawke’s Bay Regional Council is aware of an algal bloom causing discolouration in the lower Wairoa River and estuary. Laboratory analysis has confirmed the bloom is caused by Prymnesium sp. This species is not known to be toxic to humans, but for now we strongly recommend avoiding swimming and gathe...