Whanganui Fisheries


CLIENT: Crown Forestry Rental Trust

DATE: 2008


Crown Forestry Rental Trust (CFRT) commissioned Bioresearches to assess the effect of various acts, omissions and other activities on freshwater fishes in the  inland waterways of the Whanganui Inquiry District.


This project involved:

 - the preparation of a targeted “issues based” Whanganui Waterways Report to assist parties to understand the impacts of certain Crown acts and/ or omissions and local government regimes on the waterways in the Whanganui Inquiry District, and in particular, the freshwater fishery.

 -an assessment of the effect of local government interventions, commercial operations and other activities on freshwater fishes in inland waterways of the Whanganui Inquiry District.

The principal aim of this assessment was to define the response of the fishery to activities (”natural” or “caused by humans”) throughout the Whanganui Inquiry District.


Scientific fisheries data were sourced from the New Zealand Freshwater Fish Database  (NZFFD), and additional historical and contemporary fisheries data was also searched. A survey was also undertaken immediately prior to commisioning  of the Tongariro Power Development (TPD) and access was obatined to numerous minor surveys and a recent assessment of freswater mussel (kakahi) populations in the Whanganui River.


Comparisons were made using the compiled fish data, particularly using fish records before and after significant developments affecting Whanganui waterways. Where deficiencies in the data were identified and time constraints permitted, additional surveys were undertaken of customary tuna (eels) fishing sites in the Ohura, lower Whanganui RIver, Mangawhero and Whangaehu catchments.


Hui were held with a number of the claimants and interested parties and the results of the assessment were presented as evidence to the Waitangi Tribunal.


We worked with:

Whanganui Inquiry District Iwi