Sediment filling up the harbour is the biggest threat to Porirua harbour. What is it? Where does it come from and how can we fix it?
How did Porirua habour form?
How does Porirua harbour differ from other estuaries?
What effect will climate change have on Porirua harbour?
What happens to Porirua harbour when it rains heavily?
How do we learn about the processes of sedimentation in Porirua harbour?
What are the different features of the Porirua harbour?
What natural processes protect Porirua harbour?
What chemical processes occur within sediment run-off?
How much sediment comes into the harbour from urban development?
January
Recreation
February
Fishing
March
Shags
April
Pollution
May
Tides
June
Urban Catchment
July
Pauatahanui Reserve
August
Sediment
September
Creatures Great & Small
October
The Rural Catchment
November
Industrial Catchment
December
The Future
Episode information
What are the options for dealing with sediment in the harbour?
Dr Mal Green of NIWA, who featured in the episode, gives more detail on what dredging would mean:
http://www.pcc.govt.nz/DownloadFile/Publications/Harbour-Management/Porirua-Harbour---Sediment-Problems---Causes-and-Solutions
What impact will Transmission gully have on sediment build up
in the Porirua Harbour?
The Guardians of Pauatahanui Inlet (GOPI) website has details of their and PICT’s submission to the resource consent process.
What are other communities around New Zealand doing in response to sedimentation in their area?
Maori Television screened the following programme showing the response of Ngati whatua o Orakei to silting of Okaihau Bay
Starting in 1995, the community of Raglan began its clean up of the Whaingaroa Raglan harbour.
