This site is on a muddy sandflat to the east of the rocky Te Tokaroa (Meola) Reef and is dissected by a small channel. Both Meola Creek and Motions Creek drain past the site, and it is one of the more sheltered sites in the main body of the Central Waitematā Harbour.
The site has been monitored since 2000, mud content is sampled every four months and macrofauna and heavy metal contaminants are sampled roughly every five years. The site has moderately high mud content and low contaminant concentrations and is in fair ecological health.
This dashboard shows information on the data collected by the regional councils and unitary authorities for the Estuary health scientific indicators, click the tiles for more information:
Mud content refers to the amount of fine silt and clay particles (collectively called ‘mud’) that are present in the estuary sandflats. This figure shows (mean) annual mud content measured at the monitoring site. The annual values are assessed against custom, national guidelines that indicate increasingly negative impacts on the macrofaunal community.
Ecology is not negatively impacted.
The diversity of the macrofauna community is slightly reduced.
The diversity of the macrofauna community is reduced and less resilient to disturbance.
The macrofauna community is unbalanced and dominated by a small number of tolerant species.
The macrofauna community is degraded.
View results alongside National guidelines:
View results alongside alternative guidelines:
This figure shows the (mean) annual contaminant concentration measured in the sediments of the monitored site. The annual values are assessed against the ANZG 2018 guidelines by default, and you can choose to view them assessed against several additional, more conservative guidelines. All of the guidelines show how likely it is that the contaminant is having negative ecological impacts. See the Contaminants factsheet for more information.
View results alongside National guidelines:
View results alongside alternative guidelines:
This figure shows the (mean) annual contaminant concentration measured in the sediments of the monitored site. The annual values are assessed against the ANZG 2018 guidelines by default, and you can choose to view them assessed against several additional, more conservative guidelines. All of the guidelines show how likely it is that the contaminant is having negative ecological impacts. See the Contaminants factsheet for more information.
View results alongside National guidelines:
View results alongside alternative guidelines:
This figure shows the (mean) annual contaminant concentration measured in the sediments of the monitored site. The annual values are assessed against the ANZG 2018 guidelines by default, and you can choose to view them assessed against several additional, more conservative guidelines. All of the guidelines show how likely it is that the contaminant is having negative ecological impacts. See the Contaminants factsheet for more information.
View results alongside National guidelines:
View results alongside alternative guidelines:
This figure shows the (mean) annual contaminant concentration measured in the sediments of the monitored site. The annual values are assessed against the ANZG 2018 guidelines by default, and you can choose to view them assessed against several additional, more conservative guidelines. All of the guidelines show how likely it is that the contaminant is having negative ecological impacts. See the Contaminants factsheet for more information.
View results alongside National guidelines:
View results alongside alternative guidelines:
This figure shows the (mean) annual contaminant concentration measured in the sediments of the monitored site. The annual values are assessed against the ANZG 2018 guidelines by default, and you can choose to view them assessed against several additional, more conservative guidelines. All of the guidelines show how likely it is that the contaminant is having negative ecological impacts. See the Contaminants factsheet for more information.