The Regional Council is working with farmers and community groups to improve the health of our local rivers and lakes. We aim to reduce nutrient levels, such as nitrogen and phosphorus, in the Makaroro catchment. Specific targets for the catchment have been set in the Tukituki Catchment Plan (PC6).
We have developed dashboards for all the Tukituki sub catchments to help landowners find out about the ecosystem health of their sub-catchment, and identify whether they require a resource consent.
If you have any questions about resource consents, please contact one of our Consent Advisors – 06 833 8090, email: firstname.lastname@example.org
Latest Water Quality Information
The targets featured in this dashboard are the most relevant to the Makaroro catchment, and these are catchment scale targets, not national ones. See LAWA for national targets. In accordance with national guidance E. coli, DIN and DRP data are collected monthly, and macroinvertebrates are collected annually.
No Plan Target
These are determined using a 5 year rolling average of values. But red/green shaded areas on the graphs are used to put individual values/samples into context - if the majority of samples are in red then the site will fail to meet the plan target.
Aquatic macroinvertebrate communities are at the centre of aquatic food webs, and link the energy of the sun to fish and birds. They respond to a combination of water quality, habitat (including river flow), and climate.
We report upon macroinvertebrates by calculating the Macroinvertebrate Community Index (MCI). The MCI assigns a score to each species or taxon (1 to 10), based on its tolerance or sensitivity to organic pollution, and then calculates the average score of all taxa present at a site. Increases in MCI are generally considered to be good.
Macroinvertebrate communities of the Makaroro are considered 'good', but the site is just failing the plan target which aims for an 'excellent' MCI score of 120 or more.
An essential element for plant growth but elevated levels can lead to excessive plant and algal growth with associated problems. It is readily transformed between soluble and insoluble forms. The graph represents changes in Dissolved Inorganic Nitrogen (DIN) which is the form of nitrogen available for aquatic plant and algae growth. The Tukituki Catchment Plan has set a limit of 0.8 mg/L for the Makaroro Catchment.
The concentrations of DIN in the Makaroro are very low and are meeting the plan target of 0.15 mg/l.
We measure a particular form of phosphorous - Dissolved Reactive Phosphorous (DRP) because this is the only form available for aquatic plant and algae growth. Phosphorous is an essential element for plant growth but elevated levels can led to excessive plant or algal growth with associated problems. Over time, phosphate bound to sediment (soil particles in the water) dissolves and becomes DRP.
The concentrations of DRP are much lower in the Makaroro than elsewhere in the Tukituki catchment, but they are still failing to meet the plan target of 0.004 mg/l. Protecting wide buffers around riparian areas can help prevent phosphorus entering waterways.
Rolling median: 8.45mg/L - NB the calculated median is calculated from both FNU and NTU data, so should be treated with caution.
Increases in turbidity are associated with elevated sediment loading which is often caused by erosion. River flow has a strong influence on turbidity and other aspects of water quality. High flows are associated with increased sediment loading and associated contaminants. The relationship between turbidity and rainfall/river flow is a complex one. During heavy rain solids are washed into the stream but there is also more dilution. Compared to large powerful rivers like the Tukituki, the fine sediment and organic matter is more likely to settle on the bed of the Makaroro. Sedimentation reduces habitat quality, and limits the type of animals that can live in the waterways.
Turbidity is often moderately high in the Makaroro, and not only during high flows. The steeper gradients of upland rivers mean sediment stays suspended in the water column and increases turbidity, rather than settling onto the streambed. Reducing hill country erosion, and protecting and stabilising stream banks, should be a priority for landowners in this catchment.
Values displayed on this page are from automated calculations. They are intended as a guide only. Please seek confirmation from the regional council for verified values needed for consent or compliance purposes.
Disclaimers and Copyright
While every endeavour has been taken by the Hawke's Bay Regional Council to ensure that the information on this website is
accurate and up to date, Hawke's Bay Regional Council shall not be liable for any loss suffered through the use, directly or indirectly, of information on this website. Information contained has been assembled in good faith.
Some of the information available in this site is from the New Zealand Public domain and supplied by relevant
government agencies. Hawke's Bay Regional Council cannot accept any liability for its accuracy or content.
Portions of the information and material on this site, including data, pages, documents, online
graphics and images are protected by copyright, unless specifically notified to the contrary. Externally sourced
information or material is copyright to the respective provider.