Monitored sites in the Mohaka River catchment
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In December 2010 an agreement between the Government and Ngati Pahauwera was signed on the marae at Mohaka. It includes a package involving Mohaka River protection and reinforcement of a Water Conservation Order imposed by the Crown in 2004.
The headwaters of the catchment have a cool, wet climate and are in hill country with volcanic, acidic geology. Land-use is a mix of pastoral farming and forestry, both indigenous and exotic. The lower reaches have a warm, wet climate and land-use is predominately pastoral farming.
The river has good quality habitat for most of its length with regular riffles, pools and bends and a predominantly large cobble or cobble streambed. Riparian margins are well-protected in the upper reaches with few breaks or signs of erosion. The lower reaches have less riparian protection and patches of stream bank erosion.
The Mohaka supports many native fish species including longfin eel, shortfin eel, inanga, common smelt, koaro, koura, banded kokopu, patiki (black flounder), torrentfish, Cran’s bully, common bully blue gill bully, and redfin bully. It also has a world class rainbow and brown trout fishery that is considered regionally significant.
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This dashboard shows information on the data collected by the regional councils for water quality indicators, analysed as
The state for the catchment is represented by theconcentration for the across all sites within the catchment and then compares that value to the for all monitored sites in New Zealand.
Click on the parameters state icons to compare this catchment with others in the region.
State shows how theof samples from this site compares to other sites
Trend shows how the quality of water is changing over time. Depending on the sampling history duration, five and ten year timescales are available:
The Cawthron Institute has worked alongside regional councils to verify the processes and methods used for data collection, laboratory analysis of samples collected and the statistical analysis and interpretation of the results presented.
If all Cawthron ticks are green, then you can trust this data. However, if one or more ticks are orange, then conclusions should be treated with some caution.
For more details on each tick, see our 'Can I Trust This Data?' Factsheet.
All samples were collected using approved field protocols and have been analysed in accredited laboratories. Therefore the data shown here has been collected and analysed following best practice.
All samples were collected using approved field protocols and have been analysed in accredited laboratories.
This data is not flow adjusted. National guidelines suggest that flow-sensitive variables are flow 'adjusted' before trend analysis. Therefore, any trends shown here may be affected by variations in flow across sampling occasions.
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