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Appendix 4: Current Monitoring Programmes

Table A4-A: Current (2009) monitoring programme

Catchment Water-quality variable Frequency of monitoring Flow Comment
Nutrients:
total nitrogen
total phosphorus
nitrate–nitrite nitrogen
soluble inorganic nitrogen (SIN)
dissolved reactive phosphorus 		Toxicants/stressors:
ammoniacal nitrogen
dissolved oxygen, pH
water temperature
suspended sediments
turbidity
visual clarity
conductivity 		Biological:
periphyton
macrophytes
macroinvertebrates
fish 		Microbiological:
E. coli
enterococci
Inchbonnie (T1) All + total organic carbon All   E. coli Monthly spot samples for all variables, as well as occasional seasonal deployments of continuous loggers for water temperature, pH and dissolved oxygen. Continuous recorders at catchment outlet  
Waiokura (T1) All + total organic carbon All Macroinvertebrates* E. coli Monthly spot samples for all variables, as well as occasional seasonal deployments of continuous loggers for water temperature, pH and dissolved oxygen.
Macroinvertebrates sampled twice a year at 2 sites in spring and summer.		 Continuous recorders at catchment outlet  
Rhodes (T2) All + dissolved organic carbon All Macroinvertebrates and periphyton E. coli Quarterly water quality monitoring at two sites. Macroinvertebrates annually. Spot gauging to maintain flow record  
Petrie (T2) All + dissolved organic carbon All Macroinvertebrates and periphyton E. coli Quarterly water quality monitoring at two sites. Macroinvertebrates annually. Spot gauging to maintain flow record  
Toenepi (T1) All + total organic carbon All   E. coli Monthly spot samples for all variables, as well as occasional seasonal deployments of continuous loggers for water temperature, pH and dissolved oxygen Continuous recorders at catchment outlet  
Puwera (T2) All except SIN All except clarity. Also do BOD5 Periphyton (Chlorophyll a) and macroinvertebrates E. coli and faecal coliforms Monthly spot samples for all variables and macroinvertebrates every two years Monthly spot gaugings at downstream site Upstream and downstream sites monitored
Washpool (T2) All except SIN Ammoniacal nitrogen and suspended sediments Fish E. coli Fortnightly spot sampling for all except fish (annual sampling). Continuous recorder at downstream site  
Waikakahi (T1) All + total organic carbon All Macroinvertebrates and periphyton E. coli Monthly spot samples for all variables, as well as occasional seasonal deployments of continuous loggers for water temperature, pH and dissolved oxygen. Continuous recorders at catchment outlet  
Powell (T2) All All Macroinvertebrates and periphyton E. coli Quarterly spot samples for all water quality variables, as well as occasional seasonal deployments of continuous loggers for water temperature and dissolved oxygen (eg, every
3–5 years). Twice-yearly periphyton and annual macroinvertebrates.		 Continuous  
Enaki (T2) All plus total kjeldahl nitrogen and total organic carbon All except visual clarity All E. coli Monthly spot samples for all water-quality variables, as well as occasional seasonal deployments of continuous loggers for water temperature.
Monthly periphyton cover and annual biomass. Macroinvertebrates annually and fish monitoring every 3 years.		 Flow is gauged monthly at time of sampling Site being monitored now (and in the future) is 500 m downstream from that for which baseline data in this report is presented.
Bog Burn (T1) All All Initiating in 2008 E. coli and faecal coliforms Monthly spot samples for all variables, as well as occasional seasonal deployments of continuous loggers for water temperature, pH and dissolved oxygen. Continuous recorders at catchment outlet  
Taharua (T2) All + bicarbonate, carbonate, hardness All + pH
Volatile suspended solids
Alkalinity		 Routine periphyton (tax and biomass) and macroinvertebrates and periodic fish and habitat quality survey E. coli Monthly spot samples for all water-quality variables, annual periphyton and habitat quality, and bi-annual macroinvertebrates.
5-yearly fish survey.
Continuous logger for water temperature; dissolved oxygen has been deployed since September 2008.		 Continuous recorders at catchment outlet Three sites routinely monitored plus recent addition of one just upstream of Mohaka confluence (Red Hut).
Mangapapa (T2) All plus dissolved organic phosphorus. Total oxidised nitrogen instead of nitrate–nitrite nitrogen All Periphyton, macroinvertebrates, fish routinely. Habitat quality on occasion E. coli Monthly spot samples / measurements for water quality and periphtyon. Fish surveyed 5-yearly. Continuous at downstream site (Troup Road)  
Rai (T2) All except SIN All except visual clarity Macroinvertebrates only. E. coli and faecal coliforms Monthly spot measurements for water quality with fortnightly monitoring during the summer. Annual macroinvertebrate sampling. Continuous  

Notes:

All sampling at Tier 1 sites undertaken by NIWA unless marked with an asterisk, in which case it is the regional council.

T1 = Tier 1 catchment and T2 = Tier 2 catchment.

 

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