Previous reports

Use the tabs below to see reports for previous monitoring years.

2021/22

Photo Link Report Parameters
Cummings et al. 2022 Cummings et al. 2022a Subtidal monitoring: Cummings V, Halliday J, Olsen G, Hale R, Greenfield B, Hailes S, Hewitt J. 2022. Te Whanganui-a-Tara (Wellington Harbour) Subtidal Monitoring – Results from the 2020 Survey. Report WRC20304 prepared for Greater Wellington Regional Council by NIWA, February 2022. 70p.
  • Mud content
  • Total Organic Carbon
  • Total Nitrogen
  • Metal contaminants
Cummings et al. 2022 Cummings et al. 2022b Subtidal sediment quality: Cummings. V, Halliday. J, Olsen. G, Hale. R, Greenfield. B, Hailes. S, Hewitt. J, 2022. Te Awarua-o-Porirua Harbour subtidal sediment quality monitoring Results from the 2020 survey. Prepared for Greater Wellington Regional Council February 2022
  • Contaminants
  • Sediment PSA
Forrest, Stevens & Roberts 2022 Forrest, Stevens & Roberts 2022 Fine scale: Forrest BM, Stevens LM, Roberts KL. 2022. Fine Scale Intertidal Monitoring of Te Awarua-o-Porirua Harbour. Salt Ecology Report 094, prepared for Greater Wellington Regional Council, February 2023. 42p
  • Sediment analysis
  • Contaminants
  • Macrofauna
Greater Wellington 2022 Greater Wellington 2022a Sediment: Greater Wellington Regional Council. 2021/22 Te Awarua-o-Porirua Harbour catchment sediment monitoring
  • Sediment load/yield
Greater Wellington 2022 Greater Wellington 2022b Report: Greater Wellington Regional Council (GWRC). 2022. Te Awarua-o-Porirua Harbour monitoring – Web report.
  • Combined results
Greater Wellington 2022 Greater Wellington 2022c Recreational water quality: Greater Wellington Regional Council (GWRC). 2022. Recreational water quality annual report 2021/22. Greater Wellington Region Council.
  • Faecal indicator bacteria
  • Potentially toxic algae
  • Faecal coliforms
Stevens 2022 Stevens 2022a Sediment plate: Stevens. L, 2022. Salt Ecology Short Report 015. Waikanae Estuary: 2021/2022 Intertidal Sediment Monitoring Summary. Prepared by Leigh Stevens for Greater Wellington Regional Council, April 2022.
  • Sedimentation rate
  • Sediment mud content/oxygenation
  • Sediment depth
Stevens 2022 Stevens 2022b Sediment plate: Stevens. L, 2022. Salt Ecology Short Report 014. Hutt Estuary: 2021/2022 Intertidal Sediment Monitoring. Prepared by Leigh Stevens for Greater Wellington Regional Council, June 2022.
  • Sedimentation rate
  • Sediment mud content/oxygenation
  • Sediment depth
Stevens et al. 2022 Stevens et al. 2022 Sediment plate: Stevens LM, Rabel H, Forrest, BM. 2022. Te Awarua-o-Porirua Harbour Sediment Plate Monitoring 2021/2022. Report 090 prepared for Greater Wellington Regional Council by Salt Ecology, July 2022. 23p.
  • Sedimentation rate
  • Particle Size Analysis (PSA)

2020/21

Photo Link Report Parameters
Bullock & Mulling 2021 Bullock & Mulling 2021a Catchment, riparian management: Bullock C, Mulling B. (2021). Porirua City Council Riparian Management Strategy. Porirua Stream catchment. Prepared for Porirua City Council February 2021
  • Catchment description
  • Land use of catchment
  • Riparian planting
Bullock & Mulling 2021 Bullock & Mulling 2021b Catchment, riparian management: Bullock C, Mulling B. (2021). Porirua City Council Riparian Management Strategy. Pāuatahanui Stream catchment. Prepared for Porirua City Council April 2021
  • Catchment description
  • Land use of catchment
  • Riparian planting
Greater Wellington 2021 Greater Wellington 2021 Catchment sediment annual report: Greater Wellington Regional Council (GWRC). 2021. Te Awarua-o-Porirua catchment sediment annual report 2020/21. Greater Wellington Region Council.
  • Sediment load/yield
Roberts 2021 Roberts 2021a Sediment plate: Roberts KL. 2021. Hutt Estuary: 2020/21 Intertidal Sediment Monitoring Summary. Salt Ecology Report 001, prepared for Greater Wellington Regional Council, February 2021. 2p.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Roberts 2021 Roberts 2021b Sediment plate: Roberts. K, 2021. Waikanae Estuary: 2020/2021 Intertidal Sediment Monitoring. Salt Ecology Short Report 002. Prepared by Keryn Roberts for Greater Wellington Regional Council, February 2021.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Roberts et al. 2021 Roberts et al. 2021 Sediment plate: Roberts KL, Rabel H, Stevens LM. 2021. Te Awarua-o-Porirua Harbour Sediment Plate Monitoring 2020/2021. Report 061 prepared for Greater Wellington Regional Council by Salt Ecology, March 2021. 24p.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Stevens & Southwick 2021 Stevens & Southwick 2021 Sea level rise mapping: Stevens LM, Southwick M. 2021. Evaluation of a simple GIS-based methodology to determine estuary extent and assess potential changes in response to sea level rise. Salt Ecology Report 057, prepared for Greater Wellington Regional Council, January 2021. 11p.
  • Sea level rise

2019/20

Photo Link Report Parameters
Forrest, Stevens & Rabel 2020 Forrest, Stevens & Rabel 2020 Fine scale: Forrest BM, Stevens LM, Rabel H. 2020. Fine Scale Intertidal Monitoring of Te Awarua-o-Porirua Harbour – 2020 Survey. Report 044 prepared for Greater Wellington Regional Council by Salt Ecology, August 2020. 33p.
  • Sediment analysis
  • Contaminants
  • Macrofauna
MfE 2020 MfE 2020 Climate change: Ministry for the Environment. 2020. National Climate Change Risk Assessment for Aotearoa New Zealand: Main report – Arotakenga Turaru mo te Huringa Ahuarangi o Aotearoa: Purongo whakatopu. Wellington: Ministry for the Environment.
  • Coastal ecosystem risks
Michael & Lyon 2020 Michael & Lyon 2020 GOPI cockle monitoring: Michael K & Lyon W. 2020. Community survey of cockles (Austrovenus stutchburyi) in the intertidal zone of Pāuatahanui Inlet, Wellington, November 2019. Report VSJ20301 prepared for Guardians of the Pāuatahanui Inlet (GOPI) by NIWA, June 2020. 60p.
  • Cockle density
  • Cockle size structure
Olsen et al 2021 Olsen et al 2021 Subtidal sediment quality: Olsen. G, Cummings. V, Halliday. J, Ovenden, R. Rendle. D, Petersen. G. 2021. Te Awarua-o-Porirua Harbour subtidal sediment quality monitoring 2020 Sediment chemistry, particle size and QA/QC data report. Prepared for Greater Wellington Regional Council by NIWA. April 2021.
  • Contaminants
  • Sediment PSA
Stevens & Forrest 2020 Stevens & Forrest 2020a Habitat mapping: Stevens LM, Forrest BM. 2020. Broad Scale Intertidal Habitat Mapping of Te Awarua-o-Porirua Harbour – 2020 Survey. Report 050 prepared for Greater Wellington Regional Council by Salt Ecology, October 2020. 46p.
  • Substrates
  • Salt marsh
  • Seagrass
  • Macroalgae
Stevens & Forrest 2020 Stevens & Forrest 2020b Sediment plate: Stevens LM, Forrest BM 2020. Te Awarua-o-Porirua Harbour Sediment Plate Monitoring 2019/2020. Report 038 prepared for Greater Wellington Regional Council by Salt Ecology, May 2020. 20p.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Stevens 2020 Stevens 2020a Sediment plate: Stevens, L.M. 2020. Hutt Estuary: 2019/2020 Intertidal Sediment Monitoring Summary. Salt Ecology Report 056, prepared for Greater Wellington Regional Council, November 2020.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Stevens 2020 Stevens 2020b Sediment plate: Stevens, L.M. 2020. Waikanae estuary: 2019/2020 Intertidal Sediment Monitoring Summary Salt Ecology Report 036. Prepared for Greater Wellington Regional Council by Leigh Stevens, April 2020.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth

2018/19

Photo Link Report Parameters
DHI 2019 DHI 2019 Modelling: DHI,2019. Porirua Whaitua Collaborative Modelling Project. Prepared for Greater Wellington Council, June 2019.
  • Hydro
  • Sediments (budget
  • deposition rates
  • texture)
  • Nutrients
  • Pathogens
  • Metals
Forrest & Stevens 2019 Forrest & Stevens 2019a Broad scale: Forrest BM, Stevens LM 2019. Kāpiti and Mana Island rocky shore survey. Salt Ecology Report 020, prepared for Greater Wellington Regional Council, July 2019. 40p
  • Species richness
  • Composition/abundance
Forrest & Stevens 2019 Forrest & Stevens 2019b Fine scale: Forrest BM, Stevens LM. 2019. Fine scale monitoring of Paraparaumu and Waikanae Beaches, Kāpiti Coast, Wellington. Salt Ecology Report 013, prepared for Greater Wellington Regional Council, May 2019. 29p.
  • Morphometry
  • Sediment grain size
  • Sediment oxygenation
  • Contaminants
  • Infaunal community
Hewitt 2019 Hewitt 2019 Subtidal: Hewitt 2019. Wellington Harbour subtidal sediment quality monitoring: Results from the November 2016 survey. Prepared by NIWA for Greater Wellington Regional Council. 42p.
  • Benthic ecology
  • Sediment PSA
  • Chemical properties
Michael & Lyon 2019 Michael & Lyon 2019 Cockle survey: Michael K & Lyon W. Community survey of cockles (Austrovenus stutchburyi) in the intertidal zone of Pāuatahanui Inlet, Wellington, November 2019. NIWA Report 2020149WN, prepared for GOPI, May 2020. 60p.
  • Cockle density
  • Cockle size structure
Morar & Alberto 2019 Morar & Alberto 2019 Turbidity: Morar. S, Alberto. A, 2019. Te Awarua-o-Porirua Harbour catchment sediment monitoring programme Results of continuous turbidity and sediment monitoring, 2016/17 & 2017/18. Published by Greater Wellington Regional Council, May 2019.
  • Sediment load/yield
Salt Ecology 2019 Salt Ecology 2019 Sediment plate: Salt Ecology. 2019. Te-Awarua-O-Porirua Harbour 2019 Sediment Monitoring. Prepared for Greater Wellington Regional Council by Salt Ecology.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Stevens & Forrest 2019 Stevens & Forrest 2019 Broad scale: Stevens LM, Forrest BM 2019. Kāpiti Whaitua. Review of estuary ecological condition and habitat vulnerability. Salt Ecology Report 028 prepared for Greater Wellington Regional Council. 60p.
  • Estuary water quality
  • Macroalgae assessment
  • Sediment oxygenation
  • Seagrass assessment
  • Salt Marsh assessment
Stevens 2019 Stevens 2019a Sediment plate: Stevens, L.M. 2019. Hutt Estuary Intertidal Sediment Monitoring, Salt Ecology Report 032. Prepared for Greater Wellington Council by Leigh Stevens, December 2019.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Stevens 2019 Stevens 2019b Sediment plate: Stevens, LM. 2019. Waikanae estuary: 2018/2019 Intertidal Sediment Monitoring Summary Salt Ecology Report 029. Prepared for Greater Wellington Regional Council by Leigh Stevens, November 2019.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Te Awarua-o-Porirua Whaitua Committee 2019 Te Awarua-o-Porirua Whaitua Committee 2019 Report: Te Awarua-o-Porirua Whaitua Committee. 2019. Te Awarua-o-Porirua Whaitua Implementation Programme. Report GW/CUE-G-19/20. 111p.
  • N/A
Waller & Stubbing 2019 Waller & Stubbing 2019 Bathymetry: Waller B & Stubbing D. 2019. Porirua Harbour Bathymetric Survey, May 2019. Report 1902 prepared for Greater Wellington Regional Council by Discovery Marine Limited (DML). 26p.
  • Bathymetry
  • Bathymetry change

2017/18

Photo Link Report Parameters
Morphum 2018 Morphum 2018 Modelling: Morphum Environmental. 2018. Te Awarua-o-Porirua Collaborative Modelling Project – Urban Hydrology Modelling. Prepared for Greater Wellington Regional Council by Morphum Environmental Ltd November 2018.
  • Hydrology modelling
Oliver & Conwell 2017/18 Oliver & Conwell 2017/18 Report: Oliver MD, Conwell C. 2018. Coastal Water Quality and Ecology Monitoring programme: Annual data report 2017/18. Greater Wellington Regional Council, Publication No. GW/ESCI-T-18/144, Wellington
  • Sedimentation
Stevens 2018 Stevens 2018a Macroalgal: Stevens, L.M. 2018. Hutt Estuary Intertidal Macroalgal Monitoring, January 2018. Salt Ecology Report 009. Prepared for Greater Wellington Council, May 2018. 13p.
  • Macroalgal entrainment
  • Biomass
  • Percentage cover
Stevens 2018 Stevens 2018b Sediment plate: Stevens, L.M. 2018. Te Awarua-o-Porirua Harbour Sediment Plate Monitoring 2017/2018. Salt Ecology Report 002 prepared for Greater Wellington Regional Council. 21p.
  • Sediment depth
  • Particle Size Analysis
  • Sediment mud content
Stevens 2018 Stevens 2018c Sediment plate: Stevens, L.M. 2018. Waikanae estuary: 2017/2018 Intertidal Sediment Monitoring Summary Salt Ecology Report 003. Prepared for Greater Wellington Regional Council by Leigh Stevens, April 2018.
  • Sedimentation rate
  • Sediment mud content
  • Sediment depth
Stevens 2018 Stevens 2018d Broad scale: Stevens, L.M. 2018. Rocky Shore Monitoring of Scorching Bay, Makara, and Baring Head, Wellington. Salt Ecology Report 008. Prepared for Greater Wellington Council, June 2018. 26p.
  • SACFOR assessment
  • Infaunal community
Stevens 2018 Stevens 2018e Fine scale: Stevens, L.M. 2018. Fine Scale Monitoring of Petone Beach, Lyall Bay and Owhiro Bay, Wellington. Salt Ecology Report 007. Prepared for Greater Wellington Council, May 2018. 33p.
  • Morphometry
  • Sediment grain size
  • Sediment oxygenation
  • Contaminants
  • Infaunal community
Stevens 2018 Stevens 2018f Habitat vulnerability and ecological condition: Stevens, L.M. 2018. Whaitua Te Whanganui-a-Tara. Coastal habitat vulnerability and ecological condition. Salt Ecology Report 004 prepared for Greater Wellington Regional Council. 43p
  • Water quality data
  • Synoptic survey

Pre 2018

Link Report Parameters
NIWA 2017 Modelling: NIWA. 2017. Te Awarua-o-Porirua (TAoP) Collaborative Modelling Project: CLUES modelling of rural contaminants. Prepared for Greater Wellington Regional Council June 2017
  • Contaminants
Oliver & Conwell 2016/17 Report: Oliver MD, Conwell C. 2017. Coastal Water Quality and Ecology Monitoring programme: Annual data report 2016/17. Greater Wellington Regional Council, Publication No. GW/ESCI-T-17/97, Wellington
  • Sedimentation
  • Water quality
  • Habitat mapping
Morar & Oliver 2016 Turbidity monitoring: Morar S, Oliver M. 2016. Te Awarua-o-Porirua Harbour catchment turbidity monitoring Results of continuous turbidity monitoring 2014/15. Published by Greater Wellington, April, 2016.
  • Sediment load/yield
Oliver 2015/16 Subtidal, fine scale: Oliver MD. 2016. Coastal Water Quality and Ecology Monitoring programme: Annual data report 2015/16. Greater Wellington Regional Council, Publication No. GW/ESCI-T-16/83, Wellington.
  • Sedimentation
  • Water quality
  • Habitat mapping
Olsen et al 2016a Bulk reference subtidal sediments: Olsen. G, Ovenden. R, Albert. A, Rendle. D, 2016. Porirua Harbour Bulk Reference Subtidal Sediments: Sediment Chemistry and Particle Size Analytical Results and QA/QC. Prepared for Greater Wellington Regional Council Greater Wellington Regional Council. February 2016
  • Contaminants
  • PSA
Olsen et al 2016b Subtidal survey: Olsen. G, Ovenden. R, Albert. A, Rendle. D, 2016. Porirua Harbour Subtidal Survey 2015: Sediment Chemistry and Particle Size Analytical Results and QA/QC. Prepared for Greater Wellington Regional Council February 2016
  • Contaminants
  • PSA
Stephenson. G 2016 Subtidal marine sediment quality: Stephenson. G, 2016. Te Awarua-o-Porirua Harbour subtidal marine sediment quality monitoring programme: Identification of benthos from the 2015 survey. Coastal Marine Ecology Consultants. Prepared for Greater Wellington Regional Council
  • Fauna Composition
  • Benthic ecology
DML 2015 Broad scale: DML. 2015. Te Awarua-o-Porirua Harbour Report of Survey & Verification of Sedimentation Rates – November 2014. Report SP00041 prepared for Report Prepared for Porirua City Council by Discovery Marine Limited (DML). 17p.
  • Bathymetry
  • Sedimentation rates
Matheson & Wadhwa 2012 Report: Matheson F, Wadhwa S. 2012. Seagrass in Porirua Harbour – Preliminary Assessment of Restoration Potential. Report WRC12206 prepared for Greater Wellington Regional Council by NIWA, July 2012. 35p.
  • Seagrass
Morar, Oliver & Purdon 2015 Turbidity monitoring: Morar. S, Oliver. M, Purdon. W, 2015. Te Awarua-o-Porirua Harbour catchment turbidity monitoring Results of continuous turbidity monitoring 2012–2014. Published by GWRC March 2015.
  • Sediment yield/load
Oliver 2015 Broad scale: Oliver MD. 2015. Coastal state of the environment monitoring programme: Annual data report 2014/15. Greater Wellington Regional Council, Publication No. GW/ESCI-T-15/148, Wellington.
  • Water quality
  • Sedimentation
  • Habitat mapping
Robertson & Stevens 2015 Fine scale: Robertson B & Stevens L. 2015. Porirua Harbour Fine Scale Monitoring 2014/15. Prepared for Wellington Regional Council and Porirua City Council June 2015
  • Sedimentation
  • Water quality
Stevens & Robertson 2015 Intertidal: Stevens L & Robertson B . 2015. Porirua Harbour: Intertidal macroalgal monitoring 2014/15. Prepared for Wellington Regional Council March 2015
  • Macroalgae
Green et al 2014 Modelling: Green M, Stevens L and Oliver MD. 2014. Te Awarua-o-Porirua Harbour and catchment sediment modelling: Development and application of the CLUES and Source-to-Sink models. Greater Wellington Regional Council, Publication No. GW/ESCI-T-14/132, Wellington
  • CLUES model development
  • Source-to-sink model
  • Sed budget
  • Sed loads
Oliver & Conwell 2014 Subtidal sediment survey: Oliver M, Conwell C. 2014. Te Awarua-o-Porirua Harbour subtidal sediment survey: Results from the 2010 survey. Greater Wellington Regional Council Report GW/ESCI-T-14/110. 125p.
  • Macroinvertebrates
  • Sediment PSA
  • Sediment chemistry
Oliver 2014 Subtidal, fine scale: Oliver MD. 2014. Coastal state of the environment monitoring programme: Annual data report 2013/14. Greater, Wellington Regional Council, Publication No. GW/ESCI-T-14/122, Wellington
  • Sedimentation
  • Water quality
  • Habitat mapping
Milne & Oliver 2012/13 Broad scale: Milne J and Oliver M. 2013. Coastal State of the Environment monitoring programme, Annual data report, 2012/13. Greater Wellington Regional Council, Publication No. GW/ESCI-T-13/118, Wellington.
  • Water quality
  • Sedimentation
  • Habitat mapping
Oliver 2013 Subtidal sediment quality: Oliver M. 2013. Wellington Harbour subtidal sediment quality monitoring Results from the 2011 survey. Report number GW/ESCI-T-14/2 published by Greater Wellington Regional Council. 254 p. 
  • PSA
  • Contaminants
  • Species composition
Oliver & Milne 2012 Subtidal, fine scale: Oliver, MD and Milne, JR. 2012. Coastal water quality and ecology in the Wellington region: State and trends. Greater Wellington Regional Council, Publication No. GW/EMI-T-12/144, Wellington
  • Sedimentation
  • Water quality
  • Habitat mapping
Oliver 2013 Intertidal: Oliver MD. 2013. Annual coastal monitoring report for the Wellington region, 2011/12. Greater Wellington Regional Council, Publication No. GW/ESCI-G-13/31, Wellington.
  • Ecological monitoring
  • Water quality
Gibb 2011 Sedimentation: Gibb J. 2011. Sedimentation zones and rates within Pāuatahanui Inlet and the Onepoto arm of Porirua Harbour. Consultancy report prepared for Greater Wellington Regional Council May 2011
  • Sedimentation
Oliver 2010/11 Intertidal, subtidal: Oliver MD. 2012. Annual coastal monitoring report for the Wellington region, 2010/11. Greater Wellington Regional Council, Publication No. GW/EMI-G-12/150, Wellington.
  • Ecological monitoring
  • Sediment quality
  • Benthic fauna
Milne 2009/10 Intertidal: Milne, J. 2010. Annual coastal monitoring report for the Wellington region, 2009/10. Greater Wellington Regional Council, Publication No. GW/EMI-G-10/164, Wellington.
  • Ecological monitoring
DML 2009 Bathymetry: DML. 2009. Porirua Harbour Bathymetric Survey Report – April 2009. Report DML-1000-WLG prepared for Porirua City Council by Discovery Marine Limited (DML). 32p
  • Bathymetry
Milne 2008/9 Subtidal, intertidal: Milne, J.R., 2008. Annual coastal monitoring report for the Wellington region, 2008/09.
  • Ecological monitoring
  • Sediments PSA
  • Contamination
Ovenden 2009 Sediment analysis: Ovenden. R, 2009. Particle Size Data for Marine Sediments in Porirua Harbour. Prepared for Coastal Marine Ecology Consultants by NIWA.
  • PSA
Sorensen et al. 2009 Subtidal sediment quality: Sorenson PG, Milne JR, Kelly. S, 2009. Porirua Harbour subtidal sediment quality monitoring. Results from the November 2008 survey. Prepared by Greater Wellington Regional Council.
  • Sediment PSA
  • Species composition
  • Contaminants
Sorenson & Milne 2009 Targeted: Sorenson PG, Milne JR. 2009. Porirua Harbour Targeted Intertidal Sediment Quality Assessment – February 2009. Report WGN_DOCS-#651177-V3 prepared by Greater Wellington Regional Council in association with Porirua City Council. 71p.
  • Metal contaminants
Milne & Warr 2006/7 Broad scale: Milne. J, Warr. S. 2007. Annual coastal monitoring report for the Wellington Region, 2006/07., 2006, 2005
  • Sediment quality
Milne 2007/8 Broad scale, fine scale: Milne, J.R., 2009. Annual coastal monitoring report for the Wellington region, 2007/08.
  • Habitat survey
  • Ecological monitoring
Milne et al 2006 Contaminants: Milne, J., Stephenson, G., Williamson, R.B., Mills, G.N., Olsen, G. and Green, M., 2006. Urban-derived contaminants in Porirua Harbour
  • Sediment contamination
NIWA 2005 Sediment analysis: NIWA Particle Size Analysis: Results May 2005.
  • PSA
Robertson & Stevens 2008 Fine scale: Robertson B & Stevens L. 2008. Porirua Harbour Fine Scale Monitoring 2007/08. Prepared for Wellington Regional Council and Porirua City Council June 2008, 2007
  • Sediment quality
  • Water quality
Sherriff 2004/5 Report: Sherriff, J., 2005. Coastal investigations technical report. Greater Wellington Regional Council, Environment.
  • PSA
  • Contaminants
  • Shellfish

More reports can be found on the GW document library: https://www.gw.govt.nz/document-library/.