Technical Report

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  A review of the potential to re-establish macrophyte beds in Te Waihora (Lake Ellesmere) (2937 KB)
  A review of the potential to re-establish macrophyte (floating plant) beds in Te Waihora (Lake Ellesmere)
  Author: Don Jellyman et al. (NIWA) Published: 01/05/2009 Type: Technical Report
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  Akaroa Harbour nutrient status: April 1989 – June 2004 (1176 KB)
  Results of water quality data collected over time from sites in Akaroa Harbour
  Author: Lesley Bolton-Ritchie Published: 01/03/2005 Type: Technical Report
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  An overview of the state and trends in water quality of Canterbury's rivers and streams (2471 KB)
  In this report the current state and trends in water quality in Canterbury waterways are assessed based on analysis of long-term data for the river types outlined in the Natural Resources Regional Plan.
  Author: Environment Canterbury Published: 11/08/2011 Type: Technical Report
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  An overview of the water quality of the rivers and streams of the Canterbury (1464 KB)
  An overview of the water quality of the rivers and streams of the Canterbury
  Author: A S Meredith & S A Hayward Published: 01/11/2002 Type: Technical Report
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  Appendices to salinity report – graphs of historical data (6573 KB)
  Appendices for: Salinity balance model for Lake Ellesmere/ Te Waihora and results from salinity – temperature surveys
  Author: Bob Spigel (NIWA) Published: 07/10/2009 Type: Technical Report
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  Ashley Estuary: Intertidal sediments and benthic ecology (2346 KB)
  Ashley Estuary: Intertidal sediments and benthic ecology
  Author: Fenwick, G., Chague-Goff, C. and Sagar, P. Published: 01/06/2010 Type: Technical Report
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  Benthic Ecology of Caroline Bay and the Port of Timaru (1034 KB)
  Benthic Ecology of Caroline Bay and the Port of Timaru
  Author: Fenwick, G., and Gust, N. Published: 01/07/2005 Type: Technical Report
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  Brown trout spawning in the Lake Ellesmere (Te Waihora) tributaries, and some surrounding catchments (6415 KB)
  Brown trout spawning in the Te Waihora (Lake Ellesmere) tributaries, and some surrounding catchments.
  Author: Mark Taylor & Marlynne Good (AEL) Published: 01/12/2006 Type: Technical Report
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  Canterbury high country lakes water quality monitoring programme: Results of 2006 monitoring and assessment of nutrient indices (625 KB)
  Results of monitoring water quality in Canterbury high country lakes during 2006
  Author: Adrian Meredith & Taryn Wilks Published: 01/06/2006 Type: Technical Report
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  Canterbury high country lakes water quality monitoring programme: Results of the third year monitoring 2007 (1936 KB)
  Results of monitoring water quality in Canterbury high country lakes during 2007
  Author: Adrian Meredith & Taryn Wilks Published: 01/07/2007 Type: Technical Report
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  Canterbury regional urban stream sediment and biofilm quality survey (4800 KB)
  An urban stream sediment and biofilm quality survey was undertaken in April-May 2011. The survey comprised 31 sites in urban waterways.
  Published: 31/10/2012 Type: Technical Report
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    Canterbury regional urban stream sediment and biofilm quality survey - Appendices (2070 KB)
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  Climate change impacts on Lake Ellesmere (Te Waihora) (2590 KB)
  A study of potential future climate change impacts on Lake Ellesmere (Te Waihora)
  Author: James Renwick et al. (NIWA) Published: 01/09/2010 Type: Technical Report
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  Coastal water quality in selected bays of Banks Peninsula 2001-2007 (951 KB)
  Results of water quality data collected over time from selected bays of Banks Peninsula
  Author: Lesley Bolton-Ritchie Published: 01/06/2008 Type: Technical Report
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  Coastal water quality Lake Ellesmere/Te Waihora to the Waitaki River Mouth (1474 KB)
  Coastal water quality Lake Ellesmere/Te Waihora to the Waitaki River Mouth
  Author: Lesley Bolton-Ritchie Published: 01/06/2006 Type: Technical Report
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  Constraints on phytoplankton production in Lake Ellesmere/Te Waihora (878 KB)
  Constraints on phytoplankton (suspended alage and plants) production in Lake Ellesmere/Te Waihora
  Author: Scott Larned & Mark Schallenberg (NIWA) Published: 01/07/2006 Type: Technical Report
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  Current nutrient loads and options for nutrient load limits for a case study catchment: Hurunui catchment (3475 KB)
  Nutrient load limits calculated for the Hurunui River catchment (as a case study for a proposed methodology)
  Author: Ned Norton & David Kelly Published: 01/08/2010 Type: Technical Report
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  Ecological status of Okains Bay estuary (1462 KB)
  This report presents detailed information on the ecological status of the Okains Bay estuary.
  Author: Lesley Bolton-Ritchie Published: 01/06/2008 Type: Technical Report
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  Ecosystem health monitoring programme November - December 2005 and site specific trend analysis 1999-2005 (1377 KB)
  Ecosystem health monitoring programme November - December 2005 and site specific trend analysis 1999-2005
  Author: Adrian Meredith & Susannah Vesey Published: 01/06/2006 Type: Technical Report
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  Ecosystem health monitoring programme November - December 2007 - Summary report (1296 KB)
  Ecosystem health monitoring programme November - December 2007 - Summary report
  Author: Mary Beech Published: 07/10/2011 Type: Technical Report
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  Effect of Lakes Ellesmere and Forsyth openings on the Banks Peninsula coastal environment (2555 KB)
  NIWA report on the effects of Te Waihora (Lake Ellesmere) and Wairewa (Lake Forsyth) opening on the surrounding marine environment
  Author: Graham Fenwick & Katie Image (NIWA) Published: 01/11/2002 Type: Technical Report
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  Effects of Lake Ellesmere (Te Waihora) openings on the coastal environment of Banks Peninsula (1379 KB)
  Environment Canterbury requires an assessment of the potential impacts of Lake Ellesmere discharges on Banks Peninsula’s ecological and human values to inform its resource consent applications to manage lake levels via artificial lake openings.
  Author: NIWA Published: 28/08/2012 Type: Technical Report
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  Examining the effects of the February 2010 far-field tsunami on the seabed sediments of Akaroa Harbour (4762 KB)
  This report describes a sediment study undertaken to examine the effects of the far‐field tsunami of 28 February 2010 within the confines of Akaroa Harbour.
  Author: Deirdre E Hart, Mary de Villiers Published: 03/10/2012 Type: Technical Report
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  Factors influencing the water quality of Akaroa Harbour - R12/90 (3241 KB)
  This report evaluates water quality differences between sites and over time based on water quality data collected by Environment Canterbury between 1989 and 2009 from Akaroa Harbour. February 2013.
  Author: Lesley Bolton-Ritchie Published: 18/04/2013 Type: Technical Report
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  Factors influencing the water quality of Lyttelton Harbour/ Whakaraupō (3143 KB)
  The report is based on data collected by Environment Canterbury between 1992 and 2008 from sites in Lyttelton Harbour/ Whakaraupō.
  Author: Lesley Bolton-Ritchie Published: 21/12/2012 Type: Technical Report
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  Freshwater dilution and transport in Canterbury Bight (2746 KB)
  This report describes modelling of the dynamics of freshwater-affected coastal waters. June 2012. To view Appendix A - Animations: www.ecan.govt.nz/publications/Pages/fresh-water-canterbury-bight.aspx.
  Author: NIWA Published: 10/12/2012 Type: Technical Report
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  Getting the Stormwater Message Across (2859 KB)
  Supporting information on the effects of selected residential activities on stormwater quality. (with particular reference to the aquatic ecosystems of the Avon River/Ōtākaro and Heathcote River/Ōpāwaho in Christchurch). December 2011.
  Author: Sean Waters Published: 14/05/2012 Type: Technical Report
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  Healthy Estuary and Rivers of the City - Water quality and ecosystem health monitoring programme of Ihutai (1002 KB)
  Development of a water quality and ecosystem health monitoring programme in the Avon-Ihutai estuary (Christchurch).
  Author: Lesley Bolton-Ritchie et al. Published: 01/02/2009 Type: Technical Report
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  Hurunui River - Influence of the middle reach tributaries on water quality of the lower Hurunui River (2005-2008) (2564 KB)
  Influence of Culverden Basin rivers on water quality of the Hurunui River 2005-2008
  Author: Olivier Ausseil Published: 01/03/2010 Type: Technical Report
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  Impacts of drain discharges on sediments and biota on a defined area of the Avon-Heathcote Estuary/Ihutai (7191 KB)
  Investigation of the discharges from the Charlesworth, City Outfall and Estuary drains on sediments and biota
  Author: Lisa Hack (EOS Ecology) Published: 01/09/2007 Type: Technical Report
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  Integrated study of surface water and shallow groundwater resources of the Orari catchment (5979 KB)
  Report on surface and groundwater resources in the Orari River catchment
  Author: Lee Burbery & Jen Ritson Published: 01/03/2010 Type: Technical Report
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  Jed River and Leamington Stream: Water Resources Summary (1080 KB)
  Water resource summary of the Jed River and Leamington Stream (North Canterbury)
  Author: Patricia Lockington et al. Published: 01/11/2007 Type: Technical Report
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  Lake Ellesmere (Te Waihora): a review of water clarity and the potential for macrphyte growth, and the benthic invertebrates, fisheries and birds, and their feeding relationships (3524 KB)
  A review of water clarity in Te Waihora (Lake Ellesmere) and it’s effects on the ecosystem
  Author: Paul Sagar et al. (NIWA) Published: 01/06/2004 Type: Technical Report
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  Low flows in the Waitohi River (1049 KB)
  Unpublished technical Analysis of low flow conditions in the Waitohi River (North Canterbury)
  Author: Suzanne Gabites Published: 01/04/2006 Type: Technical Report
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  Lyttelton Harbour/Whakaraupo nutrient status : April 1988 – June 2003 (2047 KB)
  Lyttelton Harbour/Whakaraupo nutrient status : April 1988 – June 2003
  Author: Lesley Bolton-Ritchie Published: 01/02/2004 Type: Technical Report
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  Mapping of the Bathymetry, soft sediments and biota of the seabed of upper lyttelton Harbour (3797 KB)
  This study examines the soft-sediment seabed of Lyttelton Harbour, from east of Purau Bay to the upper harbour shoreline
  Author: Hart, D., Marsden, I., Todd, D.J., de Vries, W.J Published: 07/10/2011 Type: Technical Report
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  Marine benthic infauna of three bays around Banks Peninsula (1119 KB)
  Marine benthic infauna of three bays around Banks Peninsula.
  Author: Graham Fenwick Published: 01/06/2002 Type: Technical Report
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  Marine Ecology of Akaroa Harbour: rocky shore and subtidal soft bottoms (641 KB)
  Marine Ecology of Akaroa Harbour: rocky shore and subtidal soft bottoms
  Author: Graham Fenwick Published: 01/05/2004 Type: Technical Report
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  Mean Annual Low Flow (Seven Day) and Mean Flow Mapping for the North and South Ashburton River Catchments (2471 KB)
  Low flow mapping of the Ashburton River catchment
  Author: Suzanne Gabites Published: 01/12/2006 Type: Technical Report
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  Mean Annual Low Flow (Seven Day) and Mean Flow Mapping for the Upper Selwyn River Catchment (2948 KB)
  Low and mean flow mapping of the upper Selwyn River catchment
  Author: Jeanine Topélen Published: 01/09/2007 Type: Technical Report
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  Mid-Canterbury Coastal Streams: assessment of water quality and ecosystem monitoring, 2000 to 2005 (4086 KB)
  Water quality and ecosystem health of mid Canterbury coastal streams (between the Rangitata to Ashburton Rivers) 2000-2005
  Author: Adrian Meredith et al. Published: 01/02/2006 Type: Technical Report
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  Nutrient water quality Avon-Heathcote Estuary/Ihutai. Inputs, concentrations and potential effects (1634 KB)
  Nutrient water quality Avon-Heathcote Estuary/Ihutai. Inputs, concentrations and potential effects.
  Author: Lesley Bolton-Ritchie and Malcolm Main Published: 01/06/2005 Type: Technical Report
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  Ohapi Creek: assessment of water quality and ecosystem monitoring, 1998 to 2003 (1722 KB)
  Water quality and ecosystem health of Ohapi Creek 1998-2003
  Author: Adrian Meredith et al. Published: 01/03/2004 Type: Technical Report
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  Pareora River: assessment of water quality and aquatic ecosystem monitoring, 1998 to 2003 (2139 KB)
  Water quality and ecosystem health of the Pareora River 1998-2003
  Author: Shirley Hayward et al. Published: 01/07/2003 Type: Technical Report
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  Port of Lyttelton ecological monitoring: May 2003 (1071 KB)
  This report presents the results of a second ecological monitoring survey of the intertidal biota and soft-bottom benthic infauna within the Lyttelton port area.
  Author: Graham Fenwick Published: 01/05/2003 Type: Technical Report
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  Remote sensing of river plumes in the Canterbury Bight (6296 KB)
  Report on the use of satellite remote sensing for detecting the extent of river plumes in the Canterbury Bight
  Author: Jill Schwarz et al. (NIWA) Published: 01/04/2010 Type: Technical Report
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  Results of ecosystem health monitoring in Canterbury 2000-2006 including a case study of change at Coes Ford on the Selwyn River (2909 KB)
  Ecosystem health monitoring programme November-December 2006 and site specific habitat trend analysis 2000 – 2006. Study of Selwyn River at Coes Ford
  Author: Mary Beech et al. Published: 01/05/2007 Type: Technical Report
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  Results of ecosystem health monitoring in Canterbury region between November 2000 and February 2003 (2979 KB)
  Results of ecosystem health monitoring in Canterbury 2000-2003
  Author: Rochelle Lavender et al. Published: 01/04/2004 Type: Technical Report
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  Review of flood frequency in the Canterbury Region (1473 KB)
  The purpose of the review is to update part of a previous national study by McKerchar and Pearson (1989) by including flood peak records collected in the Region since that earlier work, as well as incorporating records now available from additional stream gauges.
  Author: NIWA Published: 30/08/2011 Type: Technical Report
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  Review of Flood Frequency in the Orari and Temuka Rivers (3365 KB)
  Flood frequency relations are derived for five hydrological recording stations located in the Orari and Temuka River systems in South Canterbury.
  Published: 16/12/2011 Type: Technical Report
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  Review of proposed NRRP water quality objectives and standards for rivers and lakes in the Canterbury region (4696 KB)
  Proposal for water quality standards to be included in the Natural Resources Regional Plan for Canterbury
  Author: Shirley Hayward et al. Published: 01/03/2009 Type: Technical Report
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  Review of the frequency of high intensity rainfalls in Christchurch (2257 KB)
  Christchurch City Council and Environment Canterbury requested that a review be undertaken of the frequency of high intensity rainfalls in Christchurch.
  Author: NIWA Published: 01/09/2009 Type: Technical Report
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  Salinity balance model for Lake Ellesmere/Te Waihora and results from salinity – temperature surveys (452 KB)
  Report on a salinity balance model for Lake Ellesmere/Te Waihora and results from salinity – temperature surveys done in the lake
  Author: Bob Spigel (NIWA) Published: 01/10/2009 Type: Technical Report
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  Sediments and macrobiota of Brooklands Lagoon (971 KB)
  Investigation of the sediments and macrobiota at five sites down the lagoon
  Author: Lesley Bolton-Ritchie Published: 01/06/2007 Type: Technical Report
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  Sediments and macrobiota of the intertidal flats of inner Akaroa Harbour (1501 KB)
  Sediments and macrobiota of the intertidal flats of inner Akaroa Harbour
  Author: Lesley Bolton-Ritchie Published: 01/05/2005 Type: Technical Report
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  Seven Day Mean Annual Low Flow Mapping for the Upper Clarence River Catchment (1863 KB)
  Low flow mapping in the upper Clarence River catchment
  Author: Suzanne Gabites Published: 01/04/2006 Type: Technical Report
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  Seven day mean annual low flow mapping of the tributaries of the Waitaki River (5386 KB)
  Low flow mapping of the Waitaki River catchment.
  Author: Suzanne Gabites & Graeme Horrell Published: 01/01/2005 Type: Technical Report
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  Seven-day mean annual low flow and mean annual flow mapping of the Waipara River catchment, North Canterbury (3526 KB)
  Low and mean flow mapping of the upper Waipara River catchment
  Author: Frank Scarf Published: 01/10/2007 Type: Technical Report
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  State of the Canterbury Region Water Resource, October 2008 (6830 KB)
  Overview of the state of water resource quantity in Canterbury, as at October 2008
  Author: Adam Martin & Howard Williams Published: 01/10/2008 Type: Technical Report
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  State of the Canterbury region water resource, October 2009 (5047 KB)
  Overview of the state of water resource quantity in Canterbury, as at October 2008
  Author: Adam Martin & Phillipa Aitcheson-Earl Published: 01/10/2009 Type: Technical Report
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  Surface water balance components of the Ashley- Waimakariri plains (5499 KB)
  Surface water balance components of the Ashley- Waimakariri plains. July 2012
  Author: Environment Canterbury Published: 16/07/2012 Type: Technical Report
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  The importance of tributary streams of Te Waihora/Lake Ellesmere in maintaining populations of longfin eels (2221 KB)
  A study investigating the importance of tributary streams of Te Waihora/Lake Ellesmere in maintaining populations of longfin eels
  Author: Don Jellyman & Eric Graynoth (NIWA) Published: 01/06/2010 Type: Technical Report
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  The Okana River: assessment of water quality and ecosystem monitoring, July 1992 to May 2002 and water quality implications for Lake Forsyth/ Wairewa (2914 KB)
  Water quality and ecosystem health of tributaries of Te Roto o Wairewa (Lake Forsyth) 1992-2002
  Author: Malcolm Main et al. Published: 01/05/2003 Type: Technical Report
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  The surface water resource of the Lake Ellesmere/ Te Waihora catchment (4542 KB)
  Description of the water resource of the Te Waihora (Lake Ellesmere) catchment.
  Author: Dan Clark Published: 01/07/2011 Type: Technical Report
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  Timaru Harbour water quality September 1998 June 2005 (1528 KB)
  Timaru Harbour water quality September 1998 – June 2005
  Author: Lesley Bolton-Ritchie Published: 01/05/2006 Type: Technical Report
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  Upper Akaroa Harbour sediment Bathymetry and soft sediments, A baseline mapping study. (4157 KB)
  Study to examine the soft sediment seabed of upper Akaroa Harbour including areas north of Cape Three Points and The Kaik, to the upper harbour shoreline.
  Author: Hart, D., Todd, D.J., Nation, T, E. and McWilliams, Z.A Published: 01/01/2009 Type: Technical Report
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  Waiau River hydrological information (4732 KB)
  Hydrological information for the Waiau River catchment (North Canterbury) compiled for flow planning purposes.
  Author: Jeff Smith Published: 01/11/2010 Type: Technical Report
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  Waihao-Wainono Hydrological Information Report - R12/101 (4881 KB)
  This report summaries the hydrology of the Waihao-Wainono catchment, it looks at various sites throughout the catchment which have been part of an investigation to assess the current planning regime.
  Author: Adam Martin, Darren Leftley Published: 14/05/2013 Type: Technical Report
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  Waimakariri tributary report (1076 KB)
  Results of water quality monitoring in tributaries of the lower Waimakariri River
  Published: 01/02/2009 Type: Technical Report
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  Waipara River: assessment of water quality and aquatic ecosystem monitoring, 1999 to 2002 (1990 KB)
  Report on water quality and ecosystem health of the Waipara River 1999-2003
  Author: Shirley Hayward et al. Published: 01/12/2003 Type: Technical Report