Freshwater Constraints to Economic Development
Total Page:16
File Type:pdf, Size:1020Kb
FRESHWATER CONSTRAINTS TO ECONOMIC DEVELOPMENT PREPARED FOR Bay of Plenty Regional Council WL18016 21/12/2018 PREPARED BY Ian McIndoe Ayaka Kashima Disclaimer This document has been prepared solely for the benefit of Bay of Plenty Regional Council. No liability is accepted by Aqualinc Research Ltd or any employee or sub-consultant of this Company with respect to its use by any other person. This disclaimer shall apply notwithstanding that the document may be made available to other persons for an application for p ermission or approval or to fulfil a legal requirement. Quality Control Client Bay of Plenty Regional Council Document Title Freshwater Constraints to Economic Development Document Number 1 Authors Ian McIndoe, Ayaka Kashima Reviewed By Santiago Bermeo Approved By Ian McIndoe Date Issued 21/12/2018 Project Number WL18016 Document Status Final File Name FW Constraints to Economic Development Final 21Dec2018.docx For more information regarding this document please contact Ian McIndoe Director Aqualinc Research Limited (03) 964 6521 [email protected] The preferred citation for this document is: McIndoe I, Kashima A, 2018. Freshwater Constraints to Economic Development. Bay of Plenty Regional Council, 1. Aqualinc Research Limited. © All rights reserved. This publication may not be reproduced or copied in any form, without the permission of the Client. Such permission is to be given only in accordance with the terms of the Client’s contract with Aqualinc Research Ltd. This copyright extends to all forms of copying and any storage of material in any kind of information retrieval system. TABLE OF CONTENTS EXECUTIVE SUMMARY ..................................................................................................... 1 1 INTRODUCTION ........................................................................................................ 4 1.1 Background ............................................................................................................................................. 4 1.2 Objectives ............................................................................................................................................... 4 1.3 Expected outputs .................................................................................................................................... 5 1.4 Dissemination/ workshops ...................................................................................................................... 5 1.5 Planning context ..................................................................................................................................... 5 2 METHODOLOGY ....................................................................................................... 7 2.1 Phase 1 Methodology– Regional overview at WMA scale ...................................................................... 7 2.1.1 Potential water demand ............................................................................................................. 7 2.1.2 Potential irrigable area ............................................................................................................... 8 2.1.3 Water allocation for irrigation ..................................................................................................... 8 2.1.4 Supply-demand comparison ...................................................................................................... 9 2.2 Phase 2 Methodology– Case studies at WMA or catchment scale.......................................................... 9 2.2.1 Current consented surface water and groundwater ................................................................. 10 2.2.2 Potential irrigable areas ........................................................................................................... 10 2.2.3 Existing land use ...................................................................................................................... 11 2.2.4 Future land use ........................................................................................................................ 12 2.2.5 Current Supply and Demand.................................................................................................... 12 2.2.6 Reasonable use allocation ....................................................................................................... 15 2.2.7 Future Supply and Demand ..................................................................................................... 16 2.2.8 Potential impacts ..................................................................................................................... 17 2.3 Phase 3: Workshops ............................................................................................................................. 19 3 PHASE 1 .................................................................................................................. 21 3.1 Potential irrigable area .......................................................................................................................... 21 3.2 Supply-demand balance ....................................................................................................................... 22 3.3 Opportunities and constraints ............................................................................................................... 24 3.4 Overview of Māori-land ......................................................................................................................... 25 4 PHASE 2 – CASE STUDIES .................................................................................... 26 4.1 Waioeka/Otara WMA ............................................................................................................................ 26 4.1.1 Catchment outline .................................................................................................................... 26 4.1.2 Waioeka/Otara total allocation limits ........................................................................................ 29 4.1.3 Allocable water with reasonable use ........................................................................................ 30 4.1.4 Potential irrigable area and land use change ........................................................................... 30 4.1.5 Comparison of supply and demand ......................................................................................... 33 4.1.6 Economic opportunities ............................................................................................................ 34 4.1.7 Water quality ............................................................................................................................ 34 Water Management Report / Freshwater Constraints to Economic Development Bay of Plenty Regional Council / 1 / 21/12/2018 © Aqualinc Research Ltd. i 4.1.8 Summary .................................................................................................................................. 34 4.2 Wairoa catchment (Tauranga Moana WMA) ......................................................................................... 35 4.2.1 Catchment outline .................................................................................................................... 35 4.2.2 Wairoa total allocation limits ..................................................................................................... 38 4.2.3 Allocable water with reasonable use ........................................................................................ 39 4.2.4 Potential irrigable area and land use change ............................................................................ 39 4.2.5 Comparison of supply and demand .......................................................................................... 42 4.2.6 Economic opportunities ............................................................................................................ 43 4.2.7 Water quality ............................................................................................................................ 43 4.2.8 Summary .................................................................................................................................. 43 4.3 Kaituna-Pongakawa-Waitahanui WMA .................................................................................................. 43 4.3.1 Kaituna Catchment ................................................................................................................... 44 4.3.2 Pongakawa and Waitahanui catchments .................................................................................. 51 4.4 Rangitāiki WMA ..................................................................................................................................... 59 4.4.1 Lower Rangitāiki Catchments ................................................................................................... 59 4.4.2 Mid and Upper Rangitāiki Catchments ..................................................................................... 68 4.5 Tarawera WMA ..................................................................................................................................... 76 4.5.1 Catchment outline .................................................................................................................... 76 4.5.2 Tarawera total allocation limits ................................................................................................