Long Term Plan 2018-2028 Draft Asset Management Plans
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Long Term Plan 2018-2028 Draft Asset Management Plans DRAFT FOR CONSULTATION - February 2018 Table of Contents Section Page Rivers and Drainage Asset Management Plan 2018‐2068 1 Rotorua Te Arawa Lakes Programme Asset Management Plan 2018‐2028 268 Maritime Operations Asset Management Plan 2018‐2028 305 Regional Parks Asset Management Plan 2018‐2028 319 DRAFT DRAFT Rivers and Drainage Asset Management Plan 2018/2068 DRAFT FOR CONSULTATION Page 1 of 371 Document control Document information Document name: Rivers and Drainage Asset Management Plan 2018-2068 Programme responsibility: Rivers and Drainage Asset Team Status: Draft for Council approval Document history Author Description of change Date Version Kirsty Brown/ Draft for consultation February 2018 1.0 Roger Waugh Future review Review timeframe: 2020/21 In line with the requirements of Council’s Long Term Plan. Distribution control Person Role Date of issue Version Kirsty Brown Asset Management February 2018 1.0 Specialist Approved for issue: Signed: ..................................................... Date: ................................... Kirsty Brown DRAFT Asset Management Specialist Signed: ..................................................... Date: ................................... Roger Waugh Rivers & Drainage Asset Manager Signed: ..................................................... Date: ................................... Chris Ingle General Manager Integrated Catchments Draft 2018-2068 Rivers & Drainage Asset Management Plan i Page 2 of 371 Contents 1 Introduction 1 1.1 Purpose of this Plan 1 1.2 The Bay of Plenty region 1 1.3 Rivers and drainage at a glance 4 1.4 Overview of asset management planning 5 1.5 Relationship with other plans and documents 6 1.6 Scope of this Plan 9 2 Strategic environment 11 2.1 Strategic overview 11 2.2 Rationale for Councils’ involvement in the rivers and drainage activity 14 2.3 Key partnerships and stakeholders 14 2.4 Business drivers 14 3 Business overview 21 3.1 Funding and expenditure 21 3.2 Rivers and drainage schemes 22 3.3 Potential significant negative effects of this activity 29 3.4 Delivery of services 31 4 Levels of service DRAFT 35 4.1 Overview 35 4.2 Linking LoS to community outcomes 36 4.3 Rivers and Drainage Levels of Service, performance measures and reporting 40 4.4 Design standards 43 5 Community engagement 57 5.1 Overview 57 5.2 Consultation Policy 57 ii Draft 2018-2068 Rivers & Drainage Asset Management Plan Page 3 of 371 5.3 Draft Long Term Plan 2018-2028 consultation 59 5.4 Current and future stakeholder consultation 60 6 Growth and demand 63 6.1 Rivers and Drainage overview 63 6.2 Significance of growth to flood management 64 6.3 Environmental factors 67 6.4 Community expectations and risk 67 6.5 Management of hazards and safety 68 6.6 Legislation 69 6.7 Demand management planning 70 6.8 Capital works programme and funding 71 7 Environmental stewardship 73 7.1 Overview 73 7.2 Environmental drivers 73 7.3 Consents 78 7.4 Floodplain Management Strategies 86 7.5 Environmental Considerations 86 7.6 Hazards 90 7.7 Future requirements DRAFT 93 8 Risk management 95 8.1 Overview 95 8.2 Current situation 96 8.3 Risk management process 97 8.4 Risk Register 101 8.5 Risk Action Plan 110 8.6 Critical Assets 116 Draft 2018-2068 Rivers & Drainage Asset Management Plan iii Page 4 of 371 9 Lifecycle management 121 9.1 Introduction 121 9.2 Overview 122 9.3 Asset overview 123 9.4 Asset Inventory Summary 125 9.5 Asset valuation summary (1 July 2017) 128 9.6 Asset condition 131 9.7 Asset capacity and reliability 134 9.8 Asset Maintenance Plan 136 9.9 Erosion protection asset 140 9.10 Pump stations 143 9.11 Stopbanks 146 9.12 Structures 149 9.13 Waterways 152 9.14 Kaituna Catchment Control Scheme 154 9.15 Rangitāiki Drainage Scheme 165 9.16 Rangitāiki-Tarawera Rivers Scheme 170 9.17 Waioeka-Otara Rivers Scheme 177 9.18 Whakatāne-Tauranga Rivers Scheme 184 10 Projects and financialDRAFT forecasts 193 10.1 Overview 193 10.2 Asset management financial assumptions 194 10.3 Summary financial forecast – all schemes 195 10.4 Maintenance planning 207 10.5 Capital and replacement planning 208 10.6 Capital and Replacement projects – all schemes 210 10.7 Disposals 213 10.8 Asset valuation 213 iv Draft 2018-2068 Rivers & Drainage Asset Management Plan Page 5 of 371 10.9 Policies 215 10.10 Risk to significant forecasting assumptions 217 11 Business processes 219 11.1 Overview 219 11.2 Lifelines 219 11.3 Civil Defence Emergency Management 219 11.4 Bay of Plenty Regional Council Flood Warning Manual 221 11.5 Business systems 222 11.6 Asset Management Plan review and monitoring 223 11.7 Compliance with LGA 2002 Schedule 10 Requirements 225 11.8 Progress towards achieving advanced AMP against the OAG criteria 226 12 Improvement Plan 237 12.1 Asset management improvement process 237 12.2 What are typical key improvement areas? 237 12.3 Asset management information systems 239 12.4 Asset data and knowledge processes 245 Glossary of terms 267 References and acknowledgementsDRAFT 269 Draft 2018-2068 Rivers & Drainage Asset Management Plan v Page 6 of 371 1 Introduction 1.1 Purpose of this Plan The purpose of this Plan is to formally document the management philosophy that is applied to the rivers and drainage infrastructure assets and services. This approach ensures that acceptable levels of service is provided in the most cost effective manner and contribute to the achievement of the Long Term Plan (LTP). This long-term planning approach is considered necessary given the large capital and operating expenditure, the long lives of the assets and the lead times in planning for upgrades, of new assets when required. The sequencing and timing of works are developed through discussions with key stakeholders and this Plan is prepared in consultation with them. The key purpose of this plan is to: Provide a document to convey the long-term strategy for the management of the rivers and drainage assets and services. Improve understanding of service level standards, options and costs to smooth peak funding demands, while improving customer satisfaction and organisational image. Manage the environmental, service delivery and financial risks of asset failure. Identify lifecycle (long-term) costs to provide agreed level of service over the long-term. Explain how the long-term works programmes have been developed and how they will be funded. This AMP also aims to demonstrate that the service potential of the rivers and drainage assets is being maintained. 1.2 The Bay of Plenty region The place The Bay of Plenty is located on the east coast of the North Island of New Zealand. The region incorporates the full extent of the coastline from Cape Runaway in the east, to Waihi Beach in the west and captures the coastal townships of Tauranga and Whakatāne. On the landward side, the region is mostly bounded by the watersheds of the catchments that flow into the Bay of Plenty; this includes the lakes in the Rotorua district. On the ocean side, the region includes 18 offshore islands including the volcanically active White Island, and the sea extending out to the 12-nautical- mile boundary. The area of the region is DRAFT21,740 square kilometres, comprising 12,231 square kilometres of land and 9,509 square kilometres of coastal marine area as shown in Figure 1 below. Draft 2018-2068 Rivers & Drainage Asset Management Plan 1 Page 7 of 371 Figure 1 Map of the Bay of Plenty region. The natural environment The Bay of Plenty region has a number of prominent features and landmarks. The prominent features of the region include islands such as Matakana, Tuhua (Mayor) and an active volcano; Whakaari (White Island). Other distinctive landmarks in the region include the numerous lakes of the Rotorua district and the distinctive peaks of Mount Tarawera and Putauaki, the Tauranga and Ohiwa Harbours and MauaoDRAFT (Mount Maunganui). The region is volcanically active with the Taupo Volcanic Zone crossing the area between White Island and Lake Taupo. The two major features of this zone include a number of extensive geothermal areas (for example those found in Rotorua) and a number of earthquake fault lines that run parallel to each other within this zone. Eight major rivers flow into the Bay - these are the Raukōkore, Mōtū, Waioeka, Whakatāne, Rangitāiki, Tarawera, Kaituna, and Wairoa rivers. In addition, there are seven large estuaries - the Maketu, Little Waihi, Whakatāne, Waiotahi, Waioeka/Otara, Tauranga, and Ōhiwa. The abundance of waterways in the area combine to enhance the active lifestyle opportunities for the Bay’s residents and visitors and also presents a number of challenges regarding provision of access to waterways whilst protecting the surrounding areas from extreme flooding events. The region extends inland, generally to the ridge of the catchments that drain into the Bay of Plenty. The furthest point from the coast is the top of the Rangitāiki River Catchment which is 139 kilometres from the sea. 2 Draft 2018-2068 Rivers & Drainage Asset Management Plan Page 8 of 371 Climate The Bay of Plenty generally has one of the sunniest climates in New Zealand, especially in coastal areas where dry spells have been traditionally quite common place. Annual rainfall follows variations in topography and varies from 1,400 mm near the coast to 4,000 mm on the highest parts of the Raukumara Ranges. Indications of climate change by the IPCC are that the Bay of Plenty region may receive less rainfall in future, however the intensity and frequency of high rainfall events will likely to increase. Sea level is predicted to rise with increased magnitude of tidal storm surges. The region has lower than average wind.