An Integrated Approach to Managing Auckland's Coast

Transcription

1 IPWEA NZ CONFERENCE 2017 DUNEDIN An Integrated Approach to Managing Auckland's Coast Paul Klinac Team Manager: Coastal and Geotechnical Services Engineering and Technical Services Unit Auckland Council. NZ 2017 DUNEDIN IPWEA NZ CONFERENCE 2017 DUNEDIN

2 Presentation Outline 1. Auckland's coastal environment 2. Coastal hazard context (and related issues) 3. Regulatory framework 4. Valuing the coast (assets and related uses) 5. Development of a coastal management framework & management tools

3 3,100km of coastline (multiple harbours and offshore islands). 21,000km of inland waterways. 26 Regional Parks (~200km of undeveloped coastline). Characterised by extensive reclamation & modification in response to urbanisation and varying degrees and types of coastal hazards.

4 Parks Coastal Assets: Coastal defence and public access Coastal Assets Asset Count Area size (m 2 ) Replacement Value Boat Ramps ,309 $8,044,997 Jetties $983,796 Pontoons $1,844,510 Seawalls ,067 $183,378,249 Wharves 95 13,455 $27,494,696 Grand Total ,037 ~$222 M (300M) Note: The above is confined to Parks structural assets and does not include green assets or assets under the jurisdiction of Stormwater, Auckland Transport or related CCO s.

5 Coastal Hazard Context: Predominance of development immediately landward of eroding soft sedimentary cliffs or within low-lying areas. Climate change (1m SLR by 2115) and future growth will exacerbate existing hazards. Impacts will vary but will include: - Increased erosion and land instability; - More extensive inundation and more frequent storm surges; - Reduced performance and failure of infrastructure; and - Increased infrastructure maintenance costs.

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7 AUCKLAND PLAN 1. Identifies risks 2. Increased resilience of communities Strategic direction via: UNITARY PLAN (Operative in Part) 1. Objectives, policies, rules to respond to natural hazards & climate change 2. Controls for development year timeframe in respect of changing risks over time 4. Precautionary approach (1m SLR by 2115 and longer term SLR)

8 Note: Yellow dots represent SLR values currently specified in the Ministry for Environment (MfE) guidance to apply to mid 2090 s.

9 Operational Management (Historical Issues): Disparate and incomplete information. Historic practices typically reactionary with focus on urgent responses. Absence of proactive and holistic planning. Not capturing risks associated with assets or lifelong management costs to aid prioritisation of responses.

10 A Coastal Management Framework (Context): Auckland Council acknowledged the importance of improved coastal management via a review of Long-term Plan ( ). Council resolved the Governing Body note the urgent requirement to commission a region wide erosion, sea level rise and inundation study (Resolution number BUD/2015/53). Council family workshop with Governing Body (August 2015) to agree a framework for decision making and related principles.

11 Coastal Management Principles: Collective agreement to embed the following principles: 1. Take a systems approach; 2. Consider at least 100yr timeframe; 3. Consider time or event dependent options; 4. Embed climate change impacts into approach; 5. Develop appropriate technical solutions; and 6. Develop and adopt a consistent decision making framework.

12 Supporting Objectives of Framework: Collective agreement to develop a best practice, operational approach which seeks to: Long term, balanced perspective to facilitate an environmentally and financially sustainable approach; A sound understanding of coastal hazards, climate change and coastal assets to facilitate robust and defensible decisions; Promote public understanding and an appreciation of coastal hazards and climate change; and Develop a decision making process that is clear, transparent, and takes account of diverse AC and CCO drivers.

13 Developing a Decision Making Framework: CCMPs

14 Coastal Compartment Management Plans: 1. Non statutory plans that articulate a shared vision for an area and identify the policies and actions required to address issues and achieve the vision. 2. Aim is to improve integrated management and development of prioritised sections of coast within council, other agencies, and the community.

15 CCMPs Continued 3. A reference base document to guide resource consent preparation; work programmes for asset managers; education and volunteer programmes; monitoring and research requirements.

16 Orewa Beach Pilot:

17 CCMP Criteria: Prioritised Management Zones Distinction between areas requiring immediate or longer term responses. Consideration of a range of management options available

18 Zones 3 & 4 (High Priority):

19 CCMP Criteria: Prioritised Management Zones Distinction between areas requiring immediate or longer term responses. Consideration of a range of management options available

20 Zones 10, 11 & 12 (Lower Priority):

21 A B C D E

22 Next Steps: Present final version of the coastal management framework to the Governing Body in July. Advise outcomes of 21 Local Board workshops and Mana whenua engagement. Complete a review of existing coastal asset data. Refine a multi criteria decision making matrix for application. Prioritise and commence a series of hot spot Coastal Compartment Management Plans via stakeholders, communities and mana whenua.

23 "We can't solve problems by using the same kind of thinking we used when we created them." Albert Einstein.