A climate smart Durban: Local action for a resilient city

Transcription

1 HEADING OF SECTION OR PRESENTATION - Biodiversity A climate smart Durban: Local action for a resilient city Meggan Lewis Environmental Planning and Climate Protection Department EThekwini Municipality Durban, South Africa. ethekwini Municipality Planning Unit ENVIRONMENTAL PLANNING & CLIMATE PROTECTION DEPARTMENT

2 The local context HEADING OF SECTION OR PRESENTATION - Biodiversity Largest port and city on east coast of Africa: km 2 Population: 3.6 million 34.4% unemployment HIV/Aids - life expectancy of 47 Backlog of housing units Global biodiversity hotspot

3 Municipal HEADING OF Climate SECTION Protection OR PRESENTATION Programme - Biodiversity (MCPP) Information sharing and Blue Sky Research Vulnerability Assessment ( ) Adaptation (2005- ) Developing the toolkit (2007- ) Mainstreaming climate protection (2007- ) Assessing local impacts of climate change Carbon storage and sequestration analysis IDP Headline Adaptation Strategy Municipal Adaptation Plans Community Adaptation Plans Integrated Assessment Tool Sea level rise tool Pilot projects Institutional change

4 HEADING Adaptation OF SECTION OR PRESENTATION - Biodiversity Headline Adaptation Strategy Municipal sectors vulnerable to climate change. Where adaptation is required. The range of potential adaptation options. Municipal Adaptation Plans Water Health Disaster Management

5 Ref HEADING OF SECTION OR PRESENTATION - Biodiversity Adaptation Category Sub-category Impact Intervention Implementation plan (including policy framework for addressing issue) Outcome Priority Responsible Parties (1st listed = lead) Resource Availability (within lead party) Timing Aligned with IDP? W1 Water Infrastructure Protection (New) Flooding Detailed analysis of latest rainfall/run-off projections and modelling of systems to be finalised. University of KwaZulu Natal to finalise Improved understanding of the impact of detailed analysis of quinery level projections. climate change on rainfall and run off and Water sector officials to work with identification of particularly vulnerable researchers to understand the nature of and areas. how to interpret results Expand municipality's rain gauge network by 30 gauges. H Environmental Available - work in Management progress Department, University of KwaZulu Natal, Coastal and Storm water Catchment Management Ongoing Plan 1: Sustaining our Natural and Built Environment Plan 3: Quality Living Environments W2 Water Infrastructure Protection (New) Flooding Revise rainfall data in line with latest projections (as of 30 September 2009) and review every 5 years. Coastal and Storm water Catchment - Impact of climate change on rainfall Management officials to commission revision patterns, flooding and run-off embedded of rainfall data for Durban based on into surveys, planning and design projections as of 30 September New infrastructure to be designed to Revised report to be published on ethekwini manage increased runoff/reduced water website availability (e.g. pipe size fits amended runoff projections) - Increased resilience of Durban's infrastructure and development to extreme weather events - Any changes in projected rainfall patterns incorporated into planning through regular review of latest research. H Coastal and Storm water Catchment Management, Coastal Policy In house, in the normal course of business. Revised data to be Plan 1: Sustaining our published by Dec Natural and Built 09, 5 yearly review Environment Plan 3: Quality Living Environments W3 Water Infrastructure Protection (New) W4 Water Infrastructure Protection (New) W5 Water Infrastructure Protection (New) W6 Water Infrastructure Protection (New) Flooding Elevate Flood Annexure to Council Policy Write covering report and submit to council for approval Flooding Flooding Sea Level Rise Reduce risk to developments in flood plains through amendment of Bylaw 5.2 (2) (iii) to require developments within the 1:100 yr floodline within ethekwini boundaries to comply with the Flood Annexure Develop Master Drainage Plans for all river catchments within ethekwini municipal boundaries Revise coastal set back lines Coastal and Storm water Catchment Management officials and Gabby Hughes in Legal to produce an appropriate bylaw. Report to be drafted and submitted to Infrastructure Committee and ExCo and published for public comment before approval. - Enables more sustainable development in Durban. - Reduces risk of flooding to property. - Will ensure that the implications of climate change are placed at the forefront of spatial land use planning considerations and will help ensure that any planning proposals or development approvals complement the adaptation interventions listed in this plan. Compliance with the Flood Annexure will ensure revised rainfall data and hence climate change are incorporated in planning and designs - Based on rainfall projections at 30 - Impact of development on flow better September 2009, revise 1:50 and 1:100yr understood and reduced. flood lines to take revised rainfall and run-off - Floodlines reflect flood risks modified for data into account climate change influence on run-off. - Identify priority areas for interventions to - Newly identified developments potentially reduce risk at risk required to comply with the Flooding Annexure and become resilient to climate change. - Better alignment of planning and risk. Determine and demarcate the High Water Mark based on sea-level rise modelling and revise coastal set back lines accordingly Coastal set back lines modified for climate change influence on sea level and storm surges H M H H Coastal and Storm water Catchment Management, Coastal Policy Coastal and Storm water Catchment Management, Legal Department Coastal and Storm Water Catchment Management In house, in the normal course of business. In house, in the normal course of business. In house, in the normal course of business. Coastal Policy, In house, in the Coastal and Storm water normal course of Catchment Management business. October 2009 Plan 3: Quality Living Environments Issue instruction by December 2009 From October ongoing Plan 3: Quality Living Environments Plan 3: Quality Living Environments By 30 September Plan 1: Sustaining our 2009 for a new setback line. Natural and Built Environment

6 HEADING OF SECTION OR PRESENTATION - Biodiversity Reference Adaptation Category Sub-category Impact Intervention Implementation Plan Outcome Priority Responsible Party Resource Availability Timing Aligned with the IDP

7 Multi-Criteria Analysis HEADING OF SECTION OR PRESENTATION - Biodiversity Impact on risk Ancillary Benefits Reversible or Flexible Impact on emissions Allows complementary options Ease of implementation Institutional complexity Cost: benefit Risk of maladaptation

8 Community HEADING OF SECTION Adaptation OR PRESENTATION Plans - Biodiversity Pilot project in two poor, high risk communities: Ntuzuma (urban) and Ntshongweni (rural) Livelihoods Analysis Food Security Microscale Agricultural Water Management

9 Community HEADING OF SECTION Adaptation OR PRESENTATION Plans: Livelihoods - Biodiversity Analysis Vulnerability matrix: Ntuzuma Vulnerability matrix: Ntshongweni Climate Variability Demographics Livelihood Strategy Climate Variability Demographics Livelihood Strategy Infrastructure Social networks Infrastructure Social networks Water and Waste Food Security Water and Waste Food Security

10 Community HEADING OF SECTION Adaptation OR PRESENTATION Plans: Food Security - Biodiversity Maize productivity: taking temperature (reduction or more erratic rainfall) into account. Alternative crops: test yield and social acceptability. Most successful: Amadumbies Cassava Sweet potatoes BUT sourcing and processing

11 Community HEADING OF SECTION Adaptation OR PRESENTATION Plans: Food Security - Biodiversity BUT rainfall found to be the key variable, enough rain, future not so bleak for maize, hence WATER HARVESTING and CONSERVATION is key as well as a potential SHIFT in planting dates.

12 Developing HEADING OF SECTION the toolbox: OR PRESENTATION Sea-level rise - Biodiversity modeling Current sea-level rise east coast of SA = 2.74 mm per year Sea-level rise scenarios: 300 mm (90 % chance of happening by 2100) 600 mm (10 % chance of happening by 2100) 1000 mm (1 % chance of happening by 2100)

13 Developing HEADING OF SECTION the toolbox: OR PRESENTATION Sea-level rise - Biodiversity modeling

14 Developing HEADING OF SECTION the toolbox: OR PRESENTATION Integrated Assessment - Biodiversity Tool Evaluate long-term city plans and policies against the impacts of climate change. (1) Educational material. (2) Documentation store. (3) Spatial tool.

15 Pilot HEADING projects: OF SECTION Green OR Roof PRESENTATION Pilot Project - Biodiversity

16 Pilot HEADING projects: OF SECTION Green OR Roof PRESENTATION Pilot Project - Biodiversity

17 Pilot HEADING projects: OF SECTION Green OR Roof PRESENTATION Pilot Project - Biodiversity

18 HEADING OF SECTION OR PRESENTATION - Biodiversity Pilot projects: Buffelsdraai Community Reforestation Project Reforest 650ha buffer zone around new regional landfill site Part of the greening of the 2010 FIFA Soccer World Cup Socio-economic benefits. Ecosystem goods and services provided water, biodiversity, carbon sequestration.

19 HEADING Institutional OF SECTION Change OR PRESENTATION and exciting - Biodiversity progress Climate Protection Branch Energy Office Durban s commitments: Mayor WMCCC. Making Cities Resilient Campaign. Mexico City Pact. COP17.

20 HEADING OF SECTION OR PRESENTATION - Biodiversity Contact details: Meggan Lewis LewisM@durban.gov.za Tel: Fax: