Plan Highlights – Key Issues and Projects Commonly used methods for increasing flood capacity include constructing Urban Growth Effects stopbanks and deepening the river channel through gravel extraction. Proposed new zone developments need to The lower Wairau Floodplain includes several thousand hectares which are follow planned roading layouts and services less than two metres above sea level and average sea levels are predicted to plans to ensure good community outcomes and rise by 0.3 m by 2050. In 2019 the Council will start a review of the core equitable cost sharing. Capital costs are Wairau River Floodway Management Plan. This willtake climate change into expected to be met by developers, with road account as well as the 25 years of additional flow data collected since the costs recovered by Council zone levies. current plan was originally prepared. Once the flood risk data has been updated the Council willundertake a major public consultation exercise with High Impact Natural Events the key stakeholders on an updated plan for the key Wairau works through to Over recent years storm events and earthquakes 2050. The objective is to gain more understanding of the desired level of have had a large effect on Council’s Roading service and willingness to pay for future flood protection works. budgets and the frequency of these storm events is likely to increase as a result of climate change. Council has provided Major projects and estimated cost? additional funding to meet the cost of these events. Area Major capital projects Inflated value Conflicting Road Network Use (millions) $17.8 The increase in viticulture, forestry, tourism and an ageing demographic is Wairau 2018–28 Flood protection and control resulting in the transport network being used for many different purposes. floodplain to works Council is planning how it can provide a safe transport network that affordably the meets the needs of all road users. Waihopai confluence Major projects and estimated cost Wairau 2018–28 Pump station and drainage $3.9 Area Major capital projects Inflated value floodplain network upgrades, excluding town branch (millions) drain 2018–23 Town branch drain upgrades $7.2 General 2018–28 Northwest Blenheim extension $6.0 roading zone development 2018–28 Renewal of existing $76 Roads and Footpaths infrastructure (e.g. drainage, resealing, Deterioration of Bridges and Culverts rehabilitation, seal widening, metaling etc) Council has more than 360 bridges in its transport network. Currently 28 $0.8 bridges are posted for not meeting Class 1 criteria, which means restricted 2018–19 Kenepuru Road sealed speeds apply to them, and seven also have weight restrictions. As many pavement bridges as possible willbe replaced during this LTP period (2018–2028) within 2018–28 Minor safety improvements $24.2 the financial constraints. 2018-2028 Long Term Plan Page 10