Welcome

Introduction to the project

Sharon Bleese, Project Manager

Lowestoft Flood Risk Management Project reducing risk, supporting growth, creating opportunities

December 2013 tidal surge impacts

• Largest in Lowestoft since 1953

• Over 160 properties affected

• Businesses brought to standstill

• Highlighted the inadequacy of Lowestoft’s defences and the impact on existing and potential growth

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Economic study headlines (1)

Total jobs: 10,900 Total GVA (million) £499

Proportion of current economic footprint at risk of flooding under two scenarios Without climate change With climate change

Scenarios

Jobs GVA Jobs GVA

1. Do minimum 22% 23% 63% 71%

1. Preferred tidal gate and wall scheme 2% 2% 2% 2%

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Economic study headlines (2)

Total jobs: 14,400 Total GVA (million) £694

Future economic footprint (assuming AAP delivered)

Scenarios

Jobs GVA Jobs GVA

1. Do minimum 28% 27% 70% 77%

1. Preferred tidal gate and wall scheme 2% 2% 3% 3%

Proportion of future economic footprint at risk of flooding under two scenarios Without climate change With climate change

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Lowestoft Flood Risk Management Project

Reducing tidal risk - temporary defences

Tidal Flood Risk Management Ben Purkiss, CH2M

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Lowestoft FRMP – Tidal scheme

Options considered

1. Do nothing – walkaway

2. Do minimum – maintain status quo

3. Improve: Walls only

4. Improve: Outer harbour barriers & walls

5. Improve: Bascule bridge barrier & walls

6. Improve: Barriers at Third Crossing & walls

7. Temporary flood defences

8. Property level resilience

(Shortlisted options in bold)

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Options considered

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Key shortlisted options 3. Improve –

flood walls only

Discounted, due to:

Tidal inundation into Lake Lothing.

Increased flood risk - 5 times longer sea frontage.

Walls built on existing quay wall, interact with major services, businesses,

road/ rail network.

Raising of bascule bridge or road closure for temporary demountable at

Waveney road beyond year 50

5. Improve –

Bascule Bridge

barrier & walls

Recommended as the preferred option, due to:

Shorter length of floodwalls.

Single barrier in narrow river channel.

6. Improve –

Barriers at Third

Crossing & walls

Discounted, due to:

3 barriers, longer length of walls, interaction with quay walls, major

services

Disruption to quayside businesses during construction.

Raising of Bascule Bridge/road closure for temporary demountable

Waveney Road beyond year 50.

New control building required.

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Waveney Road

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Tidal barrier – before and after

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Tidal Barrier

•Mitre Gates

•Barrier width- consultation with ABP

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Station square- before and after

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Waveney Road- before and after

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Port Entrance- before and after

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Hamilton Road

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Hamilton Road – before and after

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Yacht Club and South Pier/Beach

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Royal Norfolk & Suffolk Yacht Club – before and after

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South Pier- before and after

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Now

Completion

Further activities and programme

Outline designs, May-Oct`17 OBC, Oct 17– April 18

Planning application for walls, Nov 17 –Jul 18 Legal & funding Agreements, Nov 17- Jul 18

TWAO, Marine license Sep 17- Jul 19

Flood Walls D&B, Nov17- Mar 19

Barrier D&B, Nov18- Dec 20

FBC, Aug 18- Nov18

SOC and consultation 2016/17

Thank You

Summary and next steps

Sharon Bleese, Project Manager