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Flood Risk Assessment Report

The Thames Coast River Flood Risk Assessment Report details river flooding risks associated with the Thames coast area. The report is part of the Thames Coast Project. It focuses on five communities in the area - Tararu, Te Puru, Waiomu/Pohue, Tapu and Coromandel town. You can use this page to view, print or copy sections of this report in PDF format.

On this page:

At the request of Waikato Regional Council and the Thames-Coromandel District Council, URS New Zealand Limited carried out a detailed assessment of the river flooding risks along the Thames Coast. This assessment:

  • estimates the risk to life from a 100 year flood event at Tararu, Tapu, Waiomu-Pohue, Te Puru and Coromandel Town against international guidelines
  • prioritises the risks to assist in the development of a flood management plan
  • determines the benefits from proposed risk mitigation works.

Flood Risk Assessment Report

The Thames Coast Project Flood Risk Assessment Report aims to address the following aspects in relation to five community towns on the Thames Coast (Tararu, Te Puru, Waiomu-Pohue, Tapu and Coromandel Town):

  • review background information
  • determine the risks in terms of risk to life and financial risk
  • assess the identified risks
  • recommend risk mitigation works to reduce the risk to life to more tolerable levels
  • evaluate the financial cost of the risk mitigation works.

Download the report

You can view, print or copy information from the Flood Risk Assessment Report in PDF format below.

Introduction

This section contains a table of contents, executive summary and presents a broad introduction to the report and explains its purpose.

Flood Risk Assessment Report - Introduction
(482 kb, 68 seconds to download, 56k modem) 

Background, methodology and risk assessment

These sections provide a brief discussion on the reasons why this report has been produced and summarise some of the previous flood management work that sets the context for the risk assessment. An explanation is also given on how the risk assessment was undertaken (methodology) along with details of the consequence (impact) analysis and risk calculation results.

Further information including a discussion on some of the key assumptions and input data for the risk modelling (together with a general discussion on risk criteria and how they apply to this study) are presented in appendices A, B C and D below.

Flood Risk Assessment Report - Background, methodology and risk assessment
(586 kb, 83 seconds to download, 56k modem) 

Aerial photographic maps

These maps show the level of flood risk for Tararu, Te Puru, Waiomu, Pohue, Tapu, and two areas of Coromandel town.

Flood Risk Assessment Report - Tararu
(1525 kb, 217 seconds to download, 56k modem)  

Flood Risk Assessment Report - Te Puru
(1135 kb, 162 seconds to download, 56k modem) 

Flood Risk Assessment Report - Waiomu
(1779 kb, 254 seconds to download, 56k modem)  

Flood Risk Assessment Report - Pohue
(1077 kb, 153 seconds to download, 56k modem)  

Flood Risk Assessment Report - Tapu
(1729 kb, 247 seconds to download, 56k modem)  

Flood Risk Assessment Report - Coromandel 1
(722 kb, 103 seconds to download, 56k modem)  

Flood Risk Assessment Report - Coromandel 2
(902 kb, 128 seconds to download, 56k modem) 

Risk assessment results, conclusions and recommendations, limitations and references

In these sections you can view the results of the risk assessment including the lives risk and financial risk profiles, individual risk estimates, comparison of the risk estimates with lives risk criteria and the costs of risk mitigation works. The Conclusions and Recommendations features a summary of the outcomes of the risk assessment project, while the Limitations section details any limitations which may affect these outcomes. A Reference section is also included here.

Flood Risk Assessment Report - Risk assessment results, conclusions and recommendations, limitations and references
(579 kb, 82 seconds to download, 56k modem)  

Acronymns, glossary and appendices A and B

These sections contain an explanation of any acronymns used in the Risk Assessment Report, a glossary of terms, Appendix A (risk assessment details) and Appendix B (lives risk model data).

Flood Risk Assessment Report - Acronyms and glossary, Appendix A and Appendix B
(1169 kb, 167 seconds to download, 56k modem)  

Appendices C and D

These sections contain Appendix C (asset risk model data) and Appendix D (details of risk treatment works).

Flood Risk Assessment Report - Appendix C and Appendix D
(918 kb, 131 seconds to download, 56k modem)  

More information

You can also check out our Thames Coast Project Summary Report, Natural Hazards river flooding maps, and Investigation Report in PDF format.

See our publications pages to order a printed copy of the Thames Coast Project Summary Report and Investigation Report.