Territory Stories

NT Remote Communities Storm Tide Study and Inundation Mapping

Details:

Title

NT Remote Communities Storm Tide Study and Inundation Mapping

Creator

Systems Engineering Australia Pty Ltd

Issued by

Northern Territory. Department of Land Resource Management

Collection

E-Publications; E-Books; PublicationNT; J1507-PR001B

Date

2016-07-01

Description

Made available via the Publications (Legal Deposit) Act 2004 (NT).; 'This report documents tropical cyclone (TC) storm tide hazard analyses that will provide the basis for reliable risk analyses of major remote towns and indigenous communities on the West Coast, Arnhem Land and Tiwi Islands.' - Introduction

Notes

This Storm Surge Study Report was produced with funding provided by the Northern Territory and Australian Governments through the Natural Disaster Resilience Program. 'Numerical Modelling and Risk Assessment' - on cover.; Made available via the Publications (Legal Deposit) Act 2004 (NT).

Table of contents

Executive summary -- Introduction -- The study localities -- Methodology to assess the storm tide hazard -- Simulation model results -- Conclusion -- References -- List of Appendices A-C.

Language

English

Subject

Storm surges; Storm surges; Cyclones; Maps; Mathematical models

Publisher name

Northern Territory Government

Place of publication

Palmerston

Series

J1507-PR001B

Format

vi, 62, 4,3,8 pages : colour illustrations, colour maps ; 30 cm.

File type

application/pdf

Use

Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government

License

https://creativecommons.org/licenses/by/4.0/

Parent handle

https://hdl.handle.net/10070/267238

Citation address

https://hdl.handle.net/10070/443309

Page content

NT Department of Land Resource Management NT Remote Communities Storm Tide Study and Inundation Mapping J1507-PR001B 7 Systems Engineering Australia Pty Ltd July 2016 2. The Study Localities This Section briefly summarises relevant characteristics of each of the Study communities (from GHD-SEA 2015). Refer Figure 1-1 for assistance in locating the Study locations. 2.1 West Coast Wadeye (14.24S 129.52E) This is a mainly indigenous community of approximately 2200 persons (RAHC 2010) and 300 residences, serviced by an all-weather airstrip, located at the base of Port Keats (refer Figure 2-1) with fronting mangroves. It is situated about 9 km inland from the nearby Timor Sea coastline. A coastal barge from Darwin services the town, which is often isolated by road during the wet season. Much of the community is at an elevation above 15 m AHD but some southern areas may be as low as 10 m AHD. The estimated tidal range is 8.8 m, with present HAT at 4.1 m AHD. The regional bathymetry (refer Section 3.4) is relatively shallow along the coast, typically less than 25 m up to 50 km offshore and becomes much more shallow southwards towards the mouth of the Victoria River. These features are conducive to storm surge generation. 2.2 Tiwi Islands Wurrumiyanga (11.76S 130.64E) Until 2010 this community on the south-east corner of Bathurst Island was known as Nguiu. It fronts Shoal Bay on Beagle Gulf and is at the entrance to the narrow Apsley Strait that separates Bathurst and Melville Islands (refer Figure 2-2). With a mainly indigenous population of about 16001 it is serviced by an all-weather airstrip and barge and ferry facilities. The majority of the town is at an elevation of 6 m to 8 m AHD, with the northern part below 5 m AHD. The estimated tidal range is 7.3 m, with present HAT at 3.5 m AHD. The village of Paru on Melville Island is located immediately across Apsley Strait and serviced by barge and ferry. It has about 10 residences located near to 10 m AHD. The regional bathymetry is relatively shallow along the coast and there may be breaking wave setup impacts along the shoreline where there is no mangrove coverage. 1 http://www.remoterecruitment.nt.gov.au/communities/Community%20profile%20%20N GUIU.pdf http://www.remoterecruitment.nt.gov.au/communities/Community%20profile%20%20NGUIU.pdf http://www.remoterecruitment.nt.gov.au/communities/Community%20profile%20%20NGUIU.pdf