TOKO MOUTH Community Response Plan Contents

Total Page:16

File Type:pdf, Size:1020Kb

TOKO MOUTH Community Response Plan Contents TOKO MOUTH Community Response Plan contents... Toko Mouth Area Map 1 Tsunami 15 Tsunami 15 Before a tsunami 15 Key Hazards 2 Tsunami warnings 16 Earthquake 2 Evacuation zone guide 16 Tsunami 2 Tsunami evacuation zones 17 Flood 3 During and after a tsunami 18 Wildfire 3 Major Storms / Snowstorms 3 Accident 3 Flood 19 Before, during and after 19 Flood zone maps 20 What Would You Do? 4 Stuck at home? 4 Can’t get home? 4 Major Storms / Have to evacuate? 5 Snowstorms 21 No power? 5 Before and when a warning is issued 21 No water? 6 After a storm 22 No phone or internet? 7 Snowstorms 22 Caring for pets and livestock 7 Wildfires 23 Emergency Planning 8 Before and during 23 3 simple steps 8 After a fire 24 Fire seasons 24 Household Emergency Planning 8 Roles and Responsibilities 25 Emergency Survival Kit 9 Emergency Contacts 26 Getaway kit 9 Household Stay Connected 10 Emergency Plan 27 Community Led Centre 10 Connect with your neighbours 10 Your Community Directory 10 Notes 28 In an Emergency 11 For Further Information 30 Stay in touch 11 Earthquake 12 Before and during an earthquake 12 After an earthquake 13 Post disaster building management 13 Local seismic fault lines 14 get ready... TOKO MOUTH Area Map TOKO MOUTH KAKA POINT 1 get ready... THE KEY HAZARDS IN TOKO MOUTH Earthquake // Tsunami // Flooding // Wildfire Major Storms // Snowstorms // Accident Earthquake New Zealand lies on the boundary of the Pacific and Australian tectonic plates. Most earthquakes occur at faults, which are breaks extending deep within the earth, caused by movements of these plates. There are thousands of earthquakes in New Zealand every year, but most of them are not felt because they are either small, or very deep within the earth. Each year there are about 150 – 200 quakes that are big enough to be felt. A large, damaging earthquake could occur at any time, and can be followed by aftershocks that continue for days, weeks or months. www.geonet.org.nz Tsunami Tsunami can be generated by either near or inland to family and friends away from the area. distant source earthquakes. A near source However, a near source tsunami will require earthquake you will feel, a distant source one immediate action. For a near source tsunami you will normally be notified of via media, your there may only be a few minutes warning. local coordinators, emergency services and you will usually have enough time to move 2 get ready... Flooding • the floods have risen very quickly Floods can cause injury and loss of life, damage • the floodwater contains debris, such as trees to property and infrastructure, loss of stock, and and sheets of corrugated iron. contamination of water and land. Getting ready before a flood strikes will help Floods are usually caused by continuous heavy rain reduce damage to your home and business and or thunderstorms. A flood becomes dangerous if: help you survive. www.water.orc.govt.nz www.envdata.es.govt.nz • the water is very deep or travelling very fast Wildfire FIRE DANGER TODAY Although there are many benefits to living in the country, rural property owners face a higher risk of HIGH E VE AT RY fire than city dwellers. R H DE I O GH If a fire starts it may not be detected as quickly and M emergency services take longer to respond because E X of greater travel distances. T R W E O M L For information on fire danger, fire season status E and requirements for fire permits visit www.fireandemergency.nz Major Storms / Snowstorms Major storms affect wide areas and can be Severe weather warnings are issued by accompanied by strong winds, heavy rain, the MetService and available through the thunder, lightning, tornadoes and snow. They can broadcast media, by email alerts, and online at cause damage to property, infrastructure, affect www.metservice.com crops and livestock and disrupt essential services. Road Transport Crashes Otago’s topography is predominantly flat to rolling of the region are highly susceptible to periodic however there are some mountainous areas closure due to natural hazards (snow, flooding, throughout the region making for challenging road landslip) all contribute to the challenges surrounding alignments and increased exposure to severe the management of transportation in our region. The weather events such as strong winds, ice, snowfall New Zealand Transport Agency (NZTA) operates and heavy rain events. Our popularity as a tourist the state highways and local authorities operate the destination and that the limited routes in and out public local roads. www.nzta.govt.nz 3 get ready... NEVER HAPPENS? HAPPENS What would you do? Stuck at home? In most emergencies, it’s best to stay in your own home if it is safe to do so. But that may mean being without power and water or any way to get supplies for three days or more. Do you have enough food? What about family members who need medication? Do you have enough food for pets to get through too? LIGHT UP KNOW YOUR NEIGHBOURS Your emergency supplies don’t have to be in a Get to know your neighbours. In an emergency, they kit, but you might have to find them in the dark. may need your help or you may need their help, and Make sure everyone knows where the torches you may be able to band together to get through. and batteries are. TOP TIP FRIDGE FIRST Keep up to date with emergency information If the power goes out, eat the food from your by listening to a radio (get one with fridge first, then your freezer, before you eat the batteries), and checking the Clutha District food in the cupboard or your emergency kit. Council and Emergency Management Otago websites and social media channels. Follow official emergency instructions. Can’t get home? In an emergency, public transport may not be able to operate, roads may be closed and streets or neighbourhoods might be blocked off. If you can’t take your normal route home, how will you get there? Who will you go with? Where will you meet up if your street is a no-go zone? SECOND MEETING PLACE TRAVEL TOGETHER Agree on a meeting place if you can’t get home. If you work away from home, find workmates It might be the school, a friend’s place, or with who live in your area. In an emergency, you whānau. could travel together. PACK A GETAWAY BAG Have a getaway bag at work or in your car, with TOP TIP walking shoes, warm clothes, some snack food Give the school or day care a list of three and a bottle of water. A torch, batteries and people who can pick the children up if you radio are useful too. can’t get there. 4 get ready... Have to evacuate? In an emergency, some houses, streets and neighbourhoods may not be safe to stay in and you may have to leave home in a hurry. If your street was evacuated where would you go? What would you take? What about pets? Do you have neighbours who might need your help? PACK A GETAWAY BAG DECIDE WHERE TO GO Have a getaway bag ready for everyone in your Decide where you will go (and make sure everyone family with warm clothes, a bottle of water, snacks, in your family knows, in case you’re not all together). copies of important documents and photo ID. Your evacuation place will probably be with friends Remember any medications you might need and or family, so make sure they know your plans. keep your first aid kit, torch, radio and batteries somewhere you can grab them in a hurry. TOP TIP CHECK YOUR ZONE If you have to leave home, take your pets with If you live in a potential flood area, make sure your you. If it’s not safe for you, it’s not safe for evacuation place is outside of the affected area. them. Make sure your evacuation place will See page 20 for map. take your pets or you have the contact details for kennels, catteries and pet friendly motels. No power? What would you do if the power was out for days? How will you see, cook, keep warm? Power cuts could affect EFTPOS and ATM machines, so make sure you have some cash at home, or enough supplies to see you through three days or more. LIGHT UP STOCK UP Make sure you have torches and batteries, Have a stock of food that doesn’t need to be either in your emergency kit or somewhere cooked (canned is good) or something to cook everyone can find them in the dark. your food on (bbq, camp stove). Don’t forget food for babies and pets. STAY TUNED IN Have a solar or battery powered radio so you can keep up with the latest news and alerts. Know which radio stations to tune in to for TOP TIP information during an emergency. Talk to your neighbours about what they’ll do if the power is out. You might find they FRIDGE FIRST have a gas bbq and you have enough food If the power goes out, eat the food from your to share (or the other way around). fridge first, then your freezer, before you eat the food in the cupboard or your emergency kit. 5 get ready... NEVER HAPPENS? HAPPENS What would you do? No Water? TOP TIP To be prepared in case of a Civil Defence You can also fill plastic ice cream containers emergency you will need enough water for at with water and keep them in the freezer.
Recommended publications
  • General Distribution and Characteristics of Active Faults and Folds in the Clutha and Dunedin City Districts, Otago
    General distribution and characteristics of active faults and folds in the Clutha and Dunedin City districts, Otago DJA Barrell GNS Science Consultancy Report 2020/88 April 2021 DISCLAIMER This report has been prepared by the Institute of Geological and Nuclear Sciences Limited (GNS Science) exclusively for and under contract to Otago Regional Council. Unless otherwise agreed in writing by GNS Science, GNS Science accepts no responsibility for any use of or reliance on any contents of this report by any person other than Otago Regional Council and shall not be liable to any person other than Otago Regional Council, on any ground, for any loss, damage or expense arising from such use or reliance. Use of Data: Date that GNS Science can use associated data: March 2021 BIBLIOGRAPHIC REFERENCE Barrell DJA. 2021. General distribution and characteristics of active faults and folds in the Clutha and Dunedin City districts, Otago. Dunedin (NZ): GNS Science. 71 p. Consultancy Report 2020/88. Project Number 900W4088 CONTENTS EXECUTIVE SUMMARY ...................................................................................................... IV 1.0 INTRODUCTION ........................................................................................................1 1.1 Background .....................................................................................................1 1.2 Scope and Purpose .........................................................................................5 2.0 INFORMATION SOURCES ........................................................................................7
    [Show full text]
  • Flood Risk Management Strategy for Milton and the Tokomairiro Plain
    Flood Risk Management Strategy for Milton and the Tokomairiro Plain Ajax Street (foreground), Milton June 1972 Ajax Street, Milton July 2007 Clutha District Council (CDC) P O Box 25, 1 Rosebank Terrace, Balclutha 9240 Phone 03 419 0200 Fax 03 418 3185 Freephone 0800 801 350 www.cluthadc.govt.nz Otago Regional Council (ORC) Private Bag 1954, 70 Stafford Street, Dunedin 9054 Phone 03 474 0827 Fax 03 479 0015 Freephone 0800 474 082 www.orc.govt.nz © Copyright for this publication is held by the Otago Regional Council. This publication may be reproduced in whole or in part, provided the source is fully and clearly acknowledged. ISBN 978-0-478-37670-8 Published July 2012 Prepared by: Michael Goldsmith, ORC, manager natural hazards, and Murray Brass, CDC, planning and environmental manager Table of Contents 1 Introduction ................................................................................................................................... 1 2 Scope ........................................................................................................................................... 1 2.1 Geographical ....................................................................................................................... 1 2.2 Risk ..................................................................................................................................... 1 2.3 Strategy development ......................................................................................................... 1 3 Environment setting
    [Show full text]
  • FT3 Otago Schist Structure and Exhumation
    Geological Society of New Zealand Inc 2003Annual Conference 1-4December University of Otago Dunedin Field Trip Guides Compiled by Simon Cox & Belinda Smith Lyttle LEADERS & AUTHORS David Barrell, Jennifer Bannister, Simon Cox, Ellen Cieraad, Dave Craw, Barry Douglas, Michael Findlay, Ewan Fordyce, Jane Forsyth, Daphne Lee, Jon Lindqvist, Nicola Litchfield, Phillip Maxwell, Nick Mortimer, Tony Reay, Rick Sibson, Michael Palin, Richard Price, GRD Macraes WITH SUPPORT FROM Adrien Dever,Beverley Elliott, Phil Glassey, Elly Lang, Candace Martin, Richard Norris, Stephen Read, Janice Stenning, Lorraine Paterson, Damian Walls, John Williams. Geological Society of New Zealand Miscellaneous Publication 116B ISBN 0-908678-97-5 GEOLOGICAL SOCIETY OF NEW ZEALAND ANNUAL CONFERENCE 2003 FIELD TRIP 3 OTAGO SCHIST STRUCTURE AND EXHUMATION Nick Mortimer and Rick Sibson INTRODUCTION With the exception of stop 1, the entire trip (Fig. 1) can be followed on NZMS262 topographic maps H45 (Clarendon) and I45 (Taieri Mouth), and the 1:50 000 geological map of Bishop (1994). The 1: 250 000 geological map of Bishop & Turnbull (1996) is a useful for the wider regional context. Tide on the day is optimal: high at 1020hrs, low at 1630hrs. Watch for large waves, seals and sea-lions on the beaches. The weather will either be appalling or excellent. The four aims of the trip are to: 1) examine penetrative and non-penetrative (ductile and brittle) meso-scale structures of the Otago Schist in superb 3D coastal exposures 2) consider the paleoseismological implications of accretionary wedge melange structures 3) review macro- and meso-structural evidence for exhumation of the Otago Schist 4) provide an overview of local East Otago geology and tectonics En route will we cross traces of the Holocene-active Akatore Fault.
    [Show full text]
  • Schedule 6.1 Reserve and Conservation Land
    6. SCHEDULES SCHEDULE 6.1 RESERVE AND CONSERVATION LAND The reserves and areas of conservation land listed here are held under either the Conservation Act, the Reserves Act or some other Act for conservation purposes and are identified (rather than designated) as green on the Planning Maps. Section 3.5 Heritage and Rule RRA.13 applies to these areas. Where reserve or conservation area status is revoked the underlying Resource Area noted in the schedule applies. The schedule attempts to identify conservation areas and all reserves and the status of those reserves within the District as existed at the 1 December 1995. Not all of the Districts reserves may be shown on the planning maps. Note: Land described as “Conservation Park”, “Stewardship” “Covenant” or “State Forest Park” is land held for conservation purposes under the Conservation Act 1987 or some other similar Act concerned with the conservation of natural and physical resources. “Stewardship” area is defined by the Conservation Act 1987 as follows; “means a conservation area that is not: (a) A marginal strip; or (b) A watercourse area; or (c) Land held under the Conservation Act for one or more of the purposes described in section 18(1) of the Conservation Act; or (d) Land in respect of which an interest is held under this Act for one or more of the purposes described in section 18(1) of the Conservation Act. “Conservation Area” means any land or foreshore that is: (a) Land or foreshore for the time being held under the Conservation Act for conservation purposes; or (b) Land in respect of which an interest is held under Conservation Act for conservation purposes.
    [Show full text]
  • Clutha Destination Strategy (2020-2030)
    Clutha Destination Strategy (2020-2030) “Managing Growth of Respectful Tourism” (Adopted 6 August 2020) For Clutha Development Prepared by Destination Planning Ltd 1 Contents Clutha Destination Strategy (2019) .......................................................................................................................... 1 “Managing Growth of Respectful Tourism” ............................................................................................................ 1 Acronyms ................................................................................................................................................................ 6 Summary Destination Strategy ................................................................................................................................. 7 SWOT ....................................................................................................................................................................... 7 Vision ....................................................................................................................................................................... 8 Goals ....................................................................................................................................................................... 8 Objectives .............................................................................................................................................................. 8 Key Performance Indicators ................................................................................................................................
    [Show full text]
  • CAMPING in CLUTHA • Fur Seals and Sea Lions - the Recommended Safe Viewing Reporting Problems Distance Is 20M
    Respect our wildlife Clutha’s coastal wildlife species provide fantastic viewing opportunities, but please respect their space. CAMPING IN CLUTHA • Fur seals and sea lions - The recommended safe viewing Reporting Problems distance is 20m. • Yellow-eyed penguins - Stay well away and out of their sight. If you see people camping in non-permitted areas, or Do not approach or follow them. causing problems contact the Clutha District Council on It is an offence to disturb or harass wildlife. Where available, 0800 801 350 use the viewing hides provided. Look for brochures that provide more information about the wildlife you may encounter. Please report any parking hazards, or vehicles behaving recklessly on beaches to the New Zealand Police at *555 or 03 418 0203. For concerns related to wildlife and conservation phone the Department of Conservation: • General conservation matters – 03 477 0677 • Wildlife emergencies – 0800 362 468 For emergency services phone 111 Bikes on board? The Beaumont-Lawrence section of the Clutha Gold cycling and walking trail will open in 2013 and will be accessible to campers. Going fishing? Trout and salmon are sure to be biting in the Clutha, Waipahi, Pomahaka, Tuapeka and Catlins Rivers. Other notable freshwater fishing spots include the Owaka, Waitahuna, Tokomairiro and Leithen Burn rivers. Fishing licences are available from your local information centre. Alternatively, try surf casting at the various beaches down the coast. Surf’s up! Some of New Zealand’s best kept surfing secrets are in Clutha Country, including Toko Mouth, Kaka Point, and Cannibal and Purakaunui bays. Motorists should take extra caution on the road to Cannibal Bay which is gravel and extremely narrow in places.
    [Show full text]
  • Clutha District Council
    MEETING OF THE Clutha District Council Thursday, 18 February 2021 Commencing at 1.30pm At the Council Chambers 1 Rosebank Terrace BALCLUTHA CLUTHA DISTRICT COUNCIL Notice is hereby given that a Meeting of the Clutha District Council will be held at the Council Chambers, 1 Rosebank Terrace, Balclutha on Thursday, 18 February 2021, commencing at 1.30pm. Steve Hill CHIEF EXECUTIVE OFFICER Committee Members Mayor: Bryan Cadogan Councillor Dane Catherwood Councillor Alison Ludemann Councillor Stewart Cowie Councillor Ken Payne Councillor Wayne Felts Councillor Carol Sutherland Councillor Gaynor Finch Councillor Bruce Vollweiler Councillor Mel Foster Councillor Jo-Anne Thomson Councillor Bruce Graham Councillor Selwyn Wilkinson Councillor John Herbert CLUTHA DISTRICT COUNCIL Thursday, 18 February 2021 APOLOGIES DECLARATIONS OF INTEREST PUBLIC FORUM DEPUTATIONS Page Title Item # Clutha Development – Appointment of elected member (For Council’s Decision) 1 5 Report seeking Council’s decision on an election of an elected member to sit at meetings of the Executive of Clutha Development as a non-voting member. Taieri Mouth Private Road Naming (For Council’s Decision) 2 6 Report seeking Council’s decision on a road name for the private road at Taieri Mouth. Notification of Weight and Speed Limits on Bridges (For Council’s Decision) 3 14 Report seeking Council to accept the February 2021 Notification of Weight and Speed Limits on Bridges Certificate and that the public notification process be initiated. Lead Testing in Water (For Council’s Decision) 4 17 Report seeking Council to make a decision whether to test for Lead in Council water supplies. Otago Southland Councils Water Services Bill Submission (For Council’s Confirmation) 5 18 Report seeking council to approve the Otago Southland Council’s Water Services Bill Submission.
    [Show full text]
  • Freedom Camping Brochure.Pdf
    What do you mean by? Freedom camping Freedom camping in the Clutha District refers to camping on public land in a self-contained vehicle, within 200 metres of a formed road, other motor vehicle accessible CAMPING area, or the mean low-water springs line of the sea. Some public land is excluded however. IN CLUTHA Freedom camping does not include the following activities: • Temporary and short-term parking of a motor vehicle • Recreational activities commonly known as day - trip excursions • Resting or sleeping at the roadside in a caravan or motor vehicle to avoid driver fatigue. Self-contained Vehicles must comply with New Zealand Standard 5465:2001 and display a current self-containment warrant. You need to be able to live in it for 3 days without getting more water or dumping waste. The self - contained vehicle must have: • A toilet • Fresh water storage For further information on attractions, activities • Waste water storage accommodation and eating options visit: • A rubbish bin with a lid. Clutha i-Site Visitor Centre If your vehicle is not fully self - contained, then please 1 John Street, Balclutha stay at a camping ground if you wish to camp in the Ph: 03 418 0388 Clutha District. E-mail: [email protected] Open Monday-Friday 8.30am to 5.00pm Sat/Sun/Public Holidays in Summer 9.30am - 3.30pm, in Winter 10.00am to 2.00pm. ANZAC Day 1.00pm to 3.00pm, Christmas Day - closed. There is also information available from the other information and service centres across the district. www.cluthanz.com For more information visit www.cluthanz.com REMEMBER - when in New Zealand, please drive on the left! Camping in Clutha If freedom camping we ask that you please: Respect our wildlife • Don’t camp in town centres or areas where Clutha Clutha’s coastal wildlife species provide fantastic viewing District Council “No Camping” signs are displayed.
    [Show full text]
  • Community Vulnerability to Elevated Sea Level and Coastal Tsunami Events in Otago
    Community vulnerability to elevated sea level and coastal tsunami events in Otago Otago Regional Council Private Bag 1954, 70 Stafford St, Dunedin 9054 Phone 03 474 0827 Fax 03 479 0015 Freephone 0800 474 082 www.orc.govt.nz © Copyright for this publication is held by the Otago Regional Council. This publication may be reproduced in whole or in part provided the source is fully and clearly acknowledged. ISBN: 978 0 478 37630 2 Published July 2012 Prepared by Michael Goldsmith, Manager Natural Hazards, Otago Regional Council Community vulnerability to elevated sea level and coastal tsunami events in Otago i Executive summary The Otago coastline extends 480km from Chaslands in the south to the mouth of the Waitaki River in the north. Approximately 124,000 people (64% of Otago’s population) live within five kilometres of this coastline. A number of the communities situated along the coast have a level of hazard exposure to elevated sea level (or storm surge) and tsunami events. This report assesses the vulnerability (rather than the risk) 1 of these coastal communities to these hazards. The report draws on tsunami and storm surge modelling undertaken by National Institute of Water and Atmosphere (NIWA) for the Otago Regional Council (ORC) in 2007/08, coastal topography data and local knowledge of each community. This information has been used to assess how people and the communities in which they live would be affected during credible, high magnitude tsunami and elevated sea level events. It is intended that this information will: • increase community awareness of elevated sea level and tsunami hazard • inform decision making on the development of warning systems and evacuation plans • assist with the selection of land-use planning and development controls • increase the resilience of infrastructure and utilities (‘lifelines’).
    [Show full text]
  • Clutha District Section Landscape Character Unit ONF to Be Assessed
    Natural Features and Natural Landscapes - Clutha District Section Landscape character unit ONF to be assessed CL1. Henley CL2. Taieri River Gorge CL2/F1. Lower Taieri River Gorge CL3. Taieri Mouth CL3/F1. Moturata Island CL3/F2. Taieri Beach Faulted Coastal Plain CL4. Akatore Coast CL5. Akatore wetland CL6. Toko Mouth CL6/F1. Cooks Head Rock CL6/F2. Chrystalls Beach CL7. Tokomairiro wetland CL8. Wangaloa CL9. Clutha Mouth CL10. Kaka Point CL11. Sandy Bay CL11/F1. Nugget Point CL12. Cannibal / Surat Bay CL12/F1. False Islet CL13. Catlins Lake CL14. Jacks Bay / Penguin Bay CL14/F1. Jacks Blowhole CL14/F2. Tuhawaiki Island CL15. Hinahina CL16. Long Point CL16/F1. Cosgrove Island CL17. Tahakopa Bay CL18. Tahakopa River CL19. Tautuku CL19/F1. Rainbow Isles CL19/F2. Lake Wilkie CL20. Waipati CL20/F1. Frances Pillars CL20/F2. Cathedral Caves CL20/F3. Kinakina Island CL21. Wallace Head 1 CL1. Henley Character Description This landscape unit extends along the Taieri and Waipori Rivers as far as the marine influence is significant, and is part of a much wider lower Taieri Plains landscape. The rivers are constrained within stop banks and dairy farming land use has replaced the large wetlands that would have once covered this area. Roads, bridges and scattered buildings are also parts of the riverside landscape. Values Assessment Criteria Comments Rating Natural science factors The Waipori Boot Swamp is habitat for rare or threatened Medium / legibility / species – i.e. Australasian Bittern and Marsh Crake. - low expressiveness Natural landscape
    [Show full text]
  • Assessment of Liquefaction Hazards in the Queenstown Lakes, Central Otago, Clutha and Waitaki Districts of the Otago Region
    Assessment of liquefaction hazards in the Queenstown Lakes, Central Otago, Clutha and Waitaki districts of the Otago Region DJA Barrell GNS Science Consultancy Report 2018/67 June 2019 DISCLAIMER This report has been prepared by the Institute of Geological and Nuclear Sciences Limited (GNS Science) exclusively for and under contract to Otago Regional Council. Unless otherwise agreed in writing by GNS Science, GNS Science accepts no responsibility for any use of or reliance on any contents of this report by any person other than Otago Regional Council and shall not be liable to any person other than Otago Regional Council, on any ground, for any loss, damage or expense arising from such use or reliance. Use of Data: Date that GNS Science can use associated data: May 2019 BIBLIOGRAPHIC REFERENCE Barrell DJA. 2019. Assessment of liquefaction hazards in the Queenstown Lakes, Central Otago, Clutha and Waitaki districts of the Otago Region. Lower Hutt (NZ): GNS Science. 99 p. Consultancy Report 2018/67. Project Number 440W1514 2019 CONTENTS EXECUTIVE SUMMARY ....................................................................................................... V 1.0 INTRODUCTION ........................................................................................................1 1.1 Overview .........................................................................................................1 1.2 Scope of Work ................................................................................................. 1 1.3 Liquefaction Hazard Assessment
    [Show full text]
  • Coastal Morphology of South Otago: Nugget Point to Chrystalls Beach
    Coastal morphology of South Otago: Nugget Point to Chrystalls Beach July 2014 Executive summary This report assesses changes in shoreline position between Nugget Point and Chrystalls Beach between 1946 and 2012. A survey of the offshore bathymetry and onshore surface profiles was completed in February and April 2013 to set a baseline for future coastal monitoring. An analysis of recent and historic changes in the onshore and offshore coastal environment between Nugget Point and Chrystalls Beach is provided. The analysis contained in this report is based on terrestrial cross -section and bathymetric data collected in early 2013, LiDAR data collected in 2004 and 2009, and aerial photographs collected in 1946, 1972, 1997 and 2006. This report compares these data sources, where available, to allow comparisons of changes in the coastal zone to be quantified. Between Kaka Point and the Koau Mouth of the Clutha River/Mata-Au, the vegetated foredune retreated at an average rate of 3.3m/yr between 1946 and 2012. The rate of retreat has increased during that period, and at the current rate (observed between 2006 and 2012), floodbanks, which form part of the Lower Clutha Flood Protection and Drainage Scheme, could be affected by coastal erosion in less than three decades. The average rate of erosion between the Koau and Matau mouths of the Clutha River/Mata-Au between 1946 and 2012 was 0.2m/yr, with net erosion occurring at the south-western end of this beach, and net accretion towards the northeast. At Measly and Chrystalls beaches (to the south and north of Toko Mouth), average rates of accretion between 1946 and 2006 were 2.3m/yr and 0.8m/yr, respectively.
    [Show full text]