Riverine and flash flooding information for communities around puthimiluna/ Great Oyster Bay on Tasmania’s East Coast

Version 1.0 October 2025

To see the maps in more detail, lihat Peta Banjir Strategik Tasmania.

Flooding from intense rainfall can cut the Tasman Highway in multiple places. This flooding could be

• deep
• impassable, and
• potentially dangerous. 

The Highway may also be cut in places to the north and south of this plan.  Inland alternative routes are

• also likely to be cut, and
• can be more isolated and dangerous.

Flood can isolate communities and properties along the coast for a short time. Waterways in the area are short, so flooding is likely to be for hours rather than days after rain stops.

The maps in this guide show the level of flooding that has a 1% chance of happening any year. You are likely to experience flooding such as that shown in the maps in your lifetime. Tasmanians need to prepare for flood events that may not happen often as well as the minor flooding they may have experienced.

Even if your home is not flooded you should prepare for

• isolation
• potential power and telecommunications outages.

The Tasman Highway may be cut in multiple places during a major flood event, depending on where the rain falls and how heavy it is. Travel in the area is likely to be difficult or impossible until roads are clear.

Floodwaters will likely isolate many areas along the East coast for a few hours at the most.  If you are safe at home or elsewhere, it is usually best you stay where you are until the flooding subsides. If you need to evacuate, you should leave early, before flood waters rise. Flood waters are likely to disperse quickly, once rain stops.

Check TasALERT.com or listen to ABC local radio for warnings and advice.

• Bicheno area: ABC Northern Tasmania 89.7 FM or 91.7 FM
• Swansea area: ABC Radio Hobart106.1FM or 936 AM
• Triabunna area: ABC Radio Hobart 90.5FM or 936 AM

Note areas outside township areas may lack mobile internet access and local radio coverage

Adakah anda berisiko banjir?

East Coast Lows can often bring intense rain that sometimes leads to flooding in areas along Tasmania’s East Coast.  Significant local flooding events happened in 2016, 2011, 1974, 1969, 1923, 1922, 1914, 1911, 1876, 1972 and 1870

Apa yang patut saya buat?

• Check the map to see whether your home or business could flood.
• Nilai rumah atau perniagaan anda dan bersiap sedia untuk meminimumkan kemungkinan kerosakan banjir.
• Periksa sama ada anda dapat sampai ke rumah, tempat kerja atau sekolah dengan selamat semasa banjir.
• Prepare a Home Emergency Plan. See Bersedia untuk Kecemasan – A guide for individuals and households to prepare for emergencies . 
• If you may be isolated and you must have access to services, you may need to evacuate early.

Bureau of Meteorology Forecasts, Warnings, and Observations

The Bureau issues a Flood Warning, Severe Weather Warning and/or Thunderstorm Warning for heavy rainfall that may lead to flash flooding whenever heavy rain is expected in an area. The time between the warning andheavy rain occurring can vary from an hour to 24 hours or more.

Whenever rain that may lead to flooding along the Swan River or Meredith River is expected, the Bureau will issue a Flood Watch – a “heads up” early advice of forecast weather that may lead to flooding. There are no formal warning levels for waterways in the area as the river systems are too short.

Rainfall Observations at places such as

• Bicheno
• Friendly Beaches
• Swansea, and
• Lake Leake

can indicate possible flood risks. Given the very short warning times, it is best to act on the BoM warnings rather than wait for any flood alerts during rainfall.

The Mt Koonya Radar is useful to be aware in real-time where heavy rain is falling for the areas south of Swansea.  Radar Rainfall estimates can also fill in gaps in areas where there are no rainfall stations. The North East of Tasmania is not well covered by BoM radar.

Fahami amaran dan maklumat penting

Sentiasa peka dengan apa yang berlaku di sekeliling anda. Periksa ramalan, pemerhatian dan amaran dengan kerap.

• TasALERT.com
• stesen radio ABC tempatan anda atau
• yang Biro Meteorologi laman web.

For more information see www.ses.tas.gov.au/warnings/ .

Flood levels

While no two floods are the same, the following describes what you can expect at different flood levels around the area. Even if your property is not flooded, you need to think about access. Different levels of rainfall can cause flooding depending on its

• intensity
• duration
• how wet the ground is beforehand, and
• where the rain falls.

Minor flooding can impact low-lying agricultural land. Livestock and equipment near waterways should be moved. There may be low level flooding across some roads, particularly (from North to South):

• Rosendale Road access to Apsley Gorge, parts of the Campground/ picnic area
• Tasman Highway
  • South of the Lilla Villa Bridge
  • North of Lake Leake Road
  • South of Springvale Road
  • North of Meredith River
  • Near Sandy Creek, Mayfield Beach
  • Near Trehawke Creek (Buxton River area)
  • North of Lisdillon Rivulet
  • South of Little Swanport River
  • Near Ravensdale Rivulet
• Lake Leake Road near Whelans Bridge
• Coles Bay Road East of the Tasman Highway junction (Apsley River)
• Glen Gala Road, Cranbrook
• Grange Road, Cranbook
• Some properties around Llandaff may flood, along with nearby property on Coles Bay Road. There are several low-lying properties along the Tasman Highway that are flood prone.

Banjir besar

Rainfall of about the following amounts will cause major flooding in the area.  This level of rainfall has a 2% chance of happening any given year (based on rainfall records at Swansea up to 2016).

• 35mm in 1 hour
• 45mm over 2 hours
• 54mm over 3 hours
• 77mm over 6 hours
• 113mm over 12 hours

Key transport routes most likely to flood include (from north to south):

• Tasman Highway, many places, but particularly
  • Between Bicheno and Apslawn
  • Extended areas around Cranbrook
  • Near the Cygnet River, south of Cranbrook
  • North of Lake Leake Rd
  • Around the Wye River, south of Crossins Road
  • North of Meredith River
  • Near the mouth of Saltwater Creek, Swansea
  • Near Stony River, south of Swansea
  • Around Buxton River
  • South of Little Swanport River and north of Ravensdale
  • North and south of Triabunna.
• Rosedale Road – access to Apsley Gorge
• Coles Bay Road
  • Near the junction with Tasman Highway
  • Around the Friendly Beaches Road junction
  • Near Swanwick
• Old Coach Road river crossings
• Glen Gala Road, Cranbrook, extended areas
• Lake Leake Rd near Whelans Bridge
• Crossins Road
• Grange Road several places
• Swan River Road access to Dolphin Sands
• Esplanade area, Swansea, and some areas around Maria Road
• Freestone Point Road near the intersection with Tasman Highway

Aside from key routes prone to flooding, properties and some campsites in the area that are prone to flooding.  Of most concern (from North to South):

• Apsley Gorge waterhole access and campground
• Landaff riverside properties and some nearby properties on Coles Bay Rd
• Low lying areas northern parts of Swanwick, which may also be impacted by coastal inundation
• Cranbrook properties near Glen Gala Rd, Grange Rd, Springs Road and Tasman Highway
• At Swansea, Saltwater Creek may flood
  • Maria St
  • several properties on River Street, and
  • the Esplanade area, especially at high tide.
• At Triabunna, the Esplanade area. This area is also prone to coastal inundation.

Storm water runoff (overland flow) can affect other properties after intense rainfall.

Ketahui risiko anda, bersiap sedia, kurangkan risiko di mana boleh, berhubung dengan orang lain, sentiasa berwaspada dan bertindak selamat.

Sebelum banjir

Ketahui risiko anda

Banjir sering berlaku di Tasmania dan boleh menyebabkan kerosakan yang meluas dan ketara. Dalam tempoh 200 tahun kebelakangan ini, terdapat 78 kematian berkaitan banjir di Tasmania. Panduan ini adalah untuk membantu anda memahami risiko banjir di kawasan anda.

2. Sediakan rumah anda

Miliki pelan kecemasan yang meliputi taufan dan banjir

Berfikir tentang apa yang akan anda lakukan semasa ribut atau banjir bermakna anda lebih bersedia dan semua orang lebih selamat. Miliki pelan kecemasan yang difahami oleh semua orang dalam isi rumah anda. Terdapat senarai semak untuk membantu anda memikirkan pelan anda – lihat Bersedia untuk Kecemasan – Panduan untuk individu dan isi rumah bersiap sedia menghadapi kecemasan. 

Periksa pelan anda dengan kerap dan uji ia dengan setiap ahli isi rumah memikirkan senario banjir yang mungkin menjejaskan isi rumah anda.

Sediakan Kit Kecemasan

Sedia untuk Pergi

• Radio berkuasa bateri dan lampu suluh, bateri ganti
• Maklumat penting, seperti pelan kecemasan anda
• Senarai nombor kecemasan
• Makanan dan air
• Peti pertolongan cemas
• Sarung tangan getah atau kulit asli yang kukuh

Bungkus apabila perlu

• Pakaian hangat, kasut yang kukuh atau but
• Ubat-ubatan, cermin mata atau barangan penting lain
• Telefon bimbit dan pengecas telefon
• Makanan haiwan peliharaan dan apa sahaja yang mereka perlukan
• Foto dan kenang-kenangan istimewa
• Money
• Dokumen penting, contohnya
  • kertas insurans
  • passports and
  • Sijil kelahiran

Uji bateri dalam radio dan lampu suluh secara berkala.

3. Reduce your risk from flooding where you can

• Pertimbangkan tentang ribut, banjir dan bahaya lain semasa membeli, menyelenggara atau membangunkan hartanah.
• Potong atau alih pokok dan dahan yang menjulur ke atas rumah, perniagaan anda atau berdekatan talian elektrik di kawasan anda.
• Pastikan saluran air dan perparitan anda bersih.

4. Connect with others

Kenali jiran anda dan libatkan diri dalam komuniti anda. Komuniti yang saling berhubung adalah komuniti yang lebih selamat dan lebih berdaya tahan semasa kecemasan dan dapat membantu semua orang pulih dengan lebih baik selepas itu. Periksa sama ada keluarga dan jiran selamat dan sedar tentang apa yang berlaku.

Semasa

5. Keep up to date

Sentiasa peka dengan apa yang berlaku di sekeliling anda. Periksa ramalan, pemerhatian dan amaran dengan kerap. 

• TasALERT 
• stesen radio ABC tempatan anda atau
• yang Biro Meteorologi laman web.

6. Act Safe

• Mengawasi kanak-kanak.
• Bersiap sedia untuk kemungkinan gangguan bekalan elektrik, air atau internet.
• Pastikan peti kecemasan anda bersedia untuk digunakan.
• Jauhi kawasan yang dinaiki air seperti longkang. JANGAN SESEKALI berjalan, bermain, menunggang atau memandu dalam air banjir. Anda tidak selalu dapat melihat apa yang ada di bawah air atau betapa dalamnya atau derasnya air itu. Sangat mudah untuk dihanyutkan dan lemas dalam air yang bergerak pantas sedalam 20sm. Air banjir boleh berbahaya.

Bila rumah anda mungkin dinaiki air

• Letakkan barangan isi rumah di tempat yang tinggi untuk meminimumkan kerosakan yang mungkin berlaku.
• Padamkan bekalan elektrik dan gas jika selamat untuk berbuat demikian. 
• Cara yang baik untuk menghentikan aliran kumbahan masuk semula ke rumah anda ialah dengan meletakkan beg pasir di dalam beg plastik dan menggunakannya untuk menyumbat tandas serta menutup longkang dan singki.
• Pergi selagi anda boleh keluar dengan selamat.

Jika anda perlu berpindah

• Ikuti nasihat dari SES / Polis Tasmania.  
• Ambil kit kecemasan anda. 
• Pergi ke tempat rakan atau keluarga yang lebih selamat atau pusat pemindahan. 
• Beritahu orang lain ke mana anda telah pergi.

Jaga haiwan peliharaan anda

Anda bertanggungjawab terhadap haiwan anda semasa kecemasan. Sekiranya anda mempunyai haiwan peliharaan dan haiwan lain, anda akan mengambil masa lebih lama untuk berpindah sekiranya berlaku banjir atau kecemasan lain. Pindahkan ternakan dari kawasan yang terdedah kepada banjir **jauh sebelum** paras air banjir mungkin naik. Untuk maklumat lanjut, sila lihat

• Panduan RSPCA untuk persediaan haiwan dalam kecemasan
• Huon Valley Council’s advice on preparing an emergency pet plan
• yang Primary producer farm flood readiness toolkit.

Avoid travelling during storms and after storms

• Jangan melancong. Pelancong melambatkan perkhidmatan kecemasan dan menyebabkan kemalangan.
• Berhati-hatilah terhadap bahaya seperti
  • air di atas jalan
  • talian elektrik rosak
  • tanah runtuh
  • jalan rosak
  • pokok tumbang atau bumbung besi.
• Jangan memandu melalui air banjir. Kebanyakan kematian dan penyelamatan dalam banjir disebabkan oleh orang yang memandu melalui air banjir.
• Pandu perlahan dan pasang lampu hadapan anda di jalan yang tidak dinaiki banjir.

Selepas

• Terus ikuti perkembangan terkini dari ABC Local Radio, pembukaan semula jalan, mesyuarat komuniti, dll.
• Jika anda meninggalkan rumah anda, jangan pulang ke rumah sehingga SES atau Polis Tasmania memberitahu anda selamat untuk berbuat demikian.
• Berhati-hatilah terhadap bahaya jalan raya, seperti lumpur atau serpihan di jalan, jalan/jambatan yang rosak dan kru yang sedang bekerja membersihkan dan membaiki.

Jika rumah anda rosak

• Tinggal di aras tanah semasa memeriksa kerosakan. Berhati-hatilah dengan pokok tumbang, kaca pecah, bumbung yang longgar atau bahaya lain.
• Pakai but kuat, sarung tangan dan pakaian pelindung. 
• Gunakan lampu suluh, jangan gunakan mancis atau lilin di dalam bangunan yang dinaiki banjir. 
• Rebus semua air minuman sehingga anda diberitahu air paip selamat semula.
• Jangan hidupkan bekalan elektrik atau gas sehingga ia diuji oleh juruelektrik atau pemasang gas bertauliah bagi memastikan keselamatan.
• Jika rumah anda rosak dan anda perlu menginap di tempat lain, bawa bersama kit kecemasan dan haiwan peliharaan anda
• Ambil gambar kerosakan jika selamat untuk anda berbuat demikian dan hubungi syarikat insurans anda.
• Mengawasi kanak-kanak.
• Periksa jiran dalam keadaan baik.

Untuk maklumat lanjut, sila layari www.ses.tas.gov.au .

Kekal dimaklumkan dan maklumat lanjut

Amaran semasa TasALERT.com

Biro Meteorologi (BoM)

Penyiar Kecemasan ABC 936AM

TASSES Social Media facebook.com/sestasmania

Persediaan Menghadapi Kecemasan Banjir ses.tas.gov.au/plan-prepare/flood 

Glamorgan Spring Bay Council                gsbc.tas.gov.au                                 03 6256 4777

Perkhidmatan Geganti Kebangsaan (NRS) relayservice.gov.au

Penafian

The maps show potential flooding risks from consistent levels of rainfall across catchments, such as a 1% Annual Exceedance Probability (AEP).  In flooding events, rainfall is likely to be more inconsistent across a catchment, so these flood maps should be considered indicative only.  The mapped areas of flood risk show higher probability of inundation. Other areas have lower probability of flooding, but in severe and rare events (rarer than 1% AEP), other lower areas may be also at risk of inundation.

Maklumat dalam panduan ini adalah terkini pada tarikh penerbitannya. Walaupun segala usaha telah dibuat untuk memastikan kesahihan dan ketepatan data yang dibentangkan, Perkhidmatan Kecemasan Negeri tidak bertanggungjawab ke atas kesilapan atau ketinggalan data. Sila lihat piawaian Hak Cipta dan Pernyataan Penafian Kerajaan Tasmania untuk maklumat lanjut.