Riverine and flash flooding information for communities between Montrose (Islet Rivulet) and Black Snake Rivulet (Granton), including Glenlusk, Rosetta, Chigwell, Berriedale and Austins Ferry

See also the nearby flood guide for Glenorchy city and suburb (south of Islet Rivulet)

Version 1.0 November 2025

To see map information in detail, go to www.gcc.tas.gov.au/residents/your-home/floods-and-stormwater/

Understand your flood risk and get ready

If there is a severe storm bringing heavy rainfall across the Wellington Range, several waterways from Rosetta to Granton could flood. Roads, schools, businesses and properties may flood and Brooker Highway could be cut in several places. This would mean that large parts of these suburbs may become isolated. Travel and business could be difficult or impossible for short periods.

As well as flooding from creeks and rivulets, heavy rain can directly cause flooding in this area. On the maps in this plan you can see flooding from both rivers and heavy rain.

During and following very heavy rain, there is a risk of landslides in steep areas that could damage roads and properties. Flooding and erosion from tides, storm and flood in the Derwent are also possible along the coastal areas in this plan.

The maps in this guide show the level of flooding that has a 1% chance of happening any year (known as 1% Annual Exceedance Probability, or AEP). 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 be prepared for isolation plus potential power and telecommunications outages. For example:

• The Brooker Highway may be cut at Granton, Austins Ferry, Claremont, Chigwell and at the edge of Montrose.
• Main Rd may be flooded in many places.
• Roads that cross the Brooker Hwy via underpass will likely flood.

Depending on where the rain falls and how heavy it is, many streets in this area may also be impassable. Travel in the area is likely to be difficult or impossible until roads are clear.  If you are safe at home or somewhere else, it is usually best you stay where you are until the flooding subsides, unless there is an emergency. If you need to evacuate, you should leave early, before flood waters rise.

Go to TasALERT.com or listen to ABC local radio 936AM for warnings and advice.

您有洪水風險嗎？

Heavy rain on kunanyi/ Mount Wellington can cause flash flooding in any of the surrounding waterways, often with little warning.  Depending on how the rain falls, creeks, rivulets and stormwater runoff can cause flash flooding that is difficult to predict.

The flooding history of this area is not well recorded.

我應該做什麼？

• Check the maps to see whether your home or business could flood.
• Check your home or business and prepare it, to minimise possible flood damage.
• 檢查您是否能在洪水期間安全地抵達家中、工作地點或學校。.
• Prepare a Home Emergency Plan. See 為緊急情況做好準備 – 為個人和家庭準備應急措施的指南。. 
• 如果你可能被隔離且必須取得服務，你可能需要提早撤離。.

如果您居住在低窪地區或靠近水道，您的房屋可能會被淹沒。即使您的住所安全，您也可能需要繞過淹水地區，或者您的道路通行可能會被阻斷。切勿駕車進入或身處洪水之中。道路和橋樑可能會被沖毀或不安全。洪水期間請避免出行。.

知道該怎麼做可以拯救你的生命並保護你的財產。制定家庭緊急計畫是最好的準備方法之一。決定天氣和降雨的觸發條件，以便採取行動。.

中央氣象局預報、警報與觀測

本局發佈 洪水警报、恶劣天气警报和/或雷暴警报，可能因强降雨引发山洪暴发 每當 大雨 可能會在某個區域出現。從發布預警到豪雨發生的時間，可能從一小時到二十四小時不等。.

Glenorchy, Hobart and Kingborough Councils share a flood warning system as areas around kunanyi/ Mount Wellington have similar flash-flooding risks and timeframes. This system allows your local council and SES to judge and monitor the flood risk, and release warnings as needed. There are no formal warning levels for the waterways in this area as the river systems are too short.

雨量觀測 at Claremont, Bridgewater, Mount Dromedary, Collinsvale and other nearby rain gauges can indicate possible flood risks. Given the very short warning times, it is best to act on the predictive BoM warnings rather than wait for any flood alerts during rainfall.

這 Mt Koonya Radar is useful to be aware in real-time where heavy rainfall is falling.  Radar Rainfall estimates can also fill in gaps in areas where there are no rainfall stations.

了解警告和關鍵資訊

Keep aware of what is happening. Check forecasts, observations and warnings regularly.

• TasALERT.com
• 您當地的 ABC 電台 或
• 這 氣象局 網站.

更多資訊請參閱 www.ses.tas.gov.au/warnings/ .        

洪水水位

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 and how wet the ground is beforehand and where the rain falls.

Minor Flooding

Minor flooding can affect low lying areas, parkland, orchards and areas near the creeks and rivulets. Vehicles and livestock should be moved for their safety. Some minor roads may be flooded.

Moderate Flooding

In a moderate flood, more extensive flooding occurs and more land, roads and some buildings may be flooded.

Abbotsfield Rivulet, Hilton Creek, Faulkners Rivulet and Islet Rivulet may flood some properties during a moderate flood. It is unlikely that the flooding will be above the floor height of houses.

Major Flooding

In a major flood, flooding will be widespread across this area but mostly shallow. The most hazardous flooding will likely be on:

• Brooker Highway near Berriedale Road
• Brooker Highway north of Box Hill Road, near Upper Hilton Rd
• Main Road near Goulds Lagoon
• Claremont Link Road near the Claremont College Campus,
• Abbotsfield Road, Strathaven Drive and Marys Hope Road
• Roseneath Rivulet

Properties near the rivulets and creeks in this area may be flooded above floor height during a major flood. Many roads, including major transit routes, will be flooded and impassable.

Glenlusk may be cut off from the coast for a time.

了解你的風險，做好準備，盡可能降低風險，與他人聯繫，保持警惕並安全行動。.

洪水之前

1. 認識你的風險

塔斯馬尼亞經常發生洪水，可能造成廣泛且嚴重的損害。在過去 200 年裡，塔斯馬尼亞有 78 人死於與洪水相關的事件。本指南旨在幫助您了解您所在地區的洪水風險。.

2. 準備您的家戶

制定包含風暴和洪水應變計畫

思考一下在風暴或洪水來襲時你會怎麼做，意味著你準備得更充分，每個人都會更安全。制定一個家庭中的每個人都理解的緊急計畫。有檢查表可以幫助你思考你的計畫——請參閱 為緊急情況做好準備 – 為個人和家庭準備應急措施的指南。. 

Check your plan regularly and test that everyone in the household understands what would need to happen in a flood.

準備一個緊急救生包

定期測試收音機和手電筒的電池。.

3. Reduce your risk from flooding where you can

• 在購買、維護或開發房地產時，請考慮風暴、洪水和其他災害。.
• 修剪或移除您家中、商家或您家附近有電力線的樹木和樹枝。.
• 保持您的排水溝和排水管暢通。.

4. Connect with others

認識你的鄰居並參與你的社區。一個緊密的社區，在緊急情況下更安全、更有韌性，並有助於每個人在事後更好地恢復。檢查家人和鄰居是否安全，並了解正在發生的事情。.

期間

5. Keep up to date

隨時留意周遭狀況。定期查看天氣預報、觀測數據和警報。. 

• www.TasALERT.gov.au 
• 您當地的 ABC 電台 或
• 這 氣象局 網站.

6. Act Safe

• 監督兒童.
• 為可能的停電、停水或斷網做好準備。.
• 檢查您的緊急救助包是否已準備就緒。.
• 切勿靠近淹水區域，例如排水溝。. 永不 在洪水中有行走、玩耍、骑行或开车。你無法確定水下有什麼，或水有多深、流速有多快。20公分的湍急的洪水就很容易將人沖走並淹死。洪水可能很危險。.

您的房屋可能發生淹水時

• 將家居物品放在高處，以盡量減少潛在損壞。.
• 如果安全的話，請關閉水電和瓦斯。. 
• 一種防止污水倒灌回屋內的好方法是將沙包放入塑膠袋中，然後用它們來堵塞馬桶、蓋住排水孔和水槽。.
• 趁你還能安全脫困時趕快離開。.

如果你需要疏散

• 請遵循 SES / 塔斯馬尼亞警方的建議。.  
• 帶上你的緊急求生包。. 
• 前往朋友或家人較安全的地方，或前往疏散中心。. 
• 讓別人知道你去了哪裡。.

照顧好你的動物

在緊急情況下，您有責任照顧您的動物。如果您有寵物和其他動物，在洪水或其他緊急情況下，疏散的時間會更長。在洪水可能上漲之前，請及時將牲畜移離易受洪水影響的地區。更多資訊請參閱

• RSPCA 應對緊急情況動物的指南
• Huon Valley Council’s advice on preparing an emergency pet plan
• City of Hobart’s advice on Pet Management and Emergencies

Avoid travelling during and after storms

• 不要去觀光。觀光客會延誤緊急服務並造成事故。.
• 注意危險，例如
  • 路面积水
  • 損壞的電力線
  • 山崩
  • 損壞的道路
  • 倒下的樹木或屋頂鐵片。.
• 切勿駕車通過淹水區域。洪水中的大多數死亡和救援事件都與駕車通過淹水區域有關。.
• 緩慢行駛，並在不受洪水影響的道路上打開頭燈。.

之後

• 請持續收聽 ABC 地方電台的最新消息、道路重新開放、社區會議等資訊。.
• 如果您離開家，請勿在聯邦緊急事務局 (SES) 或塔斯馬尼亞警方告知您安全之前回家。.
• 注意道路上的危險，例如路面上的泥沙或碎屑、道路/橋樑損壞以及正在進行清理和修復工作的工人。.

如果您的房屋已受損

• 在檢查損壞時，請待在地面。小心掉落的樹木、碎玻璃、鬆動的屋頂或其它危險物品。.
• 穿著堅固的靴子、手套和防護服。. 
• 請使用手電筒，切勿在受洪水影響的建築物內使用火柴或蠟燭。. 
• 將所有飲用水煮沸，直到被告知自來水再次安全為止。.
• Do not turn on electricity or gas until it is tested by a licensed electrician or gas fitter for safety.
• If your home is damaged and you need to stay somewhere else, take your emergency kit and pets with you.
• 如安全，請拍攝任何損壞的照片，並聯繫您的保險公司。.
• 監督兒童.
• 檢查鄰居是否安好。.

如需更多資訊，請前往 www.ses.tas.gov.au

保持獲取最新資訊及更多詳盡資料

Current warnings (TasAlerts) TasALERT.com

氣象局 bom.gov.au/tas/warnings

Emergency Broadcasters ABC 936AM

TAS SES Social Media facebook.com/sestasmania

SES – Preparing for Flood Emergencies

National Relay Service (NRS)

Glenorchy City Council                                            6216 6800

免責聲明

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.

本指南中的資訊在出版時是最新資料。儘管已盡一切努力確保所呈現數據的有效性和準確性，但州緊急服務部門不對數據錯誤或遺漏負責。請參閱標準 塔斯馬尼亞州政府的版權與免責聲明 更多詳情.