Riverine flooding information for the Welcome River, Montagu River, Duck River, Black River and Detention River catchments

Version 1.0 October 2025

若要更詳細地查看地圖,, 查看塔斯馬尼亞策略性洪水圖.

The far northwest of Tasmania has several rivers, including the

  • Welcome
  • Montagu
  • Duck
  • Black, and
  • Detention Rivers.

The Duck and Black Rivers, along with their smaller streams, can cause flooding in

  • Smithton
  • Scotchtown
  • Edith Creek
  • Roger River, and
  • Forest.

The Detention River can also cause flooding in

  • Hellyer
  • Rocky Cape, and
  • Detention.

These maps show floods that have a 1% chance of happening in any year (Annual Exceedance probability (AEP).

Flood levels near the lower part of the of these rivers can change depending on when the flood peak and high tide happen.

In a moderate to major flood, roads in this region could be cut off for some time. If you need to leave your home, it’s important to go early, before floodwaters rise. Check warnings and advice at www.tasalert.com or listen to ABC local radio.

Floodwaters could leave your home isolated for several days. Even if your home doesn’t flood, you might not be able to get help if needed. Make sure you have enough food, water, and supplies for at least three days, and be ready for power and phone outages.

您有洪水風險嗎?

Past recent flooding events across these catchments include:

  • July 2000 – 3.45m at Duck River.
  • October 2022 – At least six houses were close to inundation and many roads cut.

我應該做什麼?

  • Check the map to see whether your home or business could flood or be isolated.
  • 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。. 

  • If you are a primary producer, the SES Farm Flood Readiness Kit provides advice on preparing for a flood to help protect your animals and property. See www.ses.tas.gov.au/plan-prepare/flood-plan/ .
  • If you will be isolated you may need to evacuate early.
  • 評估您的住家或公司,並做好準備以盡量減少潛在的洪水損害。.
  • If you are camping in a flood prone area, make sure you stay informed and move to higher ground early if a flood is likely.

No two floods are the same. Floods like the one shown in the map or worse will occur.

If you live in a low-lying area you may be at risk of flooding. Even if your home is safe, you may need to detour around flooded areas. Never drive through or enter flood waters.

Knowing what to do can save your life and help protect your property. Preparing a Home Emergency Plan is one of the best ways to prepare.

Include weather and rainfall triggers for action in your Home Emergency Plan.

Bureau of Meteorology (BoM) Forecasts, Warnings, and Observations

The Bureau of Meteorology (the Bureau) issues a Flood Watch when predicted weather might cause floods in one or two days. A Flood Watch may:

  • be for a specific area such as Northwest Coast forecast district, or
  • be generalised such as for northwest river systems

The Bureau of Meteorology (The Bureau) issues Severe Weather Warning for Heavy rain with the potential to cause flash flooding when forecast or observed weather may cause flash flooding. A Severe Weather Warning may:

  • be for a specific area such as Smithton and surrounds; or
  • a generalised areas such as northwest coast between Cape Grim and Table Cape and north of a line between Arthur River and Yolla.

The Bureau of Meteorology does not provide a specific flood warning for the Duck River.

Smithton Flood map 1pc AEP

Rainfall Monitoring and Observations

There is a BoM sub-daily rainfall gauge at Smithton Aerodrome, located on the northern edge of the Duck River catchment, and another at Luncheon Hill just beyond the southern edge of the catchment.  Rainfall at Smithton Aerodrome and Luncheon Hill can be monitored on the Bureau website.

The N.W. Tasmania (West Takone) Radar is useful to be aware of where heavy rainfall is falling.  Radar Rainfall estimates can fill in gaps in areas where there are no rainfall stations. Go to: http://www.bom.gov.au/products/IDR523.loop.shtml .

了解警告和關鍵資訊

隨時留意周遭狀況。定期查看天氣預報、觀測數據和警報。.

 建議 (黃色): 已發生事件。目前沒有立即危險。請隨時更新最新情況,以防局勢變動。. 
觀察與行動(橘色): 威脅等級升高。情勢正在改變,您現在就必須採取行動保護您和您的家人。
緊急警告(紅色): 緊急警報為最高級別的警報。您可能身處危險之中,需要立即採取行動。任何延誤都可能危及您的生命。. 
社群更新(藍色): 針對特定事件或事故,向受影響社群提供的具體資訊和最新消息。.
事件(白色): 事件是緊急警報發布前的初步發生。一旦事件被報告,TasALERT 就會發布基本資訊,包括事件的類型和地點。.

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

South of Smithton flood map

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。. 
定期檢查您的計劃,並讓家中的每個人都設想一次可能影響您家的洪水情況來進行測試。.

準備一個緊急救生包

準備好了

  • 電池供電的收音機和手電筒,備用電池
  • 重要資訊,例如您的緊急應變計畫
  • 緊急電話號碼列表
  • 食物和水
  • 急救箱
  • 橡膠手套或堅固的皮革手套

需要時打包

  • 暖和的衣服、結實的鞋子或靴子
  • 藥品、眼鏡或其他必需品
  • 手機和充電器
  • 寵物食品和他們需要的任何其他東西
  • 照片和特別紀念品
  • 重要文件,例如
    • 保險文件
    • 護照與
    • 出生證明

定期測試收音機和手電筒的電池。.

3. 在可能的情況下,降低您遭受洪水侵襲的風險

  • 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. 與他人建立聯繫

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。.

South og Smithton to Scotchtown flood map

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。. 

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

Scotchtown to Eurebia flood map (Allen Creek)

請避免在風暴期間和風暴之後旅行

  • 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。.
Eurebia to Edith Creek flood map
Roger River flood map
Hellyer and Detention flood map

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。.
  • 在經註冊電工或燃氣技師測試安全之前,請勿開啟電力或燃氣。.
  • 如果您的房屋受損,需要暫時住在其他地方,請攜帶您的緊急應變包和寵物一同前往。
  • 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 .

Smithton and far NW 0.5% AEP flood map with potentially isolated areas
Far NW flood map key map

保持獲取最新資訊及更多詳盡資料

Current warnings (TasAlerts) TasALERT.com

Bureau of Meteorology (BoM) bom.gov.au/tas/warnings

Emergency Broadcasters ABC 103.3 FM

TASSES Social Media facebook.com/sestasmania

Preparing for Flood Emergencies ses.tas.gov.au/flood-plan/

Circular Head Council www.circularhead.tas.gov.au | 6452 4800

Waratah-Wynyard Council warwyn.tas.gov.au | 6443 8333

National Relay Service (NRS) relayservice.gov.au

免責聲明

The information in this guide is current at the date of publication. While every effort has been taken to ensure the validity and accuracy of the data presented, the State Emergency Service does not take responsibility for data error or omission. Please see the standard Tasmanian Government’s Copyright and Disclaimer Statement for more details https://www.tas.gov.au/codi .

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.

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