Cygnet and surrounds flood guide - Tasmania State Emergency Service

Riverine flooding information for communities on the Eastern side of the Huon River South of Huonville to Verona Sands

Version 1.0 August 2024

If the Huon River has a major flood, low lying areas along the river’s east side south of Huonville can be flooded, particularly if tides are high. The Channel Highway and Cygnet Coastal Road are likely to be impassable in several places.

Some other areas can also have flash flooding from local minor waterways that join the Huon River if there is heavy local rain. Flash flooding means there can be little specific warning beyond forecasts for heavy rain or severe weather. Agnes Rivulet and nearby creeks can flood parts of Cygnet. Kellaways Creek and its tributaries can flood parts of Pelvarata and Woodstock. There are also areas of Nicholls Rivulet, Gardners Bay and Garden Island Creek that can be flooded from minor local waterways.

本指南中的地图显示了任何一年可能发生的%洪水级别。您一生中很可能会经历地图所示的洪水。塔斯马尼亚人需要为不经常发生的洪水事件以及他们可能经历的轻微洪水做好准备。.

Even if your home is not inundated, you should be prepared for isolation plus potential power and telecommunications outages. The Channel Highway may be cut at Huonville and some other places during a major flood event. Depending on where the rain falls and how heavy it is, roads leading to the Channel such as Pelvarata Road, Nicholls Rivulet Road and Woodbridge Hill Road 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 elsewhere, 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.

Listen to ABC local radio 936AM for warnings and advice.

您有洪水风险吗？

The Huon River has a long history of flooding, with major flood events in 1901, 1947, 1958, 1960, 1975, 1996, 2016 and 2022. The area often has minor flooding.

Areas south of Huonville are exposed to weather systems from the West, South and East. The area can have heavy rain. As an example, the area around Pelverata had major flooding in August 2022, damaging some properties, destroying a bridge and isolating surrounding areas. Cygnet has historically also had damaging floods, for example, in April 1917.

我应该怎么做？

查看地图，了解您的住宅或商家是否可能发生洪水。.
评估您的住宅或企业，并做好准备以最大程度地减少潜在的洪水损害。.
洪水期间，检查您是否能够安全地到达家、工作地点或学校。.
Prepare a Home Emergency Plan. See 做好应急准备 – 个人和家庭应急准备指南。.
如果您可能被隔离并且必须获得服务，您可能需要提早撤离。.

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

如果您住在低洼地区或靠近水道，您的房屋可能会被淹没。即使您的家是安全的，您也可能需要绕过洪水地区，或者您的道路通行可能会受到阻碍。切勿驾车进入或进入洪水区域。道路和桥梁可能被冲毁或不安全。请避免在洪水期间出行。.

了解该怎么做可以拯救你的生命并帮助保护你的财产。制定家庭应急计划是准备工作的最佳方法之一。决定天气和降雨触发条件，以便知道何时采取行动。.

澳大利亚气象局天气预报、警告和观测

该局发布 特大暴雨预警，恶劣天气预警和/或雷暴预警，可能导致山洪暴发 每当大雨 is expected in an area. The time between the warning and heavy rain occurring can vary from an hour to 24 hours or more.

Whenever rain that may lead to flooding along the Huon River is expected, the Bureau will issue:

A Flood Watch – a “heads up” early advice of forecast weather that may lead to flooding
A Flood Warning – giving a prediction of when flooding is likely to develop at gauge locations and possibly forecasting the likely peak river level. Warnings are updated regularly.

SES and the Bureau will issue warnings when the Huon River reaches the following levels.

River gauges	Alert	Minor	Moderate	Major
Huon River at Harrison’s Opening	5.0	5.0	n/a	n/a
Huon River at Tahune Bridge		4.0	5.0	6.3
Huon River at Judbury	3.0	4.0	5.3	6.0
Huon River at Huonville	2.5	3.0	3.6	4.0

There are no formal warning levels for other waterways in the area as the river systems are too short.

降水观测 at Hartz Mountain, Cannells Hill near Huonville, Grove, Woodbridge 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.

这 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.

理解警告和关键信息

留意周围发生的事情。定期查看预报、观测和警报。.

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.

Huon River major flooding

If there is major flooding along the Huon River, and depending on the tides, there may be flooding in low-lying areas close to the river.

A major flood on the Huon River means the river height is at least:

6 metres at Judbury and
4 metres at Huonville Bridge.

That level of flooding is approximately the level of the 2016 floods and there is about a 5-10% chance of such a flood happening any year. Tasmanians need to be prepared for floods that have a 1% chance of happening every year. In this level of flooding, the river height would be about:

9.5 meters at Judbury and
5.6 meters at Huonville Bridge.

Depending on where the rain falls and the tide level, this level of flooding is likely to

Close the Channel Highway and Cygnet Coastal Road in several places, such as at Huonville, near Woodstock, at Cygnet and Nicholls Rivulet.
Close the Cygnet Coast Road and Lymington Road in many places, isolating surrounding properties
Flood some properties in low lying areas near the Huon River, such as around Gardners Bay, Randalls Bay, Garden Island Sands and Charlotte Cove if the tide is high.
Impact low lying areas around Cygnet, such as Burtons Reserve

Minor or Moderate flooding along the Huon River is unlikely to cause significant impacts in the lower areas of the river south of Huonville, unless there is a particularly high tide.

Flooding from other waterways

If there is heavy local rainfall, there can be flash flooding

Around Cygnet from Agnes Rivulet, Supplices Creek, and/or Golden Valley Creek
Low lying areas around Lymington, including sections of Lymington Road south of Jetty Road and parts of the Robleys Road parkland
In parts of Pelvarata and Woodstock from Kellaways Creek and its tributaries
In parts of Nicholls Rivulet from the waterway of that name
Around Gardners Bay from Gardners Creek
In parts of Garden Island Sands from Garden Island Creek.

轻度洪水

A minor flood can inundate low lying paddocks, orchards and other farmland. Stock should be moved for their safety. There may also be some flooding across some minor roads and parkland areas.

中度洪水

农田发生更广泛的洪水，一些建筑物可能会受到超过地面高度的影响。一些房产可能会因次要道路被淹而暂时与外界隔绝数小时。.

特大洪灾

There is at least a 2% chance in any year of major flooding along smaller waterways that can flood homes and other buildings in parts of Franklin, Castle Forbes Bay and surrounding areas.

This level of flooding could be as a result of about 50mm of rain over 6 hours, around Cannells Hill, south of Huonville, for example. Flooding can close the Huon Highway at several locations plus impact low lying properties in areas such as:

In Cygnet on Channel Highway/ Mary Street/ Charlton Street, Slab Road, Charles Street, Garthfield Avenue, Guys Road, the Recreation Grounds, Caravan Park and Burtons Reserve
Along low lying areas of Pelvarata Road and Nicholls Rivulet Road and Smiths Road, Nicholls Rivulet
Garden Island Creek

了解风险，做好准备，尽可能降低风险，与他人联系，保持警惕，并安全行事。.

洪水之前

做好应急准备 – 个人和家庭应急准备指南。.

了解您的风险

塔斯马尼亚州经常发生洪水，可能造成广泛而重大的损失。在过去的 200 年里，塔斯马尼亚州有 78 人死于与洪水有关的事故。本指南旨在帮助您了解您所在地区的洪水风险。.

2. 准备您的家庭

制定涵盖风暴和洪水的应急计划

考虑一下在风暴或洪水来临时你会怎么做，这意味着你会有更好的准备，每个人都会更安全。制定一个你的家庭成员都明白的应急计划。有一些清单可以帮助你完善你的计划——请看做好应急准备 – 个人和家庭应急准备指南。.
定期检查您的计划，并让家中的每一位成员都模拟可能影响您家庭的洪水场景进行演练。.

准备一个应急包

准备好了

电池供电的收音机和手电筒，备用电池
重要信息，例如您的应急计划
紧急电话号码列表
食物和水
急救箱
橡胶或结实的皮革手套

视情况打包

保暖衣物、结实的鞋子或靴子
药品、眼镜或其他必需品
手机和充电器
宠物食品以及它们所需的其他任何物品
照片和特别的纪念品
钱
重要文件，例如
- 保险单据
- 护照和
- 出生证明

定期测试收音机和手电筒里的电池。.

3. 尽可能降低洪水风险

在购买、维护或开发房产时，请考虑风暴、洪水和其他危险。.
修剪或移除您家中、商铺上方或您物业附近电线上方的树木和树枝。.
保持雨水槽和排水沟畅通。.

4. 与他人联系

认识你的邻居并参与社区活动。一个联系紧密的社区在紧急情况下更安全、更有韧性，并且有助于每个人在事后更好地恢复。检查家人和邻居是否安全，是否了解正在发生的情况。.

See for example the Huon Valley Good Neighbour project.

于

5. Keep up to date

留意周围发生的事情。定期查看预报、观测和警报。.

6. Act Safe

看管好孩子。.
为应对可能的电力、供水或网络中断做好准备。.
检查您的应急包是否已准备好。.
避开积水区域，如排水沟。. 永不在洪水期间徒步、玩耍、骑车或驾车。您无法分辨水下有什么，也无法判断水深或水流速度。在仅 20 厘米的快速流动的水中，很容易被冲走并溺水。洪水可能很危险。.

当地面发生洪水时

将家用物品放在高处以最大程度地减少可能的损坏。.
如果安全的话，请关闭水电煤气。.
一种防止污水倒灌回家的好方法是将沙袋放入塑料袋中，然后用它们堵住马桶、覆盖排水管和水槽。.
趁还能安全离开就走。.

如果您需要撤离

遵循 SES / 塔斯马尼亚警方的建议。.
带上你的应急包。.
去安全地点或避难中心与亲友会合。.
让别人知道你去了哪里。.

照顾好您的动物

在紧急情况下，您有责任照顾好您的动物。如果您有宠物和其他动物，在洪水或其他紧急情况下疏散需要更长的时间。在洪水可能上涨之前，将牲畜转移到易受洪水影响的地区。欲了解更多信息，请参阅

避免在风暴期间和风暴过后出行

不要去观光。游客会延误紧急服务并造成事故。.
注意诸如
- 路面积水
- 受损的电力线
- 山体滑坡
- 损坏的道路
- 倒下的树木或屋面板。.
切勿冒险涉水。洪水中的大多数死亡和救援事件都与驾车涉水有关。.
在未受洪水影响的路段，请慢行并打开车头灯。.

之后

请继续收听 ABC 本地广播电台的最新消息、道路重新开放信息、社区会议等。.
如果您离开了家，在紧急事务管理署（SES）或塔斯马尼亚警方告知您可以安全返回之前，请勿回家。.
注意道路危险，例如路面上的泥土或碎屑、损坏的道路/桥梁以及正在进行清理和维修的工作人员。.

如果您的房屋遭到损坏

在检查损坏时，请留在地面。注意倒下的树木、碎玻璃、松动的屋顶或其他危险。.
穿结实的靴子、手套和防护服。.
在受洪水影响的建筑物内部，请使用手电筒，切勿使用火柴或蜡烛。.
饮用水必须煮沸，直到被告知自来水安全为止。.
在经过持证电工或燃气技师安全检测前，请勿开启电源或燃气。.
如果您的房屋受损，需要住到别处，请带上您的应急包和宠物。
如果安全，请拍摄任何损坏的照片并联系您的保险公司。.
看管好孩子。.
检查邻居是否安好。.

欲了解更多信息，请访问 www.ses.tas.gov.au

气象局 (BoM)

Emergency Broadcasters ABC 936AM

TASSES Social Media

facebook.com/sestasmania

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

Huon Valley Council huonvalley.tas.gov.au 6264 0300

全国接力服务 (NRS) relayservice.gov.au

免责声明

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.

本指南中的信息在出版日期时是准确的。尽管已尽一切努力确保所提供数据的有效性和准确性，但州应急服务部门不对数据错误或疏漏负责。请参阅标准塔斯马尼亚州政府版权与免责声明更多详情.

	建议 (黄色): 事件已发生。无即时危险。请保持关注，以防情况发生变化。.
	观察并行动（橙色）：威胁级别有所提高。情况正在变化，您需要立即开始采取行动来保护您和您的家人
	紧急警报（红色）：紧急警报是最高级别的警报。您可能面临危险，需要立即采取行动。任何耽搁都可能危及您的生命。.
	社区更新（蓝色）：关于特定事件或事件，受影响社区的具体信息和最新动态。.
	事件（白色）： an incident is the initial occurrence of an event before it becomes an emergency warning. As soon as an incident is reported, TasALERT published basic information including the type and location of incident.

天鹅与周边地区洪水指南