1:2 Flood Map (50% chance of occurring in any year)

(Note: Updated inundation maps for 1:2 to 1:1000 floods are available from Alberta Environment and Parks (2020). The new draft maps can be viewed here: https://floods.alberta.ca/?app_code=FI&mapType=Draft)
These inundation maps show whether a property is at risk for various sized river floods. The size of flood shown on this map has a 1/2 or a 50% chance of occurring in any year.
The three distinct types of inundation shown on the maps are:
o Inundation - Area flooded overland due to riverbank overtopping.
o Isolated - Low lying areas that will not be wet from riverbank overtopping, but may experience groundwater seepage or stormwater backup.
o Protected - Area protected by a permanent flood barrier.
The flood areas shown are based on Alberta Environment and Parks most recent (2020) inundation maps. There is uncertainty inherent in predicting the effects of flood events, and this uncertainty increases for floods with less than a 1% chance of occurrence in any year. Any use of this data must recognizing the uncertainty with regards to the exact location and extent of flooding.
More information on flood mapping for Calgary is available at https://calgary.ca/flood
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/

（注：阿尔伯塔省环境和公园部（2020年）已更新了针对1:2至1:1000洪水比例的淹没地图。新的草案地图可在此查看：https://floods.alberta.ca/?app_code=FI&mapType=Draft）。本组淹没地图展示了各类规模河流洪水对财产可能造成的风险。本地图上所展示的洪水规模具有在任意一年发生的概率为1/2或50%。地图上所显示的三种不同类型的淹没情况如下：

o 淹没 - 由于河岸溢出而导致陆地被淹的区域。

o 孤立 - 低洼地区，由于河岸溢出不会受到湿润，但可能经历地下水渗透或暴雨积水倒灌。

o 保护 - 由永久性洪水屏障保护的区域。

所示洪水区域基于阿尔伯塔省环境和公园部最新的（2020年）淹没地图。预测洪水事件的影响存在固有的不确定性，且对于任意一年发生概率低于1%的洪水，这种不确定性会加剧。使用此数据时，必须认识到与洪水确切位置和范围有关的不确定性。

有关卡尔加里的洪水制图信息，请参阅https://calgary.ca/flood。

有关卡尔加里的河流洪水故事，请参阅https://maps.calgary.ca/RiverFlooding/。