1:5 Flood Map (20% 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 1/5 or a 20% 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）提供了1:2至1:1000洪水规模的淹没地图更新。新的草案地图可在此查看：https://floods.alberta.ca/?app_code=FI&mapType=Draft）。这些淹没地图展示了不同规模的河流洪水对财产的风险。本图上所示的洪水规模，在任意一年中发生的概率为1/5或20%。地图上展示的淹没类型分为以下三种：
o 淹没 - 由于河岸溢出导致的陆地淹没区域。
o 独立 - 低洼地区，不会因河岸溢出而湿润，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。所显示的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不确定性，且这种不确定性在一年中发生概率低于1%的洪水事件中增加。使用此数据时，必须认识到关于洪水确切位置和范围的这种不确定性。
有关卡尔加里的洪水制图更多信息，请访问：https://calgary.ca/flood
关于卡尔加里的河流洪水故事，请参阅：https://maps.calgary.ca/RiverFlooding/。”}