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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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
The flood areas shown were mapped in 2015 jointly by Alberta Environment and Parks and the City of Calgary, using the best available hydrologic and hydraulic data and models. As such, the flooding shown reflects 2015 conditions, hydrology and topography. The effects of mitigation measures (changes to reservoirs/dams or barriers) built since 2015 are not included. 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 calgary.ca/floodinfo:
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
Updated
April 9 2020
Views
1,322
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 1/100 or a 1% 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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
The flood areas shown were mapped in 2015 jointly by Alberta Environment and Parks and the City of Calgary, using the best available hydrologic and hydraulic data and models. As such, the flooding shown reflects 2015 conditions, hydrology and topography. The effects of mitigation measures (changes to reservoirs/dams or barriers) built since 2015 are not included. 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 calgary.ca/floodinfo:
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
Updated
April 9 2020
Views
1,572
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 1/200 or a 0.5% 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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
The flood areas shown were mapped in 2015 jointly by Alberta Environment and Parks and the City of Calgary, using the best available hydrologic and hydraulic data and models. As such, the flooding shown reflects 2015 conditions, hydrology and topography. The effects of mitigation measures (changes to reservoirs/dams or barriers) built since 2015 are not included. 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 calgary.ca/floodinfo:
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
Updated
April 9 2020
Views
541
The flood extents line was manually delineated from an aerial photo taken on June 22, 2013, and does not represent the peak or maximum flood extents during the June 2013 flood event. This aerial photo was taken somewhat after the flood peak had passed. Actual peak flood extents may have been greater than shown. There may be some error in the extents shown due to the method used for creating the line from the aerial photo (interference of trees, shadows, etc. when interpreting the location of flood water in the photo).
Export as Shapefile or GeoJSON.
Export as Shapefile or GeoJSON.
The approximate flows at the time the aerial photo was taken:
-Bow River upstream of where the Elbow River joins it: 1575 m3/s at time of aerial photo (1840 m3/s at 2013 flood peak flow)
-Elbow River downstream of Glenmore Dam: 550m3/s at time of aerial photo (700 m3/s at 2013 flood peak flow)
-Bow River upstream of where the Elbow River joins it: 1575 m3/s at time of aerial photo (1840 m3/s at 2013 flood peak flow)
-Elbow River downstream of Glenmore Dam: 550m3/s at time of aerial photo (700 m3/s at 2013 flood peak flow)
Updated
April 9 2020
Views
1,101
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 1/10 or a 10% 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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
The flood areas shown were mapped in 2015 jointly by Alberta Environment and Parks and the City of Calgary, using the best available hydrologic and hydraulic data and models. As such, the flooding shown reflects 2015 conditions, hydrology and topography. The effects of mitigation measures (changes to reservoirs/dams or barriers) built since 2015 are not included. 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 calgary.ca/floodinfo:
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
Updated
April 9 2020
Views
267
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 1/50 or a 2% 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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
The flood areas shown were mapped in 2015 jointly by Alberta Environment and Parks and the City of Calgary, using the best available hydrologic and hydraulic data and models. As such, the flooding shown reflects 2015 conditions, hydrology and topography. The effects of mitigation measures (changes to reservoirs/dams or barriers) built since 2015 are not included. 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 calgary.ca/floodinfo:
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
Updated
April 9 2020
Views
253
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 1/20 or a 5% 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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
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 Potential failure of flood protection barrier - Low lying areas that could be flooded if an existing permanent flood protection barrier were to fail.
The flood areas shown were mapped in 2015 jointly by Alberta Environment and Parks and the City of Calgary, using the best available hydrologic and hydraulic data and models. As such, the flooding shown reflects 2015 conditions, hydrology and topography. The effects of mitigation measures (changes to reservoirs/dams or barriers) built since 2015 are not included. 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 calgary.ca/floodinfo:
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Flood-Information.aspx?redirect=/floodinfo
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
Updated
April 9 2020
Views
239
Calgary’s Regulatory Flood Map shows the floodway, flood fringe and overland flood zones. The map is used for land planning purposes, showing the designated flood zones where various development and building regulations apply. The map shows the regulatory flood zones for the Bow River, Elbow River, Nose Creek and West Nose Creek. An annotation file is provided separately as an attachment (see "About" menu").
Designated flood elevations (or steplines) associated with these zones are available separately.
For more on the development and building regulations that apply in each designated flood zone, please refer to Calgary’s Land Use Bylaw, Part 3 Division 3. http://www.calgary.ca/PDA/pd/Pages/Calgary-Land-Use-bylaw-1P2007/Calgary-Land-Use-Bylaw-1P2007.aspx
Are you building or renovating?
If you are building or renovating, check the regulatory flood map on this page, and the 1:100 year inundation map (from Flooding in Calgary: Maps http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Calgary-flood-maps/Flood-maps.aspx) to see if your property is in a flood risk zone. Since late 2011, property owners have been advised of both the official designated flood elevation per the Land Use Bylaw (based on this regulatory flood map) and the most up to date recommended flood elevation (based on the updated 1:100 year inundation map) for their specific property.
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
If you are building or renovating, check the regulatory flood map on this page, and the 1:100 year inundation map (from Flooding in Calgary: Maps http://www.calgary.ca/UEP/Water/Pages/Flood-Info/Calgary-flood-maps/Flood-maps.aspx) to see if your property is in a flood risk zone. Since late 2011, property owners have been advised of both the official designated flood elevation per the Land Use Bylaw (based on this regulatory flood map) and the most up to date recommended flood elevation (based on the updated 1:100 year inundation map) for their specific property.
For Calgary's River Flood story, see: https://maps.calgary.ca/RiverFlooding/
Updated
April 9 2020
Views
1,071
Dataset
Depicts recommended riparian area management category zones along the major rivers and streams of Calgary. These categories are meant to guide land use planning, park management, and river engineering decisions. The spatial mapping of these categories also complements the Riparian Decision Matrix for River Engineering Projects, with the purpose of ensuring bioengineering practices are applied to the maximum extent feasible within The City of Calgary.
Updated
October 15 2020
Views
103
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