Abstract: Flood maps are created by combining hydraulic model results with high-accuracy ground information. Field surveys and LiDAR remote sensing are used to collect river and floodplain elevations, channel cross section data, bridge and culvert information, and flood berm details. A hydrology assessment using recorded and historic flow measurements is typically used to estimate river flows for a wide range of possible open water floods with different chances of occurring each year. When appropriate, an ice jam frequency analysis is undertaken. All this information is used to build a hydraulic model of a river system, which is calibrated using highwater marks and aerial imagery from past floods to ensure that results for the different flood flows being mapped are reasonable. Flood inundation maps show areas at risk for different sized floods, including ice jam floods in some communities. These maps also identify areas that could be flooded if berms or other flood control structures fail and are typically used for emergency response planning and to inform local infrastructure design. Flood hazards have not been identified along all rivers or through all communities, and it is important to remember that risk exists in areas without provincial flood maps. Visit www.floodhazard.alberta.ca for more information about the Flood Hazard Identification Program. The website includes different sections for final flood studies and for draft flood studies. Flood maps can be viewed directly using the Flood Awareness Map Application at floods.alberta.ca. The Alberta Flood Mapping GIS dataset is updated when new information is available or existing information changes; therefore, the Government of Alberta assumes no responsibility for discrepancies at the time of use.
Metadata:
File identifier:
2AE32B0D-C6F9-4E1B-81AB-6FDECC728E28
Language:
Language Code:
eng
Character set:
Character set code:
utf8
Hierarchy level:
Scope code:
dataset
Metadata author:
Responsible party:
Organisation name:
Alberta Environment and Parks, Government of Alberta
Position name:
River Engineering and Technical Services
Contact info:
Contact:
Phone:
Telephone:
Voice:
7804051388
Address:
Address:
Delivery point:
11th floor, Oxbridge Place
Delivery point:
9820 - 106 Street NW
City:
Edmonton
Administrative area:
Alberta
Postal code:
T5K 2J6
Country:
Country:
CA
Electronic mail address:
AEP.Flood@gov.ab.ca
Hours of service:
08:15 to 16:30 Monday to Friday
Contact instructions:
Excluding government holidays
Role:
Role code:
publisher
Date stamp:
2020-10-21
Metadata standard name:
NAP - Metadata
Metadata standard version:
1.2
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Reference system:
Reference system identifier:
RS Identifier:
Authority:
Citation:
Title:
EPSG Geodetic Parameter Registry
Date:
Date:
Date:
2020-10-21
Date type:
Date type code:
creation
Code:
3402
Code Space:
EPSG
Version:
8.9.3
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Data identification:
Citation:
Citation:
Title:
Alberta Flood Mapping
Date:
Date:
Date:
2020-10-21
Date type:
Date type code:
creation
Cited responsible party:
Responsible party:
Organisation name:
Alberta Environment and Parks, Government of Alberta
Position name:
River Engineering and Technical Services
Contact info:
Contact:
Phone:
Telephone:
Voice:
7804051388
Address:
Address:
Delivery point:
11th floor, Oxbridge Place
Delivery point:
9820 - 106 Street NW
City:
Edmonton
Administrative area:
Alberta
Postal code:
T5K 2J6
Country:
Country:
CA
Electronic mail address:
AEP.Flood@gov.ab.ca
Hours of service:
08:15 to 16:30 Monday to Friday
Contact instructions:
Excluding government holidays
Role:
Role code:
originator
Abstract:
Flood maps are created by combining hydraulic model results with high-accuracy ground information. Field
surveys and LiDAR remote sensing are used to collect river and floodplain elevations, channel cross section
data, bridge and culvert information, and flood berm details. A hydrology assessment using recorded and
historic flow measurements is typically used to estimate river flows for a wide range of possible open water
floods with different chances of occurring each year. When appropriate, an ice jam frequency analysis is
undertaken. All this information is used to build a hydraulic model of a river system, which is calibrated
using highwater marks and aerial imagery from past floods to ensure that results for the different flood
flows being mapped are reasonable. Flood inundation maps show areas at risk for different sized floods,
including ice jam floods in some communities. These maps also identify areas that could be flooded if berms
or other flood control structures fail and are typically used for emergency response planning and to inform
local infrastructure design. Flood hazards have not been identified along all rivers or through all
communities, and it is important to remember that risk exists in areas without provincial flood maps. Visit
www.floodhazard.alberta.ca for more information about the Flood Hazard Identification Program. The website
includes different sections for final flood studies and for draft flood studies. Flood maps can be viewed
directly using the Flood Awareness Map Application at floods.alberta.ca. The Alberta Flood Mapping GIS
dataset is updated when new information is available or existing information changes; therefore, the
Government of Alberta assumes no responsibility for discrepancies at the time of use.
Purpose:
Alberta Environment and Parks identifies flood-prone areas across the province as part of the Flood Hazard
Identification Program. Flood studies are detailed assessments of flood risk along a specific river reaches.
They include flood maps that identify where water will flow during a flood and what land could be flooded
for different sized floods. Flood studies can include both open water and ice jam flood maps where
appropriate. Flood hazard maps are typically used for long range planning, to inform land use decisions; and
are available to all levels of government and the public to help build resilient communities.
Status:
Progress code:
completed
Point of contact:
Responsible party:
Organisation name:
Alberta Environment and Parks, Government of Alberta
Position name:
River Engineering and Technical Services
Contact info:
Contact:
Phone:
Telephone:
Voice:
7804051388
Address:
Address:
Delivery point:
11th floor, Oxbridge Place
Delivery point:
9820 - 106 Street NW
City:
Edmonton
Administrative area:
Alberta
Postal code:
T5K 2J6
Country:
Country:
CA
Electronic mail address:
AEP.Flood@gov.ab.ca
Hours of service:
08:15 to 16:30 Monday to Friday
Contact instructions:
Excluding government holidays
Role:
Role code:
pointOfContact
Resource maintenance:
Maintenance information:
Maintenance and update frequency:
Maintenance frequency code:
asNeeded
Descriptive keywords:
Keywords:
Keyword:
Alberta, Canada
Keyword:
Athabasca
Keyword:
Banff
Keyword:
Barrhead
Keyword:
Municipal District of Bighorn
Keyword:
Exshaw
Keyword:
Black Diamond
Keyword:
Turner Valley
Keyword:
Bragg Creek
Keyword:
Camrose
Keyword:
Canmore
Keyword:
Carbon
Keyword:
Cardston
Keyword:
Crowsnest Pass
Keyword:
Devon
Keyword:
Fort Saskatchewan
Keyword:
Didsbury
Keyword:
Drumheller
Keyword:
Eckville
Keyword:
Edmonton
Keyword:
Grande Prairie
Keyword:
High River
Keyword:
Irvine
Keyword:
Lacombe
Keyword:
Lamont
Keyword:
Lethbridge
Keyword:
McDougal Flats
Keyword:
Millet
Keyword:
Nisku
Keyword:
Okotoks
Keyword:
Pincher Creek
Keyword:
Ponoka
Keyword:
Priddis
Keyword:
Red Deer County
Keyword:
Markerville
Keyword:
Red Deer
Keyword:
Waskasoo
Keyword:
Rochester
Keyword:
Rocky View County
Keyword:
Sangudo
Keyword:
Slave Lake
Keyword:
St. Albert
Keyword:
Stettler
Keyword:
Sundre
Keyword:
Vegreville
Keyword:
Walsh
Keyword:
Watino
Keyword:
Nose Creek
Keyword:
Airdrie
Keyword:
Calgary
Keyword:
Cougar Creek
Keyword:
Cochrane
Keyword:
Fort Macleod
Keyword:
Fort McMurray
Keyword:
Fort Vermillion
Keyword:
Hinton
Keyword:
Manning
Keyword:
Medicine Hat
Type:
Keyword type code:
place
Descriptive keywords:
Keywords:
Keyword:
Flood
Keyword:
Flood Hazard
Keyword:
Flood Hazard Identification Program
Keyword:
Flood Hazard Studies
Keyword:
Flood Inundation Mapping
Keyword:
Flood Hazard Mapping
Keyword:
Floodway
Keyword:
Flood Fringe
Keyword:
Floodplains
Keyword:
River Hazard
Type:
Keyword type code:
theme
Resource constraints:
Legal constraints:
Access constraints:
Restriction code:
otherRestrictions
Other constraints:
To access the data you must agree to the terms of the Open Government Licence - Alberta found at
http://open.alberta.ca/licence
Resource constraints:
Legal constraints:
Use constraints:
Restriction code:
license
Other constraints:
Your use of this information will be governed by the terms of the Open Government Licence - Alberta, in
force as of the date you accessed the information, found at https://open.alberta.ca/licence
Resource constraints:
Legal constraints:
Use limitation:
Distribution Liability: Under the terms of the Open Government Licence - Alberta, the Information is
licensed as is, and the Information Provider excludes all representations, warranties, obligations, and
liabilities, whether express or implied, to the maximum extent permitted by law. The Information
Provider is not liable for any errors or omissions in the Information, and will not under any
circumstances be liable for any direct, indirect, special, incidental, consequential, or other loss,
injury or damage caused by its use or otherwise arising in connection with this licence or the
Information, even if specifically advised of the possibility of such loss, injury or damage.
Resource constraints:
Security constraints:
Classification:
Classification code:
unclassified
User note:
Public/Unrestricted
Classification system:
GOA Data and Information Security Classification
Handling description:
https://imtpolicy.sp.alberta.ca/standards/pdf/Data-and-Information-Security-Classification-Standard.pdf
Language:
Language Code:
eng
Character set:
Character set code:
utf8
Topic category:
Topic category code:
environment
Topic category:
Topic category code:
inlandWaters
Extent:
Extent:
Description:
Studies span from 1983 to 2017. See Studies table in the geodatabase for specific dates for each study.
Temporal element:
Temporal extent:
Extent:
Time period:
Begin date:
1983-01-01T00:00:00
End date:
2017-12-31T00:00:00
Extent:
Extent:
Description:
Various study areas within Alberta.
Geographic element:
Geographic bounding box:
West bound longitude:
-120
East bound longitude:
-110
South bound latitude:
49
North bound latitude:
60
Supplemental Information:
This ESRI geodatabase includes eleven feature classes and one table that together comprise the Alberta flood
mapping GIS dataset.
Cross_Sections
Contains polylines showing the locations of river cross sections used in the flood studies. The computed flood
levels and design flood elevations are included at each cross section as an attribute, when available. Flood
levels and design flood elevations are in meters above sea level referenced to the Canadian Geodetic
Vertical Datum of 1928 (CGVD28).
Field Descriptions
Link_ID: The primary key joining the flood studies to their respective cross sections
RiverName: River name
XSectionNumber: Number used to identify the cross section on the maps and/or in the hydraulic model.
WSE_0002Y_OW: Water surface elevations for the 1:2 open water flood (m)
WSE_0005Y_OW: Water surface elevations for the 1:5 open water flood (m)
WSE_0010Y_OW: Water surface elevations for the 1:10 open water flood (m)
WSE_0020Y_OW: Water surface elevations for the 1:20 open water flood (m)
WSE_0025Y_OW: Water surface elevations for the 1:25 open water flood (m)
WSE_0035Y_OW: Water surface elevations for the 1:35 open water flood (m)
WSE_0050Y_OW: Water surface elevations for the 1:50 open water flood (m)
WSE_0075Y_OW: Water surface elevations for the 1:75 open water flood (m)
WSE_0100Y_OW: Water surface elevations for the 1:100 open water flood (m)
WSE_0200Y_OW: Water surface elevations for the 1:200 open water flood (m)
WSE_0350Y_OW: Water surface elevations for the 1:350 open water flood (m)
WSE_0500Y_OW: Water surface elevations for the 1:500 open water flood (m)
WSE_0750Y_OW: Water surface elevations for the 1:750 open water flood (m)
WSE_1000Y_OW: Water surface elevations for the 1:1000 open water flood (m)
WSE_0050Y_IJ: Water surface elevations for the 1:50 ice jam flood (m)
WSE_0100Y_IJ: Water surface elevations for the 1:100 ice jam flood (m)
WSE_0200Y_IJ: Water surface elevations for the 1:200 ice jam flood (m)
WSE_Design_Elevation: Water surface elevations for the design flood (m)
Hazard
Contains the flood hazard polygons with attributes that identify the flood zones within the flood hazard areas.
Field Descriptions
Link_ID: The primary key joining the flood studies to their respective hazard polygons
One_Zone: Flood hazard areas classified as 'Flood Hazard Area' or 'Under Review'
Two_Zone: Flood hazard areas classified as 'Floodway', 'Flood Fringe', or 'Under Review'
Multi_Zone: Flood hazard areas classified as 'Floodway', 'Flood Fringe', 'Overland Flow' or 'Under Review'
FloodMechanism: Flood mechanism (e.g. open water, ice jam)
Inundation_Open_Water_0002Y… Inundation_Open_Water_1000Y
Contains nine feature classes with flood inundation polygons that identify direct flooding and protected by
flood berm zones. There is one feature class for each flood return period (0002Y = 1:2 flood, 0005Y = 1:5
flood,…1000Y = 1: 1000 flood) and flood mechanism (i.e. open water).
Field Descriptions
Link_ID: The primary key joining the flood studies to their respective inundation polygons
FloodReturnPeriod: Flood return period (e.g. 1:2, 1:5,...1:100,…1:1000)
FloodAEP: Annual exceedance probability (AEP) expressed as a percent (e.g. 50%, 20%,…1%,...0.1%)
FloodProbability: Annual exceedance probability (AEP) expressed as a probability (e.g. 0.5, 0.2,…0.01,...0.001)
InundationZone: Inundation zones classified as 'Direct flooding' or 'Protected by Flood Berm'
FloodMechanism: Flood mechanism (e.g. open water, ice jam)
Studies
A table with information about the flood study and a link to the original report.
Field Descriptions
Link_ID: The primary key (one-to-many) joining the flood studies to all other features
StudyName: Name of the study
StudyCodeYear: Unique code name for each study
StudyStatus: Status of the study
StudyAuthor: Author of the study report(s)
ReportTitle: Title of the study report(s)
StudyDate: Month and year that the report was completed
LastRevisionDate: Month and year that the last revision was made to the report, if any revisions have been made
DesignationStatus: Identifies studies that have been officially designated by the Government of Alberta
DesignationDate: The date the flood study was designated
StudyText: A high level summary of the flood study
HazardText: A high level summary of the design flood
FloodMechanismText: A high level summary of the flood mechanism identified in the study
RevisionText: An overview of any revisions that have been made to the flood study, if any revisions have been
made
StudyLink: Web link or contact information to obtain a copy of the flood study report
Conversion Notes
This dataset is provided in a 10-Degree Transverse Mercator projection with a central meridian of -115֯,
referenced to the Canadian Spatial Reference System, North American Datum of 1983, Epoch 2002 (NAD1983
(CSRS) 10TM AEP Forest).
All elevations are referenced to the Canadian Geodetic Vertical Datum of 1928 (CGVD28).
Appropriate transformation grids should be used when combining data with different datums. ABCSRSV4.GSB (also
known as ABCSRSV4.DAC) is the most current transformation grid for NAD83 to NAD83(CSRS) in Alberta.
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Feature catalogue description:
Compliance code:
false
Language:
Language Code:
eng
Included with dataset:
true
Feature types:
missing
Feature catalogue citation:
Citation:
Title:
Alberta Flood Mapping GIS Dataset
Date:
Date:
Date:
2020-10-21
Date type:
Date type code:
creation
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Distribution:
Distribution format:
Format:
Name:
FGDB
Version:
10.7.1
Specification:
ESRI File Geodatabase
File decompression technique:
ZIP
Distribution format:
Format:
Name:
PDF
Version:
1.7
Specification:
Adobe PDF
Distributor:
Distributor:
Distributor contact:
Responsible party:
Organisation name:
Alberta Environment and Parks, Government of Alberta
Position name:
Provincial Geospatial Centre
Contact info:
Contact:
Address:
Address:
Delivery point:
9820 - 106 Street NW
Delivery point:
14th Floor Oxbridge Place
City:
Edmonton
Administrative area:
Alberta
Postal code:
T5K 2J6
Country:
Country:
CA
Electronic mail address:
AEP.Data@gov.ab.ca
Role:
Role code:
distributor
Transfer options:
Digital transfer options:
Units of distribution:
MB
Transfer size:
20.5
Online:
Online Resource:
Linkage:
URL:
https://extranet.gov.ab.ca/srd/geodiscover/srd_pub/inlandWaters/ABFloodMapping.zip
Protocol:
FTP
Name:
Alberta Flood Mapping (ZIP)
Description:
FGDB containing Alberta Flood Mapping dataset and PDF README file
Function:
Online function code:
download
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Data quality:
Scope:
Scope:
Hierarchy level:
Scope code:
dataset
Lineage:
Lineage:
Statement:
Flood maps are created by combining hydraulic model results with high-accuracy ground information. Older
flood studies include maps for as many as three flood scenarios, including the 1:100 flood. Newer
studies include maps for as many as thirteen scenarios, from the 1:2 flood to the 1:1000 flood. The
design flood is typically a 1:100 open water flood but may also reflect 1:100 ice jam flood levels or be
based on a historical flood event. The flood hazard map includes additional analysis to define the
floodway. Historically, the Flood Hazard Identification Program focused on specific communities and
densely populated areas, where the risk to safety and potential for significant flood damage is
typically highest. New flood studies can include longer lengths of river and less populated areas, where
appropriate.
Process step:
Process step:
Description:
Field surveys and LiDAR remote sensing are used to collect river and floodplain elevations, channel
cross section data, bridge and culvert information, and flood berm details. A hydrology assessment
using recorded and historic flow measurements is typically used to estimate river flows for a wide
range of possible open water floods with different chances of occurring each year. When appropriate,
an ice jam frequency analysis is undertaken. All this information is used to build a hydraulic model
of a river system, which is calibrated using highwater marks and aerial imagery from past floods to
ensure that results for the different flood flows being mapped are reasonable.
Date and time:
2020-10-21T00:00:00
Processor:
Responsible party:
Organisation name:
Alberta Environment and Parks, Government of Alberta
Position name:
River Engineering and Technical Services
Contact info:
Contact:
Phone:
Telephone:
Voice:
7804051388
Address:
Address:
Delivery point:
11th floor, Oxbridge Place, 9820 - 106 Street NW
City:
Edmonton
Administrative area:
Alberta
Postal code:
T5K 2J6
Country:
Country:
CA
Electronic mail address:
AEP.Flood@gov.ab.ca
Hours of service:
08:15 to 16:30 Monday to Friday
Contact instructions:
Excluding government holidays
Role:
Role code:
processor
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Maintenance information:
Maintenance and update frequency:
Maintenance frequency code:
asNeeded
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