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
▲ Return To Top

Reference system info:

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
▲ Return To Top

Identification info:

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.
▲ Return To Top

Content info:

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
▲ Return To Top

DISTRIBUTION INFO:

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
▲ Return To Top

Data quality info:

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
▲ Return To Top

Metadata maintenance:

Maintenance information: Maintenance and update frequency: Maintenance frequency code: asNeeded
▲ Return To Top