River Forecast Section, Alberta Environment and Sustainable Resource Development, Government of Alberta20130809AB_FHM_FLOOD_FRINGE_20130809vector digital dataEdmonton, AlbertaRiver Forecast Section, Alberta Environment and Sustainable Resource Development, Government of Albertahttp://www.envinfo.gov.ab.ca/FloodHazard/AB_FHM_FLOOD_FRINGE_20130809Alberta Flood Hazard Mapping GIS Data Archive - AB_FHM_FLOOD_FRINGE_20130809.ZIP
IMPORTANT! This digital data may not reflect official flood hazard areas delineated in original hardcopy mapping produced under the Flood Hazard Identification Program. Contact the River Forecast Section for clarification if the precise flood hazard extent or a design flood level is critical to any application. This digital data archive is updated when new information is available or existing information changes, and the currency of its flood hazard mapping assets are not guaranteed. Refer to the Supplemental Information section of this document for important information regarding data and conversion processes. IMPORTANT!
Alberta Environment and Sustainable Resource Development identifies flood hazard areas across the province as part the Flood Hazard Identification Program. Studies commissioned as part of the program are comprised of reports and mapping. Flood hazard mapping delineates areas that would be inundated during the 100-year design flood under encroached conditions and provides design flood levels along study cross sections.
The flood hazard area is divided into floodway and flood fringe components to support appropriate flood hazard area management. The floodway area is that portion of the river channel and floodplain required to convey the 100-year design flood. The floodway is where flood flows are deepest, fastest and most destructive. New development is discouraged in the floodway and may not be permitted in some communities. The flood fringe is the area outside of the floodway that will still be flooded during the design event, and may include overland flow areas. The water in the flood fringe is generally less than one metre deep and flows more slowly. Development in the flood fringe may be permitted provided that its adequately floodproofed to accommodate design flood elevations and any required freeboard.
The current design flood standard in Alberta is the 100-year flood, determined when a flood hazard study is undertaken. A 100-year flood is defined as a flood whose magnitude has a one percent chance of being equalled or exceeded in any year. The design flood can also reflect a computed 100-year water level resulting from an ice jam or be based on a historical flood event.
Design flood levels are water elevations within a flood hazard area computed to result from a design flood under encroachment conditions. Encroachment conditions assume a future scenario where the flood fringe is fully developed and flood flows are conveyed entirely within the floodway. Design flood levels should not change as a result of development or obstruction of flows within the flood fringe.
More information on the Flood Hazard Identification Program can be found at http://environment.alberta.ca/01260.html. The website includes synopses and background information for all official Alberta Environment and Sustainable Resource Development flood hazard studies. Official flood hazard mapping for communities across Alberta is available online using the Flood Hazard Map Application at http://www.envinfo.gov.ab.ca/FloodHazard/. The application uses GIS technology to display mapped areas, including cross section locations and design flood levels along with links to specific study pages.
Flood hazards have not been identified in all communities and may exist in areas without official flood hazard mapping produced under the provincial Flood Hazard Identification Program. Contact the River Forecast Section for additional information.Flood hazard mapping is created to increase public safety and awareness of flood hazards, and to be used as a planning tool by all levels of government and the public to mitigate future flood damages.Data Notes
AB_FHM_FLOOD_FRINGE_20130809.ZIP - Alberta Flood Hazard Mapping GIS Data Archive
The Alberta digital flood hazard mapping dataset includes five ESRI GIS shapefiles that together comprise the Alberta digital flood hazard mapping dataset. 1) AB_FHM_CROSS_SECTIONS_20130809.SHP
Contains linework showing the locations of river cross sections used in flood hazard mapping analyses (when available or appropriate to the study) and includes design flood elevations at those cross sections as an attribute.
2) AB_FHM_FLOODWAY_20130809.SHP
Contains polygon data delineating floodway zones within flood hazard areas.
3) AB_FHM_FLOOD_FRINGE_20130809.SHP
Contains polygon data delineating flood fringe zones within flood hazard areas. 4) AB_FHM_OVERLAND_FLOW_20130809.SHP
Contains polygon data delineating areas affected by overland flow (flood fringe) within flood hazard areas, if such areas have been identified. These areas are considered a special case of the flood fringe.
5) AB_FHM_UNDER_REVIEW_20130809.SHP
Contains polygon data delineating areas associated with potential or known flood hazard, but where final data is currently under review.
Conversion Notes
The geographic CSRS98 NAD83 coordinate system and datum were chosen as the reference system for all Alberta flood hazard mapping data, in order to retain accuracy and precision regardless of the systems used in individual flood hazard studies.
Appropriate transformation grids should be used when converting between the CSRS98 geographic system and the Mercator-based projected coordinate systems commonly used in Alberta (3TM, UTM and 10TM) or between NAD27 and NAD83 datums.
Conversion is a one-step process with NAD83 data: NAD83(Original) <-> NAD83(CSRS98).
Conversion is a two-step process with NAD27 data, with separate conversions between coordinate system and datums: NAD27(Original) <-> NAD83(Original) <-> NAD83(CSRS98). 1) NTV2_O.GSB (known in Alberta as NTV2_0.DAC) is the transformation grid to go between NAD27(Original) and NAD83(Original).
2) ABCSRSV4.GSB (known in Alberta as ABCSRSV4.DAC) is the most current transformation grid to go between NAD83(Original) and NAD83(CSRS98).en20130809publication dateAs needed-118.848536-110.62105458.40397049.181889-118.848536-110.62105449.18188958.403970ISO 19115 Topic CategoryinlandWatersenvironmentnoneflood hazardflood hazard identification programflood hazard studiesflood hazard mappingfloodwayflood fringeAlberta Geographic Names (GNS)AlbertanoneNorthern HemisphereWestern HemisphereMid-latitudeNorth AmericaCanadaAlbertaGeneral Public: For conditional general public use. User must accept terms and conditions in a product license agreement before obtaining data. Government of Alberta Ministries: Conditional access to this data for internal business purposes is available to Government of Alberta Ministries and authorized agencies through Informatics Branch of Alberta Environment and Sustainable Resource Development.General Public: This digital data is protected under copyright to the Government of Alberta with all rights reserved and is subject to the conditions outlined in the Informatics Branch License Agreement for Digital Data. Government of Alberta Ministries: Government of Alberta Ministries and authorized agencies may conditionally use this data for internal business purposes which includes conditional sharing of the data with other third parties (i.e. contractors, stakeholders) if necessary for reasonable use of the data relating to the provision of services to the Crown as represented by each Ministry.Alberta Environment and Sustainable Resource Development, Government of Albertamailing and physical address
11th floor, Oxbridge Place
9820 - 106 Street NW
EdmontonAlbertaT5K 2J6Canada78042762807804220262aenv-flood.risk-maps@gov.ab.ca0815 to 1630, Monday to FridayContact the River Forecast Section for additional information and clarification.
7804276280 (voice)
7804220262 (fax)
aenv-flood.risk-maps@gov.ab.caGovernment of Alberta Security Classification Guidelines: http://www.im.gov.ab.ca/publications/pdf/InfoSecurityClassification.pdfProtectedESRI ArcCatalog 9.3.1.3500ShapefileDigital Flood Hazard MappingN/AThe horizontal accuracy of this digital data is inconsistent. Accuracy of any particular flood hazard mapping element is dependent on the accuracy of the original hardcopy mapping and the methodology used to create a digital representation of the mapping. Contact the River Forecast Section for clarification if the precise flood hazard extent or a design flood level is critical to any application.Digital Flood Hazard MappingN/AThe vertical accuracy of this digital data is inconsistent. Accuracy of any particular flood hazard mapping element is dependent on the accuracy of the original hardcopy mapping and the methodology used to create a digital representation of the mapping. Contact the River Forecast Section for clarification if the precise flood hazard extent or a design flood level is critical to any application.River Forecast Section, Alberta Environment and Sustainable Resource Development, Government of AlbertaUnknownSupplementary InformationEdmonton, AlbertaRiver Forecast Section, Alberta Environment and Sustainable Resource Development, Government of AlbertaVariableVariableunknownpublication dateSupplementary DatasetsFlood hazard mapping is produced in association with flood hazard studies and is typically based on aerial photography, channel survey data, digital terrain models and design flood levels. Design flood levels are typically computed using hydraulic computer models which require channel and overbank geometry, hydraulic roughness estimates and design flow data as inputs and typically use historical highwater marks for calibration.The accuracy of any particular flood hazard mapping element is dependent on the accuracy of the original hardcopy mapping and the methodology used to create a digital representation of that mapping. Different digitization and geo-referencing strategies have been used with varying levels of success, depending on the nature and quality of the original hardcopy mapping. Limited historical documentation of this process is available, and unknown discrepancies may exist between the versions. New flood hazard mapping is typically created in a digital environment, and may not have similar issues.UnknownRiver Forecast Section, Alberta Environment and Sustainable Resource Development, Government of Albertamailing and physical address
11th floor, Oxbridge Place
9820 - 106 Street NW
EdmontonAlbertaT5K 2J6Canada78042762807804220262aenv-flood.risk-maps@gov.ab.0815 to 1630, Monday to FridayVectorSimpleFALSE0TRUEFALSED_North_American_1983_CSRSGeodetic Reference System 806378137.000000298.257222GCS_North_American_1983_CSRSDiamondValley_FHM_Flood_FringeFeature Class0OBJECTID_1OBJECTID_1OID400Internal feature number.EsriSequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.OBJECTIDOBJECTIDInteger400NAMENAMEString50Placeholder00Shape_LengShape_LengDouble800Shape_LengthShape_LengthDouble800Length of feature in internal units.EsriPositive real numbers that are automatically generated.Shape_AreaShape_AreaDouble800Area of feature in internal units squared.EsriPositive real numbers that are automatically generated.Alberta Environment and Sustainable Resource Development, Government of AlbertaInformatics Branch, Corporate Services Divisionmailing and physical address
14th floor, Oxbridge Place
9820 - 106 Street NW
EdmontonAlbertaT5K 2J6Canada78042773747804220712SRD.Data@gov.ab.ca08:15 to 16:30 Monday to FridayThis is the point of contact regarding distribution of the data set. Queries about distribution of the data set submitted through facsimile or electronic mail must include the salutation "Attention: Informatics Branch, Corporate Services Division; Dataset: Digital Flood Hazard Mapping".Offline DataThe user agrees that the information and each part thereof, any formatting or presentation thereof, any storage media on which it is provided, and any communication of any kind, incidental or in relation thereto, is provided to the user by the Minister and the Crown without warranty or representation as to any matter including but not limited to whether the information and storage media is correct, accurate or free from error, defect, danger, or hazard, and whether it is otherwise useful or suitable for any use the user may make of it. The Crown in right of Alberta, the Minister and her employees and agents, shall not be liable for any claims, costs, losses, or damages, including any special, indirect, incidental or consequential loss or damage, which the user may incur or experience as a result of the use or possession of the information or associated storage media.ESRI ShapefileFile compression technology shall be utilized when required. The Data Distribution Unit presently utilizes WinZip.0.14815.755FTP (File Transfer Protocol) is available, with the exception of data exceeding reasonable size limits or when corporate restrictions have been implemented in which the data will be delivered on DVD-R or portable hard drive device. The client may be required to provide an FTP TCP / IP address, user name, and password. Data may also be delivered via the Ministry external FTP site utilizing WinZip password encrypted files.DVD-R4.7GBPortable Hard DrivevariesWhere ApplicableAll requests for data / information are accepted via email, FAX, or Canada Post. All requests must include: Government of Alberta Ministry Name / Business Area Name, Physical Address, Contact Person Name(s), Phone and FAX Numbers, email Address, list of products requested, the geographic extent of the request (where product options are available - expressed by NTS block(s), township(s), etc), the delivery option required ( on-line / offline ), the data format when multiple formats are offered, and the intended use of the data.Requests for information are processed and completed in order of receipt with the exception of Alberta Environment and Sustainable Resource Development requests that have been authorized as priority status. All requests for information are completed within five (5) working days of receiving the request wherever possible.Limited custom order processing of Informatics Branch information may be available to Alberta Environment and Sustainable Resource Development personnel and contractors working on behalf of the Ministry.To utilize digital information, specialized graphics or GIS software (i.e. ArcInfo, ArcView, ArcGIS, or MicroStation) may be required.Monday to Friday20130809River Forecast Section, Alberta Environment and Sustainable Resource Development, Government of Albertamailing and physical address
11th floor, Oxbridge Place
9820 - 106 Street NW
EdmontonAlbertaT5K 2J6Canada78042762807804200262aenv-flood.risk-maps@gov.ab.ca0815 to 1630, Monday to FridayFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeen20221219154059002026011213402800FALSE20221219154059001.0DiamondValley_FHM_Flood_Fringe002ProjectedGCS_North_American_1983Linear Unit: Meter (1.000000)Alberta_NAD83_3_degree_Zone_centred_at_114_deg_West<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/2.9.0'><WKT>PROJCS["Alberta_NAD83_3_degree_Zone_centred_at_114_deg_West",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["Geodetic_Reference_System_of_1980",6378137.0,298.2572221008916]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["false_easting",0.0],PARAMETER["false_northing",0.0],PARAMETER["central_meridian",-114.0],PARAMETER["scale_factor",0.9999],PARAMETER["latitude_of_origin",0.0],UNIT["Meter",1.0]]</WKT><XOrigin>-5622600</XOrigin><YOrigin>-10001100</YOrigin><XYScale>10000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision></ProjectedCoordinateSystem>20221219002withheldLocal Area Network15.755ShapefileFile Geodatabase Feature ClassEsri ArcGIS 12.9.0.32739DiamondValley_FHM_Flood_Fringe-118.848536-110.62105458.4039749.1818891-118.848536-110.62105458.4039749.1818891ISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetGCS_North_American_1983_CSRS0