20230803 10564700 1.0 FALSE MVC_FloodHazard_Clipped 002 255170.262600 856867.223800 5443837.127300 6480595.708000 1 Projected GCS_North_American_1983 Linear Unit: Meter (1.000000) NAD_1983_10TM_AEP_Forest <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/3.3.0'><WKT>PROJCS["NAD_1983_10TM_AEP_Forest",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-115.0],PARAMETER["Scale_Factor",0.9992],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3400]]</WKT><XOrigin>-5118700</XOrigin><YOrigin>-9994100</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><WKID>102184</WKID><LatestWKID>3400</LatestWKID></ProjectedCoordinateSystem> 20241003 14223300 20241003 14223300 150000000 5000 NAP ArcGIS Pro 3.0.3 Alberta Flood Hazard Identification Program Mapping 2020-10-21T00:00:00 2024-09-23T00:00:00 2024-09-09T00:00:00 Alberta Environment and Protected Areas, Government of Alberta River Engineering and Technical Services epa.flood@gov.ab.ca Edmonton Alberta 11th Floor, Oxbridge Place T5K 2J6 CA 9820 - 106 Street NW 7804051388 08:15 to 16:30 Monday to Friday The potential for flooding exists along all streams and lakes in Alberta. To assist communities in keeping Albertans safe and protecting their properties from floods, the Government of Alberta manages the production of flood studies under the provincial Flood Hazard Identification Program. Provincial flood maps are used by all levels of government, consultants, industry, non-government organizations and the public. Flood maps can inform local land use planning decisions, emergency management operations and sustainable floodplain function initiatives. Flood maps are not available in all communities and flood risks exist in areas without flood mapping. <DIV STYLE="text-align:Left;"><DIV><DIV>Flood studies include detailed engineering reports and flood maps. The engineering reports are typically technical in nature and document the data, assumptions, and results of the hydrologic and hydraulic analyses required to create flood maps. Flood maps are created by combining hydraulic model results for different sized floods with high-accuracy ground information. Flood maps identify where water will flow during a flood, and what land could be flooded during different sized floods. Most flood maps focus on floods caused by high river flows when water escapes the river channel, most often experienced in spring or following summer rainstorms, but they can also show areas at risk from ice jam floods or document the extent of historic floods.Flood inundation maps show areas at risk for different sized floods, including ice jam floods in some communities, and identify areas protected by flood berms. Because they map a wide range of floods, they are most often used for emergency response planning and to inform local infrastructure design. Flood hazard maps define floodway and flood fringe areas for the 1:100 design flood and are typically used by communities for planning or to help make local land use and development decisions. The floodway is the portion of the flood hazard area where flows are deepest, fastest and most destructive. The flood fringe is the portion of the flood hazard area outside of the floodway, where flood water is generally shallower and flows slower than in the floodway. High hazard flood fringe is the area within the flood fringe with deeper or faster moving water than the rest of the flood fringe. Protected flood fringe identifies areas that could be flooded if dedicated flood berms fail or do not work as designed during the 1:100 design flood. Flood hazard maps define floodway and flood fringe areas for the 1:100 design flood and are typically used by communities for planning or to help make local land use and development decisions. Flood hazard maps can also illustrate additional information for communities to consider, including incremental areas at risk for floods larger than the 1:100 design flood, such as the 1:200 and 1:500 floods.Visit <A href="http://www.floodhazard.alberta.ca" STYLE="text-decoration:underline;">www.floodhazard.alberta.ca</A> 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 <A href="http://www.floods.alberta.ca" STYLE="text-decoration:underline;">www.floods.alberta.ca</A>. 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. Users should check <A href="https://geodiscover.alberta.ca/" STYLE="text-decoration:underline;">https://geodiscover.alberta.ca/</A> to verify they have the most recent version of the Alberta Flood Mapping GIS dataset.</DIV></DIV></DIV> Flood studies Flood maps Floodways Flood Hazard Identification Program -120 -110 60 49 1 Flood studies Flood maps Floodways Flood Hazard Identification Program Alberta, Canada Alberta Environment and Protected Areas, Government of Alberta River Engineering and Technical Services epa.flood@gov.ab.ca Edmonton Alberta 11th floor, Oxbridge Place T5K 2J6 CA 9820 - 106 Street NW 7804051388 08:15 to 16:30 Monday to Friday Alberta Environment and Protected Areas, Government of Alberta To access the data you must agree to the terms of the Open Government Licence - Alberta found at https://open.alberta.ca/licence 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 Public/Unrestricted Government of Alberta Data and Information Security Classification https://imtpolicy.sp.alberta.ca/standards/Pages/Data-and-Information-Security-Classification.aspx 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. Studies span from 1983 to 2023. See Studies table in the spatial data package for specific dates for each study. 1983-01-01T00:00:00 2023-12-31T00:00:00 Enterprise Geodatabase Feature Class 3.0.3 Alberta Environment and Protected Areas, Government of Alberta Provincial Geospatial Centre 14th Floor, Oxbridge Place Edmonton Alberta T5K 2J6 PGC.Data@gov.ab.ca CA 9820 - 106 Street NW 7804277374 7804220712 Alberta Environment and Parks, Government of Alberta Alberta Environment and Parks, Government of Alberta MB 25 https://extranet.gov.ab.ca/srd/geodiscover/srd_pub/inlandWaters/ABFloodMapping.zip FTP Alberta Flood Mapping (FGDB) FGDB containing Alberta Flood Mapping dataset (ZIP) File Geodatabase 3.0.3 FGDB ZIP dataset EPSG 6.11(9.3.0.0) 0 Simple FALSE 0 TRUE FALSE MVC_FloodHazard_Clipped Feature Class 1 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). Alberta Environment and Protected Areas OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. Shape Shape Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. One_Zone One_Zone String 30 0 0 Two_Zone Two_Zone String 30 0 0 Multi_Zone Multi_Zone String 30 0 0 FloodMechanism Flood Mechanism String 50 0 0 Flood mechanism (e.g. open water, ice jam) Alberta Environment and Protected Areas RiverName River Name String 100 0 0 Official name of rivers and creeks within the study area Alberta Environment and Protected Areas Flow_Regime Flow Regime String 50 0 0 Flow regime (i.e. Natural, Naturalized or Regulated) Alberta Environment and Protected Areas Shape_Length Shape_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. StudyLink Study Link String 255 0 0 Shape_Area Shape_Area Double 8 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. Citation Citation Suggested citation format for study data Alberta Environment and Protected Areas String 250 0 0 DesignationDate Designation Date String 50 0 0 StudyName Study Name Name of the flood study Alberta Environment and Protected Areas String 100 0 0 DesignationStatus Designation Status Date that a study was designated or finalized String 50 0 0 0 20240923 2AE32B0D-C6F9-4E1B-81AB-6FDECC728E28 Alberta Environment and Protected Areas, Government of Alberta River Engineering and Technical Services epa.flood@gov.ab.ca Edmonton Alberta 11th Floor, Oxbridge Place T5K 2J6 CA 9820 - 106 Street NW 7804051388 08:15 to 16:30 Monday to Friday Alberta Environment and Protected Areas, Government of Alberta 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. 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. 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. 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. 2024-09-23T00:00:00 Alberta Environment and Protected Areas, Government of Alberta River Engineering and Technical Services epa.flood@gov.ab.ca Edmonton Alberta 11th floor, Oxbridge Place, 9820 - 106 Street NW T5K 2J6 7804051388 08:15 to 16:30 Monday to Friday Alberta Environment and Protected Areas, Government of Alberta