Description

The AAFC Infrastructure Flood Mapping in Saskatchewan 20 centimeter colour orthophotos is a collection of georeferenced color digital orthophotos with 20 cm pixel size. The imagery was delivered in GeoTIF and ECW formats. The TIF and ECW mosaics were delivered in the same 1 km x 1 km tiles as the LiDAR data, and complete mosaics for each area in MrSID format were also provided. The digital photos were orthorectified using the ground model created from the DTM Key Points. With orthorectification, only features on the surface of the ground are correctly positioned in the orthophotos. Objects above the surface of the ground, such as building rooftops and trees, may contain horizontal displacement due to image parallax experienced when the photos were captured. This is sometimes apparent along the cut lines between photos. For positioning of above-ground structures it is recommended to use the LiDAR point clouds for accurate horizontal placement.

Resources

Name	Format	Description	Link
Pre-packaged GeoTIF files (No linguistic component)	Unknown		https://agriculture.canada.ca/atlas/data_donnees/skInfrastructureFloodMapping/data_donnees/tif/
2013-1820-1741-Sask Dams-Air-Photo	TXT		https://agriculture.canada.ca/atlas/data_donnees/skInfrastructureFloodMapping/supportdocument_documentdesupport/en/2013-1820-1741-Sask%20Dams-NAD83CSRS_UTM13_Photo.txt
AAFC - Multiple Sites - Saskatchewan LiDAR Survey Report	PDF		https://agriculture.canada.ca/atlas/data_donnees/skInfrastructureFloodMapping/supportdocument_documentdesupport/en/AAFC_Survey_Report.pdf
Data Product Specification (English)	PDF		https://agriculture.canada.ca/atlas/data_donnees/skInfrastructureFloodMapping/supportdocument_documentdesupport/en/ISO_19131_AAFC_Infrastructure_Flood_Mapping_in_Saskatchewan_Data_Product_Specification.pdf
AAFC - Multiple Sites - Saskatchewan Spring 2012 Collection LiDAR Survey Report	PDF		https://agriculture.canada.ca/atlas/data_donnees/skInfrastructureFloodMapping/supportdocument_documentdesupport/en/LiDAR_Spring2012.pdf
Data Product Specification (French)	PDF		https://agriculture.canada.ca/atlas/data_donnees/skInfrastructureFloodMapping/supportdocument_documentdesupport/fr/Cartographie_des_risques_dinondation_des_infrastructures_dAAC_en_Saskatchewan_ISO_19131.pdf

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