All data are provided in ESRI ArcMap (geodatabase, shapefile) or CAD (dwg, dgn) file format preferably in UTM NAD 83 projected coordinate system. If design drawings were provided in CAD, a pdf or jpeg was georeferenced and imported as CAD layers imported in ArcMap are often represented differently than when opened in their native software. Polygons were retrived from HEAT models, cross-sections and/or georeferenced detailed design pdfs, and as-built drawings. In the absence of any design drawings, projects were estimated through ortho photo interpretation. Chart Datum - High Waterline (75.3m) was used to create design drawings that contrubited to the HEAT Models. Original HEAT files were reviewed for completeness and accuracy. TWHARS categories were applied to project features. The column "source" indicate what data contributed to the polygons.

Disclaimer:

The data used to create this map was compiled from a variety sources and dates. Toronto and Region Conservation Authority (TRCA) takes no responsibility for errors or omissions in the data and retains the right to make changes and corrections at anytime without notice. For further information about the data on this map, please contact the TRCA Information GIS Department. 416.661.6600