This dataset contains building footprints that were generated as part of the 2006 Orthophoto flight. The features were collected using digital photogrammetry methods by the consultant for the project; First Base Solutions.
This dataset was updated in April 2012 using the same 2006 specification The Swoop 2010 stereo imagery was used as a base for data collection. A contract was awarded to AeroQuest/Mapcon for these updates
Please note the following: --- In some cases there are building foundations that are visible in the imagery; however it is clear that these buildings were still under construction (no roofs) and were not collected as no roof (eave) elevation was available.
Buildings (not silos & water-towers) greater than 50 sq. metres were collected as this was the same spec. as in 2006. At that time (2006) the consultant also collected buildings that were smaller, e.g. sheds, small out-buildings.
The extent of the data corresponds to the Region of Niagara.