An orthophoto is an aerial photograph which has been geo-referenced and geometrically corrected so that the orthophoto has a uniform scale and can be situated accurately on a digital map. Available for immediate download with digital licensing. The orthophoto may be used for reference purposes, but may not be distributed or republished without permission.
These orthophotos are derived from aerial photographs taken Saturday, June 22, 2013 between the hours of 8 AM and 9:30 AM MDT along the Bow and Elbow Rivers. The visible flood water extents are from that time frame. These photos do not necessarily indicate the maximum high water line nor the crest line from the flooding on June 20 and June 21, 2013. There is no determination or inference regarding how water shown in the photo got there, e.g., water from overland flooding, sewer back-up, ground seepage, etc.
The colour orthophoto mosaic was created from approximately 400 images. The data was collected by Corporate Analytics & Innovation (IIS) during a State of Local Emergency in Calgary to produce orthophoto of the flood areas along the Bow and Elbow Rivers. The City captures new aerial photo on an annual basis.
Please note that these photographs do not represent the entire city of Calgary. They are limited to areas adjacent to the Bow and Elbow Rivers.
The City of Calgary Orthophotos are tiled in Alberta Township Survey (ATS) sections. The first two digits of the product’s filename represents the township number. These are followed by two digits representing the range and then a single digit representing the meridian. The final two digits following an "s" indicates the section number. (TTRRMsSS.sid)
If you do not already have a program that can open MrSID format files, see GeoViewer by LizardTech.
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