ISERV captured images of the June 2013 flooding in Calgary that forced the evacuation of over 100,000 residents. The ISERV team sent the images to the Canadian government to help with response to this disaster and with assessing the damage. What you see here is a before and after comparison, with ISERV providing the after image.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 126.96.36.199.0