Oh that is interesting. I am inclined to side with the municipal source on this one. I was checking the elevation on this website and its giving me 715m, which is closer to cities estimate: https://en-ca.topographic-map.com/map-sgdf3/Edmonton/?center=53.44704%2C-113.56&zoom=18&popup=53.44731%2C-113.5597.
Additionally, should "Southwest Highland" be added as an alternative name?