Only place is HHA, west of Edmonton that I know of. Someone else can give directions, have never been, to small an area for us since we like to ride long distances. We used to go south of Evansburg towards the Pembina River and actually camped there, but the trails have been seriously chewed up by locals and gas companies, so have not been in about 5 years.
Oh and welcome to the club. What are you riding? and what kind of riding do you like?