Playdates and Meeting Other Moms

I am interested in meeting up at local(Waterloo/Elmira/St.Jacobs) parks or even people who have large backyards to get together and have playdates for the kids! I don't know many other moms and would like for my son to be social with other kids his age. Let me know if anyone is interested! I am 20 yrs old and my son is almost a year old!