Go to your local adult toy/book/fetish/clothing store and ask the clerk if they have any alternative lifestyle publications or flyers for local BDSM/fetish events. Chance are they do.

Find a local group that you think sounds good and go to a meet and greet session. Attend a few munches and get to know people. Go to a few events and get your face out there. You'll meet plenty of submissive girls that way for sure.