Replying to Cliff Jumping anywhere near Port Credit, Ontario, Canada? (near Toronto)

Random question...we're headed up to Port Credit, Ontario in two weeks and I was wondering if anyone knows of any good falls, lakes, etc. where we could go cliff jumping?

Here's a link to a Google map if it's of any help:

http://www.google.com/maps?f=q&hl=en&geocode=&q=Port+Credit,+Ontario,+Canada&ie=UTF8&ll=43.522166,-79.510803&spn=0.22903,0.466919&z=11&iwloc=addr&om=1


Thanks,

Nolan