Stem Beach are two private lakes in Pueblo, CO. They have been private for many years, but gained some attention when the state record white bass was hauled out of there in '09 (which broke the record from same lakes). And rumors say the new record is in there, and there are many large fish of other species as well.
Anyway there is a fundraising tournament being held there on June 23, 2012 with cash prizes and a chance to fish this private water.
More info can be found here.