Thanks for the plug Rob.
There's two Echo Lakes actually, Lower and Upper. Lower Echo Lake gets the trout and yes, the water quality usually sux. I've been trout fishing there a bunch of times but the trout hate me. I have caught millions of tiny-ass bullheads there though. Upper Echo Lake is just up the park road. It has no trout, but the bass fishing is decent. A lot of them are small, but there are bigger ones in there. I've rented the paddle boats and banged close to 20 bass off the far shoreline in a couple hours.