My parents also talk about riverview all the time , it seems besides the bobs it also had some type of mouse ride and also a couple other wood coasters, one was called blue streak or red streak something like that and I belive was a classic allen out and back, I've heard there was a tunnel of love ride, a whip, and a tumble bug. Sounds like a classic type of park to me.
The park had to be torn down because the neighborhood around the park , started to become more to urban, and at the same time the park owners failed to properly maintain the park.