As you travel through Prescott you're sure to drive by a couple of its lakes. Passing through the Granite Dells on hwy 89 you'll see Watson Lake or driving down Willow Creek Rd. is Willow Lake (the smaller of the two). Both have an abundance of outdoor fun to be had.
Just a little out of town, down Senator Highway, is Goldwater Lake and on the other side of town is Granite Basin with Granite Mountain in the background.