Brookville is not necessarily known for their bass - Mostly a crappie, walleye, and catfish fishery. That being said, there are 2 bridges on the lake and the causeways to the sides tend to hold smallies during the day as the sun heats up the rocks and gets the crayfish moving. The North side of the lake sees more bass action (i.e. Hanna's Creek and Ellys Creek) all the way up to the river mouth which has a lot of structure. If you are wanting to catch bass and have a boat with an electric motor, I would opt for Whitewater State Park (it spills into Brookville on the North side), it's a fun little lake and little to no bass pressure.