If you are interested in Beaver Lake the Lost Bridge North campground is open, but I don't know if they have full hookups that early in the year. You could call the Beaver lake COE office to find out. If you have kayaks there is a cove on each side of the campground that hold smallmouth, and if there's rain with runoff, the back ends of those coves could hold white bass and even a walleye or two. If bank fishing you could drive down to the White river below Beaver dam for trout with a shot at whites and walleye, but it's mostly trout in the bank accessible areas.
That time of year, there's not a lot of other people out on that end of Beaver, there's not a lot of development on that end, and it's somewhat scenic, but the fishing can be tough.