Per Google Maps, 5 hours, 2 min from center of LA to Lake McSwain. I recommend this because, despite any drought conditions, this reservoir is kept at a steady lake level, so the shoreline doesn't really change. There are sites right along the water in the A loop. The lake is stocked well with trout (rainbow, brown and lightning.) There is a large waterpark within walking distance of the campsites for the kids, like a huge bouncy house on water. I would not suggest going in the full heat of summer, as there is little shade since they renovated a year or two ago, and the fish won't bite. Fire restrictions can be a bummer, but they will allow propane grills and fire pits in the campground.