This wildflower is all along the NW shoreline of Lake Frederick. I'm not a wildflower expert by any means, but I do think it's called Ironweed.
Nikon 1 V3 with FT-1 Adaptor,AF-S VR Nikkor 70-200mm f2.8G 1/500s f/2.8 at 540mm iso1400
UnCropped but with Size Reduced for Internet Viewing
full exif