I have heard that parts of Diamondhead took in a 20 foot surge. Probably the western portion near the Jourdan River. The Bay St Louis bridge is severly damaged, but the railroad bridge is intact. So I would imagine that a pretty good surge went into the Bay of St Louis.
Casino Magic, was basically knocked off it's barge at it's mooring. Most of the building south of the railroad along Hancock, Harrison and the Western Portion of Jackson County took the storm surge.
I'll try to find a link for that. Margie has great info above. The video is very clear...but they change headings and direction frequently.