You have a river running down through Voshai, I'd have that drain into the gulf. The river coming in from the east of there I'd have it join that Voshai river deal... or vice versa. I'd move the lake a little further away from the coast unless there's going to be some marshland around it. Those 2 rivers are about the only thing I'd change really. The gap between the mountains is almost certain to be filled with hills so the rivers would have to climb over that. I guess you could put a Grand Canyon in there but the coast is so darn close it almost screams to be the river terminus.