I have just realised what was bugging me every time I passed the water wheel in Orsinium.the direction the wheel is turning can not be as the buckets need to be in the flow of the water in the direction of flow. the buckets on this wheel are black to front also the flow of water is from behind the wheel. if the water flow was changed the wheel would turn in the opposite direction. properly the designer has never seen a water wheel in action....