The norias discharge water into aqueducts built on tall stone arches. To catch the water, each aqueduct has a very short section parallel to the water wheel and the river. This joins at 90 degrees the main section of the aqueduct, which leads away from the river and was sometimes many hundreds of metres long. Some aqueducts receive water from two norias of the same height, one on each side of the short section parallel to the water wheel. Much of the aqueducts’ length has now been demolished and today few aqueducts continue very far.
