Although the Legislative act was very controversial, it did have a positive impact upon the sanitation of New Orleans and its environs. Blood, manure, and offal no longer filled the streets or clogged the intake pipes of the Water Works, since all animal landing and slaughtering now took place down river.
This image is from an Atlas of the City of New Orleans, by Elisha Robinson, published in 1883.
Click the picture to enlarge.
Here is an image from a wood engraving of the buildings, from The Historic New Orleans Collection.