From there the importance and the urgency of a multicriteria Managing Plan of the Hdricos Resources of the Basin of the Paraba, as well as of the too much tools and structures of management, so that if it can face, of more rational form, scientific technique and all the hdricas questions of the Basin. How much to the Dam of Big hole, still the importance and the urgency are bigger of> its handling in bases consistent techniques, since on it they lack to the most basic information techniques. In addition, it cannot simply be substituted in its paper of supplying source of Great Campina, without this implies in high costs and unjustifiable wastefulness of the captation structures and aduo in full functioning. .