ABSTRACT
Sharing transboundary waters among sovereign countries aiming to create equitable cooperation is a political process that demands the construction of governance structures and institutions. However, one of the first steps to address the waters that cross international boundaries is the spatial framing of its content. Therefore, this chapter aims to reflect the spatial framing of international waters in international law and in the governance and cooperation debates. Considering the spatialities of transboundary waters influences many aspects of the international water policy, such as the delimitation of what is contained in institutional arrangements, which groups are enabled to participate in the governance process, and, finally, which is going to be the goals of transboundary water policies. In the end, it is considered how international water policy is developing institutional tools to consider the interdependence of surface and groundwater, but still lacking in introducing aerial water.
