Final answer:
Obstacles to interbasin water transfer schemes commonly include cost and political conflicts.
Step-by-step explanation:
Obstacles to interbasin water transfer schemes commonly include cost and political conflicts.
For example, in the case of interbasin water transfer schemes, such as transferring water from one river basin to another, the cost of building the necessary infrastructure can be extremely high. Additionally, there can be political conflicts between different regions or countries over the allocation and control of the water resources.