This "sphere of influence" idea, as well as the "Hinterland Doctrine," can be of only temporary importance, owing to the limited area still open to occupation. It is maintained that within the "sphere" the influencing state has jurisdiction to the exclusion of another state, and that it has a right to occupy the territory later, if advisable. The influencing state disclaims all obligations possible.[133]
Wheaton states as a general principle of maritime and fluvial jurisdiction, "Things of which the use is inexhaustible, such as the sea and running water, cannot be so appropriated as to exclude others from using these elements in any manner which does not occasion a loss or inconvenience to the proprietor."[134] While the tendency of international policy is toward unrestricted freedom of river navigation, yet the principle as enunciated by Wheaton cannot be said to be established in practice. The American and Continental writers have generally favored the principle enunciated by Wheaton. English writers have contended against this position as a right, but admit that the principle is becoming established by numerous treaties and conventions. As to the sea, the principle may be said to be established.
The jurisdiction of rivers is a question which is not identical with the right of navigation of rivers, and may best be considered apart. The question of jurisdiction is one of general international principle, while the question of river navigation is one of particular provision, in many instances.
2. Rivers which traverse two or more states.
3. Rivers upon the opposite banks of which different states have jurisdiction.
(_a_) =Rivers which traverse only one state= are exclusively within the jurisdiction of that state. This jurisdiction may extend even to the forbidding of the use of a river to other states, and justifies the state in prescribing such regulations for its use as it may deem fit.
(_b_) =Rivers flowing through two or more states= are for those parts within the boundaries of each state under its jurisdiction for the purposes of police, tolls, and general regulations. The right of absolute exclusion of the co-riparian states by any one of the states through which a river flows has been the subject of much discussion, and authorities of great weight can be found upon either side.
