delivered the opinion of the Court.
This is a bill in equity brought in .¡this Court by the State of New York against the State of Illinois and the Sanitary District of Chicago to enjoin them from continuing a very substantial diversion of water from Lake Michigan. The character and purpose of the diversion are shown in
Sanitary District of Chicago
v.
United States,
The third paragraph of the bilL apparently proceeds on the theory that the diversion may interfere with or prevent the use of the waters of the Niagara and St. Lawrence Rivers by the plaintiff State and her citizens ■for the development of power. But it does not show that there is any present' use of the waters for such purposes which is being or will be disturbed; nor that th.ere is any definite project for so using them which is being or will be affected. The waters are international and. their use for developing power may ■ require the assent of the Dominion of Canada and the United States. No consent of either is shown. The suit is one ’for an injunction, a form of relief which must rést on an actual or presently
*490
threatened interference with the rights of another. Plainly no basis for ,such relief is disclosed in. what is said about water'power development. At best the paragraph does no more than present abstract questions respecting the right of the plaintiff State and her citizens tp use the waters for such purposes in the indefinite fUture. We are not at liberty to consider abstract questions.
New Jersey
v.
Sargent,
Motion to strike out Paragraph III of bill of complaint sustained without prejudice.
