of treaties in force between the United States of America and the United Mexican States.

"(i) The word 'disputes' in the second paragraph of article 2 shall have reference only to disputes between the Governments of the United States of America and the United Mexican States.

"(j) First, that the one million seven hundred thousand acre-feet specified in subparagraph (b) of article 10 includes and is not in addition to the one million five hundred thousand acre-feet, the delivery of which to Mexico is guaranteed in subparagraph (a) of article 10; second, that the one million five hundred thousand acre-feet specified in three places in said subparagraph (b) is identical with the one million five hundred thousand acre-feet specified in said subparagraph (a); third, that any use by Mexico under said subparagraph (b) of quantities of water arriving at the Mexican points of diversion in excess of said one million five hundred thousand acre-feet shall not give rise to any future claim of right by Mexico in excess of said guaranteed quantity of one million five hundred thousand acre-feet of water. "(k) The United States recognizes a duty to require that the protective structures to be constructed under article 12, paragraph (a), of this treaty, are so constructed, operated, and maintained as to adequately prevent damage to property and lands within the United States from the construction and operation of the diversion structure referred to in said paragraph."

And whereas the said treaty and protocol were duly ratified by the President of the United States of America on November 1, 1945, in pursuance of the aforesaid advice and consent of the Senate and subject to the aforesaid understandings on the part of the United States of America:

And whereas the said treaty and protocol were duly ratified by the President of the United Mexican States on October 16, 1945, in pursuance and according to the terms of a Decree of September 27, 1945 of the Senate of the United Mexican States approving the said treaty and protocol and approving the said understandings on the part of the United States of America in all that refers to the rights and obligations between the parties;

And whereas it is provided in Article 28 of the said treaty that the treaty shall enter into force on the day of the exchange of ratification; And whereas it is provided in the said protocol that the protocol shall be regarded as an integral part of the said treaty and shall be effective beginning with the day of the entry into force of the said treaty;

And whereas the respective instruments of ratification of the said treaty and protocol were duly exchanged, and a protocol of exchange of instruments of ratification was signed in the English and Spanish languages, by the respective Plenipotentiaries of the United States of America and the United Mexican States on November 8, 1945, the English text of which protocol of exchange of instruments of ratification reads in part as follows:

"The ratification by the Government of the United States of America of the treaty and protocol aforesaid recites in their entirety the understandings contained in the resolution of April 18, 1945 of the Senate of the United States of America advising and consenting to ratification the text of which resolution was communicated by the

Government of the United States of America to the Government of the United Mexican States. The ratification by the Government of the United Mexican States of the treaty and protocol aforesaid is effected, in the terms of its instrument of ratification, in conformity to the Decree of September 27, 1945 of the Senate of the United Mexican States approving the treaty and protocol aforesaid and approving also the aforesaid understandings on the part of the United States of America in all that refers to the rights and obligations between both parties, and in which the Mexican Senate refrains from considering, because it is not competent to pass judgment upon them, the provisions which relate exclusively to the internal application of the treaty within the United States of America and by its own authorities, and which are included in the understandings set forth under the letter (a) in the first part to the period preceding the words 'It is understood' and under the letters (b) and (c)."

Now, therefore, it it known that I, Harry S. Truman, President of the United States of America, do hereby proclaim and make public the said treaty and the said protocol supplementary thereto, to the end that the same and every article and clause thereof may be observed and fulfilled with good faith, on and from the eighth day of November, one thousand nine hundred forty-five, by the United States of America and by the citizens of the United States of America and all other persons subject to the jurisdiction thereof.

IN TESTIMONY WHEREOF, I have hereunto set my hand and caused the Seal of the United States of America to be affixed.

DONE at the city of Washington this twenty-seventh day of November in the year of our Lord one thousand nine hundred [SEAL] forty-five and of the Independence of the United States of America the one hundred seventieth.

HARRY S. TRUMAN.

By the President:

JAMES F. BYRNES,

Secretary of State.

Agreement Between Canada and the United States of America

on Great Lakes Water Quality

(March 17, 1972, Revised April 5, 1972)

The Government of the United States of America and the Government of Canada,

Determined to restore and enhance water quality in the Great Lakes System;

Seriously concerned about the grave deterioration of water quality on each side of the boundary to an extent that is causing injury to health and property on the other side, as described in the 1970 report of the International Joint Commission on Pollution of Lake Erie, Lake Ontario and the International Section of the St. Lawrence River:

Intent upon preventing further pollution of the Great Lakes System owing to continuing population growth, resource development and increasing use of water;

Reaffirming in a spirit of friendship and cooperation the rights and obligations of both countries under the Boundary Waters Treaty signed on January 11, 1909, and in particular their obligation not to pollute boundary waters:

Recognizing the rights of each country in the use of its Great Lakes waters;

Satisfied that the 1970 report of the International Joint Commission provides a sound basis for new and more effective cooperative actions to restore and enhance water quality in the Great Lakes System;

Convinced that the best means to achieve improved water quality in the Great Lakes System is through the adoption of common objectives, the development and implementation of cooperative programs and other measures, and the assignment of special responsibilities and functions to the International Joint Commission;

Have agreed as follows:

ARTICLE I-DEFINITIONS

As used in this Agreement:

(a) "Boundary waters of the Great Lakes System" or "boundary waters" means boundary waters, as defined in the Boundary Waters Treaty, that are within the Great Lakes System;

(b) "Boundary Waters Treaty" means the Treaty between the United States and Great Britain Relating to Boundary Waters, and Questions Arising Between the United States and Canada, signed at Washington on January 11, 1909;

(c) "Compatible regulations" means regulations no less restrictive than agreed principles;

(d) "Great Lakes System" means all of the streams, rivers, lakes and other bodies of water that are within the drainage basin of the St. Lawrence River at or upstream from the point at which this river becomes the international boundary between Canada and the United States;

(e) "Harmful quantity" means any quantity of a substance that if discharged into receiving waters would be inconsistent with the achievement of the water quality objectives;

(f) "Hazardous polluting substance" means any element or compound identified by the Parties which, when discharged in any quantity into or upon receiving waters or adjoining shorelines, presents an imminent and substantial danger to public health or welfare; for this purpose, "public health or welfare" encompasses all factors affecting the health and welfare of man including but not limited to human health, and the conservation and protection of fish, shellfish, wildlife, public and private property, shorelines and beaches;

(g) "International Joint Commission" or "Commission" means the International Joint Commission established by the Boundary Waters Treaty;

(h) "Phosphorus" means the element phosphorus present as a constituent of various organic and inorganic complexes and compounds;

(i) "Specific water quality objective" means the level of a substance or physical effect that the Parties agree, after investigation, to recognize as a maximum or minimum desired limit for a defined body of water or portion thereof, taking into account the beneficial uses of the water that the Parties desire to secure and protect;

(j) "State and Provincial Governments" means the Governments of the States of Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, and Wisconsin, and the Government of the Province of Ontario;

(k) "Tributary waters of the Great Lakes System" or "tributary waters" means all the waters of the Great Lakes System that are not boundary waters;

(1) "Water quality objectives" means the general water quality objectives adopted pursuant to Article II of this Agreement and the specific water quality objectives adopted pursuant to Article III of this Agreement.

ARTICLE II-GENERAL WATER QUALITY OBJECTIVES

The following general water quality objectives for the boundary waters of the Great Lakes System are adopted. These waters should be: (a) Free from substances that enter the waters as a result of human activity and that will settle to form putrescent or otherwise objectionable sludge deposits, or that will adversely affect aquatic life or waterfowl;

(b) Free from floating debris, oil, scum and other floating materials entering the waters as a result of human activity in amounts sufficient to be unsightly or deleterious;

(c) Free from materials entering the waters as a result of human activity producing color, odor or other conditions in such a degree as to create a nuisance;