Beginning at the southwest corner of township one hundred fifty-nine north, range fifty-six west of the fifth principal meridian; thence east along the line between townships one hundred fifty-eight and one hundred fifty-nine north to the main channel of the Red River of the North; thence in a northerly direction along the main channel of the Red River of the North to the point where such channel intersects the international boundary line between North Dakota and Canada; thence west along the international boundary line to the line between ranges fifty-six and fifty-seven west; thence south along the line between ranges fifty-six and fifty-seven west to the southwest corner of township one hundred sixty-one north, range fifty-six west, a point on the fifteenth standard parallel; thence east along the fifteenth standard parallel to the northwest corner of township one hundred sixty north, range fifty-six west; thence continuing south along the line between ranges fifty-six and fifty-seven west to the point of beginning.