Beginning at the point where the boundary line between the states of North Dakota and Montana intersects the line between townships one hundred thirty-five and one hundred thirty-six north; thence east along the line between townships one hundred thirty-five and one hundred thirty-six north to the southeast corner of township one hundred thirty-six north, range one hundred five west of the fifth principal meridian; thence north along the line between ranges one hundred four and one hundred five west to the northeast corner of township one hundred thirty-six north, range one hundred five west, a point on the ninth standard parallel; thence east along the ninth standard parallel to the southeast corner of township one hundred thirty-seven north, range one hundred three west; thence north along the line between ranges one hundred two and one hundred three west to the northeast corner of township one hundred forty north, range one hundred three west, a point on the tenth standard parallel; thence west along the tenth standard parallel to the southeast corner of township one hundred forty-one north, range one hundred three west; thence continuing north along the line between ranges one hundred two and one hundred three west to the northeast corner of township one hundred forty-four north, range one hundred three west, a point on the eleventh standard parallel; thence west along the eleventh standard parallel to the northwest corner of township one hundred forty-four north, range one hundred five west, a point on the boundary line between the states of Montana and North Dakota; thence south along the boundary line between the states of Montana and North Dakota to the point of beginning.