Beginning at the southwest corner of township one hundred fifty-nine north, range ninety-four 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 southeast corner of township one hundred fifty-nine north, range ninety west; thence north along the line between ranges eighty-nine and ninety west to the northeast corner of township one hundred sixty north, range ninety west, a point on the fifteenth standard parallel; thence east along the fifteenth standard parallel to the southeast corner of township one hundred sixty-one north, range eighty-nine west; thence north along the line between ranges eighty-eight and eighty-nine west to the northeast corner of township one hundred sixty-one north, range eighty-nine west; thence east along the line between townships one hundred sixty-one and one hundred sixty-two north to the southeast corner of township one hundred sixty-two north, range eighty-eight west; thence north along the line between ranges eighty-seven and eighty-eight west to the international boundary line between the United States and Canada; thence west along the international boundary line to the line between ranges ninety-four and ninety-five west; thence south along the line between ranges ninety-four and ninety-five west to the southwest corner of township one hundred sixty-one north, range ninety-four 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 ninety-four west; thence continuing south along the line between ranges ninety-four and ninety-five west to the point of beginning.