ORS § 201.120
The boundary of Grant County is as follows: Beginning at the southwest corner of township 18 south of range 26 east of the Willamette Meridian; thence running north on the line between ranges 25 and 26, to the northwest corner of township 7 south, range 26 east; thence east along the township line between townships 6 and 7 south to the summit of the chain of mountains known as the Blue Mountains; thence southerly along the summit of the Blue Mountains to the westerly boundary line of Baker County, as described in ORS 201.010 (1); thence along and adjoining the western line of Baker County on the summit of the Blue Mountains southerly between the waters of Powder River and Burnt River on the east and John Day River on the west, to a point where the line of such summit intersects the section line on the north side of section 15, township 15 south, range 35 east of the Willamette Meridian; thence east on the such section line to the quarter section corner on the north side of such section 15; thence south one and one-half miles to the center of section 22; thence east to the quarter section corner on the east side of section 24, the quarter section corner being on the range line between range 35 1/2 east and range 36 east of the Willamette Meridian; thence north on such range line 7.99 chains to the northwest corner of section 19, township 15 south, range 36 east of the Willamette Meridian; thence east on the section line to the intersection of the range line between range 36 east and range 37 east of the Willamette Meridian; thence south to the township line between townships 17 and 18 south; thence west along such township line to the range line between ranges 32 and 33 east of the Willamette Meridian; thence south on such range line to the township line between townships 18 and 19 south; thence west on such township line to the place of beginning.
ORS 201.120