ORS § 201.190
The boundary of Lake County is as follows: Beginning at the intersection of the south boundary of the state and the east line of range 28 east of the Willamette Meridian; thence northerly along such range line to the northeast corner of township 33 south, range 28 east; thence westerly along township lines to the southwest corner of township 32 south, range 24 east; thence northerly along the west line of range 24 east to the northeast corner of township 23 south, range 23 east; thence westerly along township lines to the northwest corner of township 23 south, range 12 east; thence southerly along the west line of range 12 east to the southwest corner of township 32 south, range 12 east; thence easterly along township lines to the northeast corner of township 33 south, range 15 east; thence southerly along the east line of range 15 east to the south boundary of the state; thence easterly along the south boundary of the state to the point of beginning.
ORS 201.190