ORS § 201.180
The boundary of Klamath County is as follows: Beginning at the intersection of the south boundary of the state and the range line between ranges 15 and 16 east; thence northerly along such range line to the northeast corner of township 33 south, range 15 east; thence westerly along the township line between townships 32 and 33 south to the southwest corner of township 32 south, range 12 east; thence northerly along the range line to the northeast corner of township 23 south, range 11 east; thence westerly along township lines to the summit of the Cascade Range; thence southerly along the summit of the Cascade Range to latitude 43 degrees 4 minutes north, being the north boundary of Crater Lake National Park; thence due west to the projection north of the range line between ranges 4 and 5 east; thence south along such projection and range line to the south boundary of the state; thence easterly along such south boundary to the place of beginning.
ORS 201.180