- Name: NAD83 / Oregon South (ft)
- Scope: Large and medium scale topographic mapping and engineering survey.
- Remarks: State law defines system in International feet (note: not US survey feet). Federal definition is metric - see code 32127. For applications with an accuracy of better than 3 feet, replaced by NAD83(HARN) / SPCS.
- Area of validity: United States (USA) - Oregon south of approximately 44?15'N - counties of Coos; Crook; Curry; Deschutes; Douglas; Harney; Jackson; Josephine; Klamath; Lake; Lane; Malheur.