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Portland : Flood management amendments to the Johnson Creek Basin plan district (1998)

14 pp. OCR and bookmarks supplied by UO. Maps. Adopted April 29, 1998. Captured August 21, 2009.
Portland : Fanno Creek and tributaries conservation plan

366 pp. OCR and bookmarks supplied by UO. Maps, tables, figures. Adopted January 19, 1994. Captured November 25, 2008.
Portland : Johnson Creek Basin protection plan

182 pp. OCR and bookmarks supplied by UO. Maps, tables, figures. Adopted July 17, 1991. Captured November 25, 2008.